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GCAS® Desktop Manual Guide revision 14 - i

1. If you are on unattended mode first stop data capture operation show the options panel via 5 Collapse button and then deactivate the unattended mode to see this button Alternatively simply open Action menu and select View Error Log Error log shows you the error messages why the record could not commit on every occasion of failed record In this example Unauthorised access exception means either the CSV file was marked as read only or your Windows user account do not have write permission on the folder where the CSV file resides Page 319 of 388 GCAS Desktop Manual Guide rev 14 GC Connect Error Log Error timestamp 06 February 2014 11 00 14 Response factor data Methane Nitrogen CO Ethane Propane i Butane n Butane 0 0 0 0 0 0 a 0 0 0 0 0 0 0 0 0 0 0 0 Retention time data Heptane Propane i Butane n Butane Neopentane i Pentane n Pentane 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 Exception type UnauthorizedAccessException Message Access to the path C Users ryang O00 Desktop A 2014 02 06 RF and RT cav is denied Save error log txt Clear error log 25 2 9 Data Capture Connection Log The connection log records several types of event during data capture operation For example when the connection Is started connection is stopped poll results whether the record successfully committed unattended mode only and error codes One device has one connection
2. Note 1 Username cannot contain spaces 2 Empty time zone information is replaced by the default Europe London time zone 27 1 2 Edit an Existing User To edit a user tick the user on the list and click the Edit button on the toolbar Make changes as required then click Save Otherwise click Reset to roll back to the previous user profile Page 331 of 388 GCAS Desktop Manual Guide rev 14 bY CE New Edit Delete Edit User e Login name Lser_B Reset password Reset password User type General User v User role Engineer 2 w User status p Active O Inactive Profile Full name Ernail Fhone Europe London Cancel About reset password You cannot alter the user s password directly but you can rather reset it to the default password password all lowercase Do this on an explicit request from the user himself to reset his password To set user as inactive edit the user and set his status as 4 Inactive Alternatively tick multiple users on the list then click amp Set as Inactive button on the toolbar Inactive users cannot log in to GCAS To set the user back as active aga
3. 13 30 14 00 14 30 15 00 15 30 16 00 16 30 17 00 17 30 18 00 13 3 5 Colourblind Assistance To aid users with colour blindness protanopia and deuteranopia GCAS Desktop provides an alternative colour scheme for the chart Use the Colourblind assist button to switch colour scheme 13 3 6 Uncertainty Trend Diagnostic Should you notice the uncertainty trend chart has some erroneous data points the calculation at that point might have included too few or too many calibration data To see exactly which records were included in the calculation of a data point run GCAS Desktop with additional UTdiagnostic parameter UT Uncertainty Trend Type the name of a program folder document or Internet resource and Windows will open it for you C GCAS GCASMain exe UTdiagnostic Cancel Browse With uncertainty trend diagnostic mode activated click on any dot on the chart GCAS Desktop displays the Uncertainty Trend Diagnostic form that lists the calibration records used to calculate the uncertainties of this dot Page 182 of 388 GCAS Desktop Manual Guide rev 14 Series name Ufc Data point index Ze Marked empty gt No X value 0A value gt 47951 7780555556 X Value date time November 2014 17 14 00 Y value 0 1038599089328 Calculation direction Forward Was error No Bumped into footprint Wot relevant Number of data 33 Data used in calculati
4. CV Trend bel Save Chart as Picture 62 80 ol Copy Chart Image 62 60 Zoom In Here 62 40 Generate Summary Here a Df Frame This Selection 62 20 Remove Frames 62 00 A E p Set Underlying Mole Composition Recods as Inactive 61 80 2 Zoom All Out 61 60 r 1200 1300 14 00 15 00 Vx Hide Crosshair Cursors W Clear Selection Area Show Values Show Legend Show Gridlines Show Previous Chart Use 8 Decimal Precision on Labels Page 240 of 388 GCAS Desktop Manual Guide rev 14 20 8 Selection Mode Menus Assuming the chart is on selection mode and you have a selection rectangle these menus are available Chat Comments 62 80 62 60 62 40 62 20 62 00 61 80 61 60 12 00 13 00 CV Trend bd Save Chart as Picture Oo Copy Chart Image Zoom In Here Generate Summary Here ft Frame This Selection Remove Frames Set Underlying Mole Composition Recods as Inactive Zoom All Out 14 00 15 00 va Hide Crosshair Cursors Clear Selection Area Show Values Show Legend Show Gridlines Show Previous Chart Use Decimal Precision on Labels Zoom In Here Generate Summary Here Frame This Selection Remove Frames Set Underlying Mole Composition Records as Inactive Zooms in to the selection rectangle Generates statistical summary for all data points inside the selection rectangle Ifyou activate previous chart alongside current ISO 6976
5. SO Export data from GCAS database The export was successful Click Finish to exit the wizard Exp Page 351 of 388 GCAS Desktop Manual Guide rev 14 This is an example Microsoft Excel worksheet after export process is finished H gt Sheet Excel 7 amp XxX HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW DEVELOPER OFFICE REMOTE TEAM Yusuf Adriansyah 7 Br 6 Cut Calibri qn Qes m V Bweaptert General 1a Fy E sem xq fay 2 Autosum Ay eb Paste a 4 ES 1 0 00 a id as a nsert Delete Format Sort amp Find amp W Format Painter BY Be QA SSS SE Mergel Center v fR ee Formatting Tabley Styles i amp Clear Filter Select Clipboard F Font F Alignment F Number F Styles Cells Editing A A8 Device Al v A B C D E F G H J K L M a 3 Export range 01 September 2013 to 31 January 2014 4 5 6 7 FPID Timestamp Flag Status RF Methane RF Nitrogen RF C02 RF Ethane RF Propane RF i Butane RFn Butane RFNeopentaneRFi Pentane RI hed Device A1 aii G 1 01Jan 2014 05 27 00 Footprint Active 11097900 13534000 15946600 17993700 23004100 26936800 28005500 29012500 30829900 10 Device B1 11 2 13 Jan 2014 11 11 27 Footprint Active 4283978 5148756 6032886 6790917 8432414 10186890 9946967 0 11456810 12 4 13 Jan 2014 11 23 49 Footprint Active 4283978 5148756 6032886 6790917 8432414 10186890 9946967 0 11456810 13 5 13 Jan 2014 11 24
6. a J CASE STUDY BE CaseStudy1 ba CaseStudy2 by CaseStudy3 byt CaseStudy4 BrE CaseStudys amp Network Problem WEJ DEMO WE 370XA DEMO bE 8425R LPS Test Connection to database server was disconnected Please check your network connection LP UK21C1813 Do not attempt to continue working on any existing open forms as they will raise errors by 370XA DEMO1 WE DEMOT Did you know GCAS can switch to work offline mode You need to set up a temporary database beforehand WE DEMo2 Later when you are online go to menu File gt Work Offline gt Initialise Temporary Database to create one WE D a O 2 D Disconnected lt gt Network problem arch device 5 e gt ih Disconnected lt gt Network problem because of network problem and you do not have work offline capability included in your licence or you do have one but you ve never set up a temporary database before Wait for network connectivity to recover and then go to the File menu gt Reconnect Database in order to reconnect If the reconnection attempt is successful GCAS Desktop displays a tooltip notification while all workspaces and devices are reloaded Please close and reopen all windows and dialogues that were opened before network disconnection View Comms Tools Administrator Window Help Reconnection successful GLAS is now connected to 101 255 900 246 Page 39 of 388 GCAS Desktop Manual Guide rev 14
7. 8 934 3453 19993 A 79 607 30656 8 934 830 70720 4 104 3139 414 102 2897 ape tegen Bae _OMSIFGUITS Composition 79 618 39134 7 79 595 30626 79 589 99313 7 7 79 616 85880 e 779 034 1 7223 779 645 21 701 7 79 670 59014 8 934 346 28691 934 938 6 7821 934 306 06952 6 934 770 19993 934 734 69271 3 934 762 59126 3 934 746 64923 2 934 774 4778 10 314 115 6496 0 314 075 1651 10 31 0 314 116 4595 10 314 105 1236 10 314 105 1236 Export to Excel l Copy to clipboard The leftmost column Graph provides a quick glance of how these converted records would look like in an RF chart It generates a mini RF chart similar to the screenshot below By default the chart omits zero values especially if the records don t have gases like C8 C9 or C10 You can override this behaviour by ticking Draw zeroes Draw zeroes 25 000 000 20 000 000 Single Point RF a uw B E co oo Neopenta ne i Pervta rie n Perrta re When you get a nice ascending chart for single point RF or nice flat chart for MLC RF most likely the three prerequisites coefficients certificate and constraints are correct However if you get a bad chart such as one or two dots skyrocket to hundreds of millions it may indicate one or more among the three prerequisites are wrong Page 280 of 388 GCA
8. Retention time chart for ABB devices and Daniel C9 C10 is also sorted by value and you can apply filter to show data from which detector 7 3 View Previous Footprints Calibration Data To browse previous record of footprint or calibration data click he Change footprint or bie Change calibration data button at the top region of the form Page 66 of 388 GCAS Desktop Manual Guide rev 14 Footprint Test4 E Change footprint ES Load latest footprint yim ae BETES STATUS TIMESTAMP Test4 Active 01 November 2013 07 24 iF ATi fal i aT el Gg LI LAG LO Pools Calibr ie Load latest calibration data VIC STATUS CALIBRATION DATA TIMESTAMP Test4 Active 23 November 2013 17 53 Select a different record then click OK button or double click the record on this list Date Time Status Footprint timestamp 19 October 2012 07 30 00 11 Novernber 2012 07 30 00 Active 10 Novernber 2012 07 30 00 Active 09 November 2012 07 30 00 08 Novernber 2012 07 November 2012 NB Klaveernber DAT Filter List all calibration data List calibration data between 26 Jul 2013 and Sort Newest to oldest 30 Jan 2014 Oldest to newest Sas You can always reload the latest record through E gt Load latest footprint or E gt Load latest calibration data button 7 4 Import New Footprint Calibration Data To import a new footprint or calibration data follow the steps below 1 Select the desired GC dev
9. A Ali VOY Mean and standard deviations for this slice are calculated from all these records and similarly for this slice Mean and standard deviations for this slice are calculated from all these records Special case if you are drawing RF or RT deviation trend and you have chosen a particular footprint as a comparison base this option will calculate the mean and twice the standard deviations from all records between the selected footprint and one next footprint thereafter New footprint New footprint New f wW TOoTorIN sh AI Wi HANA Ali os Mean and standard deviations are calculated from all records between the selected footprint and the next one c What being displayed The mean and twice standard deviations are simply calculated from all the data points which have been drawn on the chart for your choice of date range Unlike the other two options which require database reload through the Refresh button this option uses the data already there on the chart area In addition GCAS Desktop provides simple statistics when mean and standard deviation lines are on Click View summary link below the three radio buttons then the Data Analysis form generates a statistics summary for you Page 129 of 388 GCAS Desktop Manual Guide rev 14 5 Data Analysis DEMO o e Device name DEMO mm Plotfrom 02 Nov 2014 00 00 Mv to 05 Aug 2015 15 57 Select parameter Select chart t
10. 6 600 000 0 6 800 000 0 Chart is then drawn within the new confined range similar to the screenshot below Notice that the chart line is truncated because there are data points having values outside of this range Page 132 of 388 GCAS Desktop Manual Guide rev 14 Methane RF Trend Hdethane RF OF Nov 14 08 Nov 14 08 Mov 14 09 Nov 14 09 Mov 14 10 Mov 14 12 PM 12 AM 12 PR 12 AM 12 PM 12 AM To revert back to the automatic scale right click the chart and select Reset Y axis scale For X axis specify the desired date and time interval minimum X maximum 08 November 2014 13 12 i November 2014 00 00 lr Similarly to undo the scale you would right click on the chart and select Reset X axis scale Depending on the custom date interval the date mark on the X axis may include the time For more detailed interval such as from 00 00 to 08 00 of the same day the X axis would display the date and the time hh mmiss as well When you reset X axis scale but you notice the date time marks on X axis do not reset right click on the chart and choose Reset X axis Tick Mark Format 10 7 Save or Copy the Chart To save the chart as image file right click on the chart and select Save Chart as Picture Page 133 of 388 GCAS Desktop Manual Guide rev 14 FIOT Thom ae SEP UII UU 57 To ho WET 2UID I bo E7 Select parameter Select chart type l T Display mean an
11. E ExportMetadata 11 A2 28 01 2014 14 19 17 Footprint Active 4309686 5221769 6035713 7024046 8685369 9918244 1 028 a MolePercentage 2 B1 13 01 2014 11 11 27 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 018689E 07 d E RER 4 B1 13 01 2014 11 23 49 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 018689E 07 4 5 B1 13 01 2014 11 24 04 Calibration dai Active 4325396 5080538 6093185 6820819 8427312 1 025782E 07 1 025 6 B1 13 01 2014 11 26 12 Calibration dai Active 4213518 5137841 5908633 6852802 8413856 1 011531E 07 1 020 7B1 13 01 2014 11 32 11 Calibration dai Active 4177709 5185238 5996151 6813496 8369295 1 01524E 07 1 0401 3 B2 13 01 2014 11 20 57 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 018689E 07 4 Record M 4 1of10 pte Yo NoFilter Search KI i gt Datasheet View NUM LOCK Page 356 of 388 GCAS Desktop Manual Guide rev 14 Note If you opted to export uncertainty coefficients or MLC coefficients the coefficients are stored in two separate tables UncertaintyCoefficients and UncertaintyCoefficients_Details for uncertainty or MultilevelCoefficients and MultilevelCoefficients_Details for multilevel calibration The table UncertaintyCoefficients and MultilevelCoefficients store the principal metadata of the coefficient sets while UncertaintyCoefficients_Details and MultilevelCoefficients_Detail table contain the actual coefficients You only need to open Uncertaint
12. GCAS Desktop has two CSV templates one is for footprint and calibration data import while the other is for mole composition import For mole composition import the column assignments are Page 93 of 388 GCAS Desktop Manual Guide rev 14 Column Excelname Description A Device tag name Yes you can import data for multiple devices in one go Stream number Record timestamp in the format of dd mm yyyy hh mm 24 hour clock Methane mole composition Nitrogen MC Carbon dioxide MC Ethane MC Propane MC i Butane MC n Butane MC Neopentane MC If your device doesn t read neopentane fill in O zero i Pentane MC n Pentane MC Hexane MC Heptane MC If your device doesn t read heptane fill in O zero Octane MC If your device doesn t read octane fill in O zero Nonane MC If your device doesn t read nonane fill in O zero Decane MC If your device doesn t read decane fill in O zero Unnormalised total B C D E F G H J K L M N O p Q R S T Is it multilevel calibrated MC Fill O for single point or 1 for MLC If you don t have SO 10723 in your licence always fill 0 zero 8 4 Spot Sampling A spot sample is a special mole composition record Regular mole composition record is the composition of gases read by the GC device but spot sample is the composition of gases before they enter GC device Spot sampling is conducted directly on the pipeline on the sample probe before enteri
13. Mean 29 717625 Standard deviation 0 073221 Mean 2 std dev 29 864067 Mean 2 std dev 29 5711853 Maximum 29 921565 Minimum 29 357141 Wobbe index Mean 61 1853999 Standard deviation 072898 Mean 2 std dev 61 329795 Mean 2 std dev 61 0382804 Maximum 61 385771 Minimum 68 796071 Relative density Note if you opted to show previous chart as well this summary includes the difference between current chart and previous chart ISO 6976 Trend Summary Summary from 15 June 2615 69 41 to 15 June 2615 13 41 Calorific value Mean Standard Mean 2 Mean 2 Maximum Minimum Molar Mean Standard Mean 2 Mean 2 Maximum Minimum Wobbe Mean Standard Mean 2 Mean 2 Maximum deviation dev dev Mass SUM deviation dev dev index deviation std dev std dev Current 62 199255 6 151151 62 501557 61 896953 62 621678 61 422186 Current 29 717625 0 673221 29 864067 29 571183 29 921565 29 357141 Current 61 183999 0 672898 61 329795 61 838204 61 385771 MJ m Previous 62 2866010 6 146673 62 565955 61 991265 62 703242 61 517489 Previous 29 760971 8 671717 29 984464 29 617537 29 9560456 29 404681 Previous 61l 226463 6 072006 61 370476 61 082450 61 425091 amp 0 089355 MJ m B 002479 0 884398 0 894312 0 081564 MJ m 0 095224 MJ m MJ m MJ m MJ m
14. Sync data in the temporary database frorn the last gt months Stonng too much data in the temporary database will take more disk space and more time to finish a synchronisation process _ Automatically sync to central database server when go online Resume all modbus operations after a successful switchover Do a periodic check if GCAS can return online every 3 minutes And if GCAS can return online Notify me D Automatically switch back to central database _ Remember current state offline online for next time GCAS is launched In case of network disturbance GCAS Desktop displays an overlay notification telling you that GCAS has switched to offline mode Click anywhere on the overlay to dismiss the notification S Gas Chromatography Analysis Software demo Oo x File Profile Subscriptions View Comms Tools Window Help Action i 370XA DEMO1 i Vigilant New server Microsoft SQL v CASE STUDY WE CaseStudy1 WE CaseStudy2 WE CaseStudy3 WE CaseStudy4 WE CaseStudys ba ES CaseStudy6 v B Demo WEJ DEMO WEJ 370XA DEMO WE 8425R WEJ TEST WE uk21c1813 AFE 370XA DEMO1 WE DEMO1 Connection to database server was disconnected GCAS is switching to the temporary database bat 3 DEMO2 It is strongly advised to close and reopen any existing open forms Otherwise they may raise errors or load wrong data WE DEMO3 Bf RS Demos yf ES DEMOS By Pill C10 for development Rec
15. Uncertainties to include Uncertainty of calibration gas Uncertainty of GC repeatability Uncertainty of GC reproducibility As explained in chapter 11 uncertainty calculation takes up to three components Uncertainty of calibration gas Ucal gas uncertainty of GC repeatability linearity Urepeatability and uncertainty of GC reproducibility Ureproducibility These components may be included or excluded which turns their values to zero if excluded However in uncertainty trend Ureproducibility must be included You see an asterisk indicating that it has to be checked The other two can be unchecked or checked Note The GC device must have a calibration gas certificate Uncertainty Trend form cannot graph your chart if there are no certificates installed Page 167 of 388 GCAS Desktop Manual Guide rev 14 You cannot tick Uncertainty of GC repeatability if your GC device has no uncertainty coefficients stored in database Uncertainty coefficient selection field and mole percentage range options will be disabled To create a new coefficient set rewind to chapter 12 4 13 2 2 Calibration Certificate Set calibration certificate T Calculation resets everytime a new certificate is installed D Use this certificate for everything June2014 e This section controls which certificates to use There are two options Reset calculation at each certificate or pin a certificate for everything The def
16. 1 To analyse instantaneous GC data to see if it is working properly 2 To provide and analyse historical data in order to identify changes and predict failures 3 To support extended reproducibility tests so that the GC uncertainty may be determined GCAS comes in two versions GCAS Web and GCAS Desktop GCAS Web is available for customers using i Vigilant central database Both share the same database so that you can log in to either version and see the same data GCAS Web is being phased out therefore i Vigilant Technologies encourages all customers to move onto GCAS Desktop 1 2 System Requirements GCAS Desktop requires 1 Microsoft Windows Vista Windows 7 Windows 8 Windows 8 1 or Windows 10 Also please note that Windows XP is no longer supported We had one case GCAS Desktop did not run correctly on XP 2 Microsoft NET Framework 4 0 This is available from http www microsoft com en us download details aspx id 17718 Windows 8 1 and 10 have included NET Framework 4 even 4 5 therefore no need to install NET Framework unless the setup package tells you 3 Microsoft SQL Server Compact Edition CE version 4 0 This is available from http www microsoft com en us download details aspx id 17876 4 Microsoft Visual C 2010 Runtime redistributable x86 This is available from http www microsoftt com en us download details aspx id 5555 5 Internet connection preferred 6 1280 x 720 screen resolution 7 Ify
17. 2 7 Temporary Database Temporary database is a subset of whole GCAS database This kind of database is used by work offline feature on which GCAS operates if it is in offline mode Temporary databases use Microsoft SQL Server Compact Edition as the DBMS Unlike the complete database that stores all data for all GCAS users temporary database stores only data relevant to you This means temporary database contains data for groups you have been assigned to devices in these groups and data for these devices only Each user would have their own temporary databases You would find these databases in installation directory DB WorkOffline By default GCAS Desktop synchronises data from the database server to temporary database for one latest month That is today minus one month You can change this range from one month up to two years To set up your temporary database and change how much data to synchronise go to chapter 29 Working offline and 29 1 Set up temporary database 2 8 Flush and Backup Flush and backup is applicable for users with local offline databases that is Microsoft SQL Server Compact Edition or Microsoft Access Users of local corporate databases or i Vigilant central database may skip chapter 2 8 and 2 9 Flushing a file means writing any pending changes to the file that existed in computer memory into a permanent storage device in this case your hard disk drive If for some unfortunate reason GCAS crashed or
18. 2moosasan aon Brane aasa azeru ve azroesta oon Propane 10024000 Teoremo vs 1onosera _oomo3e6s Fane aston ozseise va 0256025 oo wane osso ossza S Nepensne OM OER S coms Deane 03083000 0308350 vs ososan o menne 0186300 o OnS03306 vz axsostat aowores HHeare 4066000 010661755 vs ooer oom teom amn omar onssa omone oof ols 22 7 Low Level ISO 10723 Implementation Provided the GCAS feature SO 70723 is included in your licence you already have ISO 10723 features in relevant modules such as Footprint Calibration Data Mole Composition Data Analysis Dashboard and pretty much everything that uses response factor values or mole composition values GCAS Desktop always checks the MLC flag bit of calibration or mole composition records and performs necessary actions before those modules use these records For example you cannot get a valid uncertainty of reproducibility from a collection of multilevel calibrated RF Therefore in order to calculate Ureproducibility GCAS Desktop needs to convert the RF records into single point first This is done on the spot and behind the screen You didn t notice the Dashboard always gives correct R value even though all calibration data are marked as MLC did you Visit the appropriate chapter on the module to get help about ISO 10723 features Footprint and calibration data are on chapter 7 Mole Composition is on chapte
19. GCAS Desktop Manual Guide rev 14 Add devices to comparison list Select stream to compare Start graphing ISO 10723 sample Show Devicetag Stream MLC Beles Test Beet Test Refresh Equal scaling Mole fraction Save Chart as Picture Copy Chart Image Clear MLC cache Zoom In Here Generate Summary Here Frame This Selection Remove Frames Set These Records as Inactive Methane comparison Send to ISO 6976 Calculator Selection Averaged AE anaes Send to 50 6976 Calculator Entire X axis Averaged Send to ISO 6976 Trend Comparison Zoom All Out Hide Crosshair Cursors Clear Selection Area Show Average Show Values Show Legend Show Gridlines 17 3 4 Save or Copy the Chart To save the chart as image file right click on the chart and select Save Chart as Picture Choose a gas and date range Gas to compare From 06 June 2015 1447 H 06 June 2015 1847 fr Add devices to comparison list Select stream to compare Start graphing ISO 10723sample Show Devicetag Stream MLC BrE Test oes Test Refresh Equal scaling Collapse all Zoom In Here Generate Summary Here Frame This Selection Remove Frames Set These Records as Inactive Send to ISO 6976 Calculator Selection Averaged Send to ISO 6976 Calculator Entire X axis Averaged Send to ISO 6976 Trend Comparison Zoom All Out Hide Crosshair
20. Open the Action menu and select Reorganise Devices This will show the Reorganise Devices dialogue Drag the device you would like to move to the new workspace Changes are committed automatically to the database This method is faster than editing multiple devices one by one only to change their assigned workspaces Click OK and the main window shall reload its device list Page 298 of 388 GCAS Desktop Manual Guide rev 14 i Reorganise Devices To move a device between workspaces drag it to the desired workspace Note Assigning device to a new workspace may change the group associated with that device w 5 Workspaces Ww di Platform A LF A A2 v d PlatformB N Drag here LF g1 LF p2 be c LF c2 Page 299 of 388 GCAS Desktop Manual Guide rev 14 25 Data Capture Instead of relying on CSV or text file import GCAS Desktop has the ability to connect to your physical GC device via Modbus protocol in order to get live data GCAS Desktop captures response factor retention time and mole composition data Note To use this feature you need the GCAS feature either Modbus over Serial or Modbus over TCP or both to be included in your GCAS licence Additionally to capture mole composition data you need another GCAS feature Live Data Analysis in your GCAS licence 25 1 Configure Register Mappings Before GCAS Desktop captures live data you need to configure the Modbus registers Register is small volat
21. Page 338 of 388 GCAS Desktop Manual Guide rev 14 Move a user to a new group Drag a user to the new group In this example we are moving User D to a new group User D loses access to One group but is given access to Another another group Group View To move an existing user into different group drag the user re seca E to the new group To assign that user to multiple groups a T a ss pom p Se hald the Ciri ker while daanin particular group drag the user iiai n Ey WUE dragging under that group from the left f ane and drop them here a gv One group p 4 admin User A UNASSIGNED USERS These are users who do not belong to any Dra g h ere group To re assign these users to a group a gp Anthr peip drag the user from this list to the desired 4 admin group on the left pane 4 User_Readonly 1 User B L Usert Assign a user to a new group while retaining the previous one If you want to assign User D to both groups instead hold the key on your keyboard while dragging her to the new group User D retains access to One group while is also being assigned to Another another group To move an existing user into different group drag the user eae to the new group To assign that user to multiple groups f AA ne ee m SE hold the Ctrl key while draggin sealer linia in area VEL REY WIL agging under that group from the lefi pone and drop them here a gv One group di 4 admin ri User A UNASSIGNED USERS D h T
22. Previous Finish Cancel If you chose to export mole composition data and there were spot samples within selected range these spot samples are represented by stream number negative one 1 in the Access database Here is an example of export result Microsoft Access database file AZ H e x TABLE TOOLS Export 2014 02 06 Database C Users ryang_000 Desktop Export 2014 02 06 accdb Access 2007 2013 file format Access 8 X HOME CREATE EXTERNAL DATA DATABASE TOOLS FIELDS TABLE Yusuf Adriansyah 7 DM E Cut Y S Ascending Y Selection le a New gt Totals Hi 33c Replace Calibri n i s aam EB Copy Al Descending hm Advanced 7 cH Save oi Spelling gt GoTo View Paste f Fo SDN Filter TERNA es Refresh Find BIU A gt aly 2 BS A n ormat Painter Se Remove Sot Y Toggle Filter All XX Delete Fa More R Select Views Clipboard p Sort amp Filter Records Find Text Formatting G A All Access Obje E MolePercentage Y 4 RF_RT x pe p DeviceTag FP_Timestamp Flag 7 Status RF_Methane RF_Nitroger RF_CO2 RF_Ethane RF_Propane RF_iButane Hay Tables Al 01 01 2014 05 27 00 Footprint Active 1 10979E 07 1 3534E 07 1 59466E 07 1 79937E 07 2 30041E 07 2 69368E 07 2 80 8 A2 28 01 2014 08 08 11 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 018689E 07 BE Comments 10 A2 28 01 2014 14 18 31 Calibration dat Active 4283978 5148756 6032886 6790917 8432414 1 018689E 07
23. _ Use the largest one After MLC constraints enter the mole composition part of the calibration gas certificate used by RF values followed by the RF values themselves Save your time by copying and pasting from Microsoft Excel or other spreadsheet software Click Paste if the copied data has 2 columns and 15 rows click Paste paste transpose certificate to paste calibration certificate only or click Paste paste transpose RF to paste RF values only If the mole composition records to convert do not have gases such as neopentane octane nonane or decane leave both their certificate composition and RF values to zero Don t forget to specify whether the RF values are single point or multilevel calibrated Under the grid next to These RF values are single point or MLC tick the correct radio button Page 283 of 388 GCAS Desktop Manual Guide rev 14 Erci Enter RF values and composition from the calibration gas certificate Typically the response factor comes from the last calibration preceding mole composition records C Align decimals Paste both Paste pastetranspose Paste pastetranspose Reset RE certificate MLC Single Point MC Offline Converter Mole percentage as in Component calibration certificate Response factor Methane 0 1519578 84 999 Nitrogen 02578516 Jda Carbon dioxide 0 2447972 1 995 Ethane 0 2549034 4283 Propane 0 2002616 1 803 i Butane 02082432 0 2496 RF amp Certficate n Butane Neopentane
24. all uncertainties of ISO 6976 outputs 11 3 Input Pages Input pages collect all required information before the form performs a calculation Visit subchapters below to get help about a specific page 11 3 1 Uncertainties to Include You can select which uncertainties to include in the calculation of standard relative uncertainty Usc Page 144 of 388 GCAS Desktop Manual Guide rev 14 Uce Ucal sas CUPIT E T OETA For example if you decide not to include uncertainty from the calibration gas Ucal gas iS replaced by zero and the formula changes to 2 2 Ucc Urepeatability T Ureproducibility You must select at least one uncertainty component in order to proceed to the next page If you don t Ucc will be zero and all subsequent calculations afterwards will be meaningless Also in this page there is a check box to control whether to include ISO 6976 standard measurement uncertainty of 0 05 at the end of calculation In the standard ISO 6976 uncertainty is 0 1 at k 2 Calculation of combined standard uncertainty uses k 1 hence the ISO 6976 measurement uncertainty becomes 0 05 Every result of ISO 6976 calculation shall carry this 0 05 uncertainty By default this check box is ticked 11 3 2 Uncertainty from the Calibration Gas Select a calibration certificate in GCAS database By default GCAS Desktop loads the last installed certificate This certificate is used later on when calculating Ucal gas Urepr
25. cecceesesesteseseeestsseseeeees 1 4 7 Manual Licence Update esesessesesssesssseseseseeeseseeeees 1 4 8 SACU AUN ON seik ER 1 5 MEON ENEEK caie E E A 2 Databasessa cuss ccdeoucveebeuesecdieuesdeaduees dotpeaes 2 1 Where Your Data is StOred ou eesessssssessesssesesssessesssessesseessees 2 2 supported DBM Siesta ee nS 2 3 change Databas Crore nen etre ene E IER 2 4 Change Database before LOGIN eesesessesessessesesteseseeseeseees 2 5 Change Database without Running GCAS ees 2 6 Reconnect on Network Problem cesesseesseseeeseeseenesees 2 Temporary Database ascaris bce leseheonecelseaten eastern hentia 2 8 BLUE girs 16 Mf cl lt 0 een enn ole nine a te eNO neon nve eee a 2 9 Automatic Flush and BackUp ccesesesseseseseseseseseeeseesesees 3 Users Groups and Workspaces 3 1 User Types and Roles Concept 0 0 esesesesssesessesssessesseessees Page 3 of 388 GCAS Desktop Manual Guide rev 14 De OE aoe RPL DIES He EDT Ora Oona HCE Ee Ee 21 GCAS Desktop Manual Guide rev 14 3 2 Gre Ups and Workspaces GONCE DE cscs eee uae 45 3 3 Edit Your Profile and Change Your Password ccssssssssssssssssssssssscsssscssssssessesessesssscsesscseesesessesesscsesseseeseess 46 3 3 1 EGIL YOUR PIO UG ctsas525 arta sensi areevesatecsauanncats ic cussereentene Asse sedseas Auta elese desecod nies eeeesaeeatee 46 3 3 2 Change Your SSW OC Seesen ennie I ERR 47 3 4 FOO VOU PAS WOTA a a RE E ea fvcetsollene ea
26. cm s m s W Next Pressure letdown stages gt Calculate Clear calculation results Left side of the form are the inputs while right side is the output The input section consists of three tabs Global parameters pressure letdown stages and GC time Global parameters have four inputs Base temperature base pressure base compressibility and sample flow Base temperature is set at 0 C and base pressure is typically set at the atmospheric pressure 1 atm or 1 01325 bar You need to provide the base compressibility factor Z and sample flow When it s done click Next Pressure letdown stages to move onto the next tab Pressure letdown stages are the collection of stage data A stage data consists of 7 inputs stage name line temperature line pressure line compressibility tube inner diameter tube length and bypass flow Page 290 of 388 GCAS Desktop Manual Guide rev 14 Ist H Add stage Stage name Sample stub Line temperature 0 0 C w Line pressure 23 0 bar Y gauge Line compressibility 1 0000 e g from AGA amp Tube inner diameter 0 0 mm w Tube length 0 0 mm Bypass flow 0 0 cm s m s Remove this stage Prev Global parameters Next GC time e Stage name Enter a name as an identifier to distinguish this stage from other stages This name will appear in the first column of the output list e Line temperature Temperature at this pipe e Line pressure Pressure at this pipe as con
27. may be abbreviated as MC 8 1 The Mole Composition Form Mole Composition form displays mole composition data presented in grid view By default numbers in this grid is the normalised composition The pie chart next to the grid helps visualising the data although in many cases methane composition overwhelms everything else This is caused by the use of balanced methane in calibration gas To open Mole Composition form select the device from device panel on the main user interface then go to the View menu gt Mole Composition Page 90 of 388 ty Change record DEVICE NAME Test4 Chart and Table Comments Stream 1 Mole Composition Test4 Es Load latest record STATUS Active Component Propane i Butane n Butane neoPentane i Pentane n Pentane BB Heptane BS Propane MS i Butane BM oenar ED Nitrogen DS i Pentane HB n Pentane HM ethane EE co Hexane GH n futane TE Hexane HM Ethane Remove mode Colourblind assist Show legend _ Show unnormalised _ High precision Show difference AN MLC conversion warning 3 Nitrogen Methane CO Ethane Total GCAS Desktop Manual Guide rev 14 TIMESTAMP 23 June 2014 12 55 07 Normalised percentage single pt 0 0343 0 1316 0 0623 0 0559 0 0524 0 0365 0 0663 0 0645 1 6703 90 0168 22053 22837 100 0000 Normalised percentage MLC N A NA N A N A NA N A Mole Composition form as seen by user
28. 000 1 Pentane 16 060 30 071 000 n Pentane 3 651 7 30 995 000 Hexane 35 07 34 573 000 amp Description First set The Uncertainty Coefficients form in edit mode During edit mode you can edit the numbers in both grids repeatability coefficient grid and response concentration coefficient grid Date of test field at the top and Description text box at the bottom of the form also become editable Note Edit mode is mainly intended for editing the description or correcting minor mistakes If there are too many coefficients to edit we suggest you to create a new set and set this record to inactive instead Uncertainty coefficients do not have comment feature Put short comments in the description text box if you like You can paste the coefficient numbers from Microsoft Excel or other spreadsheet editing software as long as there are 4 columns and equal number of rows Click Paste link above the grid to paste the numbers The Reset link resets all numbers in the grid back to zero Both Repeatability Coefficients tab and Response Concentration Coefficients tab have their own Paste and Reset command link When you finished editing the numbers and the description click Save button or go to Action menu gt Save Changes to commit the change The form exits its edit mode and becomes read only again Page 162 of 388 GCAS Desktop Manual Guide rev 14 nistrator Window Help ec a Ey Browse anothe E I DEVIC
29. 14 13 2 4 Uncertainty Coefficients and Mole Percentage Range Uncertainty of GC repeatability Use this coefficient set 21 October 2014 Ee Change Mole percentage range Universal Individual setra nge O Manual set range O Use 20 of mole comp records between 12 Nov 2014 00 00 and 12 Dec 2014 09 08 stream Largest component is balanced This section is available if uncertainty of GC reproducibility is checked on the first section Your GC device must have uncertainty coefficients stored in database otherwise you cannot tick uncertainty of GC reproducibility Select which coefficient set to use through Change button Date of test Description 21 October 2014 SEE Page 1 Z gt Dt Filter Options List all coefficient sets Entries per page C List coefficient sets between 08 Jun 2014 and Sort Newest to oldest 12 Dec 2014 O Oldest to newest hw st Next choose one of the mole percentage range options Page 171 of 388 GCAS Desktop Manual Guide rev 14 1 Universal Every component has the same plus minus range The default is 20 2 Individual Every component has its own plus minus range Click Set range to enter these individual ranges 3 Manual You need to explicitly set the value of lower bound and upper bound of each component For comparison the mole composition from the calibration gas certificate is displayed in the second column Component Asin certificat
30. 24 1 1 3 Delete Devices Tick the device s you would like to delete You can tick multiple devices together for bulk deletion Next click Delete button on the toolbar Important Deleting devices will erase e All footprints and calibration data of these devices e All mole composition data of these devices Page 297 of 388 GCAS Desktop Manual Guide rev 14 e All calibration gas certificates of these devices e Analysis parameter record for these devices e All uncertainty coefficients for these devices e All multilevel calibration coefficients for these devices e All multilevel calibration constraints for these devices All lag time data for these devices All comments made for these devices and e All repeatability test data of these devices for i Vigilant central database and GCAS Web users The deletion is permanent and cannot be undone Make sure you no longer use the existing data when you delete these devices Otherwise export their data as a backup 24 1 2 Reorganise Multiple Devices To move multiple GC devices between workspaces within the same group or to another workspace belong to other group open the Devices form and notice the Action menu on the menu bar Gas Chromatography Analysis Software yusufadr File Profile Subscriptions View Comms Tools Administrator Window Help cA F No device selected i Vigilant New server Microsoft Reorganise Devices
31. 25 2 Capture Data As the Modbus register configuration is ready GCAS Desktop is ready to get some data from the GC device 25 2 1 The GC Connect Form Select the device you would like to get data for then go to the Comms menu gt Connect to Device Connect to Device Register Mappings Advanced Preferences Start All Connections Stop All Connections Page 310 of 388 GCAS Desktop Manual Guide rev 14 Connection settings Device settings Data retrieval options _ Enable unattended mode rial cab Test2 Pollevery 15 seconds ll cad jiii Ez seconds ss J Stop operation automatically IP address I Protocol Modbus TCP ban ee After 20 records collected n D 1 a 302 ere Push to database After 3 hours Timeout ms O Bs Save to CSVs At 21 16 59 on 24 Apr 2014 Poll delay 1000 ms Change destination files Never stop a Mole composition unnormalised C Show delta to previous row Commit Status Stream Timestamp Propane n Butane i Pentane n Pental Calibration parameters Commit Status Flag as Timestamp Methane RF Nitrogen RF Carbon dioxide RF Ethane RF Propane RF Commit AX Clear grid GC Connect form has two main parts the options panel at the top and grid views at the bottom Options panel consists of four parts which are connection settings device settings data retrieval options and unattended mode If you
32. A 0 043346 g mol 0 001504 0 040338 0 046353 0 038891 g mol 0 047548 g mol 6 642464 6 666891 6 646661 8 644247 0 839319 A of prev 143 1 667 135 6 152 6 130 155 A of prev 4 146 2 897 135 6 157 130 6 162 A of prev 6 869 1 238 4 866 0 0725 B 0645 20 5 Save or Copy the Chart To save the chart as image file right click on the chart and select Save Chart as Picture Page 237 of 388 GCAS Desktop Manual Guide rev 14 Chart Comments CV Trend gd Save Chart as Picture Copy Chart Image 63 00 Zoom In Here 62 80 Generate Summary Here Ww Frame This Selection 62 60 J Remove Frames s Set Underlying Mole Composition Recods as Inactive 62 40 re Zoom All Out 62 20 as T Aide Crosshair Cursors 12 00 13 00 140g Clear Selection Area Show Values Show Legend Show Gridlines Show Previous Chart Use 8 Decimal Precision on Labels Similarly to copy the chart into clipboard right click and select Copy Chart Image Then you may paste the image onto Microsoft Paint Microsoft Word or any software that accepts bitmap image 20 6 Comparing Previous Chart ISO 6976 Trend form remembers the last ISO 6976 trend chart before you changed something By this way you can quickly compare current ISO 6976 trend versus the one before parameter change Typical use of previous chart is to compare calorific value CV based on si
33. Chart Imag 0 103880 oo eee Zoom All Qut Hide Crosshair Cursors 0 103860 Show Values Show Legend 0 103840 Show Gridlines Show Threshold Line 0 102820 Show Previous Chart 13 30 14 00 14 30 15 00 15 30 16 00 16 30 Use 8 Decimal Precision in Labels Similarly to copy the chart into clipboard right click and select Copy Chart Image Then you may paste the image onto Microsoft Paint Microsoft Word or any software that accepts bitmap image 13 3 4 Other Visual Cues Hover your mouse pointer over a data point on the chart to reveal a tooltip about that point Typically the tooltip displays the X axis value the date and time value Y axis value and the N number of calibration data used to calculate the uncertainty at this point For backward calculation the tooltip has additional info whether GCAS Desktop bumped into footprint and if so whether the backward iteration stopped at footprint or continued through U CV Trend DEMO1 0 10390 Previous UCV UCV 0 10388 0 10386 i a a eee Forward calculation minimum data 12 08 November 2014 18 13 UCV 0 10385236 0 04246131 MJ m 0 10384 Backward calculation N 41 last 20 records 0 10382 0 10380 2 Previous chart 08 November 2014 14 04 UfCV 0 10381403 0 04244564 Mm N amp 14 Burnped into footprint Yes calibration data retrieval stopped at the footprint f 0 10378 13 30 Page 180 of 388 GCAS Desktop M
34. Database connection Is closed This may indicate network problem or I O error If you don t have GCAS feature Work offline Capability in your GCAS licence this icon is displayed during network problem a spinning Database connection is in progress You can enter credential but GCAS Desktop Madane must wait until connection is opened successfully before validating your credential a No database connection currently present GCAS is in offline mode see chapter 29 10 thus no connection is initiated until you log in If you see the offline warning icon next to the Quit button similar to the screenshot below this indicates the login form is in offline mode Read more on chapter 29 10 Login Form in Offline Mode You need the GCAS feature Work offline Capability to be included in your GCAS licence to use offline mode Page 49 of 388 GCAS Desktop Manual Guide rev 14 We New server Microsoft SOL Help Change database o o _ Remember me on this database untick on a shared computer mm The check box Remember me on this database is intended to speed up login process in case you have only one user in the GCAS database thus you always use the same credential and it is a private computer meaning no one else uses that computer Ticking this box causes GCAS Desktop to automatically fill in your username and password the next time GCAS is launched therefore you can simply hit key to log in Never tick this box on a sh
35. Footprint and calibration data share the same record structure in database distinguished by a flag This flag can be changed from footprint to calibration data and vice versa To change this flag do the following 1 From an open Footprint or Calibration Data form go to Action menu gt Set Status If you do not see this menu your user account may not have the action permission for it Contact your GCAS administrator Action Import Data Import Data CSV La Import Data Manual Entry Send to Correlation Calculator EA Print Preview e Fri nt ISO 10723 2 This will show Set Status and Flag dialogue Record timestamp 12 December 2013 06 15 Set status Set flag Active OA Footprint Inactive Calibration data Cancel 3 Choose one of the options in Set flag group whether to set the record as a footprint or as a calibration data Click OK to commit the change 4 Notice that the record is reloaded using the other form That is for footprint it will be reloaded using Calibration Data form and for calibration data it will be reopened using Footprint form 5 The Comments tab opens automatically and it is advised to write a comment of why the record flag was changed Comments tab will not open in case your GCAS user account doesn t have Page 75 of 388 GCAS Desktop Manual Guide rev 14 action permission to post comments Refresh comment Date posted Comment Post anew
36. It sends the Selection Averaged averaged mole composition value of all gases of all records contained inside the selection area to ISO 6976 Calculator As the chart has only one gas the entire data table is reloaded from the Page 215 of 388 GCAS Desktop Manual Guide rev 14 database GCAS Desktop displays an additional dialogue if your a eee Send to ISO 6976 Calculator This menu requires SO 6976 Calculator in GCAS licence It sends the Entire X axis Averaged averaged mole composition value of all gases of all records in the entire X axis Actually it doesn t even need a selection area GCAS Desktop displays an additional dialogue if you have more than one comparison entry in the comparison list Send to ISO 6976 Trend This menu requires SO 6976 Trend in GCAS licence It loads the ISO Comparison 6976 Trend Comparison form and instructs the form to compare ISO 6976 values based on the mole composition records contained inside the selection area Contrast to Send to ISO 6976 Trend Comparison button this menu transmits the X axis range of selection area rather than the entire plot range These three menus Set These Records as Inactive Send to ISO 6976 Calculator and Send to ISO 6976 Trend Comparison may trigger a further confirmation if your selection area covers more than One device or one stream Please confirm which device s stream number s to have their records set as inactive or be sent to ISO 6976 Calculator or to
37. Jump to chatper 7 11 for more RF MW log charts plot the base 10 logarithm of response factor RF against molecular weight MW of certain sequence of gases They also calculate the regression line and computes the square of Pearson correlation coefficient R value If R value is less than threshold set in the Analysis Parameter default is 0 995 the number turns red and this may indicate problems within GC device Depending on your GC device type there may be three or two RF MW charts Supported C6 and C7 devices have three correlation charts GC devices with two ovens such as C9 and C10 only have two correlation charts Retention time chart graphs the retention time value or peak time in the unit of seconds s Page 61 of 388 GCAS Desktop Manual Guide rev 14 Show Single point RF hi Re sponse Factor 35 000 000 30 000 000 25 000 000 E i 20 000 000 n G 15 000 000 A 10 000 000 5 000 000 0 T o E es Z a a l l g f l Z Z j a 5 E MW RF Log Charts C1 C2 C6 C3 C4 C5 C1 C2 C3 C4 C5 C6 R 0 9978 R 0 9984 R 0 9975 7 60 7 50 7 60 7 48 l as 7 40 z a f 7 40 J 742 7 20 on 7 20 4 0 93 1 43 1 93 1 55 1 75 1 95 1 13 1 38 1 63 1 88 Retention Time Hexane G42 Fropane 11934 i Butane n Butane i Pentane n Pentane Nitrogen Methane co Ethane 0 100 200 300 400 500 Retention Time 5 Chart view To see the exact value of a data point on the charts hover your
38. Last poll New data received E sToP Next poll in 5 Mole composition unnormalised C Show delta to previous row Commit Status Stream oe ee n Butane neoPentane i Penta pending 1 owas nowswo zooan oaoa oases oneoro o2 Commit Status Flag as Timestamp Methane RF Nitrogen RF Carbon dioxide RF Ethane RF Propane RF if you notice unusual data the mappings or floating point standard might be wrong Configure register mappings Ii Commit A Clear grid You can open multiple GC Connect forms and run multiple data capture sessions simultaneously provided that no two GC Connect forms accessing the same device through the same COM port or same IP address GCAS Desktop suspends the idle timer if there is at least one active connection to GC device To stop capture hit the E Stop button If you accidentally closed the GC Connect form during an active data capture session either by pressing Ctr1 F4 or the close x button on its tile bar the form is still running in background The main interface displays a panel notification at the bottom region thus you can bring the GC Connect form back into view or stop its capture operation instead Nevertheless if you deliberately log out while a data capture is running tn background the form will be stopped closed and its pending records are discarded a Wy TEST4 LE Testa BFE PKMS gt Recently used devices eng Test_C9complete HPE Te
39. Overiding MLC COS UN iNi cenae a AE A 269 22 5 1 Overriding Constraints for Footprint Calibration Data ccessssessesessesesesessesesesssseseseseeseees 269 22 5 2 Overriding Constraints for Mole COMPOSITIONS eessesessesessesessesesseseesesessesessessssssessesessesseseseeseees 271 22 5 3 Revoking Cancelling an Override 0 eesessssssessesssessesssessesssessesssessessssesessseesessseessseseeseseseesessseaees 274 22 6 OMNE CONVENer TOO Sesma ai eae caa nena ne aa asi wa 274 22 6 1 MLC e Single Point RF Offline Converter oo esssesesesscsesscsessessssssesscsessesesscsessssessesessssesseseeseess 275 22 6 2 MLC e Single Point MC Offline Converter oc sesessssessssessesessesessesessesessesessesessssesscsesscsesseseeseees 281 22 7 Low Level ISO 10723 Implementation ccesscscsssssssssscessssssscacensssesseaesnsssesseacsnsssesseaeensssesseaeensesecss 288 23 Lag Ve coridor ieee 289 241 Wie Lag Time Calcat or FOT ek xecec tect steccte sit cctu ch eee ch eae tect eachectnec teste cuts OEE TEE EEDE ch lccenest 290 232 VINCE TUS EON anera A 293 24 Device Management scesccnsecevecescdecccedescsccasedseccedessuesssedsensevessiesssessensovessiesssecsensovessiesssecbensosessbesssciees 294 ZAM MG Dev eS RON oa a a eatete Rises eashaaedctt 294 ZA Create Edit Delete DEVICES sresrscscnionnosdrno ioiii ini ia a a AE 295 24 1 2 Reorganise Multiple Devices uc sesssssseessssssesssessesssessssssessesssessesssesssssseesessssssessseessseseessseseesesesseaeas 298 25 D
40. Sync process may take a prolonged time if you have ten thousands of unsynchronised records especially mole composition data Should the progress bar turns red and you see an error message click on the Error message button to see the error log Or if it turns yellow and you see conflicts click Resolve conflicts to resolve them Note Some cases of stale condition bug the progress bar halts and the computer does nothing have been reported Now we introduce stale prevention mechanism If for any reason you clicked Abort in the middle of sync operation GCAS Desktop tries to stop the sync sequence within 10 seconds If the operation couldn t abort after 10 seconds the form displays the Force abort button Use this button to terminate background threads immediately 29 3 Going Offline Going Online Manual switch between online and offline mode requires all open forms to be closed This is to make sure that GCAS Desktop is not doing any operation on GCAS database Switch into offline mode Go to the File menu gt Work Offline gt Go Offline to switch immediately Alternatively choose the second menu Sync then Go Offline The second menu will initiate a sync and afterwards switches GCAS Desktop to offline mode Change Database Reconnect Database Export Data Ctrl E Flush and Backup Work Offline i Go Offline Notification Log Sync then Go Offline Minimise to System Tray T Maintain Temporary Database Exit Delete Temporary
41. amp calibration data Mole compositions From 26 July 2015 ar Calibration certificates 10 August 2015 ES Uncertainty coefficients Multilevel calibration coefficients _ Lag time data _ Also include records marked as inactive Comments Page 359 of 388 GCAS Desktop Manual Guide rev 14 Set the destination database file eu Export data from GCAS database Set the destination file Change file C Usersiryang_00M Desktop Export 2014 02 06 sdf Review the export settings and click Next to begin the export process t6 Export data from GCAS database Review that all of these are correct and click Next to begin the export operation Export type Export to SOL Compact GC devices to export 5 devices show Data to export RF RT mole composition Date range 01 September 2013 to 31 January 2014 Include inactive records No Destination file C Users ryang_000 Desktop Export 2014 02 06 sdf Page 360 of 388 GCAS Desktop Manual Guide rev 14 GCAS Desktop commences the export operation S amp S eu Export data from GCAS database Export operation is In progress Counting records 65 records found Previous Fini Cancel In order to verify the export result try changing database to the SDF file Use local offline option choose Microsoft SQL Server Compact and point to the export file Page 361 of 388 GCAS Desktop Manual Guide rev 14 Note If the option Loc
42. gt GCAS Activator Copyright c i Uigilant Technologies Ltd 2614 Version 3 3 1 6 The GCAS licence and registration key on this computer has been revoked Press enter to continue GCAS gt _ Note Deactivation does not automatically increase your activation count Contact us once the deactivation process is completed so we can raise your activation count by one 1 thus you can activate GCAS Desktop on another PC Please attach a screenshot of your command prompt window tn your email Page 30 of 388 GCAS Desktop Manual Guide rev 14 Instant trial users do not deactivate your instant trial licence because instant trial licence is only offered once per computer unless you have a full licence or extended trial licence available or if you decided to uninstall GCAS Desktop 1 5 Integrity Check GCAS Desktop performs a check on the installation directory during start up in order to ensure that all required files are present and unmodified When GCAS Desktop detects a file is missing or has an unauthorised changes it presents a warning similar to this J There are problems regarding your GCAS installation These files are required by GCAS to run properly We advise you to reinstall GCAS Attempting to continue working on GCAS may result in unhandled exceptions errors or program crash File Problem File size 1s smaller than it should be File size is smaller than it should be A encan ce GCASActiva
43. or manual entry GCAS Desktop supports only CSV import for mole composition data if not captured live using data capture The CSV file must follow the standard template for mole composition The template file Page 92 of 388 GCAS Desktop Manual Guide rev 14 should be in your installation directory or in the browser HTML version of GCAS Desktop Manual Look for CSV import file template zip in your installation directory If you lose this template you can easily recreate new one by following the guide in the information box at the bottom of this chapter Below are the steps to import mole composition data _ Select the GC device whose data to be imported on your device panel 2 Open Mole Composition form through the View menu gt Mole Composition 3 Notice the Action menu on the menu bar 4 Open the Action menu and select Import Data CSV F Spot Sampling Import Data CSV Set Status Bulk Send to 1 0 6976 Calculator Add Comment Normalication Scale 50 10723 5 Load the CSV file and then click Import Select importer module Import Cancel If you do not see this menu your user account may not have the action permission for it or the CSV import feature is not included in your GCAS licence Contact your GCAS administrator GCAS Desktop treats all numbers in the CSV file as unnormalised composition and will normalise them before they are committed to GCAS database Lost your template
44. z cti EJA 2 z C m lt 0 00 ee in gt 00 49 E Cell Styles Format Filter Select Alignment E Number E Styles Cells Editing General D7 2 Trend comparison of calorific values 3 4 Timestamp Test6 stream 1 single pt Test6 stream 1 MLC Test7 stream 1 single pt 5 27 Jun 2015 10 01 00 62 4232 62 4512 6 27 Jun 2015 10 02 00 62 3100 FA 27 Jun 2015 10 03 00 62 3749 62 4063 8 27 Jun 2015 10 04 00 62 3169 9 27 Jun 2015 10 05 00 62 2819 62 3148 27 Jun 2015 10 07 00 62 3952 27 Jun 2015 10 08 00 62 3393 62 3698 27 Jun 2015 10 09 00 62 4276 27 Jun 2015 10 10 00 62 3282 62 3627 27 Jun 2015 10 12 00 62 1008 27 Jun 2015 10 13 00 62 1788 62 2205 27 Jun 2015 10 14 00 62 0344 27 Jun 2015 10 16 00 62 1676 62 2078 62 0750 27 Jun 2015 10 18 00 62 0144 62 0590 27 Jun 2015 10 19 00 62 0148 27 Jun 2015 10 20 00 61 9872 62 0333 27 Jun 2015 10 21 00 62 0727 Sheet 21 3 5 Selection Mode Menus These menus are available if ISO 6976 Trend Comparison form is in selection mode and there is a valid selection rectangle on the chart Similar to Mole Composition Comparison ISO 6976 Trend Comparison requires a contiguous selection area If there are several data points leaking out of your selection rectangle GCAS Desktop alerts you while proposing a new selection area bel Save Char as Picture Gg Copy Chart Image AN Generate Summary Here E Compare Aver
45. 0 gil Nitrogen Carbon dioxide 0 0 Ethane 0 0 Propane 0 0 i Butane 0 0 n Butane 0 0 Neopentane 0 0 i Pentane 0 0 n Pentane 0 0 ao oo 2 E A of of oF Bf of of Hexane 0 0 Sum 0 0 Cancel Afterwards enter the mole percentage and absolute uncertainty value of each gas in the certificate Be alert for potential human error while typing When you are confident with all entries click Save to save the certificate record into database Note Certificate number k number coverage factor and install date must be specified Other properties can have blank null data Typically the next calibration cycle after the certificate install date is a footprint If the certificate does not specify minimum storage usage pressure and temperature set them blank If the cylinder number is not available leave it blank too If there is no info about issue date and expiry date untick the corresponding check box inside the date picker Unlike Mole Composition module which recognises any scale calibration gas certificate must be expressed in percentage Page 114 of 388 GCAS Desktop Manual Guide rev 14 Like any other text box series in GCAS Desktop interface you can paste numbers from Microsoft Excel or other spreadsheet processing software Press Ctr1 V inside the first text box and the rest will follow Alternatively click cil Paste 9 4 Edita Certificate Sometimes human errors happen If you did a mistake whe
46. 0 9974 R 0 9947 U C 0 1858 U Cv 0 120696 U CV 0 4237 awl 29 Sep 2014 awl 30 Sep 2014 01 Oct 2014 30 Sep 2014 07 51 30 Sep 2014 07 56 x 01 Oct 2014 17 29 Customer Y 9 TPdev 01 w TPdev 02 R 0 9952 p SF Override date rules for this device U Cv 0 10449 23 Oct 2014 No mole composition Device TPdev 02 Override date rules for this device Make the dashboard tile red if tts date of last calibration ts older than days instead of 3 days Make the dashboard tile red if its date of last mole composition record ts older than 4 hours Tick Override date rules for this device This is the main device override switch for this device If you remove this tick you are effectively revoking its override causing the device to fall one level down per workspace override if defined or return to the general rules already set at the rules tab Inside the frame there are two check boxes One is for date of last calibration the other is for date of last mole composition These check boxes control the on off status of the overriding rules In the screenshot above the check box for date of last mole composition record is greyed out because date of last mole composition is not displayed on the dashboard tile Screenshot for illustrational purpose only Set the new threshold value for this device For example let s use 15 days as in the screenshot above Page 200 of 388 GCAS Desktop Manual G
47. 000663 6 2E 05 0 000419 0 015263 11 940785 1 1888E 08 1 88 79E 08 1 5813E 08 1 43545E 08 1 3984E 08 1 4504E 08 1 3895E 08 1 3726E 08 3 3499E 08 4 6229E 08 0 7 995E 19 9 3937E 18 B 4421E 17 0 0 0 1 0225E 16 g 0 Display format Auto C Number Scientific Previous Click Next Depending on conversion direction the third page may be skipped For MLC to single point conversion you are prompted to choose MLC constraints Single point to MLC conversion doesn t require constraints therefore this page is skipped Most of the time you don t have to worry about MLC constraints and you can click Next straight away However in case of the conversion results having weird values go back to this page and change the constraints to test whether the new constraints have corrected the conversion results Page 276 of 388 GCAS Desktop Manual Guide rev 14 Set constraints to filter out bad solutions MLC to single point only Linear functions y a bx Linear functions hawe one real root However if it is negative O Take absolute value to make it positive Reject the solution and set the result RF to zero Quadratic functions y a bx cx Quadratic functions may have two one or no real roots GCAS will always reject any imaginary root and negative real root However if both roots are positive Use the smallest one Use the largest one Cubic functions y a bx cx dx Cu
48. 04 Calibration data Active 4325396 5080538 6093185 6820819 8427312 10257820 10253980 0 11383360 14 6 13Jan 2014 11 26 12 Calibration data Active 4213518 5137841 5908633 6852802 8413856 10115310 10209410 0 11123260 15 7 13 Jan 2014 11 32 11 Calibration data Active 4177709 5185238 5996151 6813496 8369295 10152400 10401610 0 11329600 16 Device B2 17 3 13 Jan 2014 11 20 57 Footprint Active 4283978 5148756 6032886 6790917 8432414 10186890 9946967 0 11456810 18 Device A2 19 8 28Jan 2014 08 08 11 Footprint Active 4283978 5148756 6032886 6790917 8432414 10186890 9946967 0 11456810 20 10 28Jan 2014 14 18 31 Calibration data Active 4283978 5148756 6032886 6790917 8432414 10186890 9946967 0 11456810 21 11 28 Jan 2014 14 19 17 Footprint Active 4309686 5221769 6035713 7024046 8685369 9918244 10285470 0 11577820 29 23 24 25 Timestamp Stream Mole Methar Mole Nitroge Mole CO2 Mole Ethane Mole Propan Mole i Butan Mole n Butar Mole Neoper Mole i Penta M 26 Device B1 Sheet1 4 gt READY E t 100 28 3 Export to Microsoft Access This exporter module exports GCAS data to Microsoft Access database file accdb Unlike the SQL Compact export the export result is not a GCAS database thus you cannot use it as local offline database The export result is a simple Microsoft Access database intended for further analysis Note You need the GCAS feature Export to Microsoft Office to be included in your GCAS l
49. 14 don t have mole composition records at all are displayed as semi transparent and cannot be added to the comparison list Tor ta COP rom eor Hronn ee ee 1 if el FI d l LF ea J A i i k F kte ke L a A k l h em Show Device tag Stream Ay ee 370XA DEMO Be 24 BP pan Available data from 20 October 2014 18 09 to 10 November 2014 02 29 Wmr Available streams 1 4 Expand all Add gt Remove Remove all To compare devices add the devices from the device tree view to the comparison list Either select the device then click Add or double click the device or drag the device and drop it onto comparison list Note A Mole Composition Comparison form which was opened through Send to shortcut from Data Analysis Send to Mole Composition Comparison menu or Compare both link is locked to one particular device and one particular stream number Device tree view is empty and you cannot add another device into comparison list The text above the chart should clearly indicate the form is locked Click Reset and reload device list next to this text in order to unlock Mole Composition Comparison form back into normal mode Once the device has been added to the comparison list select the stream number to compare You can compare different streams of the same device too To do so add the device to the comparison list twice then select different stream number for each of them Moreover if you have SO 7072
50. 2013 09 24 16 55 00 43 aaa 0 315 80000000 62 100000000 20 200000000 90 000000000 ana prm error log bt xml esw Clear error log Close Page 374 of 388 GCAS Desktop Manual Guide rev 14 These kinds of error are usually related to database For example the message in first example Column name is not valid means the database structure is incomplete This indicates the file installation directory DB Template WorkOffline sdf is corrupt or outdated and you need to upgrade the GCAS database file In the second example Cannot add or update a child row a foreign key constrain fails means there are some records missing in another table inside the database but GCAS needs these records in order to write current record If you use i Vigilant central database and see Database Sync Error Log such as in the second example click Save error log button and send the file to our support team so that we can look for the cause of error If you use local corporate database your database administrator DBA might help you solve the problem GCAS Desktop tries to create a backup file of your temporary database before sync process begins You can find the backup in the same directory as your temporary database Some scenarios might prevent GCAS Desktop to create this backup though such as if your hard disk is full The file resides on installation directory DB WorkOffline your username sdf ba
51. 4 day trial H Activate offline Activate online Read the information presented in the oncoming window If you agree click Agree and start instant trial amp About instant trial By using instant trial GCAS Deskop will issue a GCAS licence that is valid for 4 days from today until 06 August 2015 end of day has all GCAS features has a maximum limit of 15 GC devices and uses a sample offline database Sample sdf Your first login to GCAS database will be admin and the password is password Instant trial is only available once per computer then you need to purchase a full GCAS licence in order to continue using OCAS Desktop You agree not to tamper or reverse engineer GCAS Desktop in any way to obtain additional chances of instant trial Instant trial licence is different from regular trial licence I Vigilant Technologies Limited also offers regular trial licences which last for typically between one to three months Should you be interested to try GOAS Desktop this way contact us to arrange a trial licence Later you need to activate GCAS Desktop through the usual offline activation or online activation method Contact us via phone at 44 122 4820030 or via ermailto su a Agree and start instant trial Instant trial information window A UAC prompt may appear If you are the computer administrator click Yes to continue Otherwise ask an administrator to enter the required password Page 26 of 388 GCAS
52. 6888 6 6600 6 6880 4 6888 6 8888 13336 668439 45659 51156 Hit SSPVIsasessesgggTS9S Hit Example of calibration data generated by ABB GC Page 69 of 388 Rel Den B 0583 6 6729 6 6808 6 6808 8 6808 6 6808 6 6808 GCAS Desktop Manual Guide rev 14 Text import will import one record at a time The device tag name in the text file must match the device name tag in GCAS database The device tag name is the Analyzer in Daniel GC report file or Station ID in ABB GC report file 7 4 2 CSV Import Should you wish to upload multiple records in one go or if your GC device was not manufactured by Daniel Industries nor ABB you would need to use CSV import The CSV spreadsheet must follow the template to be recognised by GCAS Desktop see warning box below The template defines column allocation within the spreadsheet Failure to comply with this template will result in wrong data being associated with wrong gas or component CSV file template should be inside your installation directory The default directory is C GCAS Look for CSV import file template zip in that folder If you lose this template you can easily recreate new one by following the guide in the information box at the bottom of this chapter When you are ready to import the CSV file open the Action menu and choose Import Data CSV Import Data Manual Entry Set Status Add Comment Send to Correlation Calculator Print Pre
53. As soon as there are three entries or more GCAS Desktop calculates the regression line and correlation value This chart updates automatically if there are entries removed or edited Page 222 of 388 GCAS Desktop Manual Guide rev 14 Correlation Calculator Add entry A RE MW Calculator Any X Y Calculator Take base 10 logarithm before calculating R A value Y value 11 25 3125 91 25 xX values 18 4 Any log X log Y Calculator Any X Y Calculator has another option calculate the correlation of log X base ten logarithm of X against log Y instead of just X against Y To use this option switch the Correlation Calculator to Any X Y Calculator mode then begin entering pairs of X and Y values as usual When you are done tick the check box Take base 10 logarithm before calculating R GCAS Desktop computes the logarithm of both X and Y value in each pair updates the chart and finally recalculates the regression line and the correlation R value Note This time do not enter zero or negative numbers in any X values or any Y values Logarithm of 0 yields negative infinity and is not graphable Logarithm of negative numbers are undefined If GCAS Desktop encounters zero it will change it to one 1 If GCAS Desktop finds a negative number GCAS Desktop replaces it with the absolute value of that number Unticking the check box will revert this calculator tool to the regular Any X Y Calculator mode Page 2
54. C4 C5 C6 Page 125 of 388 GCAS Desktop Manual Guide rev 14 ABB C6 complete or C6 without neopentane C3 C4 C5 C4 C5 C6 C3 C4 C5 C6 ABB C7 complete or C7 without neopentane C3 C4 C5 C6 C4 C5 C6 C7 C3 C4 C5 C6 C7 10 3 Date and Time Range Plot Range When you open the Data Analysis form it tries to load data from the last 30 days To change this date and time range set the desired range using the two date pickers inside the options box The time uses 24 hour format Click a Refresh button to reload the chart Plot from 01 Sep 2011 00 00 glx to 05 Nov 2011 00 00 oe ecords to plot ot Display mean and 2 std deviations eni hei 23 Drag a rectangle to Zoom _ Select E x 2 When the chart is refreshed chart data is cached in computer memory So if you select or unselect some components the requested data is loaded from memory instead of database as long as date and time range does not change Everytime you push the refresh button it also refreshes this cache Cache is cleared when the form is closed GCAS Desktop counts how many records are to be displayed and displays this count under the date picker input fields Would there be too many records to load GCAS Desktop alerts you that the load and draw process may take a prolonged time Also the dots of the line chart may clutter the chart area thus makes it difficult to interpret Alert limit is hardcoded to 150 records for RF
55. Calibration Gas Certificate Calibration gas certificate is a record of composition and uncertainty of a certified calibration gas package These certificates usually come as a papers hardcopies or labels attached to the gas tank or canister Calibration certificate module is required by Uncertainty Calculation module Note To use Calibration Gas Certificate module you need GCAS feature either Calibration Gas Certificate or Uncertainty Calculation or Uncertainty Trend to be included in your licence GCAS feature Calibration Gas Certificate is given to customers who d like to unlock Calibration Gas Certificate module but do not want the full Uncertainty Calculation module If you purchased Uncertainty Calculation feature or Uncertainty Trend you have access to Calibration Gas Certificate module automatically 9 1 The Calibration Gas Certificate Form Calibration Gas Certificate form displays the content of a calibration certificate and its properties To open Calibration Gas Certificate form select a device on your device panel and go to the View menu gt Calibration Certificate E Er Change certificate fe Load latest certificate DEVICE NAME STATUS INSTALL DATE CERTIFICATE NUMBER Test3 Active 01 June 2014 CERT 0001 Information Comments C Align decimals Com it Mole D Absolute Relative aidien percentage uncertainty uncertainty Methane 90 12604 oom 0 000117 nene oosoe ooo noos oseozos1 oo ras
56. Component a b c d i Methane SAE eee 4 0227900E 008 O 000000E 000 O 000000E 000 Nitrogen 1 320300E 002 3 349900E 008 O 000000E 000 O 000000E 000 Carbon dioxide 3 997000E 003 2 756600E 008 O0 000000E 000 0 000000E 000 Ethane B 600000E 004 2A4 4100E 008 8 984500E 020 1 4983500E 027 Propane T247700E 002 1 887900E 008 7 559500E 019 0 000000E 000 i Butane 6 350000E 003 1 581S500E 008 9 593700E 018 0 000000E 000 n Butane 2 01000E 003 1 434500E 008 6442100E 017 6 371 00E 025 Neopentane 1 300000E 005 1 598400E 008 O 000000E 000 0 000000E 000 1 Pentane 6 630000E 004 1 450400E 008 O 000000E 000 0 000000E 000 n Pentane 6 200000E 005 1 389500E 008 O 000000E 000 0 000000E 000 Display format C Auto Number Scientific _ Enforce decimal digits Previous Next Click Next Depending on conversion direction the third page may be skipped For MLC to single point conversion you are prompted to choose MLC constraints Single point to MLC conversion doesn t require constraints therefore this page is skipped The third constraint cubic constraint has two parts One for mole composition conversion and the other for RF conversion Mole composition conversion involves a set of RF values These RF values must be convertible therefore they require their own MLC constraints and a calibration certificate we ll see in the next step Most of the time you don t have to worry about MLC constraints and you can
57. Cursors Clear Selection Area Show Average Show Values Show Legend Show Gridlines Page 211 of 388 GCAS Desktop Manual Guide rev 14 Similarly to copy the chart into clipboard right click and select Copy Chart Image Then you may paste the image onto Microsoft Paint Microsoft Word or any software that accepts bitmap image 17 3 5 Export Values to Microsoft Excel Once the chart has been graphed completely click k Copy to Microsoft Excel This button opens a new Excel worksheet Then GCAS Desktop writes all data point of all line charts available onto this worksheet Note This feature requires Microsoft Excel 2010 2013 2016 or later to be installed GCAS Desktop prevents you from exporting to Excel if there are duplicate comparison entries H z Sheet1 Excel 7 MANH HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW TEAM Yusuf Adriansyah 3 E d Calibri ln laAagl D EEE Fa Conditional Formatting 3 Inset gt oY By LJ EB a nat L Format as Table Delete ae Biure 2 7 T gt 3 iy Cell Styles Ei Format oe sate Clipboard amp Font F Alignment F Number F Styles Cells Editing A D16 3 fx 48 9071 v A B C D E F G a 2 Timestamp Test6 stream 1 single pt Test6 stream 1 MLC Test7 stream 1 single pt 3 14 Jun 2015 14 46 00 48 7776 48 6298 48 9578 lt 14 Jun 2015 14 49 00 48 7505 48 6009 48 9586 5 14 Jun 2015 14 51 00 48 7549 4
58. Database Sync Now Work Offline Preferences On successful switchover the work offline indicator displays Offline and there will be a notification that you are now working offline Page 367 of 388 GCAS Desktop Manual Guide rev 14 Go offline Switchover complete You are now working offline Bat s ABB C7 Ll Daniel C6 Le Daniel C7 Bes Daniel C9 ore Daniel C10 Case studies in 20115 MP e Switch into online mode Similarly go to the File menu gt Work Offline gt Go Online File Reconnect Database re Export Data Ctrl E m gt Flush and Backup E Notification Log Maintain Temporary Database x Delete Temporary Database ee Sync Now o Work Offline Preferences Minimise to System Tray Exit On successful switchover the work offline indicator on the status bar displays Online and also there will be a notification that you are now working online If automatic sync on switchover is turned on GCAS Desktop initiates a database sync automatically File Profile Subscriptions View Comms Tools Administrator Window Help No device selected Go online amp see aa ee Switchover complete You are now working online 4 b TEST 2 Use the menu Work Offline gt Synchronise Now to upload changes to database server Piee Test A ia TEST 3 nW 1 Page 368 of 388 GCAS Desktop Manual Guide rev 14 29 4 Automatic Sync when
59. Desktop to check for licence update now To do so go to the Help menu gt Licence gt Check for update Help About GCAS About i Vigilant Technologies Check for Update Configure Aute update Hp Manual Update 1 4 7 2 If you are offline Should the computer had difficulties connecting to the internet e g on remote areas or off shore sites we will send you a new licence string and or QR code To install this new licence go to the Help menu gt Licence gt Manual Update Help About GCAS About i Vigilant Technologies Check for Update Configure Auto update UAC prompt may appear Afterwards either enter the new licence string or open the new QR code but re enter the same registration key as the previous one The software automatically does this for you Click Install and GCAS Activator will replace the installed licence string with the new one Page 29 of 388 GCAS Desktop Manual Guide rev 14 Your computer code 18AB 1747 771C Enter licence string D man ge or open QR code image file Browse Registration key 407343 Cancel 1 4 8 Deactivation To uninstall your licence and registration key start an elevated command prompt run as administrator and then execute this command GCASActivate revoke Microsoft Windows Version 6 3 9766 fc 2613 Microsoft Corporation All rights reserved CoNWindows system32 gt cd C 2NGCAS GCAS gt GCASActivate exe revoke GCAS
60. Device List The top section of the form has a linear flow Select the gas and comparison date range under section browse the devices to compare and add them to the comparison list select which stream of these devices and finally click Go to start graphing 17 2 1 Gas and Date Range Gas to compare From 06 August 2015 10 02 E7 To 07 August 2015 10 02 Hr GCAS Desktop supports 15 gases to compare across different devices This dropdown also includes neopentane and higher alkanes such as heptane octane nonane and decane Please note that not all devices have a complete range of gases for some do not have neopentane and some others do not have heptane and higher When you set the gas octane to compare then tick a device which doesn t include octane for example its line will lie on the X axis because its Y values are all zeroes 17 2 2 Devices and Comparison List Show Devicetag Stream MLC al 2 FORA DEMO Lebel 370XA DEMO Le 425R I gia Be es DEMO Expand all Add gt lt Remove Remove all On the left you see the device tree view It lists all your workspaces and devices within each workspace The grid on the right is known as comparison list Hover your mouse pointer over a device to view more information about data availability and stream numbers In the screenshot below the device 370XA DEMO has stream 1 and stream 4 Devices which Page 204 of 388 GCAS Desktop Manual Guide rev
61. First health status Lowest R of last calibration Uv 0 1124 Second health status Uncertainty of calorific value 29 Sep 2014 Third health status Date of last calibration 1 30Sep 2014 07 51 Fourth health status Date of last mole composition record Below are available GC health statuses to display To customise which ones to display visit Dashboard settings Chapter 16 1 1 provides detailed explanation on each item GCAS licence feature requirement Lowest correlation R of last calibration Uncertainty of calorific value Uncertainty Calculation Uncertainty of molecular weight composition Uncertainty Calculation Page 189 of 388 GCAS Desktop Manual Guide rev 14 Uncertainty of Wobbe index Uncertainty Calculation Uncertainty of relative density specific gravity Uncertainty Calculation 6 Uncertainty of standard density Uncertainty Calculation 8 Date of last mole composition record Live Data Analysis GCAS Desktop on its default setting displays only two health statuses lowest correlation R and date of last calibration Many users with Uncertainty Calculation feature in their licences add uncertainty of calorific value CV in addition to the default two Date of last calibration is useful to find out which GC device has not been calibrated for a long time Date of last mole composition record is useful to detect connection problems during unattended data capture The health status indicator may d
62. GCAS Desktop to keep retrying give a tick mark on If connection restart failed wait x minute s and set how much the delay GCAS Desktop should wait before another attempt of reconnection During this wait time you can abort the process by clicking E Stop button on GC Connect form and the restart attempt will be cancelled If this is not ticked the GC Connect form will stay stopped after first restart attempt failed Set how many retries GCAS Desktop should try The default is 30 attempts which means GCAS Desktop will give up after 30 times of unsuccessful reconnection Pick one from the drop down or type a number Choose infinite to make GCAS Desktop keeps retrying forever Note Automatic restart only works for the enlisted error codes during poll It will not work if you get the error code at the start of connection For example if you get 0x00000044 TCP IP connection error when you click gt Start button it means the IP address of your GC is wrong or the destination IP address does not listen to port 502 or the defined port Restarting GC connection for wrong IP address is useless therefore GCAS Desktop will not attempt to reconnect to your GC It s a different story if you get 0x00000044 at a regular poll it means there is network problem between your computer and your GC This error code can be solved by restarting TCP connection 25 3 4 Automatic Connection Termination Automatic connection termination is a feature to st
63. Hide Crosshair Cursors WAL Wt NY Clear Selection Area Set Y axis Scale Reset Y axis Scale Set X axis Scale 14 Jul 14 Jul 14 Jul 14 Jul 14 Jul l 01 00 02 00 03 00 l 05 00 06 00 Reset X axis Scale Reset X axis Tick Mark Format Toggle Light Dark Background Show Values Show Legend Show Gridlines Which Licence parameter requirement Zoom In Here Zooms in to the selection area Any Generate Summary Any Generates statistical summary for the Here selected area in contrast to View summary link which generates summary for the entire X axis my Frame This Selection Literally puts a rectangular frame around the selection for presentation purpose Page 136 of 388 Remove Frames Set These Records as Inactive Mark These Records as Single Point Mark These Records as MLC Send to ISO 6976 Calculator Averaged Send to ISO 6976 Trend Send to Correlation RF trend Calculator Selection not RF error Averaged trend Send to Correlation RF trend Calculator All Gases not RF error Averaged trend ISO 10723 ISO 10723 ISO 6976 Calculator ISO 6976 Trend GCAS Desktop Manual Guide rev 14 Methane MC Trend Stream 1 14 Jul 14 Jul 14 Jul 14 Jul 14 Jul 14 Jul 02 00 03 00 04 00 05 00 06 00 07 00 Sets all records within the X axis range of the selection area as inactive If you are on R trend chart this sets the underlying footprint calibration records as inac
64. ISO 6976 Calculator Although this feature is rarely used calibration certificates do have mole composition This means GCAS can calculate the calorific value and other properties of a calibration gas composition Users whose GCAS licence includes GCAS feature SO 6976 Calculator shall see an additional action menu Send to ISO 6976 Calculator Action New Certificate Edit Certificate Set Status or k Number Send to ISO 6976 Calculator Add Comment Similar to ISO 6976 Calculation menu on mole composition this menu sends the mole composition part of the calibration certificate to ISO 6976 Calculator tool Then it calculates the calorific value CV and other properties automatically Table nformation Comments _ Align decimals c t Mole Absolute Relative ree aac percentage uncertainty uncertainty Methane 68 1 0 1362 G S SS 0 xm Nitrogen 4 713 0 023565 ISO 6976 Calculator EE Carbon dioxide 3 206 0 01603 Input composition Pressure and temperature Ethane 9 627 0 019254 Mole Base pressure Propane 11 431 0 022862 i Butane 0 7216 0 00070235 n Butane 1 9103 0 0095515 0 14047 0 00060155 Gas name composition 1 01325 bar y Methane Combustion metering temperature Nitrogen 4 713 C 0 C T Carbon dioxide 3 206 Ethane 9 627 gt Calculate Propane 11 431 i Butane 0 7216 n Butane 1 9103 i Pentane ea 0 12031 0 00060155 Toa 0 02198 0 0002198 Heptane 0 00202 2 02E 05 Output Total 99 9936
65. ISO 6976 Trend Comparison tool Setting as inactive merges two comparison entries having same device same stream number but different single point MLC switch value MLC capabilities require SO 70723 in GCAS licence Action Set records as inactive Action Send to ISO 6976 calculator F Tests stream 1 I Test stream 1 single point est7 stream 1 I Test stream 1 MLC BTest7 stream 1 single point Cancel Cancel Confirmation dialogue boxes Tick which device s stream s then click Continue GCAS Desktop opens as many ISO 6976 Calculator forms as necessary and sets their descriptions accordingly so you know which is which 17 3 9 Other Visual Cues Click Show values or right click the chart and select Show Values to display the mole composition values Page 216 of 388 GCAS Desktop Manual Guide rev 14 Methane comparison Device Stream DEMO 2 3 0XA DEMO 4 O8 Nov O8Nov O8 Nov OG Nov O8 Nov O9 Mov ONov O9Nov O09 Nov 14 00 16 00 12 00 20 00 22900 00 00 02200 04 00 06 00 GCAS Desktop prompts a warning if one or more devices have over 100 dots on the chart We do not recommend to display value labels on line charts with over 100 dots because it will clutter the chart area Nevertheless you can choose to continue displaying labels despite the 100 dots just be informed that GCAS Desktop may appear not responding for a while because the layout engine of the chart is busy These devi
66. In most use usually only one gas is selected GCAS Desktop can display multiple gases on one chart as required Page 124 of 388 GCAS Desktop Manual Guide rev 14 10 2 3 1 Selected parameter RF or RT Methane _ Nitrogen Carbon dioxide _ Ethane Propane _ i Butane _ n Butane _ Neopentane _ i Pentane Components for C7 complete devices Depending on your GC device type you would see between 10 to 15 gases C6 without neopentane have ten gases while C10 complete devices have fifteen 10 2 3 2 Parameter selected MC mole composition You should see all gases as in RF or RT with one additional component at the bottommost of the list Unnormalised total GCAS Desktop always graphs normalised mole composition chart for gas component except for obviously the unnormalised total 10 2 3 3 Parameter selected R correlation C1 C2 C7 3 C4 C5 06 _ 1 C2 C3 C4 C5 C6 C7 For R parameter you should see two or three items Depending on your GC device type the wording of these components may vary These components graphs different R values calculated from their RF MW logarithm computation Device type Available components Daniel C6 complete or C6 without C1 C2 C6 neopentane C3 C4 C5 C1 C2 C3 C4 C5 C6 Daniel C7 complete or C7 without C1 C2 C7 neopentane C3 C4 C5 C6 C1 C2 C3 C4 C5 C6 C7 Daniel C9 complete or C9 without C3 C4 C5 Daniel C10 complete or C10 without C3
67. Li PA A rd A ALA LR La d Pd ot m Oa mt Te el wA e i ir ISO 6976 output to compare di ISO 10723 sample Show Device tag Stream MLC Calorific value Lees Test eae LFE Test Test 27 Jun 2015 Er Test Go From Clear MLC cache T Base pressure 1 0 atm vv Combustion metering temperature 7 Collapse all Remove Remove all CV comparison MJ m Device Stream 21 3 6 2 Compare Averages Menu Sometimes users need a more detailed information of how two comparison entries differ to each other To do this switch the chart to selection mode Afterwards either make a selection rectangle and right click then choose Compare Averages Selection or right click without a selection and select Compare Averages Entire X axis If your chart or selection rectangle contains more than two lines you are prompted to select two among them Page 257 of 388 GCAS Desktop Manual Guide rev 14 Save Chart as Picture ip w Copy Chart Image 62 6 Zoom In Here CV comparison MJ m Generate Summary ere iceman a Te 7 Testi i 62 2 A A Compare Averages Entire X axis ss es i ATA Ay Frame This Selection i i 62 0 a Aa e t Remove Frames I WT e y Set Underlying Mole Composition Records as Inactive 61 8 Zoom All Out 61 6 tg Hide Crosshair Cursors 10 00 11 00 Clear Selection Area Show Average Show Values Show Legend Show
68. Local Corporate Database e Local Offline Database always included e Work offline Capability Our website offers three packages of GCAS Desktop basic advanced and comprehensive Features included in each package are listed in this table Features sits GCAS Basic GCAS Advanced GCAS Comprehensive Modules Basic features Data Analysis Live Data Analysis Calibration Gas Certificate Uncertainty Calculation Uncertainty Trend ISO 6976 Calculator ISO 6976 Trend ISO 10723 Lag Time Calculator LIN INR IRIN INES S SAR NEN ISAI SHA TAJA JS S Communication Modbus over Serial Modbus over TCP Data import Text import CSV import Manual Data Entry Data export Export to CSV Export to Microsoft SQL Server CE Export to Microsoft Office Databases i Vigilant Central Database v v v Page 20 of 388 GCAS Desktop Manual Guide rev 14 Local Corporate Database v v Local Offline Database v v v Work Offline Capability v V Users buying GCAS basic package or GCAS advanced package have options to purchase add on features la carte which are appended to their licences Visit our website for pricing information of each feature Users buying GCAS comprehensive package have no more add ons available as they already get access to all GCAS features 1 4 1 Types of Licence There are two types of GCAS licence Lifetime and Subscription Lifetime licences or perpetual licences are GCAS licences
69. Manual Guide rev 14 U CV Trend DEMO1 0 10390 Previous U CV j ae U 0 10388 TA A 0 10386 0 10384 0 10382 0 10380 0 10378 1330 1400 1430 1500 15 30 16 00 1630 1700 1730 18 00 18 30 19 00 In the example screenshot above previous Ucy light blue is forward calculation with minimum 2 data to start calculation Current Ucv dark blue is backward calculation going backward 30 records and trim at footprint They co incide until the 30 dot then they start to diverge l l Be aware that Refresh button will erase previous chart prior to the recalculation 13 3 2 Zoom and Scroll Drag a rectangle over the area you want to zoom in Pan around the chart using the provided scroll bars Drag another rectangle to zoom in further 0 1085 0 1075 0 1070 A pe a om a Aacdasamiaraasaamaiatinmaiaai 0 1065 01 Sep 2014 01 Oct 2014 01 Nov 2014 01 Dec 2014 0 10711 l A 0 10706 0 107014 0 10696 i 0 10691 18 Aug 2014 20 Aug 2014 22 Aug 2014 24 Aug 2014 26 Aug 2014 Page 179 of 388 GCAS Desktop Manual Guide rev 14 To zoom out click the circled minus button on both scroll bars Press on your keyboard or right click the chart and select Zoom All Out to undo all zoom in operations 13 3 3 Save or Copy the Chart To save the chart as image file right click on the chart and select Save Chart as Picture U CV Trend DEMO1 0 703900 WICV Save Chart as Picture
70. May 2014 16 27 20 May 2014 15 55 07 May 2014 16 27 Footprint This record flag was changed from calibration data to footprint at yusufadr O7 May 2014 16 27 20 May 2014 15 55 07 May 2014 16 27 Calibration data This record flag was changed from calibration data to footprint at yusufadr OF May 2014 16 21 31 07 May 2014 16 21 Coba Footprint This record flag was changed from calibration data to footprint at yusufadr O7 May 2014 16 21 31 07 May 2014 16 21 Coba Leftmost column is the comment type which contains information of what the comment was written for Clicking any link inside this column will take you to the corresponding form and load that particular record The 2 Refresh button on the toolbar reloads comments for the selected date filter and type filter 15 2 Filter Comments by Type You can hide or show certain types of comments For example you can hide all comments for footprint records Use the seven toggle buttons on the Filter section of the toolbar m Aan sme sa o EN Filter by date of topic from 1 year ago Page 186 of 388 GCAS Desktop Manual Guide rev 14 Show or hide comments for footprint records Show or hide comments for calibration data 7 Show or hide comments for mole composition records uges Show or hide comments for calibration gas certificates Show or hide comments for da
71. New Temporary Dats esses seine eee nae ae ede 364 2 RE Ore aT Y Gt 40 6 eaten CRE RN CONC T ENON ee Teen Ot ere OC ene Sen Cone Un MCE as Sen eta Tne Taran Rene Meet 366 29 2 Symchnonise Temporary Daltab aS Coe cccecenepateenmecnsannnstngredusean meena aiaieedeneaeee 366 29 3 Going Omine Gong ONIME wemc acnac nee arian ncme anno a total aateellabial land 367 29 4 Automatic Sync when Returning ONIINE 2 essessesssessesssessesesesecsssssessssesesessesessssssseeeseseetssesseneseseenesees 369 29 5 Automatic Switchover on Network Problem ssssesssessssssessssssssssssssesssessesssssesssesesssessssssessesssessees 369 29 6 Alitomatic Restimiption OF Data Capture ssrserensn suno E 371 294 Automatic Detection or Online Conheci nesiszsisracsonin a aa a 372 22o SOV IVC TE ON LOO aaran aa EI EA EEA OEE OEE OEE ETETE 374 299 CONCER SS OUI ON esn eee tte ete eee i estes tees 375 29 10 Login Form OTP GIVOG Coss cesccsiccssenccescures asses sscstine ceeassicceedane dssaneeasnteeaectednb cinessiee nna caaruneewseeseecasocnes 377 2911 Oniine OTN Mode Persi ten coos acces a cea a 378 29 12 Maintenance of Tempora Databas Escri naa A et eiecseniee 379 ZIONS Deacuvate ONMINEWOKN Geesa e e EERTE EIEE ITE EEO OTE 380 30 Di gnostic and Maintenances siiccicsscesecassccecssscceseccsocdsoesseasssacsecdsooesecsaeassecd Oae oa aa aee oaaae Eai 382 Page 12 of 388 GCAS Desktop Manual Guide rev 14 BO DiaGMOSticMOGC xx sic isis ee Sir Sea ieee ede e
72. RF O MC RT trend ti Copy Chart Image RT O R RT deviation trend Zoom In Here Select component a aus nae Generate Summary Here D _ Nitrogen A Frame This Selection m Carbon dioxide This footprint only Remove Frames v Ethane Drag arectangleto Zoom _ Select C Thee Recond a ee _ Propane Le cea ear ae d a ap A sz T gt Mark These Records as Single Point Selectall Clear selections Change footprint Mark These Records as MLC Chart Comments Send to ISO 6976 Calculator Averaged Send to ISO 6976 Trenc RT Error Trend of 6 Gases Send to Correlation Calculator Selection Averaged Send to Correlation Calculator All Gases Averaged Send to Mole Composition Comparison Zoom All Out Hide Crosshair Cursors Clear Selection Area trv Set Y axis Scale thy Reset Y axis Scale aa Set X axis Scale 19Jan 26Jan O2Feb O9Feb 16Feb 23Feb 02Mar 09Mar 16Mar 23 Mar j 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 yy Reset X axis Scale Reset X axis Tick Mark Format W Toggle Light Dark Background Show Values Show Legend Show Gridlines 10 11 Insert Comment To view or write comment open the Comments tab Page 140 of 388 GCAS Desktop Manual Guide rev 14 Date posted Date of topic Comment Post a new comment Date of topic Write your comment and set the appropriate date of topic then click Submit Your comment will have a yel
73. Response factor Page 363 of 388 GCAS Desktop Manual Guide rev 14 29 Work Offline GCAS Desktop supports offline mode which might be useful in certain scenarios such as your network connection is disrupted or when you need to take the laptop away to a remote site where internet connection is a luxury To work offline you need to set up your own temporary database GCAS Desktop uses this temporary database while in offline mode Note To use this feature you need the GCAS feature Work offline Capability to be included in your GCAS licence Work offline is available if your main database server is i Vigilant central database or your local corporate database Offline working ts not available for local offline database because it is already offline Some features are not available in offline mode For instance you cannot change database edit your profile edit your password or use the Administrator menu while working offline 29 1 Set Up Temporary Database You can either create new temporary database or reuse an existing backup 29 1 1 Create New Temporary Database Close all open forms to make sure GCAS Desktop is not performing any operations to the GCAS database Then go to the File menu gt Work Offline gt Initialise Temporary Database Change Database Reconnect Database Export Data Ctrl E Flush and Backup Go Offline Notification Log Sync then Go Offline Minimise to System Tray Initialise Temp
74. Select importer iiiteueciel fe Wl module Importer Text Daniel 370XA Importer Text Daniel 70044 Import Cancel Page 68 of 388 GCAS Desktop Manual Guide rev 14 The required files look similar to the screenshots below File Edit Format Date Time 61 02 12 98 58 1 Stream 1 Stream Analyzer TEST4 Company Daniel Component Name n HEPTANE PROPANE i BUTANE n BUTANE NEOPENTANE i PENTANE n PENTANE CB s NITROGEN METHANE CARBON DIOXIDE ETHANE ACTIVE ALARMS Mone Ln 5 Col 29 View Help Final Calibration Cycle Time Start Time Analysis Time 350 MODE FOCAL Cycle Strm Seq 2 Industries Cal Conc 252 PPM 10 04508 6 5984 1 5948 489 PPM 8 1816 6 1608 481 PPM 5 6496 71 7970 6 9956 9 68016 Old RF New RF RF Old DEV 0 39 6 63 6 62 8 66 6 81 0 17 8 64 8 42 8 16 8 16 8 67 8 15 2 366335e 7 1 39096e 7 1 65627e 7 1 702496 7 1 774656 7 1 870676 7 1 93425e 7 1 93493e 7 2 053286 7 2 06192e 7 7 92676e 006 7 9364e 006 6 52073e 6 6 5270 006 9 29266e 6 9 29899e 6 1 039876 7 1 84843e 7 2 35721le 7 1 3914e 007 1 65654e 7 1 6353e 7 1 77484e 7 1 867586 7 29 1 SF 3 75 2 62 9 98 9 122 8 135 4 252 7 266 9 271 4 363 6 325 8 oe 8 2 2 8 8 Oe Oe 252 7 325 3 RT New RT 29 0 oe 75 2 2 9 99 6 122 9 135 4 266 9 271 4 303 3 8 E H F CE EEEE ESSRSSESHRS Example of calibration data generated by D
75. ThreadReadxXML Thread is terminating 11 Aug 15 18 DBconnect SOLconn_StateChange SOL Server connection has been opened successfully 11 Aug 15 16 Splash screen db _DatabaseOpened Microsoft SQL specific 11 Aug 15 1 Splash screen db Databasedpe Set date format operation returns 1 11 Aug 15 1 DBconnect Keep alive timer started 11 Aug 15 16 P Login form PeaGc 7892 535c3814d79b286ed344782 11 Aug 15 18 r22 Form z 11 Aug 15 18 9 Le 1 form 11 Aug 15 16 27 29 Login form 11 Aug 15 16 27 29 Login form verified Loading access control list 11 Aug 15 1 29 ACL Construct A n r is initialised for user type 3 and user role 5S 11 Aug 15 1 ACL LoadPermi o 17 menu permissions were loaded 49 action permissions were loade 11 Aug 15 18 Login form 4 4 E 11 Aug 15 1 Login form Logged in as demo user type ID 3 user role ID 5 timezone di 11 Aug 15 1 DBconnect UnsetMainForm Handle window is unset 11 Aug 15 1 Login form VisibleChanged ConnectCheckTimer is disabled 11 Aug 15 1 18 Main form Constructor Double buffering is enabled 11 Aug 15 1 ModbusCounter Constructor List of modbus forms has been initialised Current count 11 Aug 15 18 DBconnect SetMainForm Handle window set to 11668198 11 Aug 15 18 i Main form Form_Shown Licence type is subscription True 11 Aug 15 1 18 Main form Idle timer started 11 Aug 15 1 18 Main for
76. Trend Comparison form back into normal mode Once the device has been added to the comparison list select the stream number ISO 6976 Trend Comparison form reads the mole composition records for this stream number You can compare ISO 6976 trend values coming from different streams of the same device too To do so add the device to the comparison list twice then select different stream number for each of them Moreover if you have ISO 10723 feature in your GCAS licence this tool can also compare the ISO 6976 trend values based on single point composition vs multilevel calibrated composition of the same device same stream number Show Device tag Show Devicetag Stream MLC Test6 Test6 Test Test Test lt Remove Remove all lt Remove Remove all Example of comparison list for users without ISO 10723 left and with ISO 10723 right The column Show contains check boxes which is used to hide or show the line chart of corresponding comparison entry after the chart has been rendered completely Before you click Go these check boxes have no effect Users with GCAS feature SO 10723 in their GCAS licences see an additional column named MLC which also contains check boxes This is the single point MLC switch Tick the check box to graph ISO 6976 trend based on multilevel calibrated composition otherwise leave it unticked to graph ISO 6976 trend based on single point composition To remove an entry from the comparison list highl
77. a network location Be sure that external drives are plugged or network path is accessible when GCAS finished flushing For network locations GCAS Desktop supports UNC notation such as server shared directory or mapped network drives Currently there is no support for FTP SSH SFTP or WebDAV access Create monthly subfolders If this is ticked GCAS creates additional folders having the format of year month The database backup files goes to the directory year month Append backup at the end of destination file name Tick this to add backup to the file name For example if your local offline database is Contoso sdf the backup file will be Contoso backup sdf or Contoso backup 1 sdf Contoso backup 2014 12 11 sdf depending on what selected at the file name options Tick this option if you back up your database to the same directory as the local offline database file itself Notify me if backup failed This option causes GCAS Desktop to display a tooltip notification If backup operation failed Cause of failure can be an unplugged external drive insufficient free space on the hard disk your external drive has a write protect switch invalid or inaccessible network locations a firewall that prevented GCAS from reaching the network location or the target network server is down Use overlay notification If this option is checked GCAS Desktop prompts an overlay notification instead of a tooltip notification Overlay notification is that
78. a periodic check if GCAS can return online every 3 S minutes And if GCAS can return online Notify me O Automatically switch back to central database _ Remember current state offline online for next time GCAS is launched Page 365 of 388 GCAS Desktop Manual Guide rev 14 29 1 2 Restore a Backup Open the File menu gt Work Offline gt Use Existing Temporary Database A file dialogue should appear and you can point GCAS Desktop to your backup Change Database Reconnect Database Export Data Cirl E Flush and Backup Go Offline Notification Log Sync then Go Offline Minimise to System Tray p Initialise Temporary Database Exit Use Existing Temporary Database Maintain Temporary Database Sync Now Work Offline Preferences 29 2 Synchronise Temporary Database To initiate a manual sync between your temporary database and your main database server first you need to work online Look at the work offline indicator on the status bar of main user interface it should display Online If not follow chapter 29 3 to switch into online mode Go to the File menu gt Work Offline gt Sync Now a Synchronising Synchronising a Synchronisation Completed G Synchronisation is complete Page 366 of 388 GCAS Desktop Manual Guide rev 14 Any changes made on the temporary database are committed to the main database server then your temporary database is refreshed with new data from server
79. and 65 Next register available for subsequent stream is 66 If stream Registers you use 32 bit Modbus it will display 40 52 instead because each 1 40 61 component only uses one Modbus register 62 83 To edit a stream click on the desired stream then click Edit stream Likewise to delete one highlight the stream then the Delete stream button Add stream Tip To quickly define sequential Modbus registers enter the first register address then click Flash fill For example type 40 in heptane click Flash fill and GCAS Desktop shall assign 42 for propane 44 for i butane 46 for n butane and so on If you are on 32 bit Modbus then GCAS Desktop assigns 41 for propane 42 for i butane 43 for n butane and so on However if the register address for unnormalised total is not on sequential series as the other components Do not forget to edit the register address for the unnormalised total after clicking Flash fill We emphasise this because many Daniel GCs are configured like this You can also copy Modbus register addresses from Microsoft Excel or other spreadsheet processing software Press Ctr1 vV inside the first text box and the rest will follow skipping the greyed out fields Alternatively click cd Paste Page 305 of 388 GCAS Desktop Manual Guide rev 14 Ts Edit Stream H Stream number Mark as MLC Bs HOME INSERT Register addresses aes Calibri H Heptane bb go k E Paste g
80. are optional arguments used to run GCAS Desktop or GCAS Activator with the intention to enable or disable some advanced functionality Below are the list of additional start up parameters for GCAS Desktop GCASMain exe changedatabase online offline disablefilecheck disablekeepalive disableexcel enablediagnostic confirmimport Displays the Change Database dialogue only GCAS Desktop terminates immediately after you click the OK button This parameter cannot be combined with any other parameters Forces online mode Cannot be combined with offline switch Forces offline mode Cannot be combined with online switch Only users who have set up their temporary database can log in to GCAS Disables the integrity check during startup GCAS Desktop will not check the files inside the installation directory for any unauthorised changes Turns off the database ping timer Database ping timer sends a ping to your database server once every 30 seconds This is because some database servers disconnect the client if there were no activity for a certain interval By running GCAS Desktop with this parameter ping timer will not run and GCAS database server may terminate your connection for extended period of inactivity Disables the Microsoft Office interop module That is Export Data to Excel won t be available Copy to Excel button on the Comments form will be greyed out Export Values to Excel button on the Mole
81. be automatically normalised If you choose to push to database however GCAS Desktop always normalises all mole composition values before they are committed to database Page 313 of 388 GCAS Desktop Manual Guide rev 14 When you select Save to CSVs option GCAS Desktop shows a dialogue Here you set the CSV file names and their desired location To change these later click on the Change destination files link Save to CSV C Users ryang_000 THINKPAD Desktopi Test4 2014 06 06 MC csv 2014 06 06 RF RT csv 25 2 5 Start Capture As the Modbus register mappings connection settings device settings poll interval and data destination have been all configured apparently now you are ready to get some data Hit the Start button to start the operation GC Connect form will expand the grid view and poll the device for the first time after three seconds After first poll GC Connect form polls the device once every poll interval By default response factor and retention time are given equal priority in calibration data New incoming calibration data having same response factors as the previous row but with different retention time is still treated as new data If you prioritise response factors over retention time tick the check box Detect changes on RF only By this way incoming record having same RF but different RT from the previous one will not trigger a new row Page 314 of 388 GCAS Desktop Manual Guide rev 14
82. been logged out due to inactivity for 30 minutes Please log in again By default GCAS Desktop does not log you out automatically To turn on this feature and to configure the idle timeout threshold go to the Profile menu gt Idle timeout Idle Timeout Ea Log me out if have been idle for 30 minutes GCAS will not log you out if there are active connections to GC devices or if temp database sync amp in progress GCAS pauses the idle timer if you have data capture operation running in background or if database synchronisation between database server and temporary database Is in progress Page 48 of 388 GCAS Desktop Manual Guide rev 14 4 The User Interface This chapter is a quick guide about GCAS Desktop user interface 4 1 Login Form When you launch GCAS Desktop you see a splash screen for few seconds then you are presented with login form Enter your GCAS username and password then click Log in We New server Microsoft SQL Change database Password _ Remember me on this database untick on a shared computer LOG IN QUIT At the top the login form displays which database you are connected to In case you frequently switch between databases this information helps you to enter correct GCAS credential of current database You can change database straight from here simply click Change database link under the database name Icon on top left corner indicates database connectivity status
83. below Go to the Tools menu gt ISO 6976 Calculator on GCAS Desktop main window 2 While ISO 6976 Calculator window is open select the device from your device panel or recent device panel 3 Look under the input grid Click Use a mole composition record of lt device name gt The lt device name gt follows the actual device you are selecting and is updated whenever you change the selected device on main window 4 That link opens a Select Record dialogue Pick a record and click OK Select a Record Date Time Stream Status 28 March 2014 15 58 00 i Active 28 March 2014 15 57 45 Active 28 March 2014 15 57 45 i Active 28 March 2014 1 97 40 ya Active 28 March 2014 15 57 15 Active 28 March 2014 15 57 00 Active 28 March 2014 15 5645 Active m mi m m d ar FS Filter Options List all analysis data Entries per page 30 Y O List analysis data between 16 Mar 2014 00 00 Sort Newest to oldest 16 Apr 2014 16 23 Oldest to newest Stream All streams Show Any status Cancel 19 2 4 Load a Calibration Certificate Open a Calibration Gas Certificate form browse to the desired certificate the go to the Action menu and select Send to ISO 6976 Calculator The ISO 6976 Calculator form shall load the mole percentage portion of the calibration certificate Page 229 of 388 GCAS Desktop Manual Guide rev 14 19 3 Add Description Description is an optional text for presentation pu
84. black transparent overlay which covers entire working area therefore it will interrupt your work signifying backup is a high priority task Tooltip notification disappears after few seconds but overlay notification remains until you click it to dismiss Additionally upon dismissing the overlay notification GCAS Desktop will open Windows Explorer or File Explorer and point it to the location of your local offline database so you can do the backup manually There are four options that determine how the backup file shall be named 1 Keep original file name The backup file has the same name as the original database file with additional word backup if you opt to append backup at the end of filename GCAS overwrites the previous backup file because it has the same name 2 Append number GCAS Desktop appends a sequential number at the end of file name This option prevents overwriting 3 Append date GCAS Desktop appends today s date to the backup file with the format of yyyy mm dd This overwrites previous backup files on the same day hence only one backup file can exist per day Page 42 of 388 GCAS Desktop Manual Guide rev 14 4 Append timestamp GCAS Desktop appends today s date and current hour and minute with the format of yyyy mm dd hh nn This option prevents overwriting Page 43 of 388 GCAS Desktop Manual Guide rev 14 3 Users Groups and Workspaces GCAS users are users who are authorised to access data in
85. cannot install this licence automatically because Windows requires an administrator consent Click Install to continue Otherwise you see an error message similar to this one Server replied Error Wrong registration key or maximum activation count has been exceeded Click Install licence If UAC is enabled on your computer and it is usually enabled by default a UAC prompt may appear If you are the computer administrator click Yes to continue Otherwise ask your computer administrator to type in the admin password 10 The following window confirms that your licence and registration key have been installed on your 11 12 computer Licence installed a Install licence Click Close and now GCAS Desktop is activated ready to use In rare cases where UAC is disabled possibly by your system administrator the licence would be installed automatically without UAC prompt This implies you wouldn t see the screen as depicted in step 8 and 10 1 4 4 Offline Activation For computers without internet connection e g on off shore location or remote site you can activate GCAS Desktop offline You need your licence string or QR code image file together with your registration key stored offline such as in your corporate email or in a USB flash drive Page 23 of 388 GCAS Desktop Manual Guide rev 14 1 The first time GCAS Desktop is run it requests for activation The following window pops up Activation req
86. chart area through the cy Expand button at the top of Data Analysis form F To make the line chart black use the toggle colour black button on the options box This button is available if only one component is ticked Black line appears better on monochrome printers if the saved file or copied image is about to be printed If you do not want the gridlines or chart legend to be included in the image file right click on the chart and uncheck Show Gridlines or Show Legend or both 10 8 Colourblind Assistance To aid users with colour blindness protanopia and deuteranopia GCAS Desktop provides an alternative colour scheme for the chart Use the 8 Colourblind assist button on the options box Page 134 of 388 GCAS Desktop Manual Guide rev 14 RF Trend of All Gases 06 Apr 13 Apr 20 Apr 27 Apr 04 May 11 May 18 May 2014 2014 2014 2014 2014 2014 2014 ee Methane RF CO RF Propane RF n Butane RF Pentane RF Hexane RF NitrogenRF Ethane RF j Butane RF Neopentane RF n Pentane RF Heptane RF Normal colour scheme colourblind assistance turned off RF Trend of All Gases 50 000 000 e i ee eee gee eg A0 000 00g gpm A S S r i 7 Kae E E a e e dS a 30 000 000 aa a aaa a a a ee eg ee a a 20 000 000 A e a EL L Li i eili aine ie e e e e a a a a a l l l a i i E a l r erma E ee TEATE a EE E E E E m e EEEE TTT enag mmg 06 Apr 13 Apr 20 Apr 27 Apr 04 May 11 May 1
87. click Next straight away However in case of the conversion results having weird values go back to this page and change the constraints to test whether the new constraints have corrected the conversion results Page 282 of 388 GCAS Desktop Manual Guide rev 14 MLC Single Point MC Offline Converter Set constraints to filter out bad solutions MLC to single point only Linear functions y a bx Linear functions have one real root However if it is negative O Take Jabsolute value to make it positive Reject the solution and set the result RF to zero Quadratic functions y a bx cx Quadratic functions may have two one or no real roots GCAS will always reject any Imaginary root and negative real root However if both roots are positive Use the smallest one _ Use the largest one Cubic functions y a bx cx dx Cubic functions may have one two or three real roots GCAS will always reject any imaginary root and negative real root However if there are multiple positive roots For response factor scroll down for more Use the smallest one _ Use the largest one 500 000 Use the one that yields result RF inside this range _ Use the one that yields result RF inside or closest to this range 15 000 000 Use the smallest one Use the middle one if there are three or smallest if there are two Use the middle one if there are three or largest if there are two
88. database server can access it using both GCAS Web and GCAS Desktop Using this server requires internet connection 2 Corporate database server Also known as local corporate database your data is stored in a database server within your company local area network LAN Customer can access data on this database server using GCAS Desktop only 3 Local offline database Data is stored in a file on your computer This database is permanently offline isolated from outside world Customer can access data on this database server using GCAS Desktop only Each choice is a distinct GCAS feature in your GCAS licence Customer with GCAS licence that only includes t Vigilant Central Database and Local Corporate Database cannot use local offline database 2 2 Supported DBMS GCAS database Is a relational database managed by a Database Management Server DBMS GCAS does not develop its own DBMS but instead uses one of the following commercial DBMSes 1 Local corporate database a MySQL version 5 or later b Microsoft SQL Server 2008 untested 2012 or 2014 2 Local offline database a Microsoft SQL Server Compact Edition v4 0 b Microsoft Access 2010 2013 Especially for Microsoft SQL Server 2014 you need to install updates for Microsoft NET Framework 4 from Windows Update Also Microsoft SQL Server 2016 is in technical preview version at the time this document is written hence we do not recommend storing your precious data on a beta DB
89. days R 0 9967 U CV 0 1769 Overridden rules 27 Oct 2014 Up 0 1933 Clear all overriding rules cific rules and device specific rules causing The button clears all workspace specy E pe them to follow the general rules abov Reload Dashboard after click OK Cancel Simply put rules are definitions of conditions causing a dashboard tile to become red Every GC health status displayed on dashboard tiles has its own rules to define above what value or below what value the health status should make the dashboard tile red For example uncertainty of CV has a rule that if a device has combined expanded CV uncertainty more than 0 2 it is unhealthy Rules can be turned on or off When a rule is turned off it doesn t affect the decision whether the dashboard tile should become green or red For example a user decided to display three health status lowest R2 uncertainty of CV and date of last calibration The rule for R is turned on rule for uncertainty of CV is turned on but the rule for date of last calibration is turned off After next refresh it turned out that minimum R is 0 9974 combined expanded uncertainty of CV is 0 1250 and date of last calibration is seven days ago Rule for R makes the tile green rule for U CV makes the tile green but the rule for date of last calibration makes the tile red We expect the tile to become red by now However as the rule for date of last calibration was turned off the tile
90. deleted from database or CSV files though Failed records are never removed from view 4 Never stop GCAS Desktop does not stop data capture operation Someone must come back to the computer later and stop the operation manually through the m Stop button Page 318 of 388 GCAS Desktop Manual Guide rev 14 To prevent GCAS Desktop consumes too much memory RAM GCAS Desktop only display the last 25 committed records Old committed records are removed from the grid view They are not deleted from database or CSV files though Failed records are never removed from view And finally hit the P start button to start capturing data in unattended mode To deactivate unattended mode stop the data capture operation and untick the check box Enable unattended mode 25 2 8 Data Capture Error Log In case of records failing to commit the Error log button usually appears at the bottom left corner of the form gt START Mole composition unnormalised _ Show delta to previous row Commit Status Stream Timestamp ee ee i Butane n Butane neoPentane Pentar mwens oes emo oomo osso oono 02 O committe 1 200606130138 2018010 El commited 1 a14 05 0513005 soso ose os Calibration parameters Commit Status Flag as Timestamp Methane RF bk RF Carbon dioxide RF Ethane RF epee RF
91. disk space and more time to finish a synchronisation process _ Automatically sync to central database server when go online Automatically switch to temporary database if network connection is lost Resume all modbus operations after a successful switchover Do a periodic check if GCAS can return online every 3 minutes And if GCAS can return online Notify me O Automatically switch back to central database Remember current state offline online for next time GCAS is launched First automatic switch on network problem must be checked Then give a check mark on Resume all Modbus operations after a successful switchover Through this way all unattended data capture operations stop temporarily and continue soon after GCAS Desktop enters offline mode Records committed before network disruption are still available on your main database server but records committed after network disruption will be stored on your temporary database You can synchronise records between these two databases later after the network connectivity is up again 29 7 Automatic Detection of Online Connectivity After all the fuss of automatic switchover on network problem GCAS Desktop may ping the database server from time to time in order to see if you can return online To activate this feature open Work Offline Preferences dialogue through the File menu gt Work Offline gt Work Offline Preferences Note This feature works only for offline mode cau
92. enforce the change If other GCAS users are currently logged in to GCAS database on other computers the change will take effect on their user accounts after they log out or exit GCAS Desktop Information Many menus such as Comms menu File menu gt Export Data Tools menu could be included in this menu permission list However if you use i Vigilant central database the database is shared between GCAS Desktop and GCAS Web Unfortunately adding new entries to this menu permission list would break GCAS Web 27 6 Action Permissions In tandem with menu permissions action permissions constitutes the access control list ACL Action permissions control which action menus and in some cases actions in literal meaning itself available to each user role Go to Administrator menu gt Action Permissions to bring forth the Action Permissions form Action Permissions Use this form to assign action privileges to each user role Category Action System Administrator Engineer Engineer2 Partner UPLOAD DATA upload_data_footprint kad upload_data_calib upload data_csv_footprint upload_data_csv_calib upload _data_csy_mole_composition upload_data_mole_composition_spot_sample manual_entry footprint manual_entry_calib new_calibration_certificate new_coefficients_ requires_edit_coefficients new_lag_time new MLC coefficients COMMENTS comments_footprint comments_calib comments_data_analysis comments_repeat_test comments_mole_comp
93. esa a a 251 Zio Snowor Hide Some DEVICES cccciasneicespiaeniasicaetinenieineuraminnusenmia manasa 252 Page 9 of 388 GCAS Desktop Manual Guide rev 14 Zi3 2 Z00mMOde and Selection MOGess cincs once eae 252 2S GSAS Ol CODV UNS CNI aerea aae a E E theta labeled EEE E O 253 213A Export Values tO Microsoft EXCEL n soronorenirn irian ana a a E Apes eaee dates Anneeaeteews 254 21 3 5 Selection Mode MenUsS ss sssessssssssesssessseesssrssseesseesseeossrosseesseesseeosseosstesseesserossrossresseesserossressresseessseoseee 255 Ato 0 GOMPANISONM CL AVEl aes esecek E AG 256 2k Other Visual CUE nanan a date wera idea dual 259 ZEG GOLOUMOMMNG ASSISE ro R A EEO tach a deeds eatatecetiest 260 22 SOJ 0723 2an ode ee EEEE ESETE 261 22 1 MEC COemMEEntS CONCEP orerar e O 261 Zoe MLO Constraints CONCEP anosmio eee ine a 261 22 3 MLC Constraints Override Level Concept a scssssssesesssesesssessssesesssessssesssssesssesesesesessesssesesesseseeeees 263 22 4 The Multilevel Calibration Coefficients FOr wu ccccsssscscsssscscscsssscscsssscscsssscscsesscscsssscscsssscscsssscsssssscsees 264 22 4 1 View Previous Coefficient Set cesesessesessesessesessessssesssssssssesesssssssssessssessessssssesscsessssessesessesessesseseens 264 eda FOMO EE eae i eR hoe eT E E Eo Ev oT TE OR E ee a a 265 22A 3 Greate NeW COCTIGICNU SOU esse vices deco tetera etre adie ieee tener nia ests adidas 267 224A Change Recorda ota tUS ereenn ee EE E E EAEE ER 268 223
94. gradient unlike the usual upward slope However R calculation stays the same Footprint is a special type of calibration data which is usually 1 Is the first data of a GC device or 2 A known good data as a reference of comparison for future calibration data Page 60 of 388 GCAS Desktop Manual Guide rev 14 7 1 The Footprint Form A Footprint CaseStudy3 i Change footprint Load latest footprint DEVICE NAME STATUS TIMESTAMP CaseStudy3 Active 10 January 2012 04 29 Charts Table Health status Comments Show Single point RF Response Factor 33 000 000 30 000 000 25 000 000 20 000 000 15 000 000 10 000 000 z o EL I TI A L 2 E 7 LL 1 fa Cc a O Sa mw o 9 000 000 0 Methane Nitrogen n Butane i Pentane n Pentane Principal purpose of Footprint form is to show footprint records It has three sections of charts which are 1 Response factor chart 2 RF MW log charts 3 Retention time chart To open Footprint form select the device from the device panel then go to View menu gt Footprint Response factor chart graphs the response factor from gas with lowest to highest molecular weight It should have a nice ascending slope otherwise it may indicate problems within your GC device In case you wonder what the dropdown Single point RF is doing at the top left corner that is for ISO 10723 conversion and you also need GCAS feature SO 70723 in your licence
95. i Pentane n Pentane 0 2145049 00 2268716 0 2455701 0 2405993 0 3474 0 1 0 3006 0 1995 Hexane 0 301566 0 1007 Heptane 0 2735286 0 1002 Octane 0 Nonane 0 0 Decane These RF values are _ Single point Multilevel calibrated Previous Click Next and you arrive at the input page In this example we are converting MLC composition into single point composition There are several ways to input mole composition MC values Orthodox method typing them manually row by row 2 Copy and paste from Microsoft Excel or other spreadsheet processing software Make sure the column ordering is correct as you may end up with wrong composition values in wrong gas Click Paste append to paste from clipboard into new rows Existing rows are not affected 3 Import from CSV please specify whether the CSV file follows standard GCAS CSV template or a custom template Keep reading after the screenshot below 4 Import from GC device in database select a GC device date range and the stream number too More about this later Page 284 of 388 GCAS Desktop Manual Guide rev 14 MLC Single Point MC Offline Converter a pete fm Input all MLC MC values here Add the average row Paste append Clear all Note Metane Nitrogen Carbon dioxide Ethane Average 4 99842 545 9 92332364 1 99800091 428255455 24 99028 9 02655 2 00104 428455 82 00215 9 02398 1 9976 4 27084 83 00663 9 91546 2 00499 4 28105 823 00284 E Ti 2 00
96. is only affected by the rule of R and U CV Green meets green becomes green hence the tile stays green To turn off a rule uncheck the corresponding check box on this tab e Rule for lowest R correlation is the most simple rule of all if a device has lowest R below the threshold defined in its Analysis Parameter it is unhealthy e Rules for uncertainty has two configurable fields the uncertainty type absolute or combined expanded and the threshold value Absolute uncertainty changes the unit to the absolute unit such as MJ m for uncertainty of CV while expanded uncertainty changes the unit to percentage e Rules for date of last calibration has one configurable field which is how many days to make the tile red This field accepts decimal number For example 3 25 days means 3 days and 6 hours e Rules for date of last mole composition has two fields the threshold limit and its time unit This field accepts decimal number too Page 195 of 388 GCAS Desktop Manual Guide rev 14 Date rules consisting of rule for date of last calibration and rule for date of last mole composition record are overridable More information about overriding a rule is on chapter 16 2 To delete all overriding rules in one go click Clear all overriding rules on this tab 16 1 3 Uncertainty Calculation Settings ney Dashboard Settings Health status to display Uncertainty calculation settings Which calibration certificate to use Rules Lates
97. lealeil clice ts 47 3 5 BOG GINO UG ssa vsiveolsicieea riven iirc a a esti dares arlidicacee sien ain dear deaeds 48 3 6 AULOMAUC LOGOUL OMIM ACUIVINY assesseer R T E EA 48 Ay The UserinterfacE roces EEE a Seea EENE NONE SEEE 49 4 1 EO EOT e a E 49 4 2 Mam Userinterl dC eceran ees cee ieee aaa aA 50 4 2 1 DEVICE PAIN Cl enaena ana ETETE TA EET TE OE EO TES 50 4 2 2 Recont Device Pahal errer E E A R nae 51 4 2 3 sear NA TOOD aia kec Ea aaa pene TO 51 4 2 4 S BE oe E E A A E A A E E a rE 51 4 3 Choose DEVICES DIOGU Cosnisoneor ieo e a a a dienes 52 4 3 1 Persistent Device Selection ss ssessseesssossssesssesssessseesserosseosstesseesserosstosstesseesseessstosstesstesstesssrossrossresseesseens 53 4 4 PS CNN AUN ONG coe ce nec ec E O A ES 54 4 5 STAN are Colour PASTS st cccscsecttsestaccccssneshdcsedrasCesscasterseeardueazes ides E EE 55 5 A alysis Parameter ocsid aa ia nen Aa iaria AEA AAV Kiakia AEA Aa andia AeA Aiaia ndia inda diadan dda Eds 58 6 G humber Glossary cirai ie ies 59 T Footprint and Calibration Data sssi aiaa adaa aai aaa a a 60 7 1 TG POOL F UAT FOT aorrairra i inn R S E N N sole ice a 61 7 2 Thecautbraton Data FOR gceeccerts te tcet attested cde E A E OOE 64 7 3 View Previous Footprints Calibration Data ccccssssessssssssssesssssessssesssesessssesesessssesesesssessssesesesessseseaeees 66 74 Import New Footprint Calibration Data ccccsssssssssesessssssssesessscssssesssescssssesssssessssesesesssssseseseseeesseseaee
98. lines unlike all other charts in GCAS Desktop which use 2 pixel width Line charts having data points less than 100 have small dot markers along its body Line charts with more than 100 dots are presented without markers like similar to screenshot above Page 251 of 388 GCAS Desktop Manual Guide rev 14 21 3 1 Show or Hide Some Devices To temporarily take a comparison entry off the chart untick its check box at the column Show inside the comparison list Check the check box to bring the line visible If you remove a device or stream from this list its line chart is also removed After you add the device or stream back you need a full refresh to redraw the lost line 21 3 2 Zoom Mode and Selection Mode Click this button to switch between zoom mode and selection mode Set properties and range Start graphing ISO 6976 output to compare ISO 10723 sample Show Devicetag Stream MLC Refresh na 6 gt Crest c7 T l LP Test From To RE Clear MLC cache 27 Jun 2015 E Base pressure Combustion metering temperature Collapse all CV comparison MJ m Device Stream 1 00 1030 11 00 1130 1200 1230 1330 1330 1400 1450 15 00 1550 Page 252 of 388 GCAS Desktop Manual Guide rev 14 Drag to a Drag to Zoom Select Toggle button to switch between zoom or selection mode Zoom mode enables zooming to a specific area of the chart Drag a rectangle over the area you want to zoom in P
99. neopentane ol s Test C9complete Daniel C9 complete P 4 STUDY STUDY TUDY Daniel C6 without neopentane CASE STUDY STUDY STUDY Daniel C6 without neopentane CASE ST 12 devices Page 294 of 388 GCAS Desktop Manual Guide rev 14 Go to the Subscription menu gt Devices This form lists all GC devices from all groups assigned to your user account Note Default installation of GCAS Desktop specifies that you have to be at least a super user to access this form 24 1 1 Create Edit Delete Devices 24 1 1 1 Create a New Device Click New on the toolbar to create a new device Note Your GCAS licence specifies how many devices you can create You cannot create more devices than this limit and also if you try to open a GCAS database containing number of devices exceeding this limit you need to choose devices to be accessible during that session Important If you use the old GCAS licence version 2 the limit of GC devices you can have is 10 ten Ce New Edit gt Delete New Device Choose the group and workspace Ee this device belongs to My_New_Device Select a workspace ABB C7 complete a gt TEST4 ABB C7 without neopentane i TEST4 a gt TEST 2 Wb TEST 2 Ft decline Daniel C7 without neopentane gt ge CASE STUDY aes Device dateformat m d y H M Daniel C6 complete Daniel C6 without neopentane Daniel C7 complete Save and add another Cancel 12 devices
100. obscure part of the chart Click once on the annotation to reveal the close icon Click again on the close icon to remove the annotation Footprint form does not have this feature Page 78 of 388 GCAS Desktop Manual Guide rev 14 es 2 cE F This calibration does not include retention time data N 270 6 N 227 0 7 7 Zoom and Scroll RF Chart Only Daniel C9 and C10 devices have a distinctive characteristic on their RF charts The line chart rises slowly but suddenly jumps to a much higher number starting at the first gas being detected by the second detector Response Factor 100 000 000 80 000 000 60 000 000 40 000 000 Response Factor 20 000 000 0 COs Methane Nitrogen Ethane Propane i Butane n Butane i Pentane n Pentane Hexane Heptane Octane Nonane heaPentane In order to zoom a part of this chart drag a rectangle on the area you would like to zoom in Use the scroll bars to pan the zoomed chart To zoom in further drag another rectangle area To zoom out either click both circled minus buttons or right click on the chart then select Zoom All Out Page 79 of 388 GCAS Desktop Manual Guide rev 14 Response Factor Nitrogen i Pentane n Pentane neaPentane Response Factor al Click to zoom out 20 000 000 15 000 000 10 000 000 5 000 000 0 Clickto zoom out Z 2 z E z i D a 5 z 5 a im x m a g y I 2 5 Z 2
101. or append new rows into this grid the average values are updated automatically For CSV import select whether the CSV file follows the standard template or you are using your own CSV file Select the second radio button for CSV files with additional columns before the first gas or with additional header rows before the first row or with different gas ordering or combination of these Define at which column and which row the actual data start If necessary change the gas order definition to match your CSV file Page 278 of 388 GCAS Desktop Manual Guide rev 14 Reorder those gases using drag and drop operation inside the green area Had there any gases not present in your CSV such as octane C8 nonane C9 or decane C10 drag them to the trash bin icon and they will move to the unused gases pink area Drag gases out of the pink area back into the green area to reuse them if necessary Or import from CSV file Or use data from a device E OneDrive t Vigilant CSV import test Tes MLC RF csw Browse Import This CSV file follows standard GCAS CSV template This CSV file has data starts at column 1 A w row having gas order of Te eo Finally click Import GCAS Desktop reads your CSV file and appends data into new rows Existing rows are not affected Also the converter form reveals an additional column named Notes and writes the CSV file name followed by row number If you import data from a device second tab of the tab
102. ra 0 045187 MJ m 0 025519 g mol 0 053962 0 000729 0 001143 kg m Expanded relative uncertainty of each component k 2 Methane 862563 Uncertainty from GC re Nitrogen 464203 0 6976 inputs Carbon dioxide 389614 H CALCULATIONS Pae Dea Propane 426122 Isobutane 454718 Co Butane 476669 c2 OUTPUTS Uncertainty of CV kenpeniane ERA Ki l Isopentane 953247 Uncertainty of MW cor TETEFTE 016638 Uncertainty of Wobbe Hexane 192167 gt Average mean 638588 Root mean square 734418 Hou a t to ot t ut ot on ou ot SOrFPrFPOreaga eae A of af of of af of af of Bf ae Bf of af Legend Input editable Input from database Intermediary calculation Output Read only Recalculate F5 C Show intermediary calculations Previous page Next page gt 11 5 2 Detailed Pages There are five detail output pages which are uncertainty for CV uncertainty for MW composition uncertainty for Wobbe index uncertainty for relative density specific gravity and uncertainty of standard density These pages share the same layout and same logic for five ISO 6976 outputs Page 155 of 388 GCAS Desktop Manual Guide rev 14 Uncertainty Calculator Test3 rec f fi Uncertainty of calorific value MJ m Precision 6 digits 5 INPUTS A i Uncertainties to includ z EERS E Normalised a dlrldiachoaaes Component mole U cal gas U repra Un
103. should contain 1 one for every row If any other number appears here that indicates your offline database must be upgraded Otherwise you won t be able to delete the group Contact i Vigilant customer support to upgrade your offline database or use the supplied GCAS database upgrade tool 27 3 1 Create Edit Delete Groups To create a new Group click New on the toolbar Enter the group name followed by business information of the company that is being represented by this new group Finally click Save To edit a group highlight the group on the list and then click Edit button on the toolbar Similarly to delete a group highlight the group then click Delete Page 334 of 388 GCAS Desktop Manual Guide rev 14 Groups New G Edt Delete Show my groups Edit Group Group name CM 1 group Your user account is assigned to this group Note Creating a group also creates one workspace within that group The workspace has initially a same name as the group After a new group has been created your user account is automatically assigned to the new group Head to chapter 27 4 Assign Users into Groups if you don t like this assignment and to remove yourself from this group 27 3 2 Add Edit Delete Workspace within Groups To edit workspaces within a group click on the workspace count of that group Page 335 of 388 GCAS Desktop Manual Guide rev 14 oups New Edt Delete gt 5 how my gro
104. started Connected to GC Operation was successful new data recemed Record commit succeeded Operation was successful new data received Record commit succeeded 000000045 TCP IP connection was closed by remote peer Initiating a delayed stop procedure Initiating a delayed restart procedure In order to preserve computer memory the connection log only retains the last 40 000 log items When the connection log has reached 40 000 items the oldest log items are discarded one by one Click Clear log to empty the entire connection log immediately Type the search word in the search box and hit Search to find the word in the connection log Before clicking Search you can change the search filter dropdown to limit the searching area Notice that searching a term in connection log will search the entire log not only the filtered log Click e Finish searching to end the search mode 1 Connection Log tests lish W amp Show hide Search Timestamp 06 Oct 2014 12 13 3 Lei PE L Type Foll ul new data recerved et Lee KE n Pat TEF FP E LEF Ll LALAM IEE Fri u ee LOLA Page 322 of 388 GCAS Desktop Manual Guide rev 14 25 3 Modbus Error Codes and Handling Bad things happen during data capture Source of problems might be bad cables aging hubs overloaded router Wi Fi interference and so forth When GCAS Desktop does not get a proper response from the GC device it rai
105. ta Cap UTE siia a aaa a aa ES 300 Page 10 of 388 GCAS Desktop Manual Guide rev 14 25 COMTGUEG Regte Mappings senina a i ee ete 300 25 TNE vREGIStOr MCD DINGS FON esane o een E ET EEE 300 25 12 Bit Lengin anG Byte Ora ening sercescssrinanini i onna dram darandvat dem ncsiondntanacie 301 25 1 3 Calibration Parameter Registers ou sssssssssssssssessesssessesssessssssessesssessessseesesssessssssessssseessseseesssesseseees 301 2S lt IVIOIEZEOMIBOSITION SURCAIINS cerpen R elec cece lei ella idee tol lee ae lanl ola 303 25 1 5 What if my GC device cannot provide data for SOME GAS ou eeesessessesessesessesesesesteseeseseeseseeseees 306 25 1 6 Backup and REStOne CONMOUNAUON ssion aiiin ai NEER 307 Pe Ved Reset TOD SUM T essays cae oases Mase ccczenes te cceneaaceas tessa teense 308 Pasa oma 18 lt 7 RO I eee ee Neue NE aeRO SSMU TET TEn RINT On URN RTIC TOE Ven CunT ANT AT ORT BRIO URN ET CRTIC RE VEEN RE ETN SPSS 308 Dae VO UNOS SOOM oc aaa aes 309 252 Capure Da lel ne nra aE e wees rsseinn ee esse eee ere ener enone 310 Doe TEGE CONNEC FONN i ee cue eine ater E eee eee enone eens eee 310 2B 2 2 SCOMMECIIOM SCUUMOS eE aS Ea 311 2523 DEVICE SOT sereen iecenncs uns teaevacs aeanee te eereateameeren eet ia eeneotenensiaeiees 312 Bs VEU APS lel Vi LI ON Sota ae ata a E ee ere 313 a ao mms KC GS Os 0 ae eee CR TT PETG OTRO TE SOTO SERCO CTS UR CE TUTOR E N 314 25 21 05 StOp Capture ana ComM DU corsets esas esas e
106. that could assist users when analysing the GC performance When something goes wrong it is a good idea to compare the parameters stored in this form and the actual condition observed on the GC device To view or edit analysis parameter for a particular device select that device on the device panel on the main user interface and then go to the View menu gt Analysis Parameter Analysis Parameter poj Cycle time 5 R limit 0 000 1 000 Column temperature Detector temperature 79 3 deg Carrier gas pressure 91 psig Valve actuating pressure 130 psig Bypass flow Measurement vent valve 3 ON 16 6 cc min Measurement vent valve 3 OFF 15 9 cc min Bridge balance mV 0 09 mV Sample vent flow 60 cc min Sample pressure 2 ba rg Save Cancel The first two fields cycle time and R limit accept only numeric value The rest can accept alphanumeric characters If no R limit entered GCAS assumes the default R threshold to be 0 995 Click Save to commit the change Cancel to discard the change or Reset to reload previous values If all input fields are greyed out your user account might not have sufficient action permission to edit Analysis Parameter Contact your GCAS administrator Page 58 of 388 GCAS Desktop Manual Guide rev 14 6 C number Glossary On GCAS Desktop and GCAS Web user interface users might see C1 C2 C3 and so on These are carbon atom count of supported alkane gases Current ver
107. the first detector only or from the second detector only Retention Time Filter by detector Detector 1 Hexane 24 0 Nitrogen Methane Propane i Butane n Butane CO i Pentane n Pentane Ethane 0 50 100 150 200 250 Retention Time 5 Example of retention time chart for ABB C6 GCs There ts a filter dropdown on the right side Page 63 of 388 GCAS Desktop Manual Guide rev 14 7 2 The Calibration Data Form Calibration Data DEMO1 gt E fy Change calibration data E Load latest calibration data g E C Draw thinner lines Show footprint DEVICE NAME STATUS CALIBRATION DATA TIMESTAMP FOOTPRINT TIMESTAMP DEMO1 Active 10 November 2014 08 13 08 November 2014 13 12 Charts Tables Health status Comments Show Single point RF Response Factor 25 000 000 20 000 000 15 000 000 10 000 000 i ao ow 1 Di E Pan w i o 6 7 LL LaF LA Cc ao oe Li pak of 3 000 000 Methane Ethane Butane n Butane neoPentane i Pentane n Pentane Footprint Calibration data The main purpose of Calibration Data form is to show calibration data records and also to compare this calibration data to the immediate preceding footprint Similar to Footprint form the Calibration Data form has RF chart RF MW log charts and RT chart To open Calibration Data form select the desired device on the device panel on main user interface and afterwards go to the View menu g
108. the chart afterwards If your selection rectangle covers more than one line chart GCAS Desktop prompts you to select which ones to set as inactive These menus Compare Averages both of them and Set Underlying Mole Composition Records as Inactive may display a confirmation dialogue like the ones below Setting mole composition records as Inactive should merge a pair of single point and MLC entries of the same device same stream number into one entity Average comparison requires you to select exactly two entries Which ones a Which ones l Action Set records as inactive Action Compare averages SELECT TWO Test stream 1 L Test stream 1 single point I Test7 stream 1 L f Test stream 1 MLC L f Test7 stream 1 single point Confirmation dialogue boxes Windows 10 does not render form border for small dialogues 21 3 6 Comparison of Averages 21 3 6 1 The Average Chart For a rough visual comparison ISO 6976 Trend Comparison form provides an additional bar chart that shows the average value of every comparison entry Click Show average button the one having x Page 256 of 388 GCAS Desktop Manual Guide rev 14 symbol to reveal this chart The average value of each bar is displayed on the label sitting at the top end of the bar ISO 6976 Trend Comparison iT I A JJI 4 f 2 ro T FIPS aes oF Fange Bod oL ES ey e SSR ronm T Crore SO gronn pr kaid Lii AY l RA i RA AS Fii faa Lm l m IL CLAI
109. the database server help reducing the calculation time Because uncertainty trend calculation is slow GCAS Desktop provides Pause button to temporarily halt the calculation and Stop button to abort the calculation The keyboard shortcut F7 is designated for Pause button and for Stop button While calculation is in progress you cannot use other modules or they will run slower than usual This is because the database server is busy serving the data required for uncertainty calculation This is how the form looks like after the calculation is finished od Uncertainty Trend DEMO1 Show W ucv LI uiMw LI Uw LI use LI Ulp N U CV Trend DEMO1 Threshold UC lt Back to parameters View comments gt This is an example of a healthy GC The blue uncertainty line is below the red threshold line Actually there are five lines e Uncertainty of calorific value U CV e Uncertainty of molecular weight composition U MW e Uncertainty of Wobbe index U lw e Uncertainty of relative density or specific gravity U SG e Uncertainty of standard density U p The five check boxes at the top of the form control whether to show or hide the corresponding line chart By default GCAS Desktop only displays the uncertainty of calorific value because it is the most interesting property Page 177 of 388 GCAS Desktop Manual Guide rev 14 Below is the same chart with the threshold line hidden from view The Y a
110. the offending health status es is displayed using red font u R 0 9977 R 0 9947 U CV 0 1124 U CV 0 1606 ae 29 Sep 2014 01 Oct 2014 30Sep 2014 07 51 01 Oct 2014 17 29 Example of a healthy GC and unhealthy GC When you find a health status displayed using black font it indicates the rule for that health status is turned off Should a rule be turned off it does not affect the final decision whether the dashboard tile becomes green or red regardless of the health status itself passes or fails More details about rules is on chapter 16 1 2 R 0 9974 U CVJ 0 1206 Fe 30 Sep 2014 30 Sep 2014 07 56 Example tile when rules for date of last calibration and date of last mole composition are turned off Dashboard window displays the time of last refresh on the toolbar This information may help if you leave Dashboard open to monitor all your devices continuously Moreover if you leave Dashboard open for a prolonged time we recommend to turn off the idle timer in order to prevent automatic logout on inactivity On a different topic there is an auto refresh timer which is configurable through Dashboard Settings dialogue Dashboard E 2 Refresh all Stop calculation Last refresh 09 13 7 minutes ago i4 Dashboard settings F Help ee Page 191 of 388 GCAS Desktop Manual Guide rev 14 16 1 Dashboard Settings From an open Dashboard window click Dashboard se
111. the third GC a eae Checked 10 Unchecked GCAS Desktop waits 10 minutes then start all GC ines a a pmo Unchecked Checked 1 minute 1 GCAS Desktop starts the first GC Connect form immediately 2 GCAS Desktop waits 1 minute then starts the second GC Connect form 3 GCAS Desktop waits 1 minute then starts the third GC Connect form and similarly for the rest of queue Unchecked Unchecked GCAS Desktop starts all GC Connect forms in the queue simultaneously and immediately This configuration is the same as Comms menu gt Start All Connections gt Now If any of GC Connect forms in the queue Is started manually or is closed before the timer countdown reaches zero it is automatically removed from the queue The GC Connect Delay Start form shall skip to the next GC Connect form in the queue When this queue becomes empty the timer stops Page 328 of 388 GCAS Desktop Manual Guide rev 14 26 Report Under construction Report is a planned module for printed report generation A simple report typically contains latest calibration data latest footprint historical RF trend RF error trend RT trend and RT error trend Another type of reports include ISO 6976 trend and uncertainty trend Report module is not yet developed but we reserved chapter 26 for report module Our estimate is on GCAS Desktop version 1 9 or later because development of ISO 6976 Trend takes priority Stay tuned for future releases of GCAS Desktop Pa
112. tick the check box Enable unattended mode Enable unattended mode Stop operation automatically C After 20 After 6 hours At 15 43 50 on 06 Feb 2014 gt C Never stop Notice that the Commit button Save to CSVs button and Clear grid button disappear from the bottom of the form We don t need these buttons as the records would be committed automatically Choose one of the following automatic stop triggers 1 After x records collected default x 20 GCAS Desktop stops the data capture operation after x new records have been collected Operation stops whichever record type reaches x first whether calibration parameter records or mole composition records 2 After x period of time GCAS Desktop stops the data capture operation after x period of time whether it is x seconds x minutes x hours or x days You can choose from as short as 15 seconds to as long as 90 days Note To prevent GCAS Desktop consumes too much memory RAM GCAS Desktop only display the last 25 committed records Old committed records are removed from the grid view They are not deleted from database or CSV files though Failed records are never removed from view 3 At specific time GCAS Desktop stops the data capture operation at the defined time Note To prevent GCAS Desktop consumes too much memory RAM GCAS Desktop only display the last 25 committed records Old committed records are removed from the grid view They are not
113. views namely simple view and advanced view The first time this dialogue opens it is on simple view Ei Set Status for Multiple Records Set status to Inactive forall mole composition records between 01 October 2014 11 57 E and 02 October 2014 11 57 lr having stream number w Cancel Advanced gt 8 6 1 Simple View Using simple view you set the desired record status active or inactive for all mole composition records between the two date time perimeters This may or may not be filtered to a stream number The user interface in simple view is pretty straightforward Depending on how many stream numbers ever recorded into the database stream number selection may look like this Set Status for Multiple Records Setstatusto inactive forall mole composition records between 01 October 2014 11 57 ly and 02 October 2014 11 57 Er having stream number all streams Baam a j2 l If you choose all streams that will change record status of all mole composition records within the defined date boundaries regardless of stream numbers except spot samples If you choose spot samples the status change only applies to spot sample records within the date interval All next choices afterwards are the actual stream numbers available You can also type the desired stream number if it is not on this list To confirm click OK and GCAS Desktop begins the batch operation Note GCAS Desktop does not add automatic co
114. will be overlaid with a diagonal strokes Page 156 of 388 GCAS Desktop Manual Guide rev 14 indicating the values are disregarded Ucal gas is treated as zero so the formula above only contains Urepeatability and Ureproducibility ooh mea Uncertainty of calorific value MJ m m E INPUTS A 2 be Uncertainties to includ z zP ormalise a Toon Uncertainty from the c Component mole U cal gas Ulrepra einer U repeat repeat at Uncertainty from GC re fraction i Repeatability Methar 0 803820 20de 0 010814 0 0459 0 02325 Linearity Bea 7a Uncertainty from GC r i E E n oT 3 CALCULATIONS O A O a2 OUTPUTS n Butane onse 78 a oosa ows 0 159796 00108 Summary Nespetoe ce onmes ae ooer a i E EY e a ar Uncertainty of Wobbe Y eee esa odse oos odesser gt i 06 a P e Legend Combined standard uncertainty e Coverage factor k L mpal aati Combined expanded uncertainty el Input from database CV absolute uncertainty MJ m Intermediary calculation el Output Read only Recalculate F5 _ Show intermediary calculations Oe aaa The Uncertainty Calculator form when Ucatgas is excluded Notice the CV absolute uncertainty is different from the previous screenshot 0 044011 versus 0 045389 MJ m There is a precision control at the top right region of these pages This slider trackbar controls how many decimal digits to display on the grid By default GCAS Deskt
115. y Clipboard Ma Font F Alignment Al fe 0 03413 A B D E 1 0 03413 2 0 12983 3 0 06183 4 0 05549 5 0 05202 6 0 0556 7 0 06596 8 0 06424 9 1 65817 10 90 12414 11 2 1769 12 5 456 13 14 Click ri Clear to reset all fields back to zero Page 96 of 388 8 5 GCAS Desktop Manual Guide rev 14 Change Record Status Single Record Similar to footprint and calibration data record every mole composition record has a status bit indicating either active or inactive Similarly inactive records will not appear in data analysis and will not affect the calculation of mean and standard deviation uncertainty calculation ISO 6976 trend and many others To change record status of the mole composition record currently loaded do the following 1 From an open Mole Composition form go to Action menu gt Set Status If you do not see this menu your user account may not have the action permission for it Contact your GCAS administrator Spot Sampling Import Data CSV Set Status Set Status Bulk Send to ISO 6976 Calculator Add Comment This will show Set Status dialogue Choose the appropriate record status then click OK Set Status Active _ Inactive The form will reload the record and you should see the new status at the upper section Afterwards the Comments tab opens automatically and it is recommended to write a comment of why the record status w
116. 0 The following message box confirms that your licence and registration key have been successfully installed On some Windows versions this message is displayed in a command prompt window instead of a message box GCAS Activator Copyright 1 Vigilant Technologies Ltd 2014 Version 3 3 1 0 The licence has been installed Licence version 3 Licensed to F Licence type Lifetime Licence start date N A Licence expiry date N A does not expire Features included 22 features 0x0F71FFDE Number of GC 100 Computer code 18AB 1 47 771C Thank you for using GCAS 11 Click OK and GCAS Desktop is activated ready to use 1 4 5 Instant Trial Instant trial is offered to new and prospective customers to try GCAS Desktop quickly without the hassle of sending your computer code and waiting for your licence in our reply and for us to set up a database for you Unlike regular trial licences instant trial licence is only valid for 4 four days including the day you started the instant trial After your trial period expires GCAS Desktop will stop Page 25 of 388 GCAS Desktop Manual Guide rev 14 working You can then request for an extended trial or purchase a full licence altogether Contact us to get an arrangement To try GCAS Desktop using instant trial click Instant 4 day trial on this window Activation required GCAS requires a valid licence to run Please enter your licence now Instant
117. 0 have small dot markers along its body Line charts with more than 100 dots are presented without markers 17 3 1 Show or Hide Some Devices Untick the checkbox at the column Show inside the comparison list to temporarily hide a device a line on the chart Check the checkbox to bring the line visible Show Device tag Stream DEMO DEMO 37044 DEMO 2 TEST 2 4 37044 DEMO1 1 Remove Remove all If you remove a device from this list its line chart is also removed After you add the device back you need a full refresh to redraw the lost line 17 3 2 Scaling Equalisation GCAS Desktop stores mole composition records as they are in the database There is no information about its scale stored in database Most devices use percentage scale 0 to 100 Some others output fraction scale 0 to 1 GCAS Desktop determines scaling by the unnormalised total For example if the unnormalised sum is near 1 the device uses fraction scale If the sum is near 100 it is percentage If near 1000 it is permillage bo GCAS Desktop supports fraction scale 0 to 1 up to PPB scale 0 to 1 000 000 000 officially This becomes a problem in mole composition comparison What happens when you compare device A with percentage scale and device B with fraction scale The answer GCAS Desktop plots mole composition records as they are The two line charts will appear far apart as device A has methane composition about 70 percentage scale wh
118. 09 100 17 587 500 7 541 100 17 200 000 17 547 00 T n Butane RF la a 37 502 300 TAST S LoS a feb 17 613 700 7AT la 17 00047 45 j LG TES 17 600 000 A1410 psan 2 000 a RESTON ag TTE 17 101 800 1723 gt MA 23 i ame ba Ti et ees RF 3 17 400 000 z730 ry erea 17254900 17 200 000 BRE ei i pirati s00 17 067 500 17 000 000 4400 sar HATA odes Pot ace Ty 7125000 16 800 000 ie J ine 16 Ge8 AO tg 17 014 300 B46 200 i l PEE 5676 00 16 262 900 28807400 16 600 000 23 Oct 06 Nov 13 Nov 20 Mov 27 Nov 2011 2011 2011 2011 2011 Page 139 of 388 GCAS Desktop Manual Guide rev 14 Crosshair cursors are the dotted lines appearing on the chart when you left click on it or as a remnant of zoom operation These may act as a ruler or guide To remove them click Hide crosshair cursor button or right click on the chart then select Hide Crosshair Cursors 1 0000 1 02 07 oe e 3 C4 C5 C6 0 9975 arian meer eerie Pass limit 0 9950 y 0 9925 0 9900 0 9875 3 26 Jan O2 Feb O9 Feb 16Feb 23 Feb O2 Mar O98 Mar 16Mar 23 Mar 2014 2014 7014 2014 2014 2014 2014 2014 2014 To use black background right click on the chart and click Toggle Light Dark Background menu Use the same menu to revert back to white The black background is permanent when you save the chart as image file or copy chart image to clipboard VILL palat JCIE LNAI t type Recor led Save Chart as Picture
119. 11 1 394E 11 2 S654E 11 1 098E 10 6 8382E 10 2 8147E 15 0 2 8717E 16 2 2411 E 17 2 2411 E 17 2 2002E 16 1 075E 15 3 0725E 14 Display style Auto Number _ Scientific Z Description During edit mode you can edit the numbers in the grid Date of test field at the top and Description text box at the bottom of the form also become editable Note Edit mode is mainly intended for editing the description or correcting minor mistakes If there are too many coefficients to edit we suggest you to create a new set and set this record to inactive instead MLC Coefficients form does not have comment feature Put short comments in the description text box if you like You can paste the coefficient numbers from Microsoft Excel or other spreadsheet editing software as long as there are 4 columns and equal number of rows Click Paste link above the grid to paste the numbers The Reset link resets all numbers in the grid back to zero When you finished editing the numbers and the description click Save button or go to Action menu gt Save Changes to commit the change The form exits its edit mode and becomes read only again Page 266 of 388 GCAS Desktop Manual Guide rev 14 rator Window Help DEVICE NAME STATUS Fa DATE OF TEST Test6 Active 2014 Ge Otherwise to cancel editing and discard all of your changes open Action menu and select Edit Mode again to remove its tick mark This will exit ed
120. 1297 9 91 29699439 9 9261 164393 9 92341 24402 9 9148655 741 5 92 FAB 7427 9 929836 7307 9 9246563465 9 9191250136 1 99784 7 6412 1 9950001166 2 000534341382 1 995307535623 1 982869366339 2 00085641 4 1 9973834339 2 004675 758 2 0023785606 20041456247 1 9898497554 1 9992431332 Unnormalised Normalised scale Auto a Show unnormalised total Export to Excel Save as CSV l Copy to clipboard Previous By default the displayed result is normalised Check Show unnormalised total to reveal the unnormalised total column after decane Select the radio button Unnormalised or Normalised to flip all numbers between the two Unlike RF converter MC converter provides Compare column which contains buttons to compare normalised input before conversion versus normalised output after conversion These buttons call the Compare tool window similar to the screenshot below Check Show difference to reveal the absolute delta column which is the absolute value of difference bias between input composition and conversion result Page 287 of 388 GCAS Desktop Manual Guide rev 14 Align decimals Show difference Input Output Input E Component unnormalised a eee WS normalised normalised MLC MLC single pt Methane 84 99032000 84 96445682 vs 84 96599382 M 0 00153701 Niroge 55250000 SS27ST40 ae ssarsamna i oooozaez7 Carbon doae zozo 2oooes1oo vs
121. 2 No device selected G i Vigilant New server Microsoft f a CASE STUDY Bees CaseStudy1 Ler CaseStudy2 Ade olen aa PSeStudy3 Workspaces AseStudy4 BFE CaseStudys aN gee CaseStudy6 F di eee D ema Pra BrE DEMO BPE 370XA DEMO LPP oanco One group may have several workspaces and one workspace contains many GC devices One GC device cannot be assigned to multiple workspaces Chapter 24 Device Management explains more about creating moving and deleting devices requires user type super user Chapter 27 3 Manage Groups explains about managing groups and workspaces within groups requires user type administrator Workspace C Page 45 of 388 GCAS Desktop Manual Guide rev 14 3 3 Edit Your Profile and Change Your Password Each user has their associated user profile and credential User profile is a set of personal information such as real name email address postal address and phone number Credential is the username and password required to log in to GCAS database 3 3 1 Edit Your Profile To edit your user profile follow the steps below 1 Go to the Profile menu gt Edit profile If you do no see this menu your user type may not have the menu permission for it Contact your GCAS administrator Profile Change Password Idle Timeout Log Out Ctrl L 2 This menu brings forth the Edit Profile dialogue Edit Profile Full name Email Phone number Address Time z
122. 23 of 388 GCAS Desktop Manual Guide rev 14 21 461 47 407 61 461 Xx values ss wi g m mM l 0 8979 1 0979 1 2979 14979 1 6979 Log A values Difference between regular X Y correlation top and logarithmic X Y correlation bottom Page 224 of 388 GCAS Desktop Manual Guide rev 14 19 ISO 6976 Calculator ISO 6976 Calculator is a tool to calculate the calorific value CV molar mass composition Wobbe index relative density and standard density of any given mole composition as defined by ISO 6976 1995 standard Note To use ISO 6976 Calculator you need the GCAS feature SO 6976 Calculator in your GCAS licence ISO 6976 calculation takes four inputs Mole composition Base pressure Combustion temperature ae iS Ss Metering base temperature Mole composition input may come from a manual input or an existing record Base pressure is typically the atmospheric pressure 1 atm or 101 325 Pa Combustion and metering temperature affects the constants used in the calculation therefore GCAS Desktop limits the available selection of combustion metering temperature pair into six pairs e 0 C 0 C e 15 C 0 C combustion temperature 15 C base temperature 0 C e 25 C 0 C e 15 C 15 C the default e 20 C 20 C e 25 C 20 C 19 1 The SO 6976 Calculator Form There are multiple ways to open ISO 6976 Calculator form 1 For one time offline calculation Go to the T
123. 2302394 18 59397063 18 59299613 51 01910695 51 01791319 0 643447286 0 64341333 0 788486553 0 78844493 13 15 May 2015 06 00 40 90580908 40 90469273 18 57150543 18 57109828 51 02609506 51 02526584 0 642665974 0 642651784 0 787529114 0 7875117C 14 16 May 2015 06 00 40 88915361 40 88770391 18 56164374 18 56112132 51 01893883 51 0178513 0 642322891 0 642304728 0 787108681 0 78708633 15 17 May 2015 06 00 40 9220434 40 92028017 18 57872093 18 57795876 51 03635947 51 03521373 0 642917501 0 642890964 0 787837337 0 78780477 16 18 May 2015 06 00 40 88497263 40 88348204 18 56638915 18 56581538 51 00718921 51 00612272 0 642487435 0 642467454 0 787310389 0 787285 amp 17 19 May 2015 06 00 40 91969417 40 91794846 18 58889611 18 58810366 51 01941356 51 0183308 0 643270794 0 643243211 0 788270299 0 78823644 18 20 May 2015 06 00 40 97468616 40 97236793 18 62147951 18 62027036 51 04299882 51 04178269 0 64440501 0 6443628 0 789660175 0 78960855 19 21 May 2015 06 00 40 87627682 40 87481634 18 56867263 18 56811478 50 99320728 50 99215762 0 642566391 0 642546928 0 787407098 0 78738324 20 22 May 2015 06 00 40 87678683 40 87505597 18 56750038 18 56678664 50 99545715 50 9942833 0 642525727 0 642500894 0 787357287 0 7873267 amp 21 23 May 2015 06 00 40 90419274 40 90297392 18 57431176 18 57388567 51 02020936 51 01927865 0 642763459 0 642748605 0 787648591 0 7876303 22 24 May 2015 06 00 40 92424934 40 9223524 18 59927716 18 59836363 51 01079196 51 00969012 0 643631531 0 643
124. 24 November 2014 13 05 select top days 24 November 2014 13 01 Select top 30 records 24 November 2014 12 57 htl 24 Mnwvermher 2014 12 53 as 4 multilevel calibrated mole compositions w Note There is no Convert To feature for bulk operation because it may damage multiple records Page 109 of 388 GCAS Desktop Manual Guide rev 14 8 10 4 MLC Constraints We moved the explanation about concepts and application of MLC constraints to chapter 22 2 Most of the time users need not to worry about MLC constraints However there is a slim chance the default MLC constraints generates silly unnormalised total such as in the screenshot below The ethane exceeds 150 which is nonsense In those rare cases you may need to override the MLC constraints in order to get the correct result Read more on chapter 22 2 about MLC constraints Mole Composition 9 Ee Change record ES Load latest record DEVICE NAME STATUS TIMESTAMP ESS Active 10 November 2014 06 54 00 Chart and Table Normalised Normalised Unnormalised Stream 1 MLC Component percentage percentage eee single MLC i Hexane 0 1013 n Butane 0 1416 oosa 078 B ioernane B Methane ec cor Methane no A a o f om a 0 8137 aq m oa or oon aa q 9974 esd JDE RE ga Remove mode Colourblind assist Show legend Show unnermalised _ High precision _ Show difference Page 110 of 388 GCAS Desktop Manual Guide rev 14 9
125. 285 4 27536 24 99916 9 93033 2 00456 428898 24 98901 5 32429 1 98967 427076 69 00 756 3 31911 1 99928 4 28194 0 0 0 Ori mport from CSV file Or use data from a device Import MC inputs This CSV file follows standard GCAS CSV template This CSV file has data starts at column 1 4 having gas order of e Previous Next Above the grid there is a check box called Add the average row This check box inserts a special row at the very top which contains the averaged value of all rows below it Average row will be converted to MLC or single point too depending on selected direction during the first page If you delete some rows or edit some rows or append new rows into this grid the average values are updated automatically All numbers in this grid are treated as unnormalised GCAS Desktop normalises them before performing ISO 10723 conversion For CSV import select whether the CSV file follows the standard template or you are using your own CSV file Select the second radio button for CSV files with additional columns before the first gas or with additional header rows before the first row or with different gas ordering or combination of these Define at which column and which row do the actual data start If necessary change the gas order definition to match your CSV file Reorder those gases using drag and drop operation inside the green area Had there any gases not present in your CSV such as octane C8 nonane C9 o
126. 3 30 1340 13 50 14 00 Page 242 of 388 GCAS Desktop Manual Guide rev 14 If you need higher precision right click the chart and tick Use 8 Decimal Precision on Labels Untick this menu to revert back to 4 digit decimals 62 85 62 80 62 75 62 70 62 65 62 76535058 CV Trend CY 62 81024508 62 79103585 Ge TE AD bANAS 26257 ZTT 20079 6269583523 62 70312452 6267TR48550 G2GA0TJE ga Feo 62 67875630 13 30 00 13 35 00 13 40 00 13 45 00 13 50 00 13 55200 14 00 00 In case of current ISO 6976 line and previous ISO 6976 line are so close together click N Use thin lines to draw the chart using 1 pixel width lines 45 40 43 20 47 80 47 60 CV Trend Previous CV Y 47 40 S 24 Jun 24 Jun 24 Jun 12200 16 00 2000 20 10 Export Values to Microsoft Excel Once the chart has been graphed completely click amp Copy to Microsoft Excel This button opens a new Excel worksheet Then GCAS Desktop writes all data points of all line charts onto this worksheet Data source and options Plot from 15 Jun 2015 09 41 lr to 15 Jun 2015 13 41 lr Records to mot 96 ISO 10723 conversion Convert to single point we Compare both _ Display mean and 2 standard deviations View summary Drag arectangleto Zoom Select Page 243 of 388 GCAS Desktop Manual Guide rev 14 Note This feature requires Microsoft Excel 2010 2013 2016 or later to be installed GCAS Desktop w
127. 3 feature in your GCAS licence which we will explain very soon this tool can also compare the single point composition vs multilevel calibrated composition of the same device same stream number Show Device tag Stre Devicetag Stream MLC DEMO DEMO 2 wi L 370XA DEMO 3 044 DE 4 v L Remove Remove all Remove Remove all Example of comparison list for users without ISO 10723 left and with ISO 10723 right Page 205 of 388 GCAS Desktop Manual Guide rev 14 The column Show contains check boxes which is used to hide or show the line chart of corresponding comparison entry after the chart has been rendered completely Users having GCAS feature SO 10723 in their GCAS licences see an additional column named MLC which also contains check boxes This is the single point MLC switch Tick the check box to graph multilevel calibrated composition otherwise leave it unticked to graph single point composition To remove an entry from the comparison list highlight its row on the grid and then click Remove or press on your keyboard Everytime a comparison entry is removed from the comparison list its line chart is also removed However if you add it back you need to redraw the chart because its data in the cache has already gone This is the difference between removing an entry versus temporarily hiding it by unticking the check box inside the Show column In addition click Remove all to empty the comparison list and s
128. 32 bit Modbus then GCAS Desktop assigns 111 for nitrogen 112 for carbon dioxide 113 for ethane and SO On You can also copy Modbus register addresses from Microsoft Excel or other spreadsheet processing software Press Ctrl V inside the first text box and the rest will follow Alternatively click cid Paste Page 302 of 388 iter Mappings tes Swap all rds O Don t swap Read retention time Heptane w 116 Propane w 118 i Butane 120 n Butane 122 neoPentane i Pentane n Pentane Hexane Nitrogen Methane Carbon dioxn Ethane s Cancel GCAS Desktop Manual Guide rev 14 T CERE FILE HOME ts i Paste T INSERT PAGE LAYOU Import a configurat es Eg Calibri Export current mapp x Clipboard Ta 2 3 4 5 6 T 8 9 10 11 Se ee N a e J a Sheet1 The Ol Copy button does the opposite it copies register addresses from GCAS Desktop so you can paste onto Microsoft Excel spreadsheet 25 1 4 Mole Composition Streams GCAS Desktop supports multiple streams of mole composition data provided that each stream has its own unique set of register addresses and there are no address collisions between streams Note You need the GCAS feature Live Data Analysis to be included in your licence in order to capture mole composition data Page 303 of 388 GCAS Desktop Manual Guide rev 14 Live data analysis Registered mole composition streams St
129. 43 g Test Mole fraction Refresh To Clear MLC cache 15 June 2015 14 30 alr Collapse all 1 Remove Remove all Average Methane comparison Device Stream 43 5 45 0 14Jun 14Jun 14Jun 15Jun 15Jumn 15Jun 15Jun 15Jun 15 00 12 00 21200 00 00 03 00 06 00 03 00 12 00 Page 209 of 388 GCAS Desktop Manual Guide rev 14 Drag to a Drag to Zoom i Select Toggle button to switch between zoom or selection mode Zoom mode lets you zoom to a specific area of the chart Drag a rectangle over the area you want to zoom in Pan around the chart using the provided scroll bars Drag another rectangle to zoom in further To zoom out click the circled minus button on both scroll bars Press on your keyboard or right click the chart and select Zoom All Out to undo all zoom in operations 08 Nav 09 Nav 09 Nav 09 Nav 09 Mav 10 Mav 10 Mav 12 00 00 00 06 00 12 00 18 00 00 00 06 00 1 8042 2 5 ea meas aaa a A T 1 8037 ra ix 1 8032 aca vs A 1 8027 1 8022 mE 0230 0300 0350 0400 0450 05 00 0530 0800 0630 O70 Selection mode enables you to create selection area on the chart then you can manipulate the records contained inside the selection rectangle using available context menu Chapter 17 3 8 explains the function of each menu To clear selection area right click the chart and select Clear Selection Area Page 210 of 388 Choose a gas and date range Gas to compare 14 Jun 14 Jun 15 00 18 00
130. 480 000 Mean 2 std dev 6 941 495 Mean 2 std dev 6 667 575 6 240 000 Maximum and minimum are not limited to the first 4 records i 6 839 871 6 000 000 ini 6 701 822 07 Nov 14 08 Nov 14 08 Nov 14 09 Nov 14 09 Nov 14 10 Nov 14 12 PM 12 AM 12 PM 12 AM 12 PM 12 AM Between 8 November 2014 13 12 and 10 November 2014 06 08 Mean and standard deviation is calculated from the first 25 records Mean 6 730 533 10 5 Zoom Mode and Selection Mode This switch controls whether the chart is in zoom mode or selection mode Zoom mode lets you zoom in to a particular area of the chart in case there are too many data points cramped on small area Selection mode allows you to drag a rectangle to select a pack of data points and manipulate them using the available context menus Options Plot from 01 Sep 2011 00 00 EF to 05 Nov 2011 00 00 E Display mean and 2 std deviations Saon UE LEZA Calculate x and o from 25 records on each footprint onwards All records on each footprint onwards O What being displayed In zoom mode drag a rectangle on the region you would like to zoom Page 130 of 388 9 400 000 9 350 000 3 300 000 3 250 000 3 200 000 3 150 000 3 100 000 GCAS Desktop Manual Guide rev 14 Methane RF Trend 1 1 Nov 18 Nov 25Nov 02 Dec 09 Dec A Dec 23 Dec 30 Dec O06 Jan 13 Jan 20 Jan 2012 2012 2012 2012 2012 22 2012 2012 2013 2013 2013 Click to zoom out d 281 335 3 201 352 3 241 33
131. 599668 0 788712325 0 78867331 23 25 May 2015 06 00 40 90200925 40 90022117 18 58874623 18 58793821 50 99760139 50 99648633 0 643264797 0 643236685 0 788262962 0 78822844 Sheet1 1 20 11 Insert Comment To view or write comments open the Comments tab Chat Comments User ID admin Comment There were 6 bad mole composition records between 12 9 2015 10 00 12 00 Those records caused bad CV trend set them as inactive at 16 9 2015 14 26 Date of topic 16 September 2015 14 27 12 September 2015 Post a new comment Submit El Date of topic 16 September 2015 Write your comment and set the appropriate date of topic then click Submit Your comment will have a yellow background to distinguish it from comments by other users Date of topic is an additional information of which mole composition record you are writing your comment for thus other users know the correct data point to refer to Page 244 of 388 GCAS Desktop Manual Guide rev 14 Make sure that the comment is correct e g free from spelling errors because once submitted you would not be able to edit nor remove your comment To refresh comments click the same Refresh button If you do not see the text box to write your comment i e you only see the comment grid your GCAS user account doesn t have the action permission to write comment in ISO 6976 trend Contact your GCAS administrator Page 245 of 388 GCAS Desktop Manual
132. 6 trends based on multilevel calibrated streams are not correct Once the MLC cache is emptied refresh the chart The chart legend lists the device tag name and the stream numbers Multilevel calibrated streams are indicated with asterisk after stream number similar to the green line in this screenshot example Page 250 of 388 GCAS Desktop Manual Guide rev 14 150 6976 Trend Comparison Loot Amro rec ond aor ek pee ae Le ade Pa d add PA ISO 6976 output to compare a ISO 10723 sample Calorific value Bebe Test Bees Test From T Test6 oO 27 Jun 2015 lr 27 Jun 2015 Er Test Base pressure Combustion metering temperature S Collapse all Add gt lt Remove Remove all 62 6 CV comparison MJ m Device Stream 62 444 j 62 2 4 A A A Oo AA N MA 61 8 61 6 1000 1030 11 00 1130 1200 1230 13300 1350 1400 1430 1500 1530 21 3 Comparison Chart The chart graphs ISO 6976 output values based on mole composition records over time This chart has maximum capacity of 15 comparison entries The legend at your right hand side tells the devices and their stream numbers Multilevel calibrated streams ISO 10723 are indicated with asterisk after their stream numbers 62 6 CV comparison MJ m Device Stream eta as a eae ee Testi 1 TestT 1 62 2 62 0 61 8 61 6 1000 1030 11 00 1130 1200 1250 1300 1330 1400 1450 1500 15 50 By default GCAS Desktop draws the chart using thin
133. 6 06 13 02 06 7310666 p 310873 Pending Calibration data w 2014 06 06 13 03 21 5133480 8310873 10166463 TEE o T Commit A Clear grid Untick records to ignore them see green rectangle on the screenshot above Ignored records will not be written to database or CSV files For calibration parameters you can change its flag in the Flag as column whether to mark a record as a footprint or a regular calibration data See orange rectangle on the screenshot above Page 316 of 388 GCAS Desktop Manual Guide rev 14 To commit write the data into database or CSV files click either T Commit button or Save to CSVs button Otherwise Clear grid button removes all committed pending ignored and failed rows from display Alternatively click the P Start button again to resume capturing data The Status column may display any of the following e No text blank The record is ignored and will not be committed to database nor CSV files e Pending black The record is awaiting commit or save operation e Committed green The record has been successfully written to database or CSV files Click Clear grid button to clear all committed rows from both grid views e Failed red The record could not be written to database or CSV files Usually the l6 Se Error log button appears on the bottom left corner of the form and you click that button to see why the record failed to commit Otherwise op
134. 8 Wet TREUR Onay C oer eS FO ee ER RE aloe heitac te caiced cite clas 158 122 Vew Previous CoeficieNt Set Succus a EEEE EEEE EA 160 o SAECO Ono S E EEE E TE E ET E 161 12 4 Create New Coefficient Set uc ccecssesssssssssessssessssessssesssseesssssssecsssssssssssssssessssessssssssessssessesessseesssesseeeess 163 45 gt CANJERE CO Stal eee Sone ORO RE er NC wen RnC On CUTIE NC enone eenC tO Oe vi ICuRIOn NEST eRe OnICNIN Or OPTIC MRI NCRT Or Neer nr nna 164 13 Uncertainty Ten sorosiane area E a E a O EERE E RA E 166 tt Toe UnNcerainy Trend FO cscs tte as Tene T A O EET bed aes ee tee ered vecbtet ate 166 132 Uncertainty Trend Parat neers enorenunerone nn marreteepracssenetee 167 Teli Uncerndnmies ONNA E e a a Aianiea tin ten einen ctY 167 B22 Calbrator c a UH 2 Eeee n E G 168 TA FOOMPINUREIE ENCE opona a E T A T E OT EE E ENEE 169 13 2 4 Uncertainty Coefficients and Mole Percentage Range ccesssssesssessseceesesessesesseeesseeesseeesseees 171 lazo SOG 7G Parametr e E E NN 173 T260 DIFC CUON sceccssaecstseansctecsacesaecatonstt ead ecekesteslddsd reed E a a endian ceiumietcean 174 Ier PROCR ee aa tanner ae Ve res tnvner ee Va TSE oe a Toes T A 175 W226 INIISCENANCOUS isis ae ie eae st ee tees eect 176 33 Uncenamnty Trond CRo erence cece eE O E ERE RE NE RO 176 131 Lompanng Previous Cha esrerenenore niine ne E AEON 178 TaZ Zoom and SOl eedsienccicciaanananavanauamauanauanatauatenananasquanaucnauanancnase 179 Io Save On Copy ihe CN
135. 8 6054 48 9606 6 14 Jun 2015 14 54 00 48 7709 48 6211 48 9291 7 14 Jun 2015 14 56 00 48 7643 48 6165 48 8720 8 14 Jun 2015 14 59 00 48 8079 48 6575 48 8427 9 14 Jun 2015 15 01 00 48 8072 48 6590 48 8510 10 14 Jun 2015 15 04 00 48 7100 48 5634 48 8380 11 14 Jun 2015 15 06 00 48 7710 48 6218 48 7936 12 14 Jun 2015 15 09 00 48 7536 48 6043 48 7683 13 14 Jun 2015 15 11 00 48 6299 48 4830 48 9061 14 14 Jun 2015 15 14 00 48 8019 48 6531 48 8246 15 14 Jun 2015 15 16 00 48 8364 48 6871 48 8321 16 14 Jun 2015 15 18 00 48 9071 ey 14 Jun 2015 15 19 00 48 7877 48 6388 18 14 Jun 2015 15 21 00 48 8377 48 6871 48 8422 19 14 Jun 2015 15 23 00 48 7906 20 14 Jun 2015 15 24 00 48 6955 48 5485 X Sheet1 4 oad ae m 100 Every device or stream in comparison list has its own column and the rows are timestamps If there are two or more data points from different devices or streams sharing the exact same timestamp they are merged into one row in Excel worksheet 17 3 6 Comparison of Averages When you click Go or Refresh GCAS Desktop renders the chart and at the same time computes the average of each line These average values are presented on a secondary column chart Click Show average chart button having icon x to bring the average chart visible Page 212 of 388 GCAS Desktop Manual Guide rev 14 Mole Composition Comparison L AWE 4 ors sore Tam Mi i e a ee ee d Gas to compare di 50 10723 sample Show Devicetag Str
136. 8 May 2014 2014 2014 2014 2014 2014 2014 Methane RF w CO RF s Propane RF n Butane RF a Pentane RF Hexane RF NitragenRF Ethane RF v ji Butane RF Neopentane RF n Pentane RF Heptane RF Alternative colour scheme colourblind assistance turned on Similar colours are distinguished by dash or dotted style Page 135 of 388 GCAS Desktop Manual Guide rev 14 10 9 Selection Mode Menus These menus are available if Data Analysis chart is in selection mode and there is a selection rectangle on the chart Data Analysis Test6 eae Device name Test6 D Options Plot from 14 Jul 2015 00 00 ly to 27 Jul 2015 14 41 Er Select parameter Select chart type Save Chart as Picture C RE MC MIC trend stream 1 w Copy Chart Image RT OR C Include spot samples Select component mf Methane O Den ne a Frame This Selection certificate L Nitrogen Remove Frames C Carbon dioxide ISO 10723 trend Drag arectangleto _ Zoom In Here Generate Summary Here F Ethane Se Set These Records as Inactive Ap F 3 Mark These Records as Single Point Select all soiin l4 Mark These Records as MLC Chart Comments Send to ISO 6976 Calculator Averaged Send to 0 6976 Trend Send to Correlation Calculator Selection Averaged Send to Correlation Calculator All Gases Averaged Send to Mole Composition Comparison Zoom All Qut i M Y i AM n I i N Nan s
137. 80 Output Value Compressibility Zmix 0 9951697871 Calorific value 49 273141115 Neopentane 0 i Pentane 0 14047 n Pentane 0 12031 Molar mass composition 23 330238136 Wobbe index 54 78126488 Relative density 0 80901465 Standard density 1 045927402 Hexane 0 02198 Heptane 0 00202 y Paste Reset Use a mole composition record of Page 119 of 388 GCAS Desktop Manual Guide rev 14 10 Data Analysis Data Analysis is a tool to see trend of GC parameters over time in history Note This module requires GCAS feature Data Analysis to be included in your GCAS licence Data Analysis works for one device as it displays trends of various data for one device The complement of Data Analysis is called Data Comparison which for the time being is only implemented as Mole Composition Comparison Working at the opposite of Data Analysis Mole Composition Comparison displays mole composition trends of one data gas for various devices 10 1 The Data Analysis Form Select the desired GC device on the device panel then go to the View menu gt Data Analysis The form consists of three sections parameters chart and comments fee Data Analysis CaseStudy1 Se Device name CaseStudy1 re Plot from 01 Sep 2011 00 00 vy to 05 Nov 2011 00 00 fv Select parameter Select chart type i T a are i i B _ Display mean and 2 std deviations oo RF MC RF trend ORT O R RF deviation trend S 25 2 P
138. 88 GCAS Desktop Manual Guide rev 14 Date of test Description 02 October 2014 SEE Page of1 gt pi Filter Options List all coefficient sets Entries per page C List coefficient sets between 26 Jan 2015 and Sort Newest to oldest 30 Jul 2015 C Oldest to newest You can always return to the latest coefficient set through E gt Load latest set button 22 4 2 Edit Mode In order to edit the coefficients or the description you need to put MLC Coefficients form in edit mode Open the Action menu and select Edit Mode You know the form is on edit mode when you see 7 pencil icon some labels are coloured orange and there is a Save button at the top region of the form Edit Mode New Coefficient Set led Save Changes Set Status Page 265 of 388 GCAS Desktop Manual Guide rev 14 iar Edit mode MLC Coefficients Test6 fy Browse another set DEVICE NAME Test6 g Edit mode Component Nitrogen Carbon dioxide Ethane Propane i Butane n Butane Neopentane i Pentane n Pentane ES Load latest set STATUS Active a 118 39213 0 112799 0 045907 115 84367 0 106963 0 70313 0 120025 0 120025 0 002252 0 009661 0 003119 b 0 00055583 4 1705E 05 4 5226E 05 0 00096907 2 862E 05 3 9947E 05 2 6352E 05 2 6352E 05 2 0357E 05 1 7 788E 05 2 313E 05 E Save g DATE OF TEST 02 October 2014 Copy c 6 69E 10 2 895E 10 0 2 9345E 09 0 1 2156E 10 1 394E
139. 9 a b C d Troubleshooting Q see an error message This file is not a valid configuration file A There is a problem within the XML file Open File explorer Windows explorer navigate to installation directory Mappings DeviceSpecific Default installation directory is C GCAS Find the file of your device tag name xml then delete the file This will reset the configuration of your device to follow template Q see an error message Erroneous RF RT entries similar to this screenshot Erroneous RT entries GCAS expects this configuration file to have 11 RT V entries however 10 entries were found A Again there is a problem within the XML file Open File explorer navigate to installation directory Mappings DeviceSpecific Find the file of your device tag name xml then delete the file This will reset the configuration of your device to follow template Q see an error message Device type not supported A GCAS Desktop cannot find the template file Open File explorer navigate to installation directory Mappings Template If the template file for your device type does not exist either the device type is not yet supported by current version of GCAS Desktop or otherwise you might need to reinstall GCAS Desktop Q When import a configuration XML file it says that the file belongs to other device A The export configuration command link is not intended to copy settings among devices bec
140. 9 ae Fld I Fh 9 201 335 Methane RF Tfend 3 Nov 12 23 Nov 12 24 Nov 12 24 Nov 12 25 Nov 12 25 Nov 12 26 Nov 12 26 Nov 12 27 Nov 12 27 Nov 12 12 AM 12 PM 12 AM 12 PM 12 AM 12 PM 12 AM 12 PM 12 AM 12 PM Use the scroll bars to pan the zoomed chart To zoom in further drag another rectangle on the area you would like to enlarge more Click on the circled minus button on both scroll bars to zoom out one step To zoom all out simply press the button on your keyboard Otherwise right click on the chart and select Zoom All Out submenu In selection mode drag a rectangle to select an area on the chart Right click the selection to open context menus and you see several menus available in selection mode Chapter 10 9 will explain each function of these menus To cancel selection right click the chart and choose Clear Selection Area Methane RF Trend 7 200 000 Wean 2 std dev 6 960 000 2 std dev Ay 8 8 pes Methane RF 6 720 000 i 1 e a aiii 6 480 000 LA SEREN pon p DTETODIRTDT N ummm re eam se ee Pee ea ea ET 6 240 000 6 000 000 OF Nov 14 08 Nov 14 08 Nov 14 09 Nov 14 09 Nov 14 10 Nov 14 12 PM 12 AM 12 PM 12 AM 12 PM 12 AM Page 131 of 388 GCAS Desktop Manual Guide rev 14 10 6 Change Axes Scale When zoom is not enough you can enforce a custom range for both X axis and Y axis of the chart To do this right click on the chart and select either Set X axis Scale or Set Y ax
141. 9 Insert Comment Users can comment on a record It is useful to write comments when an action is being done onto GC device or in case of unexpected behaviour has occurred You are also taken to the comment section automatically whenever record property is changed either record flag or record status It is a good practice to provide explanation on why the record property was changed P ae i poss E gt Change calibration data 3 Load latest calibration data by ng i S l C Draw thinner lines Show footprint DEVICE NAMIE STATUS CALIBRATION DATA TIMESTAMP FOOTPRINT TIMESTAMP Test4 Inactive 12 December 2013 06 15 01 November 2013 07 24 Charts Tables Comments Refresh comment This calibration data was marked as inactive at 13 February 2014 13 29 Made this inactive to prevent it being included in Data Analysis form 12 December 2013 09 13 38 Response factor of methane and CO2 are too low Investigation needs to be conducted Post a new comment To insert comment open the Comments tab or go to Action menu gt Add Comment 2 Write your comment on the text box at the lower section of the form then click on Submit button Page 82 of 388 GCAS Desktop Manual Guide rev 14 3 Make sure the comment is correct e g free from spelling errors because once inserted into database you will not be able to remove the comment This is a part of the requirement for audit trail If you do not see th
142. And if GCAS can return online Notify me D Automatically switch back to central database Cancel When you switch to offline mode and exit GCAS Desktop the login form will stay in offline mode upon next time you launch GCAS Desktop Warning Only users who have set up their temporary database can log in during offline mode To override the initial mode run GCAS Desktop with one of the following parameters e fonline Forces online mode e offline Forces offline mode k Type the name of a program folder document or Internet a resource and Windows will open it for you C GCAS GCASMain exe online Cancel 29 12 Maintenance of Temporary Database To perform maintenance you need to go online Then open the File menu gt Work Offline gt Maintain Temporary Database It contains all submenus to perform database maintenance Page 379 of 388 GCAS Desktop Manual Guide rev 14 Change Database Reconnect Database Export Data Ctrl E Flush and Backup Go Offline Notification Log syne then Go Offline Minimise to System Tray Maintain Temporary Database Information Exit Delete Temporary Database Compact Sync Now Verify Work Offline Preferences Repair Backup Restore Information Displays the size of your temporary database file how much data stored in it i e the timestamp of the earliest data available and also the date and time of last sync operation Compact Tries to shrink th
143. Composition Comparison form will be disabled Export to Excel button on MLC offline converter tools will be unavailable and pretty much everything that exports directly to Microsoft Excel Use this switch if you see COM exception continuously every time you use features related to Microsoft Excel Activates the diagnostic mode Causes GCAS Desktop to display a confirmation dialog whenever you import a footprint or calibration data from a text file Clicking Cancel on the confirmation dialog will abort the import process Page 385 of 388 modbusbase X disablecalibrationcache drawincompleteRFRT disabledoublebuffering drawemptyUT disableUTcache GCAS Desktop Manual Guide rev 14 Translates the base register address from the default 0 zero to any number you have specified There is a colon between modbusbase and the number but there must not be any Spaces between modbusbase the colon and the number For example modbusbase 40000 specifies base address 40000 instead of 0 This switch is only used for certain GC devices and on specific circumstances By default whenever you open GC Connect form the latest RF and RT data for that device is cached If the first poll returns the exact same RF and RT data this incoming record is not regarded as a new data thus GCAS Desktop avoids duplicated RF RT data This switch disables the caching behaviour If you run GCAS Desktop with disablecalibrationcach
144. Constraints n Butane neoPentane i Pentane Nitrogen 1 6472 ME renane B En B n Pentane B Ethane CO 2 1789 Ls _ Remove mode Colourblind assist Show legend _ Show unnormalised _ High precision Show difference You can change MLC flag bit if necessary however do this with caution Because single point compositions and MLC compositions are similar in values unlike single point RF versus MLC RF which are completely different it is easy to mistake which composition is single point or MLC Page 107 of 388 GCAS Desktop Manual Guide rev 14 8 10 2 Mark As versus Convert To Open Action menu select ISO 10723 then select Mark As or Convert To and GCAS Desktop shows this dialogue box Convert changes both the flag bit and the data Obal Convert to single point MC y Convert to multilevel calibrated MC Current flag bit is highlighted in yellow to clarify what the bit value is Next decide whether you need to mark the flag bit or convert the whole record Mark As changes the flag bit only The original numbers of all mole values are untouched By contrast Convert To changes the flag bit and converts all mole values thus changing the actual numbers stored in database Permanently Unlike Mark As the Convert To operation requires action permission MLC permanent conversion If your GCAS administrator doesn t give you this permission GCAS Desktop displays a message saying that yo
145. Desktop Manual Guide rev 14 If you cannot find the button instant trial may not be available for you because probably you already used it before Instant trial is only offered once per computer For example if a user tries to uninstall GCAS Desktop after his trial period is over and then reinstalls the software again he will not see the Instant 4 day trial button a second time 1 4 6 Automatic Licence Update Licence update is an update for your licence For example a customer has subscription plan and they just extended their subscription for another month the expiry date on their licence is then updated to the latest subscription end date Another example a customer decided to add more features to their licence Their licence is updated to reflect this change By default GCAS checks for licence update in GCAS Activation Server once during launch and once every 24 hours Automatic licence update works only if your computer has a working internet connection 1 If there is any update for the licence in GCAS Activation Server a window similar to this one shall appear The text on this notification window may vary depending on what kind of update is available for you e g extension of expiry date feature update or limit upgrade on number of GC Your GCAS licence is being extended to 01 December 2016 However GCAS cannot install this licence automatically because Windows requires an administrator consent Click Install to pr
146. E Change record DEVICE NAME STATUS TIMESTAMP Test2 Active 28 March 2014 15 58 00 Chart and Table Comments d Refresh comment mm User ID Date posted Comment gt 21 April 2014 10 36 01 Unnormalised total is over 105 Investigation is on its comment l To insert comment open the Comments tab or go to Action menu gt Add Comment Write your comment on the text box at the lower section of the form then click Submit 3 Make sure the comment is correct e g free from spelling errors because once inserted into database you will not be able to remove the comment If you do not see the textbox and the Submit button i e the comment grid fills up the entire form your user account may not have action permission to write comments or your user role is Read only Contact your GCAS administrator 8 8 Automatic or Fixed Scale Early versions of GCAS works only with percentage scale but now it works with any scale up to parts per billion PPB GCAS automatically determines which scale to use according to the unnormalised total value If the unnormalised total is around 100 then it is percentage If it is around 1000 probably it is permillage o Page 103 of 388 GCAS Desktop Manual Guide rev 14 The automatic scale may not work as you expect For example a problem on the GC or the pipeline caused the unnormalis
147. E NAME STATUS Fa DATE OF TEST Test Active 03 February 2015 H Otherwise to cancel editing and discard all of your changes open Action menu and select Edit Mode again to remove its tick mark This will exit edit mode and reload the coefficient set from the database 12 4 Create New Coefficient Set Creating a new set instead of editing an existing set over and over again provides some advantages such as You have a historical record of coefficient sets When the annual multilevel calibration is conducted it generates a new set and this should be entered as a new set too You can test several sets with minor differences in the Uncertainty Calculator form Make sure to write the correct description for the uncertainty set in order to avoid confusion when selecting the coefficient record in Uncertainty Calculator From an open Uncertainty Coefficients form open the Action menu and select New Coefficient Set This menu creates a blank coefficient set all zeroes with the timestamp set to current computer time Edit Mode New Coefficient Set Save Changes Set Status Page 163 of 388 GCAS Desktop Manual Guide rev 14 Edit mode Uncertainty Coefficients Test3 Browse another set bet Load latest set lal Save DEVICE NAME STATUS 7 DATE OF TEST Test3 Active 21 October 2014 Repeatability Coefficients Response Concentration Coefficients Z Edit mode Component Methane Nitrogen Carbon dioxide Ethane Prop
148. E O 233 ZO WSO OGL PROMS CS ea EE E EE E EEEE R 233 20 3 Plot Range and ISO 10723 Conversion sssesssessssesssesssessseesssrossessseesseessseossrossresseesssrossrosseessessssrossressresss 234 20 4 Mean and Standard Deviations sssssssssssssessesssesssssssssesssessssescsessseesssessesesessesssessesssessesssessesssesseassessees 236 OA feo Wim 28 21 RGR WV INE a aaa i Us EN any oe era nn Rn a USNR OSU aInn runont ean nn Una E wenn 237 200 Compaling Previous Chatticinst ae ae eh es ee ae ee ae eels 238 20 7 Zoom Mode and Selection VM OGG iii rccrece nem aneecencmacm rans earstoncieacnvnivean staencarceuneaeedd 239 20 9 SelectiOn Mode Men enceensainsiceicetelemelaiesietiaerattenidaatieaMidseteaeidaataiavich mee 241 209 Oter Vis tial Cues arnan E E E 242 20 10 Export Values to Microsoft Excel cea cates ERRE EREEREER RRN 243 LOEN MIS SUT C OMMON ae O 244 21 1S506976 Tre nd Comparisons ae a E EEE EEE 246 21 1 The ISO 6976 Trend Comparison FOM c cccccesesessssesssessssesesssssssscsessssssssesesescssssesesesessesesesesessesesesesessseseeeees 246 21 2 Parameters and Device LIST i iccsciessuczssssnccssusninccsvessserssdsvaesvessanecuevannessvaspineavotanaesbsarenedsevennenteagpacseedapaectnaaabesedens 247 21 2 1 Plot Range and ISO 6976 Properties 0 sesssesssssssssesssessssssessesssssssssseesesssssessseessseseessseseesesesseseeas 247 Diese Devicesana Comparison Lis tansa a ce eet 248 ERZ S GPAD eea E ET E E EET 250 PWS Compans CNIR
149. EY AY le 2 These options control which data source to feed into ISO 6976 calculator inside ISO 6976 Trend Set the date and time range as well as the stream number and finally click Refresh to start graphing It may take a while to plot the complete chart GCAS Desktop provides Pause button to temporarily halt the operation or press F7 and oO Stop button or press to abort the calculation Page 234 of 388 GCAS Desktop Manual Guide rev 14 iso 150 6976 Trend Testi i Data and 1 Device name Testo source and options Plot from 15 Jun 2015 09 44 to 116 Jun 2015 09 41 ISO 6976 outputs ISO 6976 erties prope Records to plot 567 A Calorific value Base pressure oe _ Molecular weight 1 0 atm ISO 10723 conversion Convert to single point Wahha inday ey i si a Combustion metering temperature Standard density 1Cr 15 C View summary Drag a rectangle to Zoom Select l X i Calculating ISO 6976 Pause F7 Stop Esc SS z Chart Comments CV Trend ISO 6976 Trend form calculation tn progress Dots disappear after 100 data points GCAS Desktop determines which stream numbers available based on the existing mole composition records and mole composition streams configuration in Modbus register mappings Nevertheless if the desired stream number is not listed on this dropdown just type the number manually and hit Refresh If you have SO 10723 f
150. Edit Mode to remove its tick mark The form will revert to the last record viewed 22 4 4 Change Record Status Like other types of record in GCAS database MLC coefficient set has a status bit indicating whether the record is active or inactive Inactive coefficient sets are not used for MLC conversions thus GCAS Desktop will look further backward to find the previous active coefficient set To change status open the Action menu and select Set Status This menu brings the Set Status dialogue where you can flip the status bit from active to inactive or vice versa Page 268 of 388 GCAS Desktop Manual Guide rev 14 Set Status Edit Mode New Coefficient Set Active OK Save Changes O Inactive Cancel Set Status Click OK and GCAS Desktop will update the new status which then instructs the MLC Coefficients form to reload the set with the new status 22 5 Overriding MLC Constraints Chapter 22 2 already explained what MLC constraints are and chapter 22 3 explained four levels of MLC constraints This chapter explains how to actually override MLC constraints if the global or predefined constraints produce nonsensical RF or mole composition values 22 5 1 Overriding Constraints for Footprint Calibration Data From an open Footprint form or Calibration Data open the Action menu select ISO 10723 then select Change MLC Constraints The MLC Conversion Constraints RF dialogue ap
151. Excel worksheet formats the worksheet and writes data to it The process is much slower compared to other exporter module so it is suitable for small number of records Choose Copy to Excel to begin Note You need the GCAS feature Export to Microsoft Office to be included in your GCAS licence in order to use this feature Moreover this exporter also requires Microsoft Excel 2010 2013 2016 or later to be installed on your computer Running this export module without Excel installed will raise an error Page 348 of 388 GCAS Desktop Manual Guide rev 14 Se Export data from GCAS database Choose an export type Export to CSV f Copy Export to MS Export to SOL Access Compact Export data to a new Microsoft Excel worksheet Surts best for small number of records Requires Microsoft Excel 2013 2010 or 2007 be installed Tick all GC devices you would like to have their data exported j Platform A Al A2 j Platform B B1 Collapse all B2 a Platform C c1 C2 _ Renamed workspace Page 349 of 388 GCAS Desktop Manual Guide rev 14 Choose the data kind and a date range to export If you tick Also include records marked as inactive inactive footprints calibration data mole composition data calibration certificates uncertainty coefficients MLC coefficients and lag time data including comments for them if selected within the defined date range will also be included in the export e erg Expo
152. GCAS Desktop Manual Guide Copyright i Vigilant Technologies Ltd The software GCAS Desktop GCAS Gas Chromatography Analysis Software GCAS web version http i vigilant com and this manual guide are protected by intellectual property laws Unauthorised copying modification or distribution of the software may lead to fine or prosecution according to the applicable law i Vigilant Technologies Limited is registered in Scotland United Kingdom with company registration number SC426362 Registered office is Unit 26 Murcar Commercial Park Denmore Road Bridge of Don Aberdeen AB23 8JW Revision 14 Last updated 12 October 2015 GCAS Desktop Manual Guide rev 14 Page 2 of 388 Table of Contents Title Page GCAS Desktop Manual Guide Table of Contents Revision Log 1 Welcome 1 1 NIV SSG oleae alccat ss cheetah cities treater les eeaeaterelaadtess 1 2 System REQUIFEMENS ccecsssesesssecsesssesssssseessssseesssesesssesseseees 1 3 SU pported GG Brands acces tesco ceeuctectcsrcact see dastssectechateecte stuns 1 4 GCAS Licence and Activation oe eceetesesseseseeeseseesestseeseeteseseens 1 4 1 Types of LCC INC Ss eetesk seeds saccsssspdcceiepneisstereeteniacentssieceetanaciss 1 4 2 ROW Many PGS cent o ene ae ie 1 4 3 ONMMMEACUV ATION scart Sie tS ereiee i sseierretitre es 1 4 4 OTMMMO ACV ALON eceeterctstectccoztiecvenasseeutnsesateenienc icine aalazcnet2 1 4 5 Stant Tiaka a S 1 4 6 Automatic Licence Update uu
153. GCAS Desktop reserves them for urgent messages only Click anywhere on the overlay to dismiss the Page 54 of 388 GCAS Desktop Manual Guide rev 14 notification File Profile Subscriptions View Comms _ Tools Window c s 370XA DEMO i Vigilant New server Microsoft a J CASE STUDY byt CaseStudy1 BE CaseStudy2 WE Casestudy3 WE CaseStudy4 WE CaseStudys WN anole Problem WE DEMO WE 370XA DEMO bate 8425R l s HFE TEST Connection to database server was disconnected Please check your network connection BPE UK21C1813 Do not attempt to continue working on any existing open forms as they will raise errors AE 370XA DEMO1 l Bt DEMO1 Did you know GCAS can switch to work offline mode You need to set up a temporary database beforehand BS DEMo2 Later when you are online go to menu File gt Work Offline gt Initialise Temporary Database to create one byt ES DEMO3 byt ES DEMo4 lt Recently used devices AFE 370xA DEMO Search device lb Disconnected lt gt Network problem In case you missed a notification check the Notification Log from the File menu Notification Log window displays the last 10 000 notifications Click Replay notification to replay it Replayed panel notifications still show decision buttons but this time these buttons serve no function other than to dismiss the notification Timestamp 24 Jul 2015 11 23 29 Status bar Ready 24 Jul 2015 11 23 28 Stat
154. GCAS database GCAS requires users to enter their valid credential before presenting the main interface Each user has their own user type and role which control what kinds of data in the database are accessible to the user and what permissions the user has over the data When a GCAS user is assigned into a group this implies the user is authorised to access read and write data to a portion of GCAS database which is allocated for this particular group A user may be assigned to multiple groups 3 1 User Types and Roles Concept User types and user roles constitute the access control list ACL If you use i Vigilant central database this ACL is shared between GCAS Web and GCAS Desktop User types control which menus are available to the user Default installation of GCAS would set up three user types Administrator super user and general user Administrator has access to all areas of GCAS modules and menus while general user has access to essential features only You can create custom user types and assign custom menu permissions to each of them if you are the GCAS administrator To do so read chapter 27 2 Define new user types and roles and 27 5 Menu permissions User roles control which actions are available to the user An action is a specific command available in some modules such as Footprint Calibration Data Mole Composition and Devices Those commands are accessible through the Action menu on the menu bar Default installati
155. Gridlines Which ones x Action Compare averages SELECT TWO E Bests stream 1 single point L i Test stream 1 MLC L f Test7 stream 1 single point Next GCAS Desktop builds a comparison and displays them on a text viewer window similar to this one below Compare Averages Comparison of averages from 27 June 2015 11 25 to 27 June 2015 13 33 Test6 stream Test6 stream 1 single pt Calorific value average 62 029712 62 8070395 Number of data 51 51 First row is the comparison First column is the first comparison entry which was selected on the previous dialogue box let s call it A Next column is the second comparison entry let s call it B Then the delta is A minus B and finally you get absolute difference in percentage relative to A Page 258 of 388 GCAS Desktop Manual Guide rev 14 Second row contains number of data N used to calculate the average The reason is ISO 6976 Trend Comparison form can compare ISO 6976 trends between devices and each GC device may not have the same number of data 21 3 7 Other Visual Cues By default GCAS Desktop draws the chart using a thin line The toggle button N Use thin lines is pressed by default If you prefer the usual thick lines click this button to raise it from its pressed state Click Show values or right click the chart and select Show Values to display the ISO 6976 values GCAS Desktop presents a warning if one or more devices have over 100 do
156. Guide rev 14 21 ISO 6976 Trend Comparison ISO 6976 Trend Comparison is a tool to compare ISO 6976 trends across devices It is a part of Data Comparison feature which stands in line after Mole Composition Comparison Do not confuse ISO 6976 trend comparison with ISO 6976 comparison The former is what we are going to talk in this chapter while the latter is a bonus feature of ISO 6976 Calculator Note This module requires two GCAS features to be included in GCAS licence SO 6976 Trend and Data Comparison 21 1 The SO 6976 Trend Comparison Form To open ISO 6976 Trend Comparison form go to the Tools menu gt ISO 6976 Trend Comparison tiso SQ 6976 Trend Comparison tle ped ar di 150 10723 sample Show Devicetag Stream MLC Calorific value HPE Test HPEH Test From oO Clear MLC cache 07 Oct 2015 Hr Base pressure Combustion metering temperature N Collapse all Remow Remove all Similar to Mole Composition Comparison form ISO 6976 Trend Comparison form has two resizable sections Parameters are at the top chart is at the bottom This form is designed with similar UI experience with Mole Composition Comparison therefore users can use it straight away without reading this chapter further Page 246 of 388 GCAS Desktop Manual Guide rev 14 21 2 Parameters and Device List The top section of the form has a linear flow Select what ISO 6976 output you need the comparison date range and ISO 6976 proper
157. I oe E et ie ete arte 180 WB Ae OME VIS A CUC onnenn E S 180 T30 COOUrDINO ASSIS IN C E enpi n a a T E 182 133 6 Uncertainty Trend Diagnostic wid ccetescncte tad vecatesnere eanan A A ER 182 TA sere COMMON onanan AR 183 14 Uncertainty Trend Comparison cccccssssssssssssssccccsscccccccssssssssssssssssccccccsccccsssssssssssssscsees 185 15 C mMeNtS isiin nin ainai iaa aaia aa aaa aaia aa aaa aaa aiaa aG 186 ist Foe Comnen FON meere enn a cendceraeette gt coanes sacuestenconeue anyones euessteasneaneaeree 186 15 2 Filter Comments by TYype sss sssosssesssesssesssessssesssesssessssessseossessseesseeosseessresseesserossrossresseesssrossrossresstesserossrosseesss 186 rox FETrEOMNMNEeN e DV DAO aa E EA E AEA 187 Page 7 of 388 GCAS Desktop Manual Guide rev 14 bA Seareh COMMEAIS eere sees eee i ee 187 Sid Delete COMMUNI S ernn enoar ETE NER EE EET OOR 187 TG DASMDOAN anene Geadccansdcdeeseietdecsustedcecs deececeusteteuseseececeuatedeeentacceccusteevsesescuceese 189 aK omy B 9 oars ea CNO a contre aeren Terme va TD Ca rv ATU TC URTR ST TUT R 192 tekt Heatnstat us tO DISP Voerenin E EEE EET ETE 192 Toe RIE eaa E EE I EEO NEE E E es ee ncteatd tes 195 16 1 3 Uncertainty Calculation Settings sesssssssssesssssssssssssssssessssssessssssessssssessesssessesssesscsssessessseesesssess 196 lt a Nm FY 0 bv en ne Oe Cm oR ERECT ENON OE TNT ONE OPI INCU OTS UT en EST RC On VETERE ST ae Ort Tne 197 lokon MEERI COUS ea a
158. J m Device Stream A E E 62 20 Testi 1 Test 1 62 00 Test 1 61 80 F VI 61 60 12 00 1 amp 15 12 30 1245 13 00 13 15 13 50 13 45 14 00 14 15 14 30 ISO 6976 trend comparison chart with colourblind assist turned on Colourblind assistance works better if you use N thick lines because thick lines have subtle shadow to aid the user distinguishing the yellow line and white background Page 260 of 388 GCAS Desktop Manual Guide rev 14 22 ISO 10723 ISO 10723 2012 is a standard method used to adjust values in non linear GC devices Support for ISO 10723 first came in GCAS Desktop version 1 6 0 0 We gradually added more features and modules and finally full support of ISO 10723 was completed in version 1 7 3 0 With ISO 10723 GCAS Desktop makes a differentiation between single point and multilevel calibrated MLC response factor and mole composition All subchapters in this chapter assume you have GCAS feature SO 70723 included in your licence 22 1 MLC Coefficients Concept Multilevel calibration coefficients abbreviated MLC coefficients are the coefficients of the analysis function as described in ISO 10723 standard Similar to uncertainty coefficents although not about the Same meaning MLC coefficients consist of four coefficients These four come from the equation y a bx cx dx where y is multilevel calibrated peak area x is single point peak area and a b c d are th
159. MS Should you have interest in setting up a local corporate GCAS database within your company network or using a local offline database for your company contact our support team to arrange a deployment for you Page 33 of 388 GCAS Desktop Manual Guide rev 14 2 3 Change Database Most users do not have to worry about changing database But if your data is stored in two or more databases tell GCAS Desktop which database it should connect to To switch database make sure that no forms open on your work area and you are not working offline Next go to File menu gt Change Database i Change Database el Reconnect Database gt re Export Data Ctri E Flush and Backup Work Offline Notification Log Minimise to System Tray Exit This menu will bring up the Change Database dialogue Choose which database you would like to use whether i Vigilant central database your own corporate database or an offline database file i Vigilant central database _ Corporate database C Local offline database i Vigilant Central Database The data i stored on Vigdant database server Select server Old server MySQL New server Microsoft SOL New server Microsoft SQL proxy Reset to default settings Page 34 of 388 GCAS Desktop Manual Guide rev 14 Enter the required parameters e g IP address or server host name DBMS username and DBMS password You can test whether the parameters are correct thr
160. Out Ctrl L Change Password Your current password Your new password Reenter the new password Unmask passwords be careful of someone behind you e 3 Type your current password once and your desired password twice Then click Save to commit the change 4 Use the new password for the next time you log in to GCAS Desktop 3 4 Forgot Your Password If you forgot your password and you use i Vigilant central database send a request for password reset quoting your GCAS username to support I vigilant com then we will reset your password If you use local corporate database or local offline database contact your GCAS administrator to reset your password To GCAS administrators follow chapter 27 1 Manage Users to reset a user s password Page 47 of 388 GCAS Desktop Manual Guide rev 14 3 5 Logging Out Go to the Profile menu gt Log Out or press Ctr1 L shortcut key to log out The next user can now log in Be informed that if GCAS Desktop is in offline mode only users who have set up their temporary databases can log in to GCAS 3 6 Automatic Logout on Inactivity To protect your data GCAS Desktop can trigger automatic logout if it has been idle for certain period of time The login form will look like this if you leave GCAS Desktop without any activity for some amount of time Ww New server Microsoft SQL Change database Password _ Remember me on this database untick on a shared computer You have
161. RT and MC and 100 records for R Page 126 of 388 GCAS Desktop Manual Guide rev 14 Options Plot from 06 Jul 2015 00 00 ly to 05 Aug 2015 15 41 lr Display mean and 2 std deviations FEAR ea 25 Drag arectangleto Zoom Select gt Be x 2 10 4 Mean and Standard Deviations On certain parameters GCAS Desktop can calculate the mean average and twice the standard deviations The table below describes which parameter has this capability Mean amp 2 std dev enabled Available options 1 x records from footprint 2 All records from footprint 3 What being displayed Y 1 x records from footprint 2 All records from footprint 3 What being displayed a es es 1 What being displayed GCAS Desktop can only calculate mean and standard deviations if only one component is selected Note Mean and standard deviations cannot be computed for two or more active components on the chart Important If you are working offline computed mean and standard deviations may not be accurate because it depends on how much data available on your temporary database GCAS Desktop displays offline warning icon to alert this potential source of inaccuracy Try to stay in online mode as much as possible while working with Data Analysis Page 127 of 388 GCAS Desktop Manual Guide rev 14 To show or hide the mean and twice standard deviations use the checkbox Display mean and 2 x standard devia
162. Returning Online GCAS Desktop can start an automatic database sync when you go online To enable this feature open the Work Offline Preferences dialogue by opening the File menu gt Work Offline gt Work Offline Preferences Work Offline Preferences Sync data in the temporary database fromthe last ff months Automatically switch to temporary database if network connection is lost Resume all modbus operations after a successful switchover Do a periodic check if GCAS can return online every 3 S minutes And if GCAS can return online Notify me D Automatically switch back to central database Remember current state offline online for next time GCAS is launched En Tick Automatically sync to central online database server when I go online to turn on this feature Next time you work offline and is about to switch into online mode GCAS Desktop synchronise the temporary database and the main database server as soon as it enters online mode 29 5 Automatic Switchover on Network Problem GCAS Desktop switches to your temporary database if the network connection between your computer and GCAS database server gets interrupted To enable this feature open Work Offline Preferences through the File menu gt Work Offline gt Work Offline Preferences Give a tick mark on Automatically switch to temporary database if network connection is lost Page 369 of 388 GCAS Desktop Manual Guide rev 14 Work Offline Preferences
163. S Desktop Manual Guide rev 14 22 6 2 MLC e Single Point MC Offline Converter This is an ISO 10723 converter tool for mole compositions First select a conversion direction whether from MLC to single point or single point to MLC 4 MLC Single Point MC Offline Converter 1 Which conversion do you need Direction MLC Single point Convert multilevel calibrated mole composition te single point mole composition gt Single point MLC Convert single point mole composition to multilevel calibrated mole composition Next enter the MLC coefficients This page has similar layout to MLC Coefficients form You can paste from Microsoft Excel or other spreadsheet processing software as long as the data has 4 columns and 15 rows for 15 gases click Paste to do so If the mole composition data to convert don t have gases such as octane nonane decane or neopentane leave the coefficients of those gases to all zeroes Page 281 of 388 GCAS Desktop Manual Guide rev 14 MLC Single Point MC Offline Converter ee f fm Enter the coefficients of MLC analysis function This converter tool supports up to C10 decane lf your GC does not have certain gases such as neopentane or octane or nonane leave the coefficients of those gases to all zeroes 2 3 y a bx cx dx multilevel calibrated peak area x single point peak area Coefficients a b d coefficients of analyse function b 0 Paste Reset
164. S Desktop Manual Guide rev 14 2k Derete Use creer ee tert ren rey ene poe nee Ten Cr ent atrer pre TE eT Nees eer even peer ne syns tere 332 27 2 Define New User Types and Rolle ou ccessssessssssssssssesssssssssssessssssssssssssessssessssessssessssessssessesessesessssesseseeseeess 333 Zila Manage GOUD Stasera a na E ccna seers 334 27 3 1 Create Edit Delete Groups ceesssessesesssssesscsesssesesscsesssesessssesesesesscsesesesessesesesesessesesesesesseseseaeeesees 334 27 3 2 Add Edit Delete Workspace within Groups uu ecescssesssesessssesssesesssesssesessesesesesessesesesesesseseseeeeeees 335 21A FASSIGUUSENS INL GlOUDS cerise a 337 ZI AM ASCII CW oi steiectes rset ese E TAEA EE AEA E R vet otic ta adawste test 337 DT OUP 1 OW a cca cesses cece E 338 Zao MENEREN SIC INS sce cies sees las sceensh cs tecs a A 341 ZRO PRETO OTS S FOUN aa ae eae eee 342 PR Gama lt 0 0 og iB J 1 p OP eee eee 343 AM EON COs soca ci epastteneney cities taces E sestdtanaseiatecaeciaeecssateest 344 DO ECORV TOMIO EXCO oseere nE Ea EE ENEA ENAREN OEREN 348 POO FEO I O MITOSO AC COS S arare seca E EA TEETE TI 352 28 4 Export to Microsoft SQL Server Compact Database wu ccccesessssesessssessssssesestssesessesesesseseeeeseseecesees 357 29 WOrk Ly Peer eer en SOR er ee ee nen ee eee ne eee eee 364 29 1 Set Up Temporary Database csssssssssesssessesssesssssssssssssssssssseesssesesssessesssessesssessesssessesssessesssessesseesees 364 29 1 1 Create
165. Selected 8 Tick None Top10 Bottom 10 Remember my selections on this computer Ticking this box causes GCAS not to display this dialogue on next launch Go to Subscription menu gt Choose Devices fo show this dialogue again Your selections are persistent for this database only OK To make your device selection persistent tick Remember my selections on this computer This causes GCAS to remember your selection for the next time GCAS is launched and thereafter The selection is valid for current GCAS database only If you change into different GCAS database Choose Devices dialogue may re appear Again you have the option to remember your selections for that database as well Subscriptions Choose Devices Manage Devices At some point you may change your mind Go to the Subscription menu gt Choose Devices to display this dialogue again Here you can change your selected devices to make visible or simply untick Remember my selections on this computer to cancel the persistence Unticking the check box causes GCAS Desktop to re display Choose Devices dialogue the next time GCAS is launched Please note this menu is not visible directly after making selection through Choose Devices dialogue It will be there the next time GCAS Desktop is launched so you need to spend one session with your current device selections first Page 53 of 388 GCAS Desktop Manual Guide rev 14 4 4 Notifications GCAS Desktop has four kinds of noti
166. T PAGE LAYOUT FORMULAS DATA REVIEW VIEW DEVELOPER OFFI composition Le i Methane E d Calibri ln A A R amp Fe Genea F E Nitrogen Ea s f 1 Paste ad eee Fe QoS oe x ye e0 0 Conditional Form Carbon dioxide i F Os z5 27A Jaaa a a i Formatting Tab Ethane Clipboard Font F Alignment F Number pi Styles Propane Al X Hexane i Butane Se n Butane h A B E D E F G H ooo o O O a a oe ee eg Ee 1 eas ee a Neopentane 1 Hexane ate Hexane sataa IC6 SLN i Pentane 2 Propane 3 01351 Propane 3 01351 IC3 3 01351 E EE 3 li Butane 0 8936 lisobutane 0 8936 lic4 0 89361 4 n Butane 0 8909 Butane 0 8909 INCA 0 8909 Hexane i i TEIS 5 ji Pentane 0 2381 ilsopentane 0 2381 Le 0 2381 6 n Pentane 0 29751 iPentane 0 29751 IC5 0 29751 7 Nitrogen 7 44691 INitrogen 7 44691 IN2 7 44691 eee 8 Methane 68 9481 Methane 68 9481 ic1 68 9481 Decane 9 Carbon dioxide 3 0043 iCarbon dioxide 3 0043 iC02 3 0043 j I I 10 ethane 14 8769 ethane _________14 87651 C2 14 8769 Paste Reset 11 Use a mole composition record of 12 Demol 13 14 Page 228 of 388 GCAS Desktop Manual Guide rev 14 19 2 3 Load a Mole Composition Record To use a mole composition record we have two methods Both require Live Data Analysis feature in your GCAS licence First method as already described in chapter 8 9 Open a Mole Composition form go to the Action menu and select Send to ISO 6976 Calculator Second method is described
167. TOES Selection Mode Men s scce5 coecnstit is cxiaa dere tba ctdhcte cued estlOha eee R ec cacnl Vie tl tece utes 136 1O T0 Other Visual CUES e E A tad E E needestareahceadl 138 WOIE ANSE COMMEN oanp a a a a a a i saeeee 140 EL Uncertainty CalCulati On ieiccctctccestececec ea a O RE E A E 142 T TREUE ty GGICULGT OM FON rer iae OTTOON OON OTONI 142 T2 Caculation SU CIOS ranana en 144 o APUCE TOES ana E E E aoe Scene E E E E 144 Wissel Uneertainties tolncudE cessie Eea Ea EEEE E E EEEE E 144 T32 Uncertainty rom The calibrat oN GaSirsscnccseescosernaenesene E 145 11 3 3 Uncertainty from GC Repeatability and LINGALI ty ecesesessesesseeesseeessesteseeesseensseetsseeteseeess 145 11 3 4 Uncertainty from GC Reproducibility sesesssessssecsssessssecsssecsssecsssessssecsssecsssessssessssesessessssess 151 Mi ee FASC Ov IME aE E oeeseneceetaraesteeasa ates 151 HA CACAO care Vo semper pelos Vn tas OWE eSATA SOV aT ee oS EN oy oa Tes Teo OE No NORIO 152 TAT Manual Mole Percentage Range srcrincoroceoo ne in as Strasser eesti aees 153 114 2 Regarding Sensitivity Analy SIS lt cececrecrecwcetenceae an necricercnaceeeeenencrenaidecnnoeneae gin 154 PES SOUTOUU IP ADCS aani anan aan ETENE TOETO E OE N TANO OONO 155 Page 6 of 388 GCAS Desktop Manual Guide rev 14 Higbee ad Umea Sa Vo AU crs C6 Darren sneer ney et OP re O meee nee 155 Moz Detaled RAGS arna uann arr TE T E RE TEE EE 155 12 Uncertainty COCTIICICINGS ainiai ana A EE E 15
168. This button brings you to the comment page Comments on this form is similar to comments on Data Analysis the comments aren t bound to a particular record Instead you need to provide the date of topic so other users know the background or context of your comment Page 183 of 388 GCAS Desktop Manual Guide rev 14 User ID Date posted Date of topic Comment Fost a new The CV uncertainty at this date has crossed the threshold line Maintenance is scheduled on next week comment Date of topic 08 October 2014 H Write your comment with the appropriate date of topic then click Submit Your comment will have a yellow background to distinguish it from comments by other users Make sure that the comment is correct e g free from spelling errors because once submitted you would not be able to remove your comment This is a part of audit trail requirements Click Refresh comments to reload comments If you do not see the text box to write your comment i e you only see the comment grid view your GCAS user account doesn t have the action permission to write comment in Uncertainty Trend Contact your GCAS administrator Page 184 of 388 GCAS Desktop Manual Guide rev 14 14 Uncertainty Trend Comparison Under construction Uncertainty Trend Comparison is a planned module to compare uncertainty trends across devices When this module becomes available this chapter will be updated Stay tuned for future releases of GCAS Des
169. This record flag was changed from calibration data to footprint at 13 February 2014 15 16 Minor adjustment this comment morning has produced a better result This is a good calibration data 7 5 2 Change Status Every footprint or calibration record has a status bit that can change from active to inactive or vice versa Inactive records will not be included in data analysis therefore will not affect the calculation of mean and standard deviation in data analysis Below are the steps to mark records as inactive or active 1 From an open Footprint or Calibration Data form go to Action menu gt Set status If you do not see this menu your user account may not have the action permission for it Contact your GCAS administrator Action Import Data Import Data CSV Import Data Manual Entry Add Comment Send to Correlation Calculator Print Preview Print 50 10723 2 This will show Set Status and Flag dialogue Record timestamp 12 December 2013 06 15 Set status Set flag Active OL Footprint C Inactive Calibration data Page 76 of 388 GCAS Desktop Manual Guide rev 14 3 Choose one of the options in Set status group whether to mark this record as active or inactive Click OK to commit the change 4 The form will reload the record and you should see the new status on the top section Next the Comments tab opens automatically and it is advised to write a comment o
170. To aid users with colour blindness protanopia and deuteranopia GCAS Desktop provides an alternative colour scheme for the chart Use the aie Colourblind assist button to switch colour scheme 0 3020 i Pentane comparison Device Stream ie DEMO 2 DEMO1 1 0 3010 j NN ah 1 A ME w Ne L 370XA DEMO 4 3 HL g j bas A 370 ph Jalna L WO gl dee Th i wv aie Lal vent 370KA DEMO1 1 0 3005 ge or ih aV ii e ai r Eee Ne 0 3000 V O8 Nov O8 Nov O8 Nov O9 Nov O9 Nov O9 Nov O9 Nov O9 Mov O9 Nov Nov O9 Nov 10 Mow 15 00 1200 3100 0000 03 00 0 amp 00 09 00 12 00 15 00 1200 21 00 00 00 Alternative colour scheme when colourblind assist is turend on Colourblind assistance works better with thick lines like in this screenshot Page 218 of 388 GCAS Desktop Manual Guide rev 14 18 Correlation Calculator Correlation Calculator is a tool to find the R correlation value for arbitrary number of data Footprint and Calibration Data already calculated R value of the calibration record however they follow a certain order of components gases for each GC device type If you need to calculate the correlation value without following those rules use this Correlation Calculator tool instead This tool does not only calculate RF MW correlation like those in Footprint or Calibration Data but also calculates correlation of any x and y number pair 18 1 The Correlation Calculator Form To o
171. Using the tree view on the left side choose the group and workspace where the new device will belong to Expand a 4 group node to see workspaces within this group and click a d workspace to select it The new device will be created under this workspace Page 295 of 388 GCAS Desktop Manual Guide rev 14 On the right side there are three main properties of the new device Device tag name is device name that will appear on the device panel on the main user interface It is a good practice to keep the tag name unique for each device Device type Select one from the list that matches your physical GC devices applies to both Daniel and ABB C5 EEL EEE C6 without er ge een C7 foe pee Eelert bate eis C7 without coen NNN Leber eae C9 cote EES e xe C9 without recurs Gee ele ESE a eee C10 conte OEE Nea PS et eee C10 without Pooper RES E Help on abbreviations go to chapter 6 C number glossary Additional glossary N2 nitrogen CO2 carbon dioxide Device date format Select one of the list or type a custom date format This date format follows MySQL convention We recommend to select from the dropdown list e m d y H M USA format For instance 01 12 2013 07 55 is interpreted as 12 January 2013 07 55 AM e d m y H M rest of the world format For example 01 12 2013 07 55 translates to 1 December 2013 07 55 AM Page 296 of 388 GCAS Desktop Manual Guide rev 14 W
172. a power cut happened your database in computer memory cache is lost If GCAS doesn t flush the file at all you will lose all data since the time GCAS was started With a periodic flush you lose only data since the last flush not all the way back to GCAS start time Nonetheless GCAS cannot protect your hard disk from physical damages especially during a power cut event To flush your database manually go to the File menu on main user interface Select Flush and Backup then Flush Now i Change Database i Reconnect Database es Export Data Ctrl E w gt Flush and Backup t w3 Flush Now Work Offline ke Automatic Flush and Backup Preferences oe Last Flush and Backup Status Notification Log Minimise to System Tray Exit Page 40 of 388 GCAS Desktop Manual Guide rev 14 GCAS can also backup your database file after a flush This feature is not yet turned on as you need to set up the backup destination directory beforehand By default GCAS flushes your database file once every hour You can configure the automatic flush settings at chapter 2 9 Automatic Flush and Backup 2 9 Automatic Flush and Backup On main user interface go to the File menu select Flush and Backup and finally Automatic Flush and Backup Preferences This menu shows the Automatic Database Flush and Backup dialogue z fi E imj on Change Database Reconnect Database Export Data Ctrl E Flush and Backup Flush and Backup Now Wo
173. a7 oor 127139 ooo 00545762 oo o0ase2o7 aaa Page 111 of 388 GCAS Desktop Manual Guide rev 14 Calibration Gas Certificate form Data in this screenshot ts fictional for illustration purpose only First tab is called Table here you see all mole percentage values and their corresponding absolute uncertainty as written on your paper certificate It also shows the relative uncertainty which is calculated from your absolute uncertainty This relative uncertainty is calculated at the k value coverage factor that is embedded in the certificate record in GCAS database To find out what is the k value for this record switch to the second tab Relative uncertainty also known as Ucal gas is a part of uncertainty calculation Second tab is Information where other properties of the certificate is listed Third tab is Comments which like the other forms in GCAS Desktop displays user comments for the certificate Table Information Comments lssue date 24 June 2014 Install date 23 June 2014 Expiry date 25 December 2014 5 more months k 1 Minimum pressure 10 barg Minimum temperature 25C Cylinder number CYL 0001 The Information tab Data is fictional 9 2 View Previous Certificates To view other calibration certificates Click bie Change certificate Select a different certificate then click OK or double click the list item Page 112 of 388 GCAS Desktop Manual Guide rev 14 Select a certificat
174. ages Selection o fi Compare Averages Entire X axis 618 bt Frame This Selection Remove Frames 61 6 Set Underlying Mole Composition Records as Inactive 10 00 1030 11 00 1130 1200 1 amp 30 13200 1330 14 00 2 Zoom All Gut Tx Hide Crosshair Cursors g Clear Selection Area Show Average Show Values Show Legend Show Gridlines Page 255 of 388 GCAS Desktop Manual Guide rev 14 Zooms in to the selection area Generate Summary Here Generates statistical summary for the selected area Compare Averages Prompts you to select two comparison entries out of whichever Selection available inside the selection area then compares the average of the two giving you the delta and difference in percentage See chapter 21 3 6 for details Compare Averages Entire X Prompts you to select two comparison entries out of all lines axis available on the chart then compares the average of the two giving you the delta and difference in percentage This menu does not even need a selection area See chapter 21 3 6 for details Frame This Selection Literally puts a rectangular frame around the selection for presentation purpose This works on the average chart too Set Underlying Mole As ISO 6976 calculation is based on mole composition records this Composition Records as menu sets the underlying mole composition records contained Inactive inside the selection area as inactive You need to refresh
175. ainty calculation takes four input groups 1 Uncertainty from the calibration gas a calibration gas certificate is mandatory 2 Uncertainty from GC repeatability and linearity 3 Uncertainty from GC reproducibility 4 ISO 6976 1995 inputs And it produces two output groups 1 Uncertainties of ISO 6976 1995 outputs 2 Uncertainties of GC for each gas component 11 1 The Uncertainty Calculator Form To calculate uncertainties of a particular GC device select the device on your device panel or recent device panel Then go to the View menu gt Uncertainty Calculation The form behaves like a wizard although it is not It has a collection of pages categorised into three groups inputs calculation and outputs To navigate between pages use the two buttons at the bottom right corner Next page or Previous page or you can also jump to the desired page straight away through the navigation tree on the left side Page 142 of 388 GCAS Desktop Manual Guide rev 14 Splitter move to resize the navigation tree Page content Uncertainty Calculator Test3 ee mm ee ee IWhat uncertainties to include in the calculation i gi Uncertainty from calibration gas i L Uncertainty from GC repeatability and linearity i gi Uncertainty from GC reproducibility i Uncertainty from the calibration Uncertainty from GC repeatabilit 2 Repeatability TIE i Select all i Mole percentage ran
176. al esas a sete reel eed 316 252 Upatended IVC Ce terest ercnstotene cease tect tate tate TAEI SIOE 317 2320 Data Cape Eror Eo 0 eera rent enrrervererevire rier ierrersveretrre rerernrt ter rrttersncrrnten rrncevire irri nrter are 319 2529 Data Capture Connection Logeren a E N A aaa ia 320 Zoo IMOGDUS Error codesand Handl acct ects cet careless nana ar EEEO EA 323 25 ADUCEM C OQO S a ees eae cease cnesc epee nemesis 323 25 3 2 Advanced GC Connection Preferences cccessecssessssessssessssesssscssssessssessssessssssessssessssessesesssseesesseseees 323 253 5 Automatic Connection Resta t ssena N antes cians eec en AEE 324 25 3 4 Automatic Connection Termination ou ccessssssessesssessesssessesssessesssessesssecsesssssessseessseseessseseesssesseseess 325 25 4 Controlling Multiple Data CaptureS ss sssesssoesssessseessesssorsssrosseosseesserssseossrossresseesserossrosseesseesssrossresseesss 326 25 4 1 Start Multiple Data Captures with Delay oc sssssssessssssessssssessessssssessseesessseeseseseesssessesssesseseeas 327 26 REDO Ees a ee ncn ae aon em pee ener 329 27 Administrator MCI iccuscosscsscccscecscdecssecccscacscdcsssessseucassddavsseusscecaesdeosasenssancoend dvavencauesoessevacsertdnbsedes 330 eee Maa GE i pic ey rege SRR TS SO NCEE STS rE en en ce Sy ene 330 Ahal Crete ar INC WS ON acetate creer core EITE E OOE reco arian ener CIOE GIERE 330 Ziadie SECM anvEXISUNG HSCF esanera ae RAE NE ETETE OORE 331 Page 11 of 388 GCA
177. al gas calculation at k 2 To obtain Ucai gas at k 1 divide these values by 2 WRM RF and standard deviation This is the required calculation before we get Urepeatability Here you see the mole percentage low limit and high limit according to the mole percentage range defined during input page Also if you selected manual mole percentage range you need to enter these low and high limit in this page Head to chapter 11 4 1 to get help on that topic Uncertainty of repeatability This is the result Of Urepeatability Calculation at k 1 Footprint and calibration data The form displays the response factor of the selected footprint and also average of all calibration data included in this calculation To see where the average calculation of the calibration data came from click on numbers that look like links That will open another form to show the data feed If you notice weird or unusual numbers at the average columns open the detailed view to see if there are offending calibration records that should ve been set as inactive Uncertainty of reproducibility This is the result Of Ureproducibility Calculation at k 1 Standard relative uncertainty This is the result of Usc at k 1 To this point we are half way finished with the calculation Compressibility factor It shows the calculation of Zmix and Zair based on the base pressure and temperature specified at ISO 6976 input page ISO 6976 calculation This page is probably worth vis
178. al mole percentage range during that input page the sensitivity of GC repeatability becomes the same as sensitivity of calibration gas and GC reproducibility The reason is mole range for GC repeatability is also taken from the calibration certificate But if you selected manual mole percentage range or used 2 standard deviations of mole composition records the lower and upper bound of mole percentage range do not correspond to the calibration certificate anymore Thus GCAS Desktop calculates the correct sensitivity values and use these values for Urepeatability Page 154 of 388 GCAS Desktop Manual Guide rev 14 11 5 Output Pages Output pages display calculation results The primary interests here are uncertainties of ISO 6976 outputs There is one summary page and five detailed pages one detail page for every uncertainty result 11 5 1 Summary Page Summary page displays five uncertainties of ISO 6976 outputs and also expanded relative uncertainty Uscat k 2 You can copy the report to clipboard save it to a text file or print it E Uncertainty Calculator Test3 ay pelo E Uncertainty calculation result ld Save Ol Copy i Print El INPUTS A o Uncertainty of calorific value Uncertainties to includ Uncertainty of molecular weight Uncertainty from the c Uncertainty of Wobbe index i isata irnom GC n Uncertainty of relative density 56 Uncertainty of standard density Repeatability Linearity Mole percentage
179. al offline database as in the screenshot below is greyed out it means you do not have GCAS feature Local Offline Database in your GCAS licence Choose which database GCAS should use i Vigilant central database _ Corporate database Local offline database Local Offline Database Open a GCAS database file on this computer permanently offline Database type C T Microsoft SOL Server Compact CE O Q Microsoft Access 2007 or later Database file CA Ryan Documents GCAS exports Export 2014 02 06 sdt Test the file Reset to default settings You should see the file name on your device panel and use GCAS Desktop as usual However you would notice several differences e This offline database file contains only the devices you have selected in wizard step 1 e This offline database file contains data for the limited date range you have set in wizard step 2 e Users who can log in to this offline database file are only you and those who joined the same groups as you Page 362 of 388 GCAS Desktop Manual Guide rev 14 File Profile Subscriptions View Comms Tools Administrator Window Help Action S No device selected 2014 02 06 sdf es E gt Change calibration data S Load latest calibration data lier ee ee Z Show footprint DEVICE NAME STATUS CALIBRATION DATA TIMESTAMP FOOTPRINT TIMES Active 13 January 2014 11 32 13 January Response Factor
180. al single point RF values Unlike Mark As the Convert To operation requires action permission MLC permanent conversion If your GCAS administrator doesn t give you this permission GCAS displays a message saying that you don t have sufficient permission to perform conversion when you select Convert To in this dialogue box Important Be very cautious when using Convert To Performing permanent conversions on wrong record will damage the record permanently For instance a calibration record is wrongfully marked as single point where it should ve been marked as MLC You should use Mark As MLC here But if you apply Page 87 of 388 GCAS Desktop Manual Guide rev 14 Convert To MLC instead the numbers will change to somewhere close to zero damaging the record permanently 7 11 3 Change MLC Flag Bit Multiple Records Changing MLC flag bit as described in chapter 7 11 2 only changes one record at a time Sometimes you need to change flag bit of a bunch of records such as when you notice calibration records coming from data capture should be marked as MLC but you forgot to set it in modbus mapping Therefore all these records are still wrongly marked as single point To save time go to the Action menu select ISO 10723 then select Mark As Bulk This dialogue lets you change MLC flag bit of all records of the selected GC device no exceptions or limited to certain date range or specific selections of available records F
181. alibration gas quality has degraded 2 Partial C6 elution to column 2 3 Partial C2 remains in column 2 Possible solutions 1 Check calibration gas pressure and ensure it is working above its dew point temperature 2 Adjust valve timing on valve 2 and or valve 3 Let s take a detour to the RF MW charts Here we see the R correlation value of C1 C2 C6 is short under the threshold of 0 995 By looking at the third chart we see that C6 is below the trend line Hexane is lower than where it should be C1 C2 C6 C3 C4 CS C1 C2 C3 C4 C5 C6 R 0 9938 R 0 9983 R 0 9888 7 5 7 5 7 6 Z a j 7 48 F r a fo 7 46 Fa a 7 3 7 2 7 1 P 0 93 118 143 168 193 2 18 1 55 1 75 1 95 113 138 163 188 Page 81 of 388 GCAS Desktop Manual Guide rev 14 We can infer that the hexane backflush stage is late so that a part of hexane eluted to the second column To achieve the goal in this example we need to adjust the timing of valve 2 to close a bit faster After making such adjustment we have a good correlation on the next calibration cycle C1 C2 C6 C3 C445 C1 C2 C3 C4 C5 C6 R 0 9980 R 0 9982 R 0 9979 7 0 F Be 7 6 TAS 7 46 7A T44 TA T42 T4 Td 7 38 T2 7 36 7 34 T 7 32 T 0 93 118 143 168 193 218 1 53 1 75 1 95 1 13 1 38 1 63 1 88 GC health status is only available for Daniel C6 and C7 devices Method of suggestion based on R values for Daniel C9 Daniel C10 and ABB GCs is currently not available 7
182. alysis or Mole Composition Comparison 19 4 Compare Two ISO 6976 Calculators Ever wondered how much is the difference of CV between two ISO 6976 Calculators Wonder no more Starting from GCAS Desktop version 1 7 3 0 ISO 6976 Calculator has been equipped with a Page 230 of 388 GCAS Desktop Manual Guide rev 14 comparison tool Probably the most common use for comparing two ISO 6976 results is when you are calculating how much the CV difference is between single point mole composition stream and its multilevel calibration counterpart To make a comparison first add description to each ISO 6976 Calculator form you wish to compare Next go to the Action menu and select Compare To then choose the target ISO 6976 Calculator form which appeared on the submenu If you didn t add description the submenu simply says no description It will become problematic if there are three or more ISO 6976 Calculators open and none of them has description Input composition Mole Base pressure ISO 6976 Calculator composition 1 01325 bar v F ressure and temperature Methane 48 692577 Combustion metering temperature Base pressure Nitrogen m ocroc v nD O os Carbon dioxide 2 888715 Combustion metering temperature eee gt Calculate 20 206376 C 0 C v 3 492133 5 612511 Test 14 07 2015 07 47 stream 1 single gt Calculate Output Output Value i Test6 14 07 2015 07 47 strea
183. amp T Gg E c The crosshair cursor is the dotted magenta line which appeared when you click anywhere on the chart region or as a remnant of a zoom operation These lines may act as a ruler or guide To remove these lines right click on the chart and select Hide Crosshair Cursors Response Factor 100 000 000 i 80 000 000 G a 60 000 000 y a 40 000 000 rf CCU ee eee er Zoom All Qut 8 P TTT 20 000 000 tg Hide Crosshair Cursors COs Nitrogen Ethane Propane i Butane n Butane i Pentane n Pentane Hexane Heptane Octane Nonane T co TD neaPentane Page 80 of 388 GCAS Desktop Manual Guide rev 14 7 8 GC Health Status GCAS Desktop may suggest an action should you see a fail alarm which is R correlation value is below the defined threshold For the time being this feature is only available for Daniel C6 and C7 GCs Go to the Health status tab on either Footprint form or Calibration Data form In the example below the correlation value of light and heavy components methane ethane hexane happened to be under the threshold Calibration Data CaseStudy3 real C fame i Change calibration data EA Load latest calibration data C Draw thinner lines Show footprint DEVICE NAME STATUS CALIBRATION DATA TIMESTAMP FOOTPRINT TIMESTAMP CaseStudy3 Active 22 December 2011 07 31 21 December 2011 12 47 Charts Tables Health status Comments Possible causes 1 C
184. an around the chart using the provided scroll bars Drag another rectangle to zoom in further To zoom out click the circled minus button on both scroll bars Press on your keyboard or right click the chart and select Zoom All Out to undo all zoom in operations Selection mode lets you create a selection area on the chart then makes some context menu available to manipulate the data inside this selection area Chapter 21 3 5 explains the function of each menu To clear selection area right click the chart and select Clear Selection Area 62 6 bel tave Chart as Picture OG Copy Chart Image o2 4 i Zoom In Here 62 2 eee j W Generate Summary Here fr AEN F Ay vA fh fig Compare Averages Selection P iy We P 62 0 V Ay i W fi Compare Averages Entire X axis e y 61 8 i Frame This Selection Remove Frames 61 6 Set Underlying Mole Composition Records as Inactive 10 00 10 30 17 00 11 30 12 00 12 30 13 00 13 30 14 00 Zoom All Qut Hide Crosshair Cursors g Clear Selection Area Show Average Show Values Show Legend Show Gridlines 21 3 3 Save or Copy the Chart To save the chart as image file right click the chart and select Save Chart as Picture Or if you prefer copying the image directly onto Microsoft Power Point for example or any software accepting bitmap image right click the chart and select Copy Chart Image Page 253 of 388 GCAS Desktop Manual Guide rev 14 Set Underlyi
185. ane i Butane n Butane Neopentane i Pentane n Pentane a 0 0 0 0 0 0 0 0 0 0 aro oal oa ral al al alala a amp 5l amp lala alala alallala lalalalalala alala cali Hexane amp Description Begin entering the coefficient numbers one by one Be watchful for potential human error Alternatively you can paste the coefficients from Microsoft Excel or other spreadsheet editing software as long as there are 4 columns and equal number of rows Click Paste to do so Enter both coefficient sets Switch tab to move from repeatability coefficients to response concentration coefficients or vice versa If you forget to enter coefficients for the other tab GCAS Desktop will alert you if one tab has all zeroes upon save Don t forget to set the date of test This is the date information of when the multilevel calibration was conducted not the date of when these coefficient sets was entered Write the description It is a good practice to provide a description about this coefficient set When you are finished click Save button or go to the Action menu gt Save Changes to save these coefficients into database Otherwise to cancel all of these go to the Action menu gt Edit Mode to remove its tick mark The form will revert to the last record viewed 12 5 Change Record Status Like other types of record in GCAS database uncertainty coefficient set has a status bit indicating whether the record Is active or inactive Pag
186. aniel GC legacy format File Edit Format View Help NGC Calibration 1 txt Notepad Totalflow Laptop Current Results Report Printed date 04 05 2613 Station ID MyDevice Device ID 15T CAL SYSTEM LEASE OPERATOR Results Date Time Stream Number Manifold Temp Oven Temp Calculation Type Stream Application Rev Metrology Control Number Flash Software Part Number Contract Pressure Contract Temp Carrier Pressure 1 Carrier Pressure 2 Sample Pressure Response UnNorm Norms Propane Hydrogen Sulfide IsoButane Butane NeoPentane IsoPentane Pentane Hexane 2 1454 9 6461 6 6008 33 1 1 5647 0 2098 Location Location of ist Cal STATE PRODUCER BUYER 04 05 2815 12 39 Calibration 65 268 deg C 627 541 deg C T50 6976 1995 21635567 007 2183315 861 2182411 829 161 696 kPa 18 6080 deg C 1082 211 kPag 97 128 kPag 66 830 kPag P Time P Area P Height 7431022 2058914 0 2220 870678 6 2625 826785 8 68098 8 1618 3881556 6 1419 719214 8 1662 574969 0 2202 B 2089 a 0000 6 1665 8 1467 8 6994 2999 6316 Liquids Ideal liter m3 MJ m3 TLE FE n wo Wo 4 1338 1 1476 1 1365 0 9218 6 8088 6 6808 6 6088 6 8088 8088 4162 85 7086 3 2844 6 9677 a 000a 4 80068 8 6008 4 6008 4 8008 Nitrogen Methane CarbonDioxide Ethane Hexane Heptane Heptane Octane Nonane 8 4135 1167156 66 3987 179694297 3 3166 16596613 7 0238 25259164 4
187. anual Guide rev 14 Press Show values or right click the chart and select Show Values to display the uncertainty values Be aware that too many data points on the chart will clutter the chart view U CV Trend DEMO1 0 10390 0 1039 UC 0 10388 0 10386 0 10384 0 10382 0 10380 0 10378 13 10 13 20 13 30 13 40 13 50 1400 14 10 14 20 14 30 14 40 14 50 15 00 GCAS Desktop displays four digits after decimal points Should you need a higher precision right click the chart and select Use 8 Decimal Precision on Labels Now the labels display 8 digits after decimal points These dotted lines are called cursors Cursors appear when you left click on a chart or as a remnant of zoom operation Cursor may act as a guide to compare Y axis values of two data points Click T Hide crosshair cursors or right click on a chart and select Hide Crosshair Cursors U CV Trend DEMO1 0 10390 UIC 0 10388 0 10386 0 10384 0 10382 0 10380 0 10378 13 10 13 20 1330 13 40 1350 1400 1410 1420 1450 1440 1450 15 00 In several occasions when you are comparing current chart to previous chart the two lines come so close that the current line chart obscures the previous line chart Click Af Use thin lines in order to make all line charts be one pixel wide making it easier to see two lines that are too close to each other Page 181 of 388 GCAS Desktop Manual Guide rev 14 U CV Trend DEMO1 0 10392 Previous UCV u
188. ap bytes also known as Modicon standard swaps the bytes within each word ABCD gt BADC e Swap words swaps low and high word but not bytes inside each word ABCD CDBA e Swap all swaps both words and bytes inside words ABCD gt DCBA e Don t swap preserves the original byte order ABCD ABCD 25 1 3 Calibration Parameter Registers Calibration parameter refers to response factor and retention time On Register Mappings form set the registers for RF and RT data to match those on your physical GC device Register address starts from 0 zero Address 0 translates to Modbus holding register 40001 Address 1 translates to 40002 and so on Change the gas order by selecting the correct gas names from the dropdown list Depending on your GC device type one to five bottommost input fields may be disabled For instance a GC device of C7 without neopentane only reads 11 gases Therefore twelfth to fifteenth input fields would be greyed out Page 301 of 388 GCAS Desktop Manual Guide rev 14 Ignore a part of incoming data You can make GCAS Desktop ignore incoming RF data for example if you want to capture retention time only or mole composition streams only To ignore response factor data untick Read response factor The same applies for RT data which you can control using Read retention time tick box On standard 16 bit Modbus one gas requires two Modbus registers For instance in the screenshot below methane RF
189. arameter wah arm i section _ Ethane A Propane C i Butane Drag a rectangleto Zoom Select n Butane y op A aul gal a EF Change footprint Pm iX w Chat Comments Propane RF Trend 11 000 000 e Propane RF 10 950 000 10 900 000 10 850 000 Chart 10 800 000 section 10 750 000 10 700 000 10 650 000 10 600 000 04Sep 11Sep 18Sep 25Sep O20ct O090ct 160ct 230ct 300ct 06Nov 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 Parameters section at the top is where you set everything in order to get the chart you want Chart section at the bottom graphs the chart Comments tab is the place to write your comment 10 2 Parameters Chart Types and Components This chapter explains the contents of the parameter section of Data Analysis form Page 120 of 388 GCAS Desktop Manual Guide rev 14 10 2 1 Parameters Select parameter RF O MC C RT O R This is the main switch to select which parameter to be graphed on the chart Users can graph the following parameters 1 RF Response factor 2 RT Retention time 3 MC Mole composition 4 R Correlation parameter If you see the MC mole composition option is disabled it means you do not have Live Data Analysis feature in your GCAS licence 10 2 2 Chart Types Chart Types are more specialised options for the selected parameter Available chart types vary depending on the selected parameter 10 2 2 1 Selected p
190. arameter RF response factor chart type RF trend D RF deviation trend Change footprint These options show up when the selected parameter is response factor RF 1 RF trend graphs the actual response factor values over time in history 2 RF deviation trend graphs the deviation difference of RF values against footprints in percentage This gives further options which are Page 121 of 388 GCAS Desktop Manual Guide rev 14 e Each latest footprint Each RF value is compared against its latest footprint Methane RF Deviation Trend 4 00 2 00 0 00 2 00 4 00 28 Aug 11 Sep 25 Sep 09 Oct 23 Oct 06 Nov 20 Nov 04 Dec 18 Dec 2011 2011 2011 2011 2011 2011 2011 2011 2011 These calibration data are compared against These calibration date this footprint are compared against this footprint e This footprint only All RF values are compared against a particular footprint value The footprint to set as the comparison base is configurable through Change footprint link Methane RF Deviation Trend 4 00 2 00 0 00 p 2 00 4 00 28 Aug 11 Sep 25 Sep 09 Oct 23 Oct 06 Now 20 Nov 04 Dec 18 Dec 2011 2011 2011 2011 2011 2011 2011 2011 2011 neers _geetinnrenn eeesnneat All these calibration data are compared against this footprint only 10 2 2 2 Selected parameter RT retention time Select chart type RT trend 3 RT deviation trend Change footprint These options show up when the s
191. ared or public computer 4 2 Main User Interface Once you have entered your valid credential you would see the main user interface HWE CaseStudy1 WE CaseStudy2 WEJ CaseStudy3 WEJ CaseStudy4 WE CaseStudys BFE Casestudy6 Search tool foram 199 2 Online Ready Search tool S E ill Online Ready 4 2 1 Device Panel The device panel lists all workspaces assigned to you and all GC devices under these workspaces Click on a GC device to select it Features such as Footprint Calibration data Mole Composition or Uncertainty Calculator works with one device only therefore make sure you select the correct device The selected device name is displayed on the top of device panel Learn more about workspaces Page 50 of 388 GCAS Desktop Manual Guide rev 14 ae Daniel GC either C6 complete or C6 without neopentane TE Daniel GC either C7 complete or C7 without neopentane Daniel GC either C9 complete or C9 without neopentane da ABB GC either C6 complete or C6 without neopentane WE ABB GC either C7 complete or C7 without neopentane at Unsupported GC 4 2 2 Recent Device Panel ail Daniel GC either C10 complete or C10 without neopentane Below the device panel is known as recent device panel This section lists your recently used devices Clicking a device on this list also selects it which is the same effect as selecting the same device from the device
192. as changed Comments tab does not open in case your GCAS user account doesn t have the action permission to post comments Page 97 of 388 GCAS Desktop Manual Guide rev 14 DEVICE NAME STATUS TIMESTAMP Test2 Inactive 28 March 2014 15 58 00 Chart and Table Comments Refresh comment Date posted Comment Post a new The record status was cha nged to inactive at 21 April 2014 10 30 52 Submit comment 8 6 Change Record Status Multiple Records Mole composition records mostly came from a data capture operation To make it worse many users set the data capture in unattended mode If an error happened during unattended data capture bad records will still be committed into database This may lead to numerous unusable records in the database and it is a tedious work to set their status as inactive one by one GCAS Desktop includes a tool to set record status in bulk batch operation From an open Mole Composition form open the Action menu and select Set Status Bulk If you do not see this menu your user account may not have the action permission for it Contact your GCAS administrator Spot Sampling Import Data CSV Set Status Send to 50 6976 Calculator Add Comment Normalisation Scale ISO 10723 Page 98 of 388 GCAS Desktop Manual Guide rev 14 This menu brings the Set Status for Multiple Records dialogue This window has two
193. atability Coefficients Response Concentration Coefficients DATE OF TEST 21 October 2014 Niogen 73200 vee SSS Carson diode seos 1570500 o o E T fume s2 meo o o Neopentane saoo arao o o mpentane as waso o Page 159 of 388 GCAS Desktop Manual Guide rev 14 Uncertainty Coefficients form has two tabs one for repeatability coefficients and the other for response concentration coefficients Repeatability coefficients are used to calculate standard deviation of GC repeatability and response concentration coefficients are used to calculate standard deviation of GC linearity At the bottom there is a text box to display additional note or description about the coefficient set Each coefficient set consists of four coefficients namely a b c and d on both repeatability and response concentration These are the coefficients of this formula 2 3 s a bx cx dx Where s is the standard deviation of one gas component used in the part of calculation and x is mole fraction of this component 12 2 View Previous Coefficient Sets To view other uncertainty coefficient sets click i Browse another set Select a different coefficient set then click OK or double click the list item ax Uncertainty Coefficients Test ES Load latest set DEVICE NAME STATUS DATE OF TEST Test8 Active 03 February 2015 Repeatability Coefficients Response Concentration Coefficients Component b 9 933 100 Pag
194. ault is reset calculation at each certificate On first option whenever a new calibration certificate installed all data after the certificate are calculated using the new certificate Old certificate New certificate 22 Aprl 2014 18 October 2014 I ll i a s Z SEES ee jf y ME ae j May Jun Jul Aug Sep Oct Nov Dec 2014 2014 2014 2014 2014 2014 2014 2014 Plot range start Plot range end 23 July 2014 31 December 2014 All calibration data All calibration data between 23 July 2014 between 18 Oct 2014 and 18 October 2014 and 31 Dec 2014 are calculated using the are calculated using the certificate of 22 April 2014 certificate of 18 Oct 2014 On the other hand the second option forces the Uncertainty Trend form to use a particular calibration certificate for all data within the plot range Click Change to display the Select Certificate dialogue and select the desired certificate Page 168 of 388 13 2 3 GCAS Desktop Manual Guide rev 14 Install date Cert number Status 15 June 2014 14 0541 01 qq Page 1 v of 1 gle h Filter Options List all certificates Entries per page List certificates between 08 Jun 2014 and Sot Newest to oldest 12 Dec 2014 Oldest to newest hw se Footprint Reference Set footprint reference Reference resets at each footprint Pin this footprint as reference 08 November 2014 13 13 Ey Change This section controls which footprints to use while calculating Urep
195. ause we cannot guarantee that the other device is the same type as the device you are configuring Their number of gases may differ Therefore we designed that the XML file belongs to a certain GC can only be used by that GC exclusively Nevertheless if you are very sure that both this GC device and the other device are of the same type you would need to edit the XML file using Notepad or any text editor Open the XML file and find the lt devices gt element It should be near the beginning of the file Inside lt devices gt find the lt tagname gt element Change the device tag name between lt tagname gt and lt tagname gt to match the name of the device you are configuring Save the file and then try to import the XML file again Page 309 of 388 GCAS Desktop Manual Guide rev 14 Ej Test4 xml Notepad View File Edit Format Help lt xml version 1 80 encoding utf 8 gt lt mappings gt lt mapping version do not modify gt lt info version 4 gt lt device information gt device gt lt l reference for relative register addressing gt lt reference gt l lt reference gt lt l bit length whether the registers are 16 or 32 bits gt lt bitlength gt 32 lt bitlength gt lt l byte ordering 1 swap bytes ABCD gt BADC 2 swap words ABCD gt CDAB 3 swap all ABCD gt DCBA 4 no swap ABCD gt ABCD gt lt byteorder gt 1 lt byteorder gt
196. ave the diagnostic information use the lal Save button on the toolbar Alternatively you can copy the contents through the ol Copy button then paste it onto notepad or any text editor Info If GCAS Desktop crashed it might not be possible to use the Save or Copy button on the toolbar because the user interface is frozen white shadowed by Windows operating system A screenshot of this frozen diagnostic window should suffice to help us understanding what the reason and at which point the error happened 30 2 What Happened to Bug Report Wizard Unfortunately we disabled Bug Report Wizard due to policy changes of our mail provider In the past Bug Report Wizard worked by sending your report and all additional attachments diagnostic log and Page 383 of 388 GCAS Desktop Manual Guide rev 14 optional screenshots via email to our development team behind the screen However our mail provider didn t seem happy and made few changes in their terms of use For that reason we need to temporarily disable the Bug Report Wizard until we developed a new reporting mechanism which doesn t involve SMTP email Bug Report Wizard has disappeared since GCAS Desktop version 1 7 2 0 For the time being please send your bug report with any additional attachments such as diagnostic log stack trace or screenshots to support i Vigilant com Page 384 of 388 GCAS Desktop Manual Guide rev 14 31 GCAS Startup Parameters Startup parameters
197. avity Uncertainty of standard density O O O O O The navigation button Next page and Previous page change pages in sequential order They may skip some pages depending on the selection you made on the previous page At anytime you leave input pages Uncertainty Calculator form should perform all calculations Once you are at intermediary calculation pages or output pages and you notice a mistake you can always go back to the input pages either by clicking Previous page button successively until the form arrives at the desired page or jump straight away using the navigation tree After you make some changes in the inputs and go forward to later page the form shall perform automatic recalculation thus new output values will update accordingly If you notice the form does not recalculate click Recalculate button or press F 5 key on your keyboard to force a recalculation 11 2 Calculation Steps The form calculates your GC uncertainty is using the sequence below Calculate Ucal gas if selected Calculate Urepeatability If selected Calculate Ureproducibility If selected Calculate Ugc at k 1 which is the standard relative uncertainty k is coverage factor oo YY lS Calculate Zmix compressibility factor of mixture and Zair based on the given base temperature and combustion temperature Perform all ISO 6976 calculations 7 Perform sensitivity analysis on ISO 6976 outputs D 8 Calculate Ucv Umw Uwobbe Usc and Ups
198. bic functions may have one two or three real roots GCAS will always reject any imaginary root and negative real root However if there are multiple positive roots Use the smallest one Use the largest one _ Use the one that yields result RF inside this range O Use the one that yields result RF inside or closest to this range To 15 000 000 From 500 000 Previous Net gt Afterwards enter the mole composition part of the calibration gas certificate You can paste from Microsoft Excel or other spreadsheet software click Paste to do so If the footprints calibration data to convert do not have gases such as neopentane octane nonane or decane leave their values to zero Enter components mole composition as in the calibration certificate If your GC doesn t have certain gases such as neopentane or octane or nonane leave their composition zero Page 277 of 388 GCAS Desktop Manual Guide rev 14 Next page is where you put the response factor values to convert In this example we are converting MLC RF into single point RF There are several ways to input RF values Orthodox method typing them manually row by row 2 Copy and paste from Microsoft Excel or other spreadsheet processing software Make sure the column ordering is correct as you may end up with wrong RF values in wrong gas Click Paste append to paste from clipboard into new rows Existing rows are not affected 3 Import from CSV please sp
199. brated records within the plot range into single point compositions before graphing them to the chart Records already marked as single point are plotted as usual MLC compositions converts any single point records within the plot range into multilevel calibrated compositions before graphing them to the chart Records already marked as multilevel calibrated are plotted as usual Don t convert ignores the MLC flag bit and plots all records within the plot range as they are Use this if you have slow network connection to the database server and you are confident that this GC device never have mixed MLC records and single point records Never select this option if you are unsure whether the device has mixed MLC flag bit as it will produce invalid MC trend chart Users with both GCAS feature SO 10723 and Data Comparison included in their licences see a link Compare both below the ISO 10723 trend dropdown This link is available if only one gas is selected It calls Mole Composition Comparison form sends the selected gas date time range and stream number then instructs Mole Composition Comparison form to compare single point versus MLC compositions If the single point and MLC curves are overlap or very close to each other your GC is more likely in a good condition If they drift too far your GC has too much bias and it will increase the uncertainty value 10 2 3 Components Components are selections of available gases to draw on the chart
200. by the preceding footprint calibration data are different This can happen if there is a new coefficient set installed between the timestamp of the calibration data and the timestamp of mole composition record PNG 0 6708 N A _ Remove mode Colourblind assist Ethane 3 3341 N A Show legend Show unnormalised Total 100 0000 N A _ High precision Show difference A MLC conversion warning 2 A The mole composition is not preceeded by any active MLC coefficients AX The associated calibration data is not preceeded by any active MLC coefficients Click on the warning icon to see the detailed reason why the record is not convertible Some items on the warning dropdown are shortcuts For example if it says the record is not preceeded by any MLC coefficient sets clicking on that item brings you the MLC Coefficients form in edit mode so you can enter the coefficients straight away Non convertible records display N A in either single point or MLC columns in both normalised and unnormalised depending on its MLC flag bit Records having flag bit marked as single point which is not convertible into MLC will show N A in MLC columns and vice versa Additionally the delta column through Show difference check box will be empty Note Spot samples are never convertible Spot samples are always marked as single point compositions To see the MLC coefficients associated with current record open the Action menu sele
201. cal GC device and hardwire its value to 1 negative one Use two sequential registers if you are on 16 bit Modbus On GCAS Desktop set the register address of the offending component s to the address of this special register By this way GCAS Desktop will record the value 1 thus will not display the component on RF or RT chart The chart will have gap s at the offending component s 25 1 6 Backup and Restore Configuration Import a configuration file HINEPAD Desktop Test_C9 xml Browse To back up your configuration click on the Export current mappings to a file link This will show the save file dialogue to save the XML file Page 307 of 388 GCAS Desktop Manual Guide rev 14 To restore your configuration click Browse button and load that XML file Next click Import button and GCAS Desktop should read the content and display register addresses accordingly Click Save Mappings at the bottom of the form to commit the change Note Backup and restore facility is not intended for copying settings from one device to another because we cannot guarantee that the other device is the same type of the current device You cannot use the XML file indended for one device on a different device If you need to do this and you are sure that both devices are of the same type a workaround is available in chapter 25 1 9 Troubleshooting 25 1 7 Reset to Default This section is only available if you have ever configured a devi
202. ce For first time configuration this box does not appear Revert to template Reset to default Permanently Your register configuration is stored in an XML file in installation directory Mappings DeviceSpecific directory Reset to default button will revert all register addresses back to the default definition as defined in template file When you click Save Mappings button at the bottom of the form your XML file is overwritten If you first tick Permanently before clicking Reset to default button not only GCAS Desktop restores all register addresses to the default definition as defined in template file but also it deletes your XML file Permanent reset will put your GC device in GCAS database into unconfigured state 25 1 8 Tools Shortcuts Tools shortcuts Shift all RF 0 Y EE E R L LA J rE Li F g pi FFF H UEKI to T A LERO S J Shift registers Swap mole stream and without altering register addresses Swap stream number Instead of retyping all register addresses of RF and RT use this section to shift registers addresses in one click Choose which one to shift RF or RT enter the amount of address shift between 10 000 to 10 000 and then click Shift registers Page 308 of 388 GCAS Desktop Manual Guide rev 14 You can also swap mole composition stream numbers without changing their register addresses Enter two existing stream numbers to switch place then click Swap stream number 25 1
203. certainty from GC re fraction Repeatability 0 803820 0 018661 0 010814 0 0459 0 023256 0 0459 0 001455 Linearity Nitrogen 0 045450 0 176018 0 044133 0 0456 0 141169 0 0456 0 010493 Mole percentage ra CO 0332 0 105263 0 077561 0 0332 0 148206 0 0332 0 006553 Uncertainty from GC re Ethane 06988 0 128792 0 096270 0 0460 0 142946 0 0460 0 009902 _ ISO 6976 inputs Propane 03326 0 150331 0 062876 0 0453 0 141345 0 0453 0 009766 H CALCULATIONS i Butane j 0 151332 0 060637 0 0102 0 158511 0 0102 0 002317 S cal gas ue or eee Standard S repro sll peat at uncertainty 5 OUTPUTS n Butane X 0 160321 0 065469 0 0103 0 159796 0 0103 0 002429 7 Summary Neopentane 00 0 41 0 090236 0 0030 0 399927 003 0 001740 Uncertainty of CV i Pentane 0017 0 318182 0 109353 0 0030 0 320717 0 001412 Uncertainty of MW cor n Pentane 001 0 318182 0 141793 0 0030 0 342239 TEIE 0 001489 Uncertainty of Wobbe Hexane 00 0 549954 0 154380 0 0038 0 165681 002 0 002255 ISO 6976 3 2 0 050000 Combined standard uncertainty 0 053593 Coverage factor k 2 Combined expanded uncertainty 0 107185 CV absolute uncertainty MJ m 0 045389 Legend Input editable Input from database Intermediary calculation Output Read only Recalculate F5 C Show intermediary calculations Previous page Next page gt Column names starting with U are uncertainties U repro for example is the uncertainty of GC reproducibility at k 1 Column names starting w
204. ces 1 Use the smallest positive Use the largest positive Use the one which yields a single point RF value inside a range or 4 Use the one which yields a single point RF value inside or closest to a range Page 262 of 388 GCAS Desktop Manual Guide rev 14 If you choose option 3 or 4 you have to set the range s lower and upper bound The default is between 500 000 and 15 000 000 because typical single point RF values fall between that range For mole composition GCAS Desktop offers another four choices Use the smallest positive 2 Use the middle one if there are 3 roots or smallest one if there are 2 roots 3 Use the middle one if there are 3 roots or largest one if there are 2 roots or 4 Use the largest positive In both cases the default cubic constraint is option 1 Most of the time you don t have to worry about MLC constraints As far as we tested the default constraint has worked for vast vast majority of RF and mole composition records There is a tiny tiny chance the default constraints do not produce the expected result which in this case you need to override the MLC constraints Visit chapter 22 3 to read more about levels of MLC constraints override or chapter 22 5 for how to actually override the MLC constraints 22 3 MLC Constraints Override Level Concept MLC constraints have a scope From the most generic to the most specific the order of scopes are global device coefficient and re
205. ces have over 100 dots on the chart which may clutter the g chart even more if you display their values Test stream 1 Test stream 1 Do you want to continue displaying labels for these devices This action may also cause GCAS to appear not responding for a few seconds Recommended Moj These dashed lines are called cursors Cursors appear when you click on a chart or as a remnant of zoom operation Cursor may act as a guide to compare Y axis values of two data points Click TX Hide crosshair cursors or right click on a chart and select Hide Crosshair Cursors to hide these lines from view Methane comparison Device Stream DEMO 2 DEMO 370XA DEMO 4 3 0KXA DEMO 1 08 Nov 08 Navy 08 Mov 08 Nay 08 Nay 09 Nov 09 Nov 09 Nov 14 00 16 00 12 00 2000 2200 00 00 02 00 04 00 By default GCAS Desktop draws the chart using a thin line The toggle button N Use thin line is pressed by default If you prefer the usual thick lines click this button to raise it from its pressed state Page 217 of 388 GCAS Desktop Manual Guide rev 14 83 010 Methane comparison Device Stream ee ed ee Ce a ee OA eee veneer ETE ieee E eee Ne eee eet ee DEMO 85 000 DEMO 3 0XA DEMO 4 84 995 370XA DEMO 1 84 990 84 9835 08 Mow 08 Mow 08 Mov 08 Nay 08 Nay 09 Nov 09 Nov 09 Nov 14 00 16 00 12 00 2000 22900 00 00 02 00 04 00 17 3 10 Colourblind Assistance
206. ckup Should these sync errors render your temporary database unusable follow these steps Go online and cancel automatic sync if any by pressing the Abort button 2 Open the File Explorer Windows Explorer on Windows Vista and 7 and navigate to installation directory DB WorkOffline directory 3 Delete your temporary database your username sdf 4 Rename your username sdf backup into your username sdf A better solution is available if you have ever made a proper backup of your temporary database Copy your current temporary database file to somewhere else Go online and stop any automatic sync by pressing the Abort button Open the File menu gt Work Offline gt Delete Temporary Database This will delete the problematic temp database file 4 Open the File menu gt Work Offline gt Use Existing Temporary Database Point to your backup sdf file Do a manual sync to refresh the temporary database file Should all the steps above did not provide remedy to the problem you might need to delete your temporary database and recreate a new one You may lose data which has not been synchronised to the main database server 29 9 Conflict Resolution A conflict is a mismatch between database record on your main database server and the corresponding record on your temporary database so that GCAS Desktop cannot determine which one to keep GCAS Desktop keeps track of when a record was changed and uses this information to determin
207. composition isn t displayed on these tiles OK Cancel Page 201 of 388 GCAS Desktop Manual Guide rev 14 Tick Override date rules for all devices in this workspace Similarly this is the main workspace override switch The two check boxes operate at similar fashion as per device override Nonetheless be reminded that device specific overrides take priority over workspace specific overrides Main ain General General Workspace Workspace Device Device Result Dashboard workspace device rule rule override override override override tile turns red if date override override active threshold active threshold active threshold of last calibration is switch switch older than lt gt takes priority on ona e say e o ON says sdas O oc says ON 10 days DC 15days 10days on 0c bos be oas ON 15 days 15days DC don t care 16 2 3 Revoking Cancelling an Override Revoking an override causes the device or all devices in a workspace to return to the general rules defined at the rules tab To revoke device specific overriding rules bring the Override Date Rules dialogue and untick Override date rules for this device Click OK to commit the change and the Dashboard window shall update itself To revoke workspace specific overriding rules bring the Override Date Rules dialogue and untick Override date rules for all devices in this workspace Click OK to commit the change To revoke all d
208. cord Global constraints are hardcoded inside your GCAS database The factory values are reject negative root for linear functions use smallest positive for quadratic functions and use smallest positive for cubic A ii constraints if required Second level of override is device level All ISO 10723 conversions on this functions although you can change these global device will use these MLC constraints instead of global constraints Third level of override is coefficient level All records using a particular MLC coefficient set shall use these constraints instead of the device level constraints But records using another MLC coefficient set will use another coefficient level constraints if that coefficient set has one or fall back onto device level if not Fourth level is record level On this level the MLC constraints apply to that record only Other records may have either their own record level constraints or fall back onto coefficient level While GCAS Desktop is converting from MLC records to single point GCAS Desktop loads MLC constraints from the most specific which is at record level If current record has no record level Page 263 of 388 GCAS Desktop Manual Guide rev 14 override GCAS Desktop moves down one step and look for coefficient level override If the MLC coefficients used by this record has no overridden MLC constraints GCAS Desktop moves down one step again and look for device level override If current GC
209. ct ISO 10723 then click View MLC Coefficients This menu calls Multilevel Calibration Coefficients form and loads the correct coefficient set associated with current mole composition record To see the calibration Page 106 of 388 GCAS Desktop Manual Guide rev 14 data or footprint which is used by current mole composition record click View Associated RF in the same ISO 10723 menu 8 10 1 MLC Flag Bit Similar to footprint and calibration data all mole composition records have MLC flag bit to indicate whether it is single point or multilevel calibrated The easiest way to see MLC flag bit is to look at the title of pie chart It says the stream number for example Stream 2 and if the MLC flag bit is multilevel calibrated then the title appends MLC after stream number If there is no other text then it is single point Alternatively open the Action menu and select ISO 10723 The first submenu is not clickable but it states the MLC flag bit dministrator Window Help Action Bl Spot Sampling fi Import Data CSV Test Set Status Set Status Bulk Send to ISO 6976 Calculator Add Comment i Change record DEVICE NAME Test TIMESTAMP 14 April 2015 14 57 Normalisation Scale ISO 10723 Flag bit in database MLC MC Chart and Table Comments Mark As or Convert Io Stream 1 MLC Mark As Bulk s View MLE Coefficients View Associated RF Butane Change MLC
210. d 2 RF C Mc RF trend bed Save Chart as Picture C RT Or O RF deviation trend e 2 Copy Chart Image Gelert co eni Zoom In Here Generate Summary Here Methane C Nitrogen Frame This Selection E Carbon dioride Drag a rectangle to G Remove Frames C Ethane Select all Change footprint dp ma sisal Set These Records as Inactive oe oe a a z a p r Mark These Records as Single Point Mark These Records as MLC Chart Comments Send to 50 6976 Calculator Averaged Methane RF Trend so Send to ISO 6976 Trend Send to Correlation Calculator Selection Averaged 7 000 000 E ion C All G Send to Correlation Calculator All Gases Averaged 6 800 000 Send to Mole Composition Comparison Zoom All Out 6 600 000 Hide Crosshair Cursors Clear Selection Area 6 400 000 i Set Y axis Scale Reset Y axis Scale 08 Nov 14 08 Nov 14 09 Nov 14 09 Nov 14 Set X axis Scale 12 AM 12 PMI 12 AM 12 Phe 6 200 000 Reset X axis Scale Reset X axis Tick Mark Format Toggle Light Dark Background Show Values Show Legend line Ready Show Gridlines To copy the chart right click and select Copy Chart Image Then you may paste the image into Microsoft Paint Microsoft Office or any software that accepts bitmap image picture data on clipboard Tips before saving or copying Enlarge the chart by maximising the Data Analysis form collapsing the device panel and expanding the
211. d octane Is 10 of hexane Split numbers increase the accuracy of ISO 6976 outputs If you have these split numbers enter them at the designated input text box For C6 devices you can enter up to 5 splits which are the division among C6 C7 C8 C9 C10 C7 devices accept maximum 4 splits and C9 devices accept maximum two splits C10 devices cannot accept split numbers because current version of GCAS Desktop supports up to C10 only The split numbers being entered should add up to 100 If they don t GCAS Desktop will normalise them before redistributing the certificate mole percentage For example 50 30 normalises to 62 5 37 5 so their sum becomes 100 If you don t have split numbers leave it blank GCAS Desktop will treat hexane or heptane or whatever the highest carbon count as a single entity throughout the calculation 11 4 Calculation Pages When you finished with ISO 6976 inputs clicking Next page will take you directly to the output summary page and skipping the calculation pages They were skipped because most users are only interested with the results If you want to visit calculation pages please check Show intermediary calculations before clicking Next page Alternatively expand the CALCULATIONS node at the navigation tree then pick an item to navigate Page 152 of 388 GCAS Desktop Manual Guide rev 14 Calculation pages consist of ten pages 10 11 4 1 Uncertainty of calibration gas This is the result of Uc
212. d the data capture terminated mole composition records stop coming and you notice the timestamp of last mole composition record is stationary after several dashboard refreshes Default setting dictates that dashboard tiles should turn red if date of last mole composition record is older than three hours You can change the threshold the time unit minutes hours days or turn off the rule at the rules tab Do not put unrealistic threshold for instance 1 minute because mole composition records usually come every 4 7 minutes Specifying the threshold to a value lower than GC cycle time will cause the dashboard tile to become everlasting red Rules for date of last mole composition is also overridable at per workspace and per device level Visit chapter 16 2 Overriding Rules for more information Page 194 of 388 GCAS Desktop Manual Guide rev 14 16 1 2 Rules fe Dashboard Settings Health status to display Rules lf at least one of the ticked conditions below is true the tile shall turn red Mutes Date rules are overridable on each workspace and each device right click the tile to override Uncertainty calc settings Health status Condition Value Unit R threshold set in analysis parameter typically 0 995 Miscellaneous Uncertainty of CV expanded gt Jo Uncertainty of standard density absolute gt 0 63 kg m Display style Lowest R of last calibration My Device v Date of last calibration older than 60
213. defootprintUT UTdiagnostic GCAS Desktop Manual Guide rev 14 Forces GCAS Desktop to exclude the last footprint while calculating uncertainty values in Uncertainty Trend module On normal forward calculation the data included to calculate the uncertainty at one point is taken from the last footprint including the footprint itself up to this point This switch causes GCAS to exclude that last footprint so data range starts from one calibration after the footprint On normal backward calculation the data included to calculate the uncertainty at one point is taken from that point and travels backward If you set GCAS to trim at footprint the last footprint is included in the calculation but it stops hence the footprint is the last data With excludefootprintUT GCAS stops at one calibration after the footprint Nevertheless if you set GCAS to continue through include data before footprint then this switch has no effect Activates the Uncertainty Trend diagnostic Additionally these are a list of advanced start up parameters for GCAS Activator GCASActivate exe info compcode install lt licence string gt regkey lt 6 digit registration key gt revoke Displays a quick help in a console window or a message box Displays the details of the licence and registration key installed on your computer Displays the computer code of your computer Installs the specified GCAS licence or replaces cu
214. detailed reason why the record is not convertible ie Change calibration data Ee Load latest calibration data _ Draw thinner lines Show footprint DEVICE NAME STATUS CALIBRATION DATA TIMESTAMP FOOTPRINT TIMESTAMP Test The footprint record is not MLC convertible 14 April 2015 14 28 This calibration record is not MLC convertible i There are no MLC coefficients installed before the footprint Charts Tables Health status Cc ae X ee There are no MLC coefficients installed before this calibration data Show AW Response Factor 1 2000 3 0 8000 5 E MLC conversion warning icon Page 85 of 388 GCAS Desktop Manual Guide rev 14 To see the MLC coefficients associated with current record open the Action menu select ISO 10723 then click View MLC Coefficients This menu calls Multilevel Calibration Coefficients form and loads the correct coefficient set associated with current footprint or calibration data 7 11 1 MLC Flag Bit Footprint and calibration records have an additional flag bit to indicate whether the RF values are single point or multilevel calibrated If you don t have SO 10723 feature in your licence this flag bit is always set to single point To recap footprints and calibration data have three flag bits One to indicate active inactive another one to indicate whether it is a footprint or calibration data and the last one to indicate whether its RF are single point or MLC Open the Acti
215. device has no MLC constraints defined either then GCAS Desktop falls back to the global MLC constraints 22 4 The Multilevel Calibration Coefficients Form Multilevel Calibration Coefficients form abbreviated as MLC Coefficients form is a form to enter or edit MLC coefficients of a GC device Select the desired device from your device panel or recent device panel then go to View menu gt Multilevel Calibration Coefficients MLC Coefficients Test ES Load latest set fe Browse another set DEVICE NAME STATUS Test6 Active DATE OF TEST 02 October 2014 Component Nitrogen Ethane Propane i Butane n Butane Neopentane i Pentane n Pentane Hexane a 118 39213 0 112799 0 045907 115 84367 0 106963 0 70313 0 120025 0 120025 0 002252 0 009661 0 003119 b 0 00055583 4 7705E 05 4 5226E 05 0 00096907 2 862E 05 3 9947E 05 2 6352E 05 2 6352E 05 2 0357E 05 1 7 788E 05 2 313E 05 m 6 69E 10 2 895E 10 0 2 9345E 09 0 1 2156E 10 1 394E 11 1 394E 11 2 80E 11 1 098E 10 6 8382E 10 2 8147E 15 0 2 07 17E 16 22411E 17 22411E 17 2 2002E 16 1 075E 15 3 0725E 14 Display style Auto 2 Number _ Scientific Description 22 4 1 View Previous Coefficient Sets Click Browse another set at the top of the form This button shows the Select a coefficient set dialogue Select the desired coefficient set then click OK or double click on the list item Page 264 of 3
216. dicated with asterisk after stream number similar to the green line in this screenshot example Mole Composition Comparison alaj Short araqn GIT gran Al Gas to compare jf 150 10723 sample Show Device tag am TE Methane _ Test hn Hog From Test6 i _ Equal scaling 06 June 2015 11 00 Hr Test it LJ Mole fraction Refresh Clear MLC cache June 20151500 ir Collapse all jd lt Remove Remove all a i E Methane comparison Device Stream 1 IL ice At 12 00 on 13 00 30 14 00 17 3 Comparison Chart The chart graphs the historical mole composition of the selected gas over time limited by your plot range device stream number and single point or MLC selection for ISO 10723 at a time This chart has maximum capacity of 15 comparison entries The legend at right side tells what gas it is the devices and their stream numbers Multilevel calibrated streams ISO 10723 are indicated with asterisk after their stream numbers 1 8080 Propane comparison Device Stream 1 8060 DEMO 2 DEMO 1 nf f 370KA DEMO1 1 oc PAA AN 1 8020 1 8000 08 Nov 08 Nov 09 Mov 09 Nov 09 Nov 09 Nov 10 Nov 10 Mov 12 00 18 00 00 00 06 00 12 00 12 00 00 00 06 00 Page 207 of 388 GCAS Desktop Manual Guide rev 14 By default GCAS Desktop draws the chart using thin lines unlike all other charts in GCAS Desktop which use 2 pixel width Line charts having data points less than 10
217. ditioned by the regulator e Line compressibility The compressibility factor Z of the gas at this stage e Tube inner diameter Inside diameter of this pipe e Tube length Total length of the pipe e Bypass flow How much gas being discarded before entering the next stage One stage data is contained in one tab To add more stage open the last tab Add stage then the form automatically creates a new tab for you To remove a stage click Remove this stage at bottom left corner of a tab Note You can add up to 32 stages maximum When you finished entering all stage data click Next GC time to move onto next tab Page 291 of 388 O Do not include GC analysis time to the total lag time Analysis Parameters Include GC analysis time override eel seconds or O0h 04m 10 005 Prev Pressure letdown stages GCAS Desktop Manual Guide rev 14 GC time is cycle time plus analysis time of the GC device This time value is added to the total lag time so far but you have the option not to include GC analysis time if desired The second radio button is disabled because Lag Time Calculator form is in offline calculation mode This option is intended for device bound calculation mode which is not yet available in GCAS Desktop version 1 8 1 0 Pay attention to units of measurement as wrong unit will produce wrong result When you are ready click Calculate at the bottom left corner of the form Lag Time Calcula
218. e Install date Cert number Status 02 June 2014 01 June 2014 CERT 0001 i d Page of Filter Options List all certificates Entries per page 30 List certificates between 23 Dec 2015 and Sort Newest to oldest 27 Jun 2014 O Oldest to newest Show Any status Cancel Click gt Load latest certificate to return to the most up to date certificate 9 3 Input a New Certificate As calibration certificates come as hardcopies you need to enter the mole percentage and uncertainty values meticulously by hand Open the Action menu and select New Certificate If you do not see this menu you may not have the action permission for it Contact your GCAS Administrator Edit Certificate Set Status or k Number Send to ISO 6976 Calculator Add Comment The New Calibration Certificate entry form shall appear Begin by entering certificate properties such as certificate number issue date install date expiry date minimum storage and or usage pressure minimum storage and or usage temperature cylinder gas tank canister serial number and the k value coverage factor Page 113 of 388 GCAS Desktop Manual Guide rev 14 New Calibration Certificate E E Device Test3 Certificate number fo Issue date 26 June 2014 fr Minimum pressure 2 MPa 20 bar Install date 27 Junie 2044 H Min temperature 20 C Expiry date 27 December 2014 lr Cylinder number Mole percentage Absolute uncertainty Methane 0 0 0
219. e Propane n Butane i Butane n Pentane i Pentane neoPentane Hexane Heptane Octane Nonane 4 969 560 6 356 461 8 202 302 10 422 670 11 861 070 11 407 460 13 644 450 13 198 640 12 676 400 79 599 050 94 481 940 98 745 780 99 462 830 158 01 16 04246 Methane 132 36 28 01340 Nitrogen 207 63 30 06904 Ethane 51 14 44 09562 Propane T343 38 12220 n Butane 65 39 38 122420 i Butane 130 56 72 14878 115 99 72 14878 94 15 72 14878 106 49 86 17536 Hexane 164 81 100 20190 Heptane 283 94 114 22850 Octane 39 33 128 25510 Nonane n Pentane i Pentane neoPentane 5 168 578 6 401 351 133 76 152 03 16 04246 28 01340 7 938 170 187 51 44 00950 8 317 067 10 237 440 11 863 650 11 853 870 13 061 220 13 461 330 12 480 250 79 849 440 91 650 670 98 252 220 99 576 920 208 26 30 44 13 23 67 26 128 76 113 75 96 83 109 00 164 74 284 17 47 33 44 09562 38 12220 38 12220 72 14878 72 14878 72 14878 86 175336 100 20190 114 22850 128 25910 Special value 1 If you see 1 negative one for all RF values in one or both of the table views this means the calibration data or its footprint does not have response factor data This record may come from data capture operation but with an additional configuration to ignore incoming RF data Similarly if you see 1 00 for all RT values the calibration data or its footprint does not have retention time data Read more about incomplete calibration record
220. e except the COM number For Ethernet or Wi Fi connection enter the IP address of your GC device and the TCP port Refer to your GC device about the TCP port it listens Modicon standard recommends 501 502 or 1100 depending of the Modbus protocol set in the device settings 25 2 3 Device Settings This sections configures the Modbus protocol to communicate with GC device Available Modbus protocol depends on the connection medium set in connection settings Device settings A2 Protocol RTU w Slave ID i Timeout 1000 ms Poll delay 1000 ms Serial cable 1 ASCII plain text 2 RTU remote terminal unit Ethernet or Wi Fi 1 Modbus TCP 2 RTU over TCP Slave ID is the Modbus device identifier that ranges from 1 to 255 In a typical one device to one computer configuration usually the slave ID is 1 one Refer to the configuration on your GC device to get the slave ID Page 312 of 388 GCAS Desktop Manual Guide rev 14 Timeout is the period GCAS Desktop should wait after a Modbus command has been issued to the Device Default value is 1000 milliseconds one second for serial cable and 5000 ms 5 seconds for Ethernet or Wi Fi Note for RTU protocol serial cable this timeout starts counting after the standard 3 5 second wait as specified in the RTU protocol specification itself Minimum value is 10 ms Poll delay is the period GCAS Desktop should wait after a timeout occurs before it retries to issue the sam
221. e it is time to perform a preventive maintenance of the GC Note This module requires Uncertainty Trend to be included in your GCAS licence 13 1 The Uncertainty Trend Form Select a device on your device panel or recent device panel then go to the View menu gt Uncertainty Trend EE Uncertainty Trend 370XA DEMO Sa Uncertainties to include Uncertainty of GC repeatability ISO 6976 calculation Uncertainty of calibration gas Use this coefficient set Base pressure 1 01325 bar E 2 October 2014 Ee Change Combustion metering temperature pair Uncertainty of GC reproducibility Mole percentage range ec orc we Set calibration certificate Universal 20 0 a Direction of calculation What s this Forward O Manual set range Minimum number of calibration data after Use 20 of mole comp records footprint to start graphing 1 Calculation resets everytime a new O Individual set range certificate is installed Use this certificate for everything 15June 2014 Gee FAR ee 06 Jul 2015 00 00 Calibration data range inclusion mode Set footprint reference Reset at each footprint Refer S E emer ear 06 Aug 2015 11 13 eference resets at each footprin C Backward Pin this footprint as reference 1 08 November 2014 13 13 fie Largest component is balanced Plot range Trim at footprint From 06 July 2015 00 00 to 06 August 2015 11 13 fr Threshold value 0 200 Inc
222. e latest RF RT data is not cached during the launch of GC Connect form If GCAS Desktop was instructed to ignore RF or RT data during data capture GCAS Desktop assigns a special value 1 to all RF or RT values This 1 value is not drawn on Data Analysis form Using this switch overrides the behaviour 1 values are always graphed Disables double buffering on your graphic card when rendering GCAS Desktop main form Use this switch if you experience display problem or performance drop when using GCAS Desktop Forces GCAS to reveal empty points in Uncertainty Trend chart Empty points are data points that only has X value without Y value or its Y value is undefined Example of empty points is when you set the uncertainty trend in forward direction and the minimum number of data is 10 then the first 9 calibration data after a footprint are marked as empty hence is not drawn on the chart and you see a gap With drawemptyUT GCAS Desktop draws grey dots for empty points The X values of these grey dots are valid correspond to dates and times on X axis correctly but their Y values are meaningless Disables cache in the Uncertainty Trend module GCAS Desktop caches the calibration certificate and footprint reference while calculating uncertainty values Disabling the cache means GCAS Desktop will always retrieve the footprint and certificate values from database This makes calculation time becomes longer Page 386 of 388 exclu
223. e octane and nonane Visit chapter 18 to read more about correlation calculator Page 83 of 388 GCAS Desktop Manual Guide rev 14 Correlation Calculator Add entry R 0 6373 MIW RF MV Calculator Any X Calculator Molecular weight Response factor cu 100 357 000 Ethane 166 916 496 Propane 207 781 600 Butane 246 035 808 Pentane 296 361 600 Hexane 325 306 400 Heptane 166 789 693 440 Octane 201 263 005 696 Nonane 225 908 494 336 Decane 42 4535 792 708 Log response factor 1 7602 1 3602 1 5602 1 7602 1 9602 2 1602 Log molecular weight Correlation Calculator with data sent from Footprint or Calibration Data form Delete unwanted gases to get the correct R result For example to get the correlation of C7 C8 C9 C10 delete everything from methane to hexane 7 11 Multilevel Calibrated RF ISO 10723 GCAS Desktop supports the traditional single point response factors as well as multilevel calibrated MLC response factors Note This feature requires SO 10723 feature in your GCAS licence Users with SO 70723 feature in their licences will see MLC selector at top left region of response factor chart This dropdown list lets you change the displayed RF whether the single point or the MLC one GCAS Desktop performs ISO 10723 conversion on the spot therefore the actual RF values in the database are not affected By default GCAS Desktop displays single point RF Page 84 of 388 GCAS Desk
224. e 160 of 388 GCAS Desktop Manual Guide rev 14 Select a coefficient set a Date of test Description 03 February 2015 Ho d Page of 1 2P H Filter Options List all coefficient sets Entries per page 30 List coefficient sets between 02 Feb 2015 ne Sort Newest to oldest 06 Aug 2015 Oldest to newest Show Any status v Cancel Select a coefficient set dialogue Windows 10 doesn t render form border Click 1 Load latest set to return to the most up to date uncertainty coefficient set 12 3 Edit Mode In order to edit the coefficients or the description you need to put Uncertainty Coefficients form in edit mode Open the Action menu and select Edit Mode You know the form is on edit mode when you see ra pencil icon some labels are coloured orange and there is a Save button at the top region of the form Edit Mode New Coefficient Set Save Changes Set Status Page 161 of 388 GCAS Desktop Manual Guide rev 14 Edit mode Uncertainty Coefficients Test3 i Browse another set bet Load latest set lal Save DEVICE NAMIE STATUS Fa DATE OF TEST Test3 Active 21 October 2014 a Repeatability Coefficients Response Concentration Coefficients f Edit mode Component a b Methane 11 641 000 Nitrogen 73 230 12 983 000 Carbon dioxide 8 839 3 15 795 000 Ethane 8 470 4 17 971 000 Fropane 66 586 22 322 000 i Butane 53 559 26 367 000 n Butane 9 265 2 27 108 000 Neopentane 39 089 29 729
225. e 164 of 388 GCAS Desktop Manual Guide rev 14 To change status open the Action menu and select Set Status This menu brings the Set Status dialogue where you can flip the status bit from active to inactive or vice versa Edit Mode New Coefficient Set Active OK Save Changes _ Inactive Click OK and GCAS Desktop instructs the Uncertainty Coefficients form to reload the set with the new Status E Browse another set al Load latest set DEVICE NAME STATUS DATE OF TEST Test3 Inactive 21 October 2014 Repeatability Coefficients Response Concentration Coefficients Component b w w o o Neogen ss om o o amene aws ss o o Propane amw nas o o r A a A Neopentne sa ams o o e a T A mpeane m o S e e So Description First set We believe it is a good practice to provide a short note of why the set was made inactive or active To write this note invoke edit mode from the Action menu write the note on the description box and finally click Save Page 165 of 388 GCAS Desktop Manual Guide rev 14 13 Uncertainty Trend Uncertainty Trend is a module to graph uncertainties of a GC device over time It is equivalent to running many individual uncertainty calculations with the same configuration for an increasing range of calibration data and finally plotting result numbers on a graph The chart has a threshold line When uncertainty line crosses the threshold lin
226. e MLC coefficents Coefficient a and b are mandatory and also b must not equal to zero Coefficient c and d are not always present in the analysis function depending on the GC The term coefficient set refers to collection of MLC coefficients for all gases Every gas has their own analysis function equation thus has their own coefficents These coefficients are bundled together into one record of MLC coefficient set in GCAS database 22 2 MLC Constraints Concept Multilevel calibration constraints abbreviated MLC constraints are a set of rules to determine which root to use in polynomial MLC to single point conversion The opposite direction single point to MLC conversion doesn t need constraints MLC constraints consist of linear constraint quadratic constraint and cubic constraint Recall the equation of analysis function y a bx cx dx During MLC to single point conversion the task is given this y value find x that satisfies this equation A polynomial function may have several roots solutions therefore MLC to single point conversion require constraints to select the correct root On the other hand single point to MLC conversion is much easier Find y given this x value means GCAS Desktop simply subtitues the x and evaluate the function to get y Page 261 of 388 Which one E E I Fj Which ae GCAS Desktop Manual Guide rev 14 Linear constraint If the coefficient c and d are ze
227. e Manual low limit Manual high limit 4 Use plus minus twice standard deviations The range is taken from twice of standard deviation of mole composition records over the specified period of time filtered to the Page 172 of 388 GCAS Desktop Manual Guide rev 14 specified stream Methane MC Trend Stream 1 90 3000 Mean a 2 std dev std dev wm ALIN A A A e ee WY ET Y VV 90 0300 06 Jun 08 Jun 10 Jun 12 Jun 14 Jun 16 Jun 18 Jun 20 Jun 22 Jun 2014 2014 2014 2014 2014 2014 2014 2014 2014 Finally the last check box controls whether to treat the component having largest percentage as the balanced gas Balanced component means its composition is not taken from the calibration certificate but from 100 minus the others instead Balanced gas keeps the mole percentage sum at 100 while without balanced gas it may go over 100 and below 100 Unlike Uncertainty Calculator form which you can choose which one to become the balanced gas Uncertainty Trend always selects the gas with largest mole percentage as balanced For a rare occasion where there are multiple gases sharing the same largest percentage e g two gases have 40 each GCAS Desktop selects the first gas as the balanced one Gases are sorted using RF sort order 13 2 5 ISO 6976 Parameters ISO 6976 calculation Base pressure 1 01325 bar w Combustion metering temperature pair OC 0 C W This section contains the base pressure a
228. e Modbus command to GC device Default value is 1000 ms but you can set it to zero if you don t want to wait 25 2 4 Data Retrieval Options Data retrieval options Poll every 15 seconds w Push to database O Bs Save to CSVs Change destination files You can set the poll interval at poll every input field starting from as frequent as every 5 seconds up to every 90 days Typically the poll interval is between 10 to 20 seconds You can also match poll interval to the cycle time of your GC device however please make sure time difference between the poll and the end of cycle is not too far apart Data destination Choose where the captured data is being uploaded to e Push to database Data is uploaded to GCAS database e Save to CSVs Data is saved as two CSV files For CSV option GCAS Desktop creates two CSV files One for RF and RT data another for mole composition If you do not have GCAS feature Live Data Analysis in your licence the latter CSV is not created GCAS writes only the RF and RT data into one CSV file The file for RF and RT data follows i Vigilant CSV format so that it is usable for CSV import on Footprint or Calibration Data form Similarly CSV file for mole composition follows the format recognisable by CSV import on Mole Composition form Mole composition values are left unnormalised when GCAS Desktop writes to the CSV When you import this CSV through the Mole Composition form the values will
229. e X which enforces a different calibration policy for instance once every 7 days This causes the dashboard tiles under Workspace X to become red if their last calibration date Is let s say 5 days ago By overriding calibration date rule for Workspace X we can specify that all devices under Workspace X uses 7 day rule not three Device specific override has priority over workspace specific override For instance Workspace X has five GC devices named X1 X2 X3 X4 and X5 These five devices were calibrated 9 days ago Your general rule state 3 day calibration rule but those under Workspace X are overridden to use 7 day calibration rule Now let s override the date rule for device X4 to be 14 days As a result device X1 X2 X3 and X5 become red while device X4 is still green You can even override the on off status of a date rule For example the general rule for last calibration date is turned on but this particular device is overridden as turned off You shall see other devices have green or red font on their dashboard tiles while this device has black text for its last calibration date The same applies for the other way round if the general rule is turned off but you wish to turn on date rules for several devices or workspaces 16 2 1 Per Device Override To override date rules at device level right click the dashboard tile Page 199 of 388 GCAS Desktop Manual Guide rev 14 Customer X T o R 0 9977 R
230. e on tablet mode Next go to All Apps Jump to the letter I then find i Vigilant Technologies Inside the folder you will find the Change Database shortcut I Vigilant Technologies New Change Database New Change Licence New GCAS Desktop New Java Development Kit N ev Back Page 37 of 388 GCAS Desktop Manual Guide rev 14 4 Alternatively run GCAS Desktop with additional changedatabase parameter Type the name of a program folder document or Internet resource and Windows will open it for you Any of the actions above would bypass the login screen straight to the Change Database dialogue On this dialogue box select the desired database server twm Choose which database GCAS should use j Vigilant central database O Corporate database Local offline database i Vigilant Central Database The data i stored on Vigilant database server Select server oft SQL New server Microsoft SQL proxy Test connection Click OK and start GCAS Desktop again Page 38 of 388 GCAS Desktop Manual Guide rev 14 2 6 Reconnect on Network Problem If you were disconnected from GCAS database server because of network problem GCAS Desktop displays an overlay notification and the status bar reads Network Problem Click anywhere on the overlay to dismiss the notification File Profile Subscriptions View Comms _ Tools Window Help 370XA DEMO B i Vigilant New server Microsoft
231. e size of your temporary database file by consolidating sparse free spaces similar to defragmenting a hard disk Verify Uses the built in verification feature on Microsoft SQL Server Compact Edition in order to check that all tables and indexes are not corrupt If verification result says the database is corrupted try the Repair menu Repair Should the Verify menu reported a problem on your temporary database this menu attempts to repair the file Backup Makes a backup copy of your temporary database To restore from this backup use the Restore menu Otherwise if you have deleted your temporary database go to chapter 29 1 2 Restore a Backup to reuse this backup file Replaces your current temporary database with a backup 29 13 Deactivate Offline Working To deactivate this work offline feature you need to go online It is a good idea to synchronise your main database server with your temporary database for the last time in order to make sure there are no pending data in your temporary database which have not been synchronised to your database server Then open the File menu gt Work Offline gt Delete Temporary Database Page 380 of 388 GCAS Desktop Manual Guide rev 14 i Change Database Reconnect Database re Export Data Ctril E Flush and Backup d Work Offline t i Go Offline Notification Log Sync then Go Offline Minimise to System Tray Maintain Ternporary Database Exit Delete Temporary Database Sync Now Wo
232. e textbox and the Submit button i e the comment grid fills up the entire form your user account may not have action permission to write comments or your user role is Read only Contact your GCAS administrator 7 10 Send to Correlation Calculator This shortcut is intended for unsupported GC or those in special needs For example your GC is C10 complete is actually calibrated with C10 calibration gas decane is present But later on your process gas is only up to C9 decane is missing This will mess up the correlation calculation R because the response factor of decane Is zero To workaround this problem open the Action menu from an open Footprint or Calibration Data form then select Send to Correlation Calculator Action Import Data Import Data CSV Import Data Manual Entry Set Status Add Comment Send to Correlation Calculator Print Preview Print 50 10723 This menu will send all response factor values from methane C1 to decane C10 to Correlation Calculator Only normal butane and normal pentane are included their isomers are not Once the Correlation Calculator form is open simply delete any unwanted gases and the calculator will get you the correct R result In our example before C10 device treated as C9 should have R of C6 C7 C8 C9 not C7 C8 C9 C10 In Correlation Calculator form delete methane ethane propane butane pentane and decane this will give you the correlation of hexane heptan
233. e which one is the most recent When a conflict happens this last modified information is either equal meaning that both records were updated at the same time or unavailable The probability you would find a record conflict is quite rare nevertheless a slim chance is not zero chance Page 375 of 388 GCAS Desktop Manual Guide rev 14 a Synchronisation Completed dA Synchronisation is complete However there were 22 record conflicts E When conflicts arise the sync progress bar turns yellow Click Resolve conflicts to see what records are conflicting The button brings the Resolve Conflicts dialogue similar to the screenshot below Conflicting fields are highlighted in yellow wl Resolve Conflicts Number of conflicts left to resolve 22 Decide which one of these records to commit to both databases Table name Response Factor Field name Online record Offline record Record ID _ po TT Timestamp 05 03 2014 11 28 05 03 2014 11 28 Device ID 43 FUEL GAS 43 FUEL GAS 1 02535E 07 1 02535E 07 Use online record Use offline record Repeat my action for all conflicts on the same table Response Factor To resolve one conflict click the appropriate button whether to Use online record or Use offline rec
234. ea TEESE E EAER 212 17 3 7 Send to ISO 6976 Trend CompariSoN ou cecesccesssessssesesesesessesecssessssesssesesssesesesesssesesesesessessseseeeesesees 213 17 3 8 Selection Mode MenUS ss sssessssesssesssessssssssesssesssessseessseosseesseesseesssrosseesseesseessseosseosstesseesseeossrosseessresseess 215 dg OTV 0 Fe GU a e a E Oe ena Teva Nunya en anne SEES 216 P3105 COMOUIDINIAG ASSISE AICO cisssiec sesh etic ceste Saaastiti ose asesbeeiecaste sae eassesasee Uaeesti ener aeese nities nies 218 16 Gorrelation Calculator as e aE aden a a nen nt oe eke 219 181 ING COMeIaHON Calculator TON rencrien na ticteasieenntiaten niet aveeicnetieneeetiaeneeae 219 Page 8 of 388 GCAS Desktop Manual Guide rev 14 182 RES CalCulator ena en enc an Sissies ee eee ia eee 220 To SAVY Gal UO oenar E T E E EEEO EOR 222 ISA Any CIAO C ACUO esen E EE E 223 19 1506976 Cal CU ater scissors cscs ase a E E E needs 225 1931 Thels0 6976 Calculator FOUN sciseiersineei iea E reeled tube Seti O EE 225 TQ Ways to EMerCompO SIO Mesene A EA A IA 226 POD Te Manua NDUT ssum a e A a ala 227 19 22 N rmalPasteana Smart Paste smesna ea ea a Ea e ea ee n 227 19 2 3 Load a Mole Composition Record scene 229 1924 Load a Calibration C erica tEn aa aa nea nee aO ee 229 1935 AANDETE ON aaa E E EE at E EEEN 230 T94 Compare TWO ISO 6976 Calculators osses a a SEE 230 20 1506976 Trend nosne e E E eeueseteawestedeewseeteed 233 201 TneS9 6976 Tena FOrMkoesen eanne n
235. eam MLC WDA Ta LE Methane kZ Lacie Test Test Be Ic Test6 From _ Equal scaling 14 June 20151430 Jr Test Mole fraction To Clear MLC cache 2015 1430 El Collapse all lt Remove Remove all zoom Average Methane comparison Device Stream 4Jun 14Jun 14Jun Jun 15Jun 15Jun 15Jun 15 Jun 15 00 18 00 21300 00 00 03 00 06 00 05 00 12 00 Each comparison entry has its own average bar or technically column as it is a column chart Showing or hiding a line chart through the Show check box in the comparison list also displays or conceals its average bar You can also zoom the average chart in case all bars are of the same height thus making it difficult to see the difference among them provided that the chart is in zoom mode 17 3 7 Send to ISO 6976 Trend Comparison Now that you have the mole composition trend of various devices or streams ever wondered how much calorific value each stream would stack against one another If you have the GCAS feature SO 6976 Trend included in your licence you see the button Send to ISO 6976 Trend Comparison is enabled next to Copy to Microsoft Excel button This button calls ISO 6976 Trend Comparison form and communicates the necessary information such as the plot range and content of the comparison list Then ISO 6976 Trend Comparison form handles the rest Because this Send to shortcut bypasses some of the ISO 6976 Trend Comparison s standard startup routines the ISO 6976 T
236. eature included in your GCAS licence you shall see an additional dropdown for ISO 10723 conversion This dropdown controls whether the underlying mole composition records should be converted to single point or to multilevel calibrated values prior to ISO 6976 calculation Note that non convertible records will produce gaps on the ISO 6976 trend chart In addition you can select Don t convert if you have a slow connection and you are confident that the mole composition records are all single point or all MLC Choosing this option will bypass all ISO 10723 prerequisites which usually takes a long time to load over a slow network Under the ISO 10723 dropdown there is a link named Compare both This link calls ISO 6976 Trend Comparison tool and tells it to compare ISO 6976 trend based on single point mole composition records versus the trend based on multilevel calibrated mole composition records It requires an additional GCAS feature Data Comparison Page 235 of 388 GCAS Desktop Manual Guide rev 14 20 4 Mean and Standard Deviations Data source and options Plot from 15 Jun 2015 09 41 Bly to 115 Jun 2015 13 41 alr floors to Fh Jih g Stream Records to plot 96 50 10723 conversion Convert to single point we Compare both Drag arectangleto Zoom _ Select 5134 125 ah po gt N ip F Mean and standard deviations are calculated based on all data points currently appearing on current ISO 6976 trend chart Tick th
237. ece Y B425R afl LF TEST Tick None Top 10 Bottom 10 C Remember my selections on this computer LLE ail Online Licensed device count mismatched Waiting for user to choose devices Page 52 of 388 GCAS Desktop Manual Guide rev 14 As an example meet Frank He is a talented GC specialist service engineer He bought a GCAS licence of 5 GC devices One day a customer called requesting his help to analyse problems on their GCs The customer exported part of their GCAS database to a Microsoft SQL server compact database and handed the sdf file to Frank Unfortunately this database has 8 devices When Frank changes database to this sdf file GCAS presents Choose Devices dialogue when the main window is being loaded As his licence only permits five GC devices maximum Frank must choose which five out of these eight to be visible during this session To see the other three Frank needs to restart GCAS to end current session and start a new session thus displaying the Choose Devices dialogue again This time he chooses the remaining three and optionally two out of the other five 4 3 1 Persistent Device Selection Device selection made through Choose Devices dialogue Is not persistent Next time GCAS Desktop is launched it presents Choose Devices dialogue again allowing you to select the other devices that were not visible during previous session Wg LENUS i DEMO4 i DEMOS Bg C10 for development
238. ecify whether the CSV file follows standard GCAS CSV template or a custom template More about this later 4 Import from GC device in database select a GC device and date range then RF offline converter will load all active footprints and calibration data of that device between that date range feel Add the average row Paste append Clear all MLC Single Point RF Offline Converter Input all multilevel calibrated RF values here entane n Pentane Hexane Heptane 0 24557326 0 24557356 0 24557405 0 24557312 024557377 024557392 024557408 024557323 0 024059924 024059956 024060002 024060014 024059933 024059984 024060024 024059975 0 0 301571 74 0 30157079 0 30157035 0 30157009 0 301571 0 30157192 0 30157189 0 30157205 0 27352363 0 027352566 027352497 027352594 027352532 0 2 7352452 027352391 027352333 0 0 0 0 0 0 0 0 0 0 Or import from CSV file Or use data from a device RF inputs This CSV file follows standard GCAS CSV template Import This CSV file has data starts at column 1 A having gas order of Previous Next Above the grid there is a check box called Add the average row This check box inserts a special row at the very top which contains the averaged value of all rows below it Average row will be converted to MLC or single point too depending on selected direction during the first page If you delete some rows or edit some rows
239. ed total to drop to 15 This number is close to 10 therefore GCAS assumes the scale is decimal 0 to 10 You know the GC reads the composition in percentage scale hence the decimal scale may hinder troubleshooting To override this automatic scaling browse to the desired mole composition record then open the Action menu Under Normalisation Scale select which scale to use Mole Composition form is now locked to the selected scale until it is closed Action a8 Spot Sampling Import Data CSV Set Status Set Status Bulk Send to ISO 6976 Calculator Add Comment Normalisation Scale Automatic ISO 10723 Fraction 1 Decimal 10 Percentage 100 Permillage 1 000 Bips Base Point 10 000 Percentmillage 100 000 PPM 1 000 000 PPB 1 000 000 000 mest used 8 9 Send to ISO 6976 Calculator Users whose GCAS licence includes GCAS feature SO 6976 Calculator shall see an additional action menu called Send to ISO 6976 Calculator This shortcut sends the mole composition record to ISO 6976 Calculator tool It calculates the calorific value CV and other properties of this composition Spot Sampling Import Data CSV Set Status Set Status Bulk Send to 50 6976 Calculator Send Single por nt Values Add Comment Send MLC Values Normalisation Scale ISO 10723 Page 104 of 388 GCAS Desktop Manual Guide rev 14 Users with SO 10723 feature included in their licences shall see two sub
240. ee 382 30 2 What Happened to Bug Report Wizard sessssssssssesssssessssssessssssesssessesssessesssessesssessesssessessseesssesess 383 Si GCAS Startiip Parameters sssini gaiarda aa a aaa E N 385 Page 13 of 388 GCAS Desktop Manual Guide rev 14 Revision Log Revision 14 Finalised on 12 October 2015 Based on GCAS Desktop version 1 8 1 0 Updated chapter 21 ISO 6976 trend comparison Inserted chapter 17 3 7 Send to ISO 6976 trend comparison Updated screenshots for few other chapters Revision 13 Finalised on 17 September 2015 Based on GCAS Desktop version 1 8 0 0 Updated chapter 20 ISO 6976 trend Updated chapter 15 Comments Revision a he Finalised on 26 August 2015 Based on GCAS Desktop version 1 7 4 0 Updated screenshots Renumbered chapter 27 to 31 GCAS startup parameters Renumbered chapter 26 to 30 Diagnostics and maintenance Renumbered chapter 25 to 29 Working offline Renumbered chapter 24 to 28 Export data Renumbered chapter 23 to 27 Administrator menu Renumbered chapter 22 to 25 Data capture Renumbered chapter 21 to 24 Device management Renumbered chapter 17 to 18 Correlation calculator Renumbered chapter 16 to 17 Mole composition comparison Renumbered chatper 15 to 16 Dashboard Renumbered chapter 14 to 15 Comments Updated chapter 1 13 in regard to ISO 10723 support Chapter 14 Uncertainty trend comparison is reser
241. eed to calculate lag time when they change the piping or the design of pressure letdown systems or when they replace the GC device The only module using lag time data is Data Analysis It is used when the user wants a mole composition trend then ticked Include spot samples By subsequently ticking Apply lag time all spot sample dots on the chart will shift to the right by the amount of total lag time Page 293 of 388 GCAS Desktop Manual Guide rev 14 24 Device Management A device is a representation of an actual physical GC device Device in GCAS database has several properties for example device name also known as device tag device type and device date format whether American or rest of the world format These properties should match the actual configuration of your physical GC device Managing devices are conducted through the Devices form Default installation of GCAS specifies only GCAS administrator and super users have access to this form Workspace C e One group has several workspaces e Workspaces are a way to separate devices in the same group This has been covered in chapter 3 2 Groups and workspaces e One device must belong to one workspace 24 1 The Devices Form Ce New Edit Delete ID Device Tag Name Op opa ae Oo are O 16 CaseStudy1 Daniel C7 complete y Daniel C7 complete Daniel C6 complete Daniel C7 complete KMS ABB C complete O 49ltestico ss Daniel C9 without
242. elected parameter is retention time RT They are very similar to RF chart types Page 122 of 388 GCAS Desktop Manual Guide rev 14 1 RT trend graphs the actual retention values over time in history The unit of measurement is second s 2 RT deviation trend graphs the deviation difference of RT values against footprints also in seconds s This also gives two further options e Each latest footprint Each RT value is compared against its latest footprint similar to RF deviation chart e This footprint only All RT values are compared against a particular footprint value The footprint to set as the comparison base is configurable through Change footprint link 10 2 2 3 Selected parameter R correlation Select chart type Correlation trend The chart will only show the actual value of R calculations This parameter is not compared against footprint values but against a low alarm limit The low alarm limit is configured in the Analysis Parameter form If it is not set the default limit 0 995 is used 10 2 2 4 Selected parameter MC mole composition Select chart type MC trend stream 1 T Include spot samples Apply lag time E Include calibration gas certificate ISO 10723 trend Single point compositions Compare both The chart will graph mole composition values of the selected stream Refer to the user manual of your GC device to know which stream numbers deliver mole percentage data Availab
243. en successful You can now open the CSV file eu Export data from GCAS database o The export was successful Click Finish to exit the wizard Show the file in File Explorer Previous Finish Cancel A quick note if you open the CSV file using Microsoft Excel Excel tends to truncate large number into scientific notation up to 2 decimal place the number of decimal place follows the regional settings on your Windows Control Panel This truncation may lead to large rounding error and is permanent As soon as you notice this Excel evildoing change the number format for the selected cells to general numeric format before you save the file Page 347 of 388 GCAS Desktop Manual Guide rev 14 H z Export 2014 02 06 csv Excel Za AX HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW DEVELOPER OFFICE REMOTE TEAM Yusuf Adriansyah 7 Th aii Calibri 1 JE a S ys Wrap Text Scientific K ia ey i em x ri A 7 Ay fai H Copy m Fill re gramatinius FM B AEE EEE Eegenen 6 ch 4 Contre Foata Cal meat Das omat G G sota a Clipboard F Font F Alignment E Number G Styles Cells Editing a O21 v fe 13492810 v A B C D E G J K L M N o P Q a 1 GCAS data export 2 Expor date 06 02 2014 16 20 3 Export range 01 09 2013 00 00 to 31 01 2014 00 00 4 5 6 7 FP_ID Timestamp Flag Status RF MetharRF NitrogeRF CO2 RF Ethane RF Propan RF i Butar RF n Buta
244. en the Action menu and select View Error Log Note if you are in unattended mode first click 5 Collapse button then deactivate unattended mode to see Error log button 25 2 7 Unattended Mode Unattended data capture is a data capture operation where all incoming data are committed to database or CSV files automatically It is intended for remote sites where engineers rarely present in situ while GCAS Desktop continuously captures data You can then leave the computer on and come back later to stop the operation The regular way to capture data as described in chapter 25 2 5 Start Capture and 25 2 6 Stop Capture is known as attended mode The table below summarises difference between attended and unattended mode Attended mode Unattended mode Incoming records await your decision whether Incoming records are committed immediately to commit or ignore You need to click Commit button or Save to Commit button Save to CSVs button and CSVs button in order to commit the records Clear grid button are not available in unattended mode You can review RF and RT records giving youa All records are automatically marked as time to change their flag either to footprint or calibration data calibration data Click the Stop button to stop operation Click the Stop button to stop operation or choose one of three available automatic stop triggers Page 317 of 388 GCAS Desktop Manual Guide rev 14 To activate unattended mode first
245. ent focus Switch to user view if you want to focus on the users i e how many groups one user has Switch to group view if you want to focus on the groups that is how many users one group has Assigning and removing users or groups are conducted through drag and drop operations Go to one of the subchapter below to use the form using a particular view 27 4 1 User View User view focuses on the users You see how many groups each user has Assign a group to a user Drag the group from left pane to the user Page 337 of 388 GCAS Desktop Manual Guide rev 14 User View Group View To assign a group to a particular user drag a group from the left pane to the desired user on the right pane GROUP LIST USER LIST x2 One group j 4 admin A Another group gE One group 4X Another another group 38 Another group g Another another group 4 User A ge One group 4 User_B gt One group 4 4 User_Readonly Another group To remove a group from a particular user drag the group under that user from the right pane and drop it here User View Group View To assign a group to a particular user drag a group from the left pane to the desired user on the right pane GROUP LIST USER LIST g One group A Another group A Another another group 4 4 admin g One group gt One group 4 4 User_Readonly Another group 27 4 2 Group View Group view focuses on the groups You see how many users each group has
246. ently used devices AFE 370XA DEMO1 Search device Pp H Q 2 Y Offline Ready We strongly recommend to close and reopen all open forms This is because each form retains a connection to GCAS database server but the disruption cut this connection Attempting to continue working on open forms may raise an error especially when there is a task to load or reload data from the database Page 370 of 388 GCAS Desktop Manual Guide rev 14 Please do not attempt to go back online should your network connection had not recovered Attempting to do so would make GCAS Desktop tries to connect to your main database server finds it failing and switches back to your temporary database Gas Chromatography Analysis Software demo O x File Profile Subscriptions View Comms Tools Window Help i No device selected j Vigilant New server Microsoft SQL v jh CASE STUDY BE CaseStudy1 by ES CaseStudy2 WE CaseStudy3 WE CaseStudy4 WE CaseStudys be ES CaseStudy6 v jp Demo WEJ DEMO WE 370XA DEMO By ES 8425R yf ES TEST APS UK21 1813 GCAS is unable to connect to i Vigilant central database Ay 2 370xA DEMO1 Message from the database provider A network related or instance specific error occurred while establishing a connection to SQL WEJ DEMO1 Server The server was not found or was not accessible Verify that the instance name is correct and that SQL Server is configured to BE DEMO2 allow remote connecti
247. ert you and propose a corrected selection area Nonetheless if you disagree with the new selection area click Cancel on the message box Mole Composition Comparison Gas to compare di ISO 10723 sample Show Devicetag Stream MLC Bre Test Methane EA Test Test6 _ Equal scaling Beet Test 14 June 2015 14 00 i Mole fraction bel Save Chart as Picture From To 15 June 2015 1600 m Copy Chart Image Clear MLE cache Zoom In Here Remowe all Generate Summary Here H Frame This Selection x dp tagoh Remove Frames Set These Records as Inactive Methane comparison liso Send to ISO 6976 Calculator Selection Averaged Deke Siream iso Send to ISO 6976 Calculator Entire X axis Averaged A i twa Send to ISO 6976 Trend Comparison A aT ae Mr CL Zoom All Out eae I ini bo vy ey Hide Crosshair Cursors Clear Selection Area 15 00 12 00 Show Values Show Legend Show Gridlines Zooms in to the selection area Generate Summary Here Generates statistical summary for the selected area Frame This Selection Literally puts a rectangular frame around the selection for presentation purpose This works on the average chart too Set These Records as Inactive Sets all records within the X axis range of the selection area as inactive GCAS Desktop displays an additional dialogue if your selection area covers several devices stream numbers Send to ISO 6976 Calculator This menu requires SO 6976 Calculator in GCAS licence
248. es such as negative composition However there is no check if sum of a composition record exceeds 100 because the record may be on a different scale not percentage If GCAS Desktop finds errors the problematic rows will display red exclamation mark on their headers and are highlighted in light red GCAS Desktop also refuses to move onto next page unless the errors are fixed Ultimately click Next to move onto next page and you shall see GCAS Desktop is doing its job performing ISO 10723 conversion It may take a while if you are converting hundreds or thousands of records When the conversion is finished you have options to Save as CSV Export to Excel or Copy to Clipboard The average row if ticked in previous page also appears in the conversion result at the Page 286 of 388 GCAS Desktop Manual Guide rev 14 very top However it is not the actual average of conversion results you see right now it is simply the MLC or single point conversion of the average value of all input rows before MLC Single Point MC Offline Converter Single point MC after conversion Note Compare Methane Nitrogen Carbon dioxide Eth Average Compare Compare Compare Compare Compare Compare Compare Compare Compare Compare Compare 24 9931091911 64 999999659 4 9659938246 5 011 7002855 4 9915632827 4 9885 416008 4 99222751269 84 992733165 4 9865345647 24 992880 7282 24 9998175 5 0032056677 9 9229463066 9 92 7349
249. eset all will reset all numbers back to zero Uncertainty Calculator Test3 Uncertainty from GC repeatability H INPUTS A _ a i l Uncertainties to include S dat bx CX dx X unnormmalised concentration of each component s standard deviation of unnormalised component Linearity Paste Resetall Choose existing coefficient set Reload set Editthisset New set be Mole percentage range Component Uncertainty from GC reproducibi Methane ISO 6976 inputs ce CALCULATIONS Carbon dioxide OUTPUTS Ethane H Summary Nitrogen Propane Uncertainty of CV ees Uncertainty of MW composition Uncertainty of Wobbe index gt n Butane Neopentane i Pentane Legend n Pentane Hexane SS 2oe eo ele ele e ae aels aia lalalalalalala Input editable Input from database Intermediary calculation Output Read only Recalculate F5 C Show intermediary calculations lt Previous page Next page gt Because these coefficients rarely change about once a year we suggest you to store these coefficients in database and recall them the next time you open Uncertainty Calculator form To store a new coefficient set click New set This link opens a blank Uncertainty Coefficients form and you type or paste the coefficient numbers there Visit chapter 12 to get detailed explanation of Uncertainty Coefficients form If GCAS Desktop detects there is at least one coefficient set in database GCAS Desktop loads the latest coefficie
250. evice specific and workspace specific overrides open Dashboard Settings then go to the rules tab Click Clear all overriding rules button at the bottom and finally finish it by clicking OK Page 202 of 388 GCAS Desktop Manual Guide rev 14 17 Mole Composition Comparison Mole Composition Comparison is a tool to compare trends of mole composition across different devices This module complements the Data Analysis module Through Data Analysis you see mole composition trend of various gases for one device now on Mole Composition Comparison you see mole composition trend of one gas for various devices Note This module requires two GCAS features to be included in your GCAS licence Live Data Analysis and Data Comparison 17 1 The Mole Composition Comparison Form To open Mole Composition Comparison form go to the Tools menu gt Mole Composition Comparison Mole Composition Comparison Sec oS Seo Sects Pore oes md a A AA i WLL _ Gas to compare Show Devicetag Stream MLC pee Bee 370XA DEMC gt Go Bebe 370XA DEME From papm 5R 06 August 2015 10 02 r pii Mole fraction To ae sent Clear MLC cache 07 August 2015 10 02 Equal scaling lt Remove Remove all i Mole Composition Comparison form has two resizable sections Parameters and device list are at the top while the comparison chart is at the bottom Page 203 of 388 GCAS Desktop Manual Guide rev 14 17 2 Parameters and
251. f why the record status was changed Comments tab does not open if your GCAS user account doesn t have action ULES to post comments Charts Tables Health status Comments _ 2 Refresh comment Date posted Comment gt 10 February 2014 08 55 12 Demo ooo 12 December 2013 09 13 38 Response factor of methane and COZ are too low Investigation needs to be conducted Posta new This calibration data was marked as inactive at 13 February 2014 15 29 Made this inactive to prevent it being included comment in Data Analysis form Submit 7 6 Incomplete Footprint or Calibration Data There are cases of incomplete footprint record or incomplete calibration data A footprint or calibration record is said to be incomplete if it has only response factor data or only retention time data but not both Incomplete records usually come from data capture operation but with additional configuration to ignore RF data or ignore RT data If GCAS Desktop was instructed to ignore RF data it assigns the special value 1 negative one to all RF values The same goes for RT which GCAS Desktop assigns 1 to all RT fields You shall see this special 1 value when you switch to table view on either Footprint or Calibration Data form Why 1 This value is used to differentiate the 0 zero value which indicates the gas is missing or not present in the calibration inlet By default GCAS Desktop will still plot zero values on RF
252. f your block of cells has one column GCAS processes a normal paste If it has two GCAS processes a smart paste Normal paste is like the Paste button on Microsoft Excel it pastes the cells sequentially Some safeguards are cells containing non number like alphabets will translate into zero and negative numbers are converted into positive Page 227 of 388 GCAS Desktop Manual Guide rev 14 So ISO 6976 Calculator H S gt z Input composition Mole A FILE HOME INSE composition Methane Calibri ore al B IU Carbon dioxide l Clipboard m Al E 1 L A 5 6 T 5 9 Paste Reset ny Use a mole composition record of 12 Demol 13 144 15 16 Smart paste works for two column data First column must be the gas name Second column is the value The good thing is you don t have to worry about gas order as GCAS Desktop will reorder the gases into the correct sequence GCAS Desktop recognises the standard gas names e g Methane Ethane i Butane as well as some well known names e g Isobutane Pentane translated as normal pentane or n Pentane and even their C number notation Gas names are not case sensitive Having said that these three blocks of cells below will work SO ISO 6976 Calculator Input composition Book Excel Gas name e HOME INSER
253. fic override level its radio button will be disabled Ultimately if no permissions are given you will not see Change MLC Constraints in the Action menu from the beginning Which override level should I apply to Be careful with the first option in Apply Constraints dialogue box Yes that option means you are changing the value of global constraints All other devices in the same GCAS database will use the new constraint values you just specified You are unsure whether the new constraints would Record level produce unwanted side effects on other records Some records are broken while some others are Coefficient level if those broken records use not the same MLC coefficients otherwise apply record level override to each of those one by one All records are broken but records on other GC Device level devices are not All records are broken regardless of what GC device Global they belong to A very ultra rare case Also check all MLC coefficient values for potential mistakes 22 5 2 Overriding Constraints for Mole Compositions Many operations involving multilevel calibrated mole compositions such as Data Analysis MC value trending uncertainty calculation and ISO 6976 calculation automatically load MLC constraints Their MLC constraint overrides are set through Mole Composition form Open Mole Composition form then browse to the desired record Or if you plan to apply coefficient level override browse to any
254. fications 1 Status bar notification Status bar notification is displayed on what else the status bar This kind of notification usually contains less important messages You probably see the message xyz form is busy most often when you attempt to close a form which was busy calculating Status bar notifications dismiss themselves after few seconds Search device OQ 2 al Online Data Analysis Form is busy 2 Tooltip notification Tooltip notifications contain only informational messages but GCAS needs to catch your attention It appears at the top left corner of work area Tooltip notifications dismiss themselves after few seconds View Comms Tools Administrator Window Help d Reconnection successful GCAS ts now connected to 101 255 90 246 3 Panel notification GCAS Desktop uses panel notification to ask your decision The notification is displayed at the bottom of work area Panel notifications have up to three buttons Click one of them to perform the appropriate action and dismiss the notification EL __ 7 i gt ah devie O D Q 2 sty GCAS detected the network connection has been restored Would you like to return online Go online Stay offline a Offline Ready 4 Overlay notification Possibly the most annoying one overlay notification is the black transparent window which covers the entire work area Overlay notifications interrupt your work therefore
255. g the spot sample values stay afar from the mole composition record Hence you cannot use it or it becomes more difficult to determine the health status of your pressure letdown system Lag time is calculated per stage and summed together at the end One stage is one configuration of pipes and regulators Typical pressure letdown system may have three to four stages which in turn makes typical lag time calculation has five or six stages in total Note This module requires GCAS feature Lag Time Calculator to be included in GCAS licence Page 289 of 388 GCAS Desktop Manual Guide rev 14 23 1 The Lag Time Calculator Form Lag Time Calculator form takes your stage data as input then calculates the lag time as output Lag Time Calculator form is designed for two uses offline calculation and device bound calculation Yet in current version of GCAS Desktop at the time this document is written version 1 8 1 0 the device bound calculation is not yet implemented For the time being Lag Time Calculator handles offline calculation only Offline calculation is one time calculation that is not tied to any devices in GCAS database Go to the Tools menu and select Lag Time Calculator Lag Time Calculator Global parameters Pressure letdown stages GC time Lag times Tesy SoTtE ool lec v Lag time seconds Lag time canonical Base pressure 1 01325 bar absolute Base compressibility 1 eg from AGA amp on STP Sample flow 0 0
256. ge I a EE i Include ISO 6976 calculation standard uncertainty 0 05 at the end ISO 6976 inputs g CALCULATIONS 2 OUTPUTS x Summary Uncertainty of CV Uncertainty of MW composition sn Jasegaini aiak handi l Legend Input editable Input from database Intermediary calculation E Output Read only Recalculate F5 C Show intermediary calculations Navigation buttons Uncertainty Calculator form and its parts The form contains 23 pages as laid out in the navigation tree Each terminal item links to its page within the form Click on any item below to read more about its part e Inputs o Uncertainties to include o Uncertainty from the calibration gas o Uncertainty from GC repeatability and linearity Repeatability Linearity Mole percentage range o Uncertainty from GC reproducibility o ISO 6976 inputs e Calculations normally collapsed o Uncertainty of calibration gas WRM RF and standard deviation Uncertainty of repeatability Footprint and calibration data Uncertainty of reproducibility Standard relative uncertainty Compressibility factor ISO 6976 calculation Sensitivity analysis Tor Uaiber gas and U reproducibility O O O O O O O Page 143 of 388 GCAS Desktop Manual Guide rev 14 o Sensitivity analysis for Urepeatability e Outputs Summary page Uncertainty of CV calorific value Uncertainty of MW composition Uncertainty of Wobbe index Uncertainty of relative density specific gr
257. ge 329 of 388 GCAS Desktop Manual Guide rev 14 2 Administrator Menu Administrator menu is available to GCAS administrators Look for the Administrator menu on the menu bar of main user interface Through this menu GCAS administrators manage GCAS users groups and access control list Note If your GCAS user account has a custom user type and your GCAS administrator granted the menu permission for Options for this user type you would see Administrator menu as well This implies you can manage users groups and optionally the access control list too 27 1 Manage Users Go to Administrator menu gt Users This menu displays the Users form which lists all GCAS users registered in this GCAS database JSETS pima 4 Y Search user Jel Role System Administrator Active Engineer 1 Engineer 2 27 1 1 Create a New User Click New button on the toolbar Define the new username and initial password Choose a user type and user role and finally enter the information for his or her user profile Finally click Save Page 330 of 388 GCAS Desktop Manual Guide rev 14 New Edit Login name Initial password User type User role User status Profile Full narne Email Fhone 7 12345678 Poccna Cankt lletep6ypr ET JlennHrpag O nact KWeBCKOeE wocce 124 Timezone Europe Moscow
258. hat gas 10 10 Other Visual Cues Enlarge chart area by hiding the parameters panel through the O Expand button To show the parameters panel again click 5 Collapse fe Data Analysis CaseStudy2 Device name CaseStudy2 Methane Ethane Propane and Heptane RT Error Trend e Methane RT difference Ethane RT difference Propane Ri difference Heptane RT difference Hover your mouse cursor over a data point to see its value Page 138 of 388 GCAS Desktop Manual Guide rev 14 Butane and N Butane RF Trend 18 000 000 i Butane RF 17 800 000 n Butane RF 17 600 000 17 400 000 17 200 000 17 000 000 16 800 000 16 600 000 i Butane RF at 13 November 2011 07 51 00 17 315 600 23 Oct 30 Oct 06 Nov 13 Nov 20 Nov r Nov 2011 2011 2011 2011 2011 2011 5134 Alternatively use the Show values button or right click on the chart and choose Show Values N Butane RF Trend 18 000 000 n Butane RF 17 811 300 17 803 100 17 613 700 17 600 000 17 5210 ns 541100 i 7 537 000 17 525 700 Neha 17 400 000 t7 457 000 17343 780 17 200 000 17 287 900 06 Nov 09 Nov 12 Nov 15 Nov 18 Nov 21 Nov 24 Nov 2 Nov 2011 2011 2011 2011 2011 2011 2011 2011 We don t recommend to show values on chart with many data points as the number labels may flood the chart area unless you have zoomed it in l Butane and N Butane RF Trend 13 000 000 E i Butane RF 17 811 200 17 8
259. he flag bit or convert the whole record Mark As changes the flag bit only The original numbers of all RF values are untouched Use this if you notice e MLC selector shows single point but the chart is horizontally flat and all numbers are close to one 1 0 Also when the selector is changed to multilevel calibrated the chart is still flat and all numbers become almost zero You need to mark the record as MLC e MLC selector shows multilevel calibrated but the chart is not horizontally flat and instead the numbers skyrocket to scale of hundreds of billions or even trillions Also when the selector is changed to single point the chart suddenly forms a nice ascending shape and the numbers now make sense You need to mark the record as single point Convert To changes the flag bit and converts all RF values thus changing the actual numbers stored in database permanently Use this when you see the record is good the numbers make sense which is completely opposite condition of when to use Mark As Because Convert To also converts the actual RF values you will get the desired numbers during data export For example you want to export footprint calibration data into CSV All records are marked as MLC If you go to export directly all RF values in the result CSV will also be close to one 1 0 as they were in MLC On the contrary if you use Convert To single point before the export RF numbers will be in scale of millions like typic
260. hen you are finished click Save or Save and add another to set up the new device inside GCAS database 24 1 1 2 Edit an Existing Device To edit a device tick the device on the grid then click the Edit button Make the change as required and finally click Save Visit previous section if you need help about how to edit a particular field You might need to click Refresh Devices on the main interface for the change to take effect P Edit Delete Edit Device Choose the group and workspace a this device belongs to Device tag name Select a workspace Device type A gt ge TEST4 ABB C6 without neopentane gt ge Test 2 ABB C7 complete gt ge TEST3 ABB C7 without neopentane a gh CASE STUDY Daniel C6 complete Daniel C6 without neopentane F Device date format om Tod Toy toH TaM Egi oj ol o0 paj 0 o EN E Of ami Cancel If you change the workspace the device will be moved into new workspace or even new group This is one way to reorganise devices however it moves only one device at a time To move multiple devices more efficiently visit chapter 24 1 2 Reorganise Multiple Devices Important You need to reconfigure modbus register mappings of this device if there s one defined for it when you change the device type Not doing so will cause many modules to display values under wrong gas names
261. here is a transaction ID a number at the beginning of every data packet travelling along the network When your GC device finished executing the command and ready to send back a response it must echo the same transaction ID at the beginning of response This is how Modbus protocol works as already defined in the Modbus protocol standard However some GC devices do not follow this standard Instead of echoing back the transaction ID they set the transaction ID to zero Because GCAS Desktop follows Modbus standard GCAS Desktop rejects this response and issues 0x00000086 error code To fix this problem you might have to upgrade the firmware of GC device Restarting GC connection won t help therefore it is better for GCAS Desktop to terminate connection Similar to automatic restart configuration highlight an error code and click Remove from list to remove the error code from auto terminate trigger list To add an error code select one from the dropdown list or type the error code in hexadecimal number and then click Add 25 4 Controlling Multiple Data Captures The Comms menu on the main user interface provides two shortcuts to control multiple data capture operations Connect to Device Ctrl 6 Register Mappings Advanced Preferences Start All Connections p Mow Stop All Connections P With Delay Start All Connections menu is a way to start multiple data captures simultaneously or with delay Stop All Connections menu will attempt to
262. hese are users who do not belong to any a Another ii rag here group To re assign these users fo a group 2 t R while holding drag the user from this list to the desired admin group on the left pane Ctrl key iia re 4 User_Readonly Page 339 of 388 GCAS Desktop Manual Guide rev 14 Remove a user from a group Drag the user under a group and put him on the trash bin icon Group View To move an existing user into different group drag the user to the new group To assign that user to multiple groups hold the Ciri key while dragging a gv One group 4 admin UNASSIGNED USERS 4 User_A These are users who do not belong to any 4 User_D group To re assign these users fo a group d JE ee ee drag the user from this list to the desired group on the left pane 4 User_Readonly gf Another another group Unassigned users If you remove the same user from every group she had she will appear on the list of unassigned users Group View To move an existing user into different group drag the user j a to the new group To assign that user to multiple groups aude aes vais ae iei hold the Cirl key while dragging nakr thd group from the left ne and drop them here a gv One group i 4 User_ A 4 User D UNASSIGNED USERS Another grou These are users who do not belong to any 3 group 4 User_Readonly group To re assign these users fo a group rime drag the user from this list to the desired g Another another group gro
263. i RF Neope RF i Pente RF n Pent RF Hexane RF Heptar RF Octane RI 8 Device Ai 9 i 01 01 2014 05 27 Footprint Active 1 11E 07 1 35E 07 1 59E 07 1 80E 07 2 30E 07 2 69E 07 2 80E 07 2 90E 07 3 08E 07 3 18E 07 3 36E 07 0 0 10 Device 61 7 11 2 13 01 2014 11 11 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 02E 07 9946967 1 15E 07 0 0 12 4 13 01 2014 11 23 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 02E 07 9946967 1 15E 07 0 0 13 5 13 01 2014 11 24 Calibration data Active 4325396 5080538 6093185 6820819 8427312 1 03E 07 1 03E 07 1 14E 07 0 0 14 6 13 01 2014 11 26 Calibration data Active 4213518 5137841 5908633 6852802 8413856 1 01E 07 1 02E 07 1 11E 07 0 0 15 7 13 01 2014 11 32 Calibration data Active 4177709 5185238 5996151 6813496 8369295 1 02E 07 1 04E 07 1 13E 07 0 0 16 Device B2 17 3 13 01 2014 11 20 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 02E 07 9946967 1 15E 07 x 0 0 18 Device A2 19 8 28 01 2014 08 08 Footprint Active 4283978 5148756 6032886 6790917 8432414 1 02E 07 9946967 1 15E 07 0 0 20 10 28 01 2014 14 18 Calibration data Active 4283978 5148756 6032886 6790917 8432414 1 02E 07 9946967 1 15E 07 f 0 0 21 11 28 01 2014 14 19 Footprint Active 4309686 5221769 6035713 7024046 8685369 9918244 1 03E 07 1 16E 07 il 0 0 2 23 24 x Export 2014 02 06 4 AVERAGE 1 22E 07 COUNT 27 SUM 3 30E 08 H 28 2 Copy to Microsoft Excel This exporter module opens a new Microsoft
264. ice on your device panel Page 67 of 388 GCAS Desktop Manual Guide rev 14 2 Open Footprint or Calibration Data form through the View gt Footprint menu or View gt Calibration Data If you import new data through Footprint form the imported data shall be marked as footprint If you import new data through Calibration Data form the data will be marked as a calibration data 3 Notice the Action menu on the menu bar To continue pick one of the supported import formats a Text import b CSV import c Manual entry 7 4 1 Text Import GCAS Desktop supports calibration report files generated by GC devices manufactured by Daniel Industries and ABB If you have the file open the Action menu and select Import Data If you don t see this menu your user account may not have the action permission for it or the Text Import feature was not included in your GCAS licence Contact your GCAS administrator Import Data CSV Import Data Manual Entry Set Status Add Comment Send to Correlation Calculator Print Preview Print ISO 10723 Load the data source file and select the appropriate importer module The importer module depends on the format of the file For example GCAS Desktop supports legacy Daniel report files Daniel 370XA files and Daniel 700XA files These three report files have different formats and are not compatible to one another therefore we include three Daniel importer modules to handle each of them
265. icence in order to use this feature Additionally this exporter also requires just one of these Microsoft Access 2010 Microsoft Access Database Engine 2010 Microsoft Access 2013 32 bit or Microsoft Access Runtime 2013 32 bit the 64 bit won t work to be installed on your computer Choose Export to MS Access to begin Page 352 of 388 GCAS Desktop Manual Guide rev 14 Se Export data from GCAS database Choose an export type ey g Export to C5V Copy to Excel Export data to a Microsoft Access database file Requires Microsoft Access 2010 or Microsoft Access Database Engine 2010 be installed mio e gt Tick all GC devices you would like to have their data exported j Platform A Al A2 j Platform B B1 Collapse all B2 a Platform C c1 C2 _ Renamed workspace Page 353 of 388 GCAS Desktop Manual Guide rev 14 Choose the data kind and a date range to export If you tick Also include records marked as inactive inactive footprints calibration data mole composition data calibration certificates uncertainty coefficients MLC coefficients and lag time data including comments for them if selected within the defined date range will also be included in the export eu Export data from GCAS database Choose what kind of data to export and the date range ea Range Footprints amp calibration data Mole compositions From 26 Juy 205 g _ Calibration certificate
266. id on the right is known as comparison list Hover your mouse pointer over a device to view more information about data availability and stream numbers In the screenshot below the device Test6 has only one stream number stream 1 ISO 6976 calculation is based on mole composition records hence devices which don t have mole composition records at all are displayed as semi transparent and cannot be added to the comparison list Oss Add devices to lst Select stream to compare ISO 10723 sample Show Devicetag Stream MLC eel Testi anf Daniel C complete Available data from 28 July 2014 16 45 to 14 July 2015 07 47 Available streams 1 gt To compare devices add the devices from the device tree view to the comparison list Either select the device then click Add or double click the device or drag the device and drop it onto comparison list Note An ISO 6976 Trend Comparison form which was opened via Send to shortcut from Mole Composition Comparison s Send to ISO 6976 Trend Comparison button or right click menu as well as through the Compare both link on ISO 6976 Trend form is locked to a certain number of comparison entries Device tree view is empty and you cannot add another device into comparison list The text above the Page 248 of 388 GCAS Desktop Manual Guide rev 14 chart should clearly indicate the form is locked Click Reset and reload device list next to this text in order to unlock ISO 6976
267. ide Ethane Total sur Spot Sampling a June 2014 08 30 00 Normalised 0 6123875 1 420029 1 275807 1 316855 0 820943 Page 95 of 388 GCAS Desktop Manual Guide rev 14 As you type the total sum is updated accordingly and all values are automatically normalised in the rightmost column The form deduces the correct scale automatically Therefore for a few first gases total sum for normalised column may display 1 mole fraction or 10 decimal As you fill in more and more fields the scale will change accordingly and typically end up in 100 percentage Always double check the numbers to avoid potential human error When you are ready click Save to commit the record Tip You can copy values from Microsoft Excel or other spreadsheet processing software Press Ctrl V inside the first text box and the rest will follow Alternatively click di Paste button Spot Sampling Device Test4 Dateandtime 04 June 2014 08 30 00 x Heptane Propane i Butane n Butane neoPentane i Pentane n Pentane Hexane Nitrogen Methane Carbon dioxide Ethane ca Unnormalised Normalised O x 0 12983 0 06183 0 05549 0 05202 0 05567 0 06596 0 06424 1 65817 90 12414 2 1769 9 45967 Cancel E H S 7 FILE HOME INSERT PAGELAYOUT FORMUL Tk a Calibri 1 A ip Bru Aan ZSZFZE Paste fs fh ca HH o Ay A E E
268. ies to find the device configuration if you have ever configured it before The configuration is stored in an XML file in Installation directory Mappings DeviceSpecific folder If the corresponding XML file does not exist implies that the device has never been configured the form loads the appropriate template The template being used depends on your GC device type Now you are ready to configure the register addresses for calibration data and for mole analysis data 25 1 2 Bit Length and Byte Ordering A standard Modbus register is 16 bits long or 2 bytes However a standard single precision IEEE 754 floating point representation requires 32 bits or 4 bytes Two Modbus registers are then used to output a single floating point datum The floating point standard dictates how the bytes in these two register be arranged to construct a 4 byte floating point value Bit length and byte ordering 16 bit Swap bytes C Swap all 32 bit O Swap words O Don t swap Several GC devices such as Daniel and Enron implement a non standard Modbus protocol extension which uses 32 bit Modbus registers or 4 bytes for each register GCAS Desktop supports these 32 bit registers as well Choose 16 bit to use standard 16 bit Modbus registers or 32 bit to use non standard 32 bit registers Depending on how your GC device is configured you need to match the byte ordering configuration on GCAS Desktop Select one of four byte ordering options e Sw
269. ight its row on the grid and then click Remove or press on your keyboard Everytime a comparison entry is removed from the comparison list its line chart is also removed However if you add it back you need to redraw the chart because its data in the cache has already gone This is the difference between removing an entry versus temporarily hiding it by unticking the check box inside the Show column In addition click Remove all to empty the comparison list and start over Note Maximum number of entries in comparison list is 15 entries Page 249 of 388 GCAS Desktop Manual Guide rev 14 GCAS Desktop will alert you if there are duplicate comparison entries A duplicate means same GC device same stream number same MLC single point switch if you have SO 10723 21 2 3 Start Graphing Go Clear MLC cache When you are ready click Go GCAS Desktop loads the required mole composition data calculates their ISO 6976 values and renders the chart The Go button turns into Refresh button unless you change the selected ISO 6976 output ISO 6976 properties comparison date range devices stream numbers or single point MLC switch Users with SO 70723 feature in their licences see an additional command link Clear MLC cache This clears the cache used by ISO 10723 conversion The cache contains MLC coefficients calibration certificates single point RF MLC RF and MLC constraints Click this link if you notice the ISO 697
270. ile device B has around 0 7 fraction scale Thus the line chart of device A flies high up there while device B lies low near the X axis To circumvent this problem Mole Comparison Composition form is equipped with scaling equalisation However it is not enabled by default The reason is most users have all GC devices Page 208 of 388 GCAS Desktop Manual Guide rev 14 generating mole composition records on the same scale or at least configured to output on the same scale Therefore scaling problems rarely affect GCAS users If you do compare devices with different scaling be sure to tick Equal scaling before you click Go Select one of four available scales fraction percentage permillage or parts per million PPM hart Sees ae L Lal fate Fie FA E gt Go Equal scaling Percentage My Clear MLC cache Continuing our example about device A and B with mole fraction scaling equalisation you are downscaling device A to fraction 0 to 1 while device B remains in fraction scale If you select percentage on this dropdown you are upscaling device B to percentage 0 to 100 instead 17 3 3 Zoom Mode and Selection Mode This toggle button controls whether the comparison chart is in zoom mode or selection mode Mole Composition Comparison wise ag aa and dato r i k Gas to compare di 150 10723 sample Show Devicetag Stream MLC Methane Ber Tn Test 1 O From i Test6 ka f Equal scaling 14 June 20151
271. ile memory storage where your GC device outputs the data to GCAS Desktop reads holding registers on your GC device therefore please configure your GC device to write the data to Modbus register 4xxxx On GCAS side configure GCAS Desktop to match those register addresses This is administered through Register Mappings form 25 1 1 The Register Mappings Form Select the device you would like to configure on your device panel on the main interface Then click the Comms menu gt Register Mappings To Configure Register Mappings Sao These mappings are for Bit length and byte ordering Import a configuration file O All C6 complete devices 16 bit Swap bytes C Swap all Browse Import Export current mappings to a file Live data analysis Read response factor _ Mark MLC Read retention time Registered mole composition Methane s 0 fl a Hexane s 22 streams Nitrogen w 2 l Propane w 24 Stream Registers Carbon dioxi w 4 i Butane s 26 Ethane s i n Butane w 28 Propane wy le neoPentane i Butane Wi i Pentane Tools shortcuts n Butane s 1 n Pentane 4 Shift all RF w by 10 000 to 10 00 neoPentane w Nitrogen Shift registers i Pentane Methane Add stream i l sae n Pentane Carbon dioxi Swap mole stream ee D Hexane i Ethane ti without altering register addresses 0 0 Swap stream number Cancel Page 300 of 388 GCAS Desktop Manual Guide rev 14 When the form opens it tr
272. imple Cancel For the first time GCAS Desktop lists all records within the last 24 hours To change the date filter choose Filter by date time and enter the desired interval If you choose Show all records this turns off the date filter and you see all records ever exist for this GC device since the beginning Click Refresh at the top right corner to apply the new date filter and reload the list At the bottom left corner there is a selection of available stream numbers Change which stream number to display on the record list then click Refresh to apply the stream number filter and reload the list Tick or untick records you want to have their status to change The Current status column displays current record status before the operation begins To view the record content click View record button available at each row That button opens a new Mole Composition form and loads that particular record In the example screenshot below there are 6 records to be set as inactive when you press OK button The rest those without check mark are left untouched thus their status remains active Page 100 of 388 GCAS Desktop Manual Guide rev 14 Set status to for these ticked records Hl Timestamp Stream Current status View record C 22 September 2014 16 52 1 Active View record _ X 22 September 2014 16 50 ver ist 22 September 2014 16 46 7 22 September 2014 1 11 40 wv Cl e2september201 T
273. in edit the user then set her status as Active Alternatively tick multiple users on the list then click amp Set as Active button on the toolbar 27 1 3 Delete Users To delete one or more users tick the user s you want to delete on the list then click Delete button on the toolbar Page 332 of 388 GCAS Desktop Manual Guide rev 14 Note You cannot delete yourself Ask another GCAS administrator to delete your user account to do so Warning If the user being deleted is still logged in on another computer deleting her account will cause errors on her computer Make sure she has logged out beforehand Deleting users will also delete all their comments in any footprint calibration data mole composition calibration gas certificate data analysis uncertainty trend and repeatability test records If you need to preserve their comments set them as inactive instead available only on GCAS Web version 27 2 Define New User Types and Roles Default installation of GCAS Desktop sets up three user types and six user roles Should you need to create another user type or user role you would go to the Administrator menu gt User Type and Role Definition Ta User Type and Role Definition User types User roles Mame Name System Administrator System Administrator Super User 2 Engineer 1 General User 3 Engineer 2 Partner Read only fal m os Click New to create one Click an existing user type or role and yo
274. in a wrong record Or you double post the same comment The only way to delete your comments is to contact your database administrator DBA and ask him her to remove your comments at database level Include Page 187 of 388 GCAS Desktop Manual Guide rev 14 your username the date and time when your comment was posted timestamp of the record for which the comment was written and the content of your comment in your enquiry Page 188 of 388 GCAS Desktop Manual Guide rev 14 16 Dashboard Dashboard is a place to see health status of all your GC devices in one place This helps if you have numerous GC devices across different workspaces like one in the screenshot below Health status of each GC device is represented by a small LED light on its dashboard tile To access dashboard go to the View menu gt Dashboard po e Z Refresh all Stop calculation Last refresh 15 21 about a minute ago sz Dashboard settings Q Help Customer X to R 0 9974 R 0 9947 30 Sep 2014 DA 01 Oct 2014 TPdev 02 ww R 0 9972 22 Oct 2014 Spare GC Demo1 w Demo2 C R no data R 0 9554 R no data No calibration data 06 Jun 2014 No calibration data R 0 9945 21 Sep 2014 A 15 Aug 2014 Each tile displays GC tag name light indicator and maximum 4 four health statuses Choose between 1 to 4 out of 8 available health statuses to display GC tag name Health status indicator u R 0 9977
275. inalisedon 6 October 2014 Based on GCAS Desktop version 1 3 0 0 Major changes in chapter 8 inserted subchapter 8 5 Updated chapter 12 Uncertainty coefficients Major changes in chapter 20 Agreements and Devices becomes Device Management Major changes in chapter 21 Data capture Updated screenshots Revision gt 6 Finalised on 20 August 2014 Based on GCAS Desktop version 1 2 0 0 Inserted chapter 11 Uncertainty calculation Mole composition comparison becomes chapter 15 Reserved chapter 12 Uncertainty coefficients for future release Comments is moved to chapter 13 Inserted chapter 14 Dashboard Updated chapter Correlation calculator formerly chapter 13 now moved to chapter 16 Reserved chapter 17 ISO 6976 calculator for future release Reserved chapter 18 Lag time calculator for future release Reserved chapter 19 for future release possibly for AGA 8 calculator Agreements and devices is moved to chapter 20 and all previous chapters afterwards are moved to chapter 21 onwards Revision 2 Finalised on 30 June 2014 Based on GCAS Desktop version 1 1 0 1 Updated GCAS Desktop system requirements Added chapter 1 4 4 Instant trial Updated chapter 7 4 3 Manual entry Inserted chapter 11 Mole composition comparison Reserverd chapter 13 Correlation calculator Updated chapter 15 1 5 What if my GC device Updated chapter 18 9 Conflict re
276. ion and ISO 10723 conversion To change certificate status open the Action menu and select Set Status or k Number If you do not see this menu your GCAS user account does not have action permission for it New Certificate Edit Certificate Set Status or k Nurmber Send to 50 6976 Calculator Add Comment This menu brings forth the Set Status and k Number dialogue where you can flip records status from active to inactive or the other way round Set Status and K Number E Certificate number CERT 0001 Install date 01 June 2014 Set status Set k Number Active C k 1 C Inactive O k 2 Cancel After you change the status Calibration Gas Certificate form will reload the record and displays the new status at the top region of the form It also switches to Comments and asks you to write a comment of why the status was changed Comments tab does not open in case your GCAS user account doesn t have action permission to post comments Page 116 of 388 GCAS Desktop Manual Guide rev 14 Ses it Change certificate ES Load latest certificate DEVICE NAME STATUS INSTALL DATE CERTIFICATE NUMBER Tests Inactive 01 June 2014 CERT 0001 Date posted Comment Post anew The record status of this calibration certificate has been changed to inactive at comment 37 June 2014 13 29 08 9 6 Change k Number Coverage Factor Use the same Action menu as the previous subchapter Set Status or k Number This me
277. is Scale a f Tt SERS LL Cit L i 3 P a 5 A di Display mean and 2 std deviations Records to plot 53 RF Mc RF trend ae oe Calculate x and p O RT O R _ RF deviation trend kel Save Chart as Picture Compute the deviation to l Copy Chart Image Select component i sig C All records o Each latest footprint What being Zoom In Here C Nitrogen This footprint only View summary E Carbon dioxide 08 November 2014 Drag a rectangle to H Frame This Selection Ethan ESFE T L aa ale F 5134 Caled all Change footprint Chart Generate Summary Here i Remowe Frames Set These Records as Inactive e Mark These Records as Single Point Mark These Records as MLC Send to 0 6976 Calculator Methane RF Trend Send to Correlation Calculator Selection Send to Correlation Calculator All Gases t Send to Mole Composition Comparison _ Zoom All Out Tx Hide Crosshair Cursors 3 Clear Selection Area tiv Reset Y axis Scale DE Set X axis Scale A Reset X axis Scale Reset X axis Tick Mark Format F Toggle Light Dark Background OF Mov 14 08 Nov 14 O08 Mov 14 09 Mov 14 09 Mov 14 12 PM 12 AM 12 PM 12 AM 12 Ph eee Values Show Legend Show Gridlines For Y axis specify the desired numeric range The input fields accept decimal values For example take the chart screenshot above and let us enter this range minimum
278. is check box to reveal the mean and twice the standard deviation lines GCAS Desktop cannot show mean and standard deviation lines for previous chart they are for current chart only Mean and standard deviations will not show if there are multiple ISO 6976 output trends in the chart ial ISO 6976 Trend Test6 o E Data source and options Plot from 15 Jun 2015 09 41 lr to 15 Jun 2015 13 41 ir ISO 6976 ISO 6976 rties SR PPE St 1 ne Records to plot 96 Calorific value Base pressure Son oy W Molecular weight atm i ISO 10723 conversion Convert to single point LC Wobbe index C Relative density C Standard density 15 C 15 C ne Display mean and 2 standard deviations View summary Drag arectangleto Zoom _ Select Device name Test6 Combustion metering temperature Compare both am ka Chat Comments CV Trend yina Next to the check box you see a link called View summary This link generates statistical summary for the entire X axis To generate summary on a certain portion of X axis switch to selection mode and use the right click menu instead Page 236 of 388 GCAS Desktop Manual Guide rev 14 Meo 150 6976 Trend Summary Summary from 15 June 2615 69 41 to 15 June 2615 13 41 Calorific value Mean 62 199255 MJ m Standard deviation 151151 Mean 2 std dev 62 501557 Mean 2 std dev 61 896953 Maximum 62 621678 Minimum 61 422186 Molar mass sum
279. is set to use register address 7300 In practice it uses register address 7300 and 7301 altogether Set the next gas nitrogen RF register to address 7302 Read response factor Mark MLC Read retention time l Heptane Mj face ol Propane w 7326 ol Nitrogen w 7302 ol i Butane w 7328 Carbon dioxi 7304 n Butane w 7330 Ethane mw 7306 neoPentane 7332 Propane w 7308 i Pentane w 7334 1 Butane vw 7310 n Pentane w 7336 n Butane s 7312 Hexane se 7338 neoPentane 7314 a Nitrogen w 7340 i Pentane s 7316 Methane w 7342 n Pentane w 7318 Carbon dioxin 7344 Hexane se 7320 Ethane w 7346 Heptane mw 7322 However in 32 bit Modbus one gas requires only one register There is no need to skip register address once every two like in the prior example Users with GCAS feature SO 70723 included in their licences see an additional check box at the header of response factor fields called Mark MLC This controls whether the incoming response factor data should be marked as multilevel calibrated or not Rewind to chapter 7 11 to read more about multilevel calibrated RF Tip To quickly define sequential Modbus registers enter the first register address then click Flash fill For example type 110 in methane response factor click Flash fill and GCAS Desktop shall assign 112 for nitrogen response factor 114 for carbon dioxide 116 for ethane and so on If you are on
280. is working Exit GCAS Desktop through the Quit button on the login form Run GCAS Desktop with an additional online parameter GCAS is now back in online mode Ui eS a a Log in as usual and now is the chance to set up your temporary database Type the name of a program folder document or Internet resource and Windows will open it for you Cancel 29 11 Online Offline Mode Persistence By default GCAS Desktop assumes online mode every time it is launched If you choose to work offline GCAS Desktop enters offline mode until you exit the software but returns to online mode on the next time you run the software again You can make GCAS Desktop stay in offline mode even after you exit GCAS To do so open Work Offline Preferences dialogue through the File menu gt Work Offline gt Work Offline Preferences Give a tick on Remember current state offline online for the next time GCAS is launched Page 378 of 388 GCAS Desktop Manual Guide rev 14 Work Offline Preferences Sync data in the temporary database from the last 12 months Stonng too much data in the temporary database will take more disk space and more time to finish a synchronisation process _ Automatically sync to central database server when go online Automatically switch to temporary database if network connection is lost Resume all modbus operations after a successful switchover Do a periodic check if GCAS can return online every 3 minutes
281. isplay one of the following Appearance Colour Meaning O GCAS Desktop is loading or calculating the data or Calculation was aborted through m Stop calculation button on the Black toolbar or All rules are turned off This should not happen no users should ever turn off every rule DE GC is not healthy At least one health status fails Yellow represents error state which is probably caused by One or more health statuses cannot be determined because some data Yellow was missing or Network connection to GCAS database server goes down or interrupted while calculation was in progress GC is healthy All health statuses pass GC has no data All health statuses have no data Users with colour blindness aami Simulated black red yellow green and white indicator in protanopia vision GCAS Dashboard does not include alternative colour scheme for users with colour blindness We apologise if this affects you Page 190 of 388 GCAS Desktop Manual Guide rev 14 Click Refresh to recalculate GC health status of all devices During refresh the Dashboard form displays a progress bar On slow network connection calculation of GC uncertainties may take longer time like half or one second per device You may abort this calculation via Oo Stop calculation button A healthy GC has a green tile and all health statuses are displayed using a green font If one health status or several fails the tile turns red and
282. isplays a link to change database Find the link near the top left corner below the database name ee uar Change database Username Password _ Remember me on this database untick on a shared computer This link brings you to the same Change Database dialogue Enter the required parameters e g IP address or server host name DBMS username and DBMS password Click OK and GCAS Desktop will restart After restart you see the new database displayed on the top of login form Choose which database GCAS should use i Vigilant central database O Corporate database O Local offline database i Vigilant Central Database The data i stored on Vigdant database server Select server oft SQL New server Microsoft SQL proxy Test connection Page 36 of 388 GCAS Desktop Manual Guide rev 14 2 5 Change Database without Running GCAS 1 On Windows Vista or 7 open the Start menu then go to All Programs Within Vigilant Technologies click on the shortcut Change Database di I Vigilant Technologies Change Database Zz Default Programs gs Change Licence GCAS Desktop di Maintenance di Microsoft Office Help and Support 2 On Windows 8 or 8 1 open the Start screen Change the view to All Apps view Scroll to the right find Vigilant Technologies and the same shortcut should be there i Vigilant Technologies 3 On Windows 10 open the Start menu or Start screen if you ar
283. it 2 T sepemper20 Tat 1 nerve once 10 records 6 selected n Ci ae P 22september201416a6 2 acie View record i u sone Veneen O Show all records C Filter by date time 22 Sep 2014 00 00 l to 26 Sep 2014 14 00 H Filter by stream number Add comment to each record Macro help Spot samples This record was set as NEWSTATUS at DATETIME 1 2 Click on the column header of the check boxes yes that one with a boxed check mark symbol to quickly check all or uncheck all records in the list Ei rrent status View record Timestamp z w fe september 20 i Z ES a record Click the column header to quickly tick all or untick all records Page 101 of 388 GCAS Desktop Manual Guide rev 14 You can also attach a comment to each record like what GCAS does in single record status change To do so give a check mark at Add comment to each record Then write your comment at the text box under the check box The same comment is applied to every ticked record when their statuses are being changed The comment box recognises five keywords called macro s which it automatically highlights in red Macro identifier starts with the symbol and is all uppercase GCAS Desktop replaces these macros with actual values before writing them into database Macro keyword Will be replaced with OLDSTATUS Previous record status active or inactive NEWSTATUS New record status active or inacti
284. it mode and reload the coefficient set from the database 22 4 3 Create New Coefficient Set From an open MLC Coefficients form open the Action menu and select New Coefficient Set This menu creates a blank coefficient set all zeroes with the timestamp set to current computer time Save Changes Set Status Begin entering the coefficient values one by one Be alert for potential human error Alternatively you can paste the coefficients from Microsoft Excel or other spreadsheet editing software as long as there are 4 columns and equal number of rows Click Paste to do so Page 267 of 388 GCAS Desktop Manual Guide rev 14 ia Edit mode MLC Coefficients Test6 i Browse another set bet Load latest set lal Save DEVICE NAME STATUS f DATE OF TEST Test6 Active 02 October 2014 g Edit mode Component Methane Nitrogen Carbon dioxide Ethane Propane i Butane n Butane Neopentane i Pentane n Pentane Display style Auto Number _ Scientific amp Description Don t forget to set the date of test This is the date information of when the multilevel calibration was conducted not the date of when the coefficients were entered Write the description It is a good practice to provide a description about this coefficient set When you are finished click Save button or go to the Action menu gt Save Changes to save these coefficients into database Otherwise to cancel all of these go to the Action menu gt
285. items as laid out in list box on the right Click an item on the right hand list and click Hide to remove this health status out of dashboard tiles The list box on the right also determines the Page 192 of 388 GCAS Desktop Manual Guide rev 14 order sequence of displayed health statuses Reorder the items through Move up or Move down button 16 1 1 1 Lowest correlation R of last calibration Depending on the device type the table below summarises how the lowest R is determined Lowest R is the lowest among these R values Daniel C6 C1 C2 C6 C3 C4 C5 Daniel C7 C1 C2 C7 C3 C4 C5 C6 Notice that lowest R for Daniel C6 and C7 devices is determined only by first two correlations The third correlation C1 C2 C3 C4 C5 C6 or C1 C2 C3 C4 C5 C6 C7 is ignored If the lowest R falls below the R threshold defined in the Analysis Parameter of a device typically 0 995 the tile for that device turns red 16 1 1 2 Uncertainties There are five uncertainty health statuses to display Uncertainty of calorific value CV is probably the most used among the others The calculation uses these inputs e Calibration certificate Configurable through uncertainty calculation settings tab If a device doesn t have any calibration certificates GCAS Desktop aborts uncertainty calculation for this device uncertainty health status on its dashboard tile turns grey and displays no certificate e Uncertainty coefficients This alwa
286. ith S are sensitivities As already explained in chapter 11 4 2 sensitivity for GC repeatability becomes identical to sensitivity of calibration gas and GC reproducibility if the mole percentage range is set to universal or individual mode What may be the interest here are the cells coloured in green For example let s use the screenshot above The screenshot tells us uncertainty of calorific value but the layout applies to other detail pages as well The cell at bottom right corner rendered in bold font is the CV absolute uncertainty or Ucy It has a unit megajoules per cubic metres MJ m If you want to see how much the CV itself is visit the ISO 6976 calculation page Note that not all ISO 6976 outputs have units look for the unit at the title label Relative density and Wobbe index do not have unit Above the absolute uncertainty is the combined expanded uncertainty This is Ucv expressed in percentage not in MJ m The percentage is measured against the CV again in the ISO 6976 calculation page Expanded uncertainty implies k 2 And there is also combined standard uncertainty which indicates k 1 Standard uncertainty is calculated using this formula Standard uncertainty 2 2 2 Uiga x Sages Cree x Srepearahuny U eproducibitity x Sreproducibitity where U and S are uncertainty and sensitivity respectively given that all uncertainties are included If you opt out the Ucal gas for instance the column U cal gas
287. iting if you are interested with the calorific value relative density or some other output of ISO 6976 calculation Sensitivity analysis calibration gas amp GC reproducibility This page displays the relative sensitivity of all ISO 6976 outputs for Ucalibration gas and Ureproducibility Sensitivity analysis GC repeatability This page displays the relative sensitivity of all ISO 6976 outputs for U repeatability Manual Mole Percentage Range If you selected manual mole percentage range for the calculation Of Urepeatability You need to enter mole percentage range on the WRM RF and standard deviation page The column turns white to indicate that it is editable Initial numbers on these columns are copied from your calibration gas certificate Enter a lower value for mole percentage low limit and higher value for the high limit On all options other than manual range these columns appears yellow and is read only Page 153 of 388 GCAS Desktop Manual Guide rev 14 Double click the cell or press F2 to enter edit mode Type the minimum value or maximum value then press to commit After you press Entex you should see all columns on current row to the right side is recalculated Urepeatability Is recalculated thus Usc and subsequent calculations also change Uncertainty Calculator Test3 Test3 as ee tests lol Mole s WRM response Standard elim Ss E gi Component deviation deviation p Linearity H minimum maximu
288. k Have Response Factor Read more about incomplete footprint or calibration data Response factor input has three options described below Response factor values are readily available RF data is the values you entered Response factor values are inverse of these values RF data is calculated from the reciprocal of the values you entered If you type 1 567E 7 for example the RF value will be 1 1 567x107 which is 6 381 621 rounded Use this option if your GC device uses the inverted formula that is mole percentage divided by peak area Response factor values are calculated from peak area This option shows two input fields for every gas First input field is for peak area as given by your GC device Second input field is for mole percentage as in the component data table or calibration gas certificate RF values are then calculated using the formula peak area divided by mole percentage o Mole fraction instead of percentage This option changes mole percentage input into mole fraction GCAS Desktop will convert mole fraction back into percentage at later stage Page 73 of 388 GCAS Desktop Manual Guide rev 14 Retention time input has two options and both are related to its gas order To make RT input fields use the same gas order as RF input fields choose Follow RF gas order This is particularly useful if you want to paste the numbers from your spreadsheet see tip box below but the gas order in your spreadsheet is different fro
289. ke to return online Go online Stay offline Piaae 109 2 Offline Ready As a reminder when you choose to go online make sure that all open forms have been closed You can reopen these forms later after the switchover b Automatically switch back to central online database GCAS performs another automatic switchover to online mode when possible This is particularly useful for unattended data capture If you choose this option all data capture operations will once again be stopped during the switchover Tick Resume all Modbus operations after a successful switchover to make GCAS Desktop resumes all data capture operations after entering online mode Special case if you also enabled automatic sync when returning online the sequence is temporary database sync comes first then data capture resumption takes place afterwards Page 373 of 388 29 8 Sync Error Log GCAS Desktop Manual Guide rev 14 During a database sync the process may stop when GCAS Desktop encounters errors Red progress bar indicates serious errors while yellow progress bar indicates less severe errors Click the Error message button to see more details about the error Synchronisation Error AS Error while synchronising databases P S A backup file was created before synchronisation process began Open backup Error message Close Error messages can be as simple yet fa
290. ktop Note This module requires two GCAS features to be included in GCAS licence Uncertainty Trend and Data Comparison Page 185 of 388 GCAS Desktop Manual Guide rev 14 15 Comments All user comments e g on Footprint form Calibration Data form Mole Composition form Calibration Gas Certificate form Data Analysis form Repeatability Test module only on GCAS Web Uncertainty Trend form and ISO 6976 Trend form are consolidated in the Comments form 15 1 The Comments Form To view user comments of a certain device select that device on your device panel and go to the View menu gt Comments Testa Filter by date of topic from 6 months ago Search pe Comment Fosted by Date posted Date of topic Footprint This footprint was marked as inactive at 11 June 2014 13 16 yusufadr 11 June 2014 15 16 43 Calibration data This record flag was changed from footprint to calibration data at yusufadr 11 June 2014 14 25 41 ne 2014 14 22 11 June 2014 14 25 Calibration data This record flag was changed from footprint to calibration data at 11 June 2014 14 28 01 ne 2014 13 44 isufadr 11 June 2014 14 25 Calibration data This record flag was changed from footprint to calibration data at 11 June 2014 14 24 59 ne 2014 13 37 rutadr 11 June 2014 14 24 Calibration data This record flag was changed from calibration data to footprint at yusuf O7
291. l or be automatically logged out for inactivity However please notice that the login form is in offline mode now A warning icon appears on the right side of Quit button We New server Microsoft SQL Help Change database Password _ Remember me on this database untick on a shared computer I an A Password We New server Microsoft SQL _ Remember me on this database untick on a shared computer GCAS could not connect to database server and switched into offline mode LOG IN ty AN During offline mode only users who already set up their temporary databases can log in Login form in offline mode behaves differently compared to normal online mode As in online mode GCAS Desktop is continuously connected to GCAS database server so that any login attempt is immediately verified against user credential in the database server However in offline mode the login form first checks if the user has his temporary database available then verifies the login attempt against credential stored inside his temporary database This is why users without temporary databases i e never set them up before cannot log in to GCAS Page 377 of 388 GCAS Desktop Manual Guide rev 14 In an unfortunate scenario where you have never set up your temporary database you would not be able to log in during offline mode You can force GCAS to return online and here are the steps to do SO Verify that your network or internet connection
292. le When click a tile Miscellaneous Open Footprint Calibration Data form My Device R 0 9967 UVI 0 1769 Fa 26 Oct 2014 28 Oct 2014 08 30 Cancel The misc tab configures other behaviours which are not categorised into the other four tabs Play sound when all calculations completed makes GCAS Desktop play a ding sound after all calculations completed On slow connection a dashboard refresh may take minutes to complete so GCAS Desktop can notify you that dashboard refresh is finished Auto refresh causes the Dashboard form to refresh itself once every the defined interval The default is 12 hours but you can change it between half an hour 30 minutes and 72 hours 3 days By default auto refresh is turned off If you turn auto refresh on and leave Dashboard open for a long time we recommend to turn off automatic logout on inactivity Open Dashboard window as soon as log in instructs GCAS Desktop to open Dashboard immediately after all workspaces and devices have been loaded This only works after GCAS login not after changing database or refreshing device panel When I click a tile select the action you want GCAS Desktop to do There are four options e Do nothing e Open Footprint Calibration Data form This action opens the footprint or calibration record who has the lowest R displayed on the dashboard tile e Open Mole Composition form This action opens the latest mole composition record assuming that
293. le point conversion only Per record override These constraints are enforced to this calibration record only Revoke this override Help Linear functions y a bx Linear functions have one real root However if it amp negative D Take absolute value to make it positive not recommended Reject the solution and set the result RF to zero Quadratic functions y a bx cx PEPE Quadratic functions may have two one or no real roots GCAS will always reject any imaginary F B root and negative real root However if both roots are positive Use the smallest one _ Use the largest one Cubic functions y a bx cx dx Cubic functions may have one two or three real roots GCAS will always reject any imaginary root and negative real root However if there are multiple positive roots Use the smallest one Use the largest one Which one From Use the one that yields result RF inside this range Use the one that yields result RF inside or closest to this range To ox As an example the screenshot above tells the calibration record is using record level override Now click Revoke this override to revoke it Confirm the message box and then the dialogue will reload the MLC constraints from one level lower Eventually it falls back to the global MLC constraints if there are no more overridden MLC constraints found You know it s already on global MLC constraints when there is no te
294. le stream numbers are determined from data that has been existed in database and also the mole composition stream definition in Register Mapping form If you know there is a stream number Page 123 of 388 GCAS Desktop Manual Guide rev 14 that is not on this dropdown list yet simply type the stream number on the dropdown box manually then click the Refresh button or press F5 You can also display spot sample records and or calibration gas certificate alongside the regular mole composition record on the chart Spot samples are displayed as triangles calibration certificates are displayed as bigger triangles while regular mole composition values appear as ordinary line charts Tick the corresponding check box to show or hide these special records Apply lag time is currently non functional In future version of GCAS Desktop where the device level lag time module has been developed this check box will shift all soot sample dots to the right according to the amount of calculated lag time Thus the triangle is closer to the regular mole composition line chart or even co incide This way you can see if the spot sample dot and the line is far apart in terms of Y axis value it indicates problems within your pressure letdown system Users with GCAS feature SO 70723 included in their licences see an additional dropdown selection ISO 10723 trend This dropdown contains three options Single point compositions converts any multilevel cali
295. log and error log If you run multiple data capture operations simultaneously each GC Connect form has its own error log and connection log Both logs are cleared when you close the GC Connect form To view the connection log open the Action menu and select View Connection Log Action View Error Log To View Connection Log Page 320 of 388 06 Oct 2014 12 13 32 06 Oct 2014 12 13 36 WO Wet 2 ee ee eee ae Information Poll GCAS Desktop Manual Guide rev 14 Connected to GC 000000000 Operation was successful new data received era i I i oo HO meL mara raed E m d g ee d a j Moo Click Show hide to filter which types of event to display on the connection log window Clicking a dropdown menu will toggle that filter to on or off If you tick Hide successful polls with no new data all polling events having 0x00000000 error code which indicates no error or a successful poll without new data will be hidden r a a O a oy ron rar KTS ALU ii LI ae 8 06 Oct 2014 12 15 24 06 Oct 2014 12 15 24 06 Oct 2014 12 15 24 06 Oct 2014 12 15 24 06 Oct 2014 12 15 48 06 Oct 2014 12 15 48 ll MX Show hide Information Information Information Information Pall Commit as successful new data received as successful new data received ction to GC Attempting to connect to GC This unattended data capture Starting a record commit background thread The record commit background th
296. low background to distinguish it from comments by other users Date of topic is an additional information of which calibration data footprint mole composition record you are writing your comment for thus other users know the correct data point to refer to Make sure that the comment is correct e g free from spelling errors because once submitted you would not be able to remove your comment This is a part of audit trail requirements The main ma Refresh button does also reload comments If you do not see the text box to write your comment i e you only see the comment grid view your GCAS user account doesn t have the action permission to write comment in Data Analysis Contact your GCAS administrator Page 141 of 388 GCAS Desktop Manual Guide rev 14 11 Uncertainty Calculation Uncertainty Calculation is a module to calculate the uncertainties of your GC device This is related to condition based maintenance which allows early detection of GC failures Method to calculate GC uncertainties is described in the journal article Sutan A and Daniel P Gas Chromatography Conditional Based Monitoring and Live Uncertainty Calculation North Sea Flow Measurement Workshop 2012 and Sutan A and Daniel P Gas Chromatography Maintenance using Uncertainty Based CBM The Americas Flow Measurement Conference 2013 Note This module requires GCAS feature Uncertainty Calculation to be included in your GCAS licence Uncert
297. lude standard calc uncertainty 0 03 View comments gt gt Start graphing gt This form has three pages Parameter page chart page and comment page The buttons at the bottom of the form do the navigation between these pages When Uncertainty Trend form is opened it shows the parameter page This page configures all parameters required to perform uncertainty calculation These parameters are Page 166 of 388 GCAS Desktop Manual Guide rev 14 e Uncertainties to include e Calibration certificate e Footprint reference e Uncertainty coefficients e Mole percentage range e ISO 6976 parameters e Direction e Plot range available if Uncertainty of GC repeatability is ticked Each parameter is explained in chapter 13 2 After all parameters are set correctly click Start graphing and GCAS Desktop will start the calculation Note Uncertainty calculation is slow because it loads many different data from database Moreover uncertainty trend calculation is a sequence of many uncertainty calculations Depending on how wide your plot range and how many calibration records inside the plot range one trend calculation may take from few seconds to ten minutes or even more Fast CPU and good network connection between your computer and the database server help reducing the calculation time 13 2 Uncertainty Trend Parameters This chapter explains each uncertainty trend parameter 13 2 1 Uncertainties to Include
298. ly 2013 17 56 and 24 June 2014 09 30 Select footprint AX 31 July 2013 17 56 Until today Uncertainty of repeatat 2 Footprint and calibratic ry Change range start Eye Cha nge range end Uncertainty of reprodu H Standard relative uncer Compressibility factor 0 6976 calculation Sensitivity analysis OUTPUTS lt Legend Input editable Input from database Intermediary calculation Output Read only Recalculate F5 Show intermediary calculations Previous page Next page gt Select a footprint as a reference You can see all footprints through Footprint form If you choose a footprint that happens before the certificate installation date GCAS Desktop displays a A warning icon Next decide how many calibration data to include in the calculation GCAS Desktop offers three choices e Until GCAS bumps into next footprint The selected footprint itself and all calibration data up to one last calibration before next footprint are included in the calculation of U reproducibility e Until today The selected footprint itself and all calibration data including subsequent footprints and all their calibration data afterwards all the way to this very moment i e current computer time are included in the calculation of Ureproducibility e Custom range You can choose from which calibration record exactly to which calibration record that are included in the calculation Of Ureproducibility A YW star indicates a fo
299. m LoadGroupsAndDevices About to load groups and devices 11 Aug 15 16 32 Main form LoadGroupsAndDevices Number of devices in database 18 11 Aug 15 16 27 32 Main form LoadGroupsAndDevices Number of devices permitted by 11 Aug 15 18 2 Main form LoadGroupsAndDevices Found 2 groups 11 Aug 15 1 Main form LoadGroupsAndDevices Group CASE STUDY Found 6 devices 11 Aug 15 1 LicenceUpdater Automatic update timer started Next 11 Aug 15 11 icenceUpdater CheckForUpdateNow Manually checking ee ee L Main form LoadGroupsAndDevices Group Demo Found 15 devices 11 Aug 15 Main form LoadGroupsAndDevices Number of GC loaded so far 18 11 Aug 15 186 Mai LoadRecentDevices Recently used devices have been loaded Recent device IDs 163 11 Aug 15 Aut 1 update No new licence 11 Aug 15 1i 11 Aug 15 lf 11 Aug 15 18 Lu k nE k e d gt RAM memory allocated for GCAS 30 59 ME RAM used by reference type objects 3 26 MB You can minimise or close the diagnostic window at any time The diagnostic window continues to output debug information even after it is closed To show the window again go to the Diagnostics menu gt View Log Window G Gas Chromatography Analysis Software demo ee File Profile Subscriptions View Comms Tools Window Help Diagnostics aan ES View Log Window cA J No device selected aif Refresh GCAS Settings l ee 4 Me CASF STUDY A To s
300. m i Mole percentage ra Uncertainty from GC re ISO 6976 inputs CALCULATIONS Uncertainty of calibrati WRM RF and standard Uncertainty of repeatat minimum maximum factor deviation Methane 4327 89 401 0 0 Nitrogen 0 0541 0 0541 0 0 Carbon dioxide 0 1312 0 1312 0 0 Ethane 0 0610 0 0610 0 0 Propane 0 0554 0 0554 0 0 i Butane 0 0492 0 0492 0 0 n Butane 0 0561 0 0561 0 0 Neopentane 0 0651 0 0651 0 0 i Pentane 1 6651 1 6651 0 0 n Pentane 2 2029 2 2029 0 0 Hexane 5 7488 5 3488 0 0 Footprint and calibratic Uncertainty of reprodu H Standard relative uncer z Compressibility factor ISO 6976 calculation Sensitivity analysis 3 OUTPUTS Legend Input editable Input from database Intermediary calculation Output Read only Recalculate F5 lt Previous page Next page gt Note Manual mole percentage range is not balanced The sum of low limit may be less than 100 and the sum of high limit can be more than 100 11 4 2 Regarding Sensitivity Analysis Starting from GCAS Desktop version 1 3 1 0 GCAS Desktop calculates two sensitivity sets One for Ual gas ANd Ureproducibility aNd the other for Urepeatability Sensitivity of calibration gas and GC reproducibility is based on the mole percentages in your calibration certificate Sensitivity of GC repeatability is based on the average between mole percentage lower bound and upper bound range If you chose universal mole percentage range or individu
301. m 1 MLC 0 754496 Compressibility Zmix 0 9908281589 0 134945 Calorific value 65 9672385906 0 025495 Molar mass composition 29 8108079882 g mol Wobbe index 64 7422113565 Relative density 1 0382012587 Output Compressibility Zmix 0 9907945873 Calorific value 66 0688353252 MJ m Molar mass composition 29 8586515292 g mol Use a mole composition record of Wobbe index 64 7888537447 ae Relative density 1 0399027083 Standard density 1 3445139498 This is the SO 6976 Comparison form It compares all ISO 6976 outputs between the two calculator forms Left column is the ISO 6976 Calculatorwhich initiated comparison let s call it A The right column is the ISO 6976 Calculator selected as comparison target let s call it B Then you get the delta difference which is A minus B and finally the delta expressed in percentage relative to A Units in ISO 6976 Comparison form follows the ISO 6976 Calculator like the CV is still in MJ m Test 14 07 2015 Test 14 07 2015 07 47 stream 1 07 47 stream 1 single MLC Page 231 of 388 GCAS Desktop Manual Guide rev 14 GCAS Desktop displays a warning if the two ISO 6976 Calculators did not have the same base pressure and combustion metering temperature pair Correct the mistake in the ISO 6976 Calculator parent form click Calculate on the parent form to recalculate using the new pressure or temperature value and fi
302. m the default sort order Tip You can copy numbers from Microsoft Excel or other spreadsheet processing software Press Ctrl V on the first text box and the rest will follow Alternatively click di Paste next to the corresponding input field series Manual Data Entry H S9 7 Device Test4 FILE HOME INSERT Pi Footprint timestamp x ails 27 June 2014 B 09 3407 tk oo eke sid HE r Paste ERIE SS Have Response Factor g B U L Response factor values Clipboard M Font are readily available Al z are inverse of these values i 4 B C _ are calculated from peak area 1 3 307 243 2 6 845 964 re 3 7 868 788 Nitrogen RF 6 845 964 7 5 110 795 956 7 6 13 987 499 CO RF 7 868 788 gt 13186711 Ethane RF 8 328 458 amp 14 935 288 9 15 199 155 Propane RF 10 795 956 10 15 207 122 i Butane RF 13 98 7 499 7 11 17 604 465 Euan EF 13 186 711 12 ee 13 Neopentane RF 14 935 288 14 i Pentane RF 15 199 155 Ls 16 n Pentane RF 15 207 122 17 y 18 A Always double check for typing errors before clicking 19 Click Hide options link near the the top right corner to hide both option panels and to make larger room for the input fields Always check the numbers and also the timestamp before you click Save Once it is saved the record is not editable Page 74 of 388 GCAS Desktop Manual Guide rev 14 7 5 Change Record Flag and Status 15 1 Change Record Flag
303. menus One will send normalised single point composition while the other will send normalised multilevel calibrated composition Users without SO 10723 see no submenus the menu itself will send normalised single point composition For more information about ISO 6976 Calculator visit chapter 19 Normalised Normalised Stream 2 Component percentage percentage single pt MLC Propane 0 9100 0 9103 i Butane 0 1741 0 1743 Ady n Butane 0 2307 0 2304 150 neoPentane 0 0055 0 0054 Input composition Pressure anc i Pentane 0 0894 0 0896 TES Mole i Base a D itane composition 1 01 323 bar BE Meth Nitrogen 3 1264 3 1488 Methane 90 609915 Combustion metering temperatu re Methane 90 8699 90 8296 Nitrogen 3 126432 oc OFC ae CO 0 6015 0 6032 Carbon dioxide 0 601507 thane 3 6865 3 7019 Ethane 3 686471 Calculate ee Propane 0 909997 i Butane 0 174098 n Butane 0 230686 Neopentane 0 005549 i Pentane 0 029445 n Pentane 0 081982 Hexane 0 223916 Output Value Unit Compressibility mix 0 9972152989 Calorific value 41 0118416706 MJ m Molar mass composition 17 7839820148 g mol Wobbe index 92 2000 700731 Relative density 0 6153840308 Standard density 0 7956440610 kg m Heptane ALLEL L Paste Reset Use a mole composition record of Test 8 10 Miultilevel Calibrated MC ISO 10723 GCAS Desktop supports the traditional single point mole compositions as well as multilevel calibrated MLC mole co
304. mment such as This record status was changed to inactive at lt current computer time gt for bulk status change in simple view Use advanced view if you want to attach comments to these records To switch into advanced view click Advanced button Page 99 of 388 GCAS Desktop Manual Guide rev 14 8 6 2 Advanced View Advanced view gives more flexibility to set record status for multiple records In advanced view GCAS Desktop gives a list of mole composition records and you tick which ones to change status Set Status for Multiple Records Set status to inactive for these ticked records Refresh Ml Timestamp Stream Current status View record 26 Septernber 2014 13 55 2 Active View record 22 September 2014 16 52 Active View record 2 September 2014 16 50 2 Active View record 22 September 2014 16 46 Active record 22 September 2014 11 40 Active View record 22 September 2014 11 11 Active View record 19 September 2014 14 08 Active View record 19 September 2014 14 01 i Active View record 19 September 2014 13 54 i Active View record 19 September 2014 13 46 Active View record 19 September 2014 13 45 Active View record 43 records 43 selected M Ka O Show all records Filter by date time 14 Sep 2014 07 00 El to 01 Oct 2014 22 45 gr Filter by stream number Add comment to each record Macro help ee This record was set as NEWSTATUS at DATETIME 1 S
305. mouse cursor over the dots Otherwise switch to table view On table view MW is the molecular weight in gram per mole Page 62 of 388 GCAS Desktop Manual Guide rev 14 Charts Table Health status Comments Component RF RT MW Nitrogen 2 936 591 40 23 28 01340 Carbon dioxide 3 603 466 95 80 44 009530 Ethane 4 049 306 222 00 30 06904 Propane 3 498 922 43 65 44 09562 n Butane 3 948 029 79 63 58 12220 i Butane 3 942 288 70 80 58 12220 n Pentane 4 893 218 161 25 72 14878 i Pentane 4 762 046 137 95 72 14878 Hexane 3 400 630 23 03 26 17336 Table view Special value 1 If you see 1 negative one for all RF values in this table view this means the footprint does not have response factor data This record may come from data capture operation but with an additional configuration to ignore incoming RF data Similarly if you see 1 00 for all RT values the footprint does not have retention time data Read more about incomplete footprint record Retention time chart behaves differently for Daniel C9 C10 GCs and ABB GCs Daniel C6 C7 devices have one detector and thus have a certain sort order and is constant ABB devices have two detectors and Daniel C9 C10 have two ovens thus the sort order does not apply because the sequence of analyte gas coming out from one detector is independent from the sequence of the other detector In this case the RT chart is sorted by value You can show bar charts from both detectors from
306. mpare both section C Standard density 15 C 15 C v C Display mean and 2 standard deviations Drag a rectangleto Zoom Select 2X e t 4 Chat Comments CV Trend 62 60 62 40 62 20 Chart 62 00 section 61 80 61 60 61 40 10 00 11 00 12 00 13 00 20 2 ISO 6976 Properties ISO 6976 outputs ISO 6976 properties Calorific value Base pressure W Molecular weight 1 9 a D Wobbe index Combustion metering temperature Relative density _ Standard density 15 C 15 C v Page 233 of 388 GCAS Desktop Manual Guide rev 14 Check boxes on this list controls which ISO 6976 outputs to show Typically only one output is displayed because values of one ISO 6976 output are far apart from other ISO 6976 outputs Set the base pressure and the combustion metering temperature pair These properties are used to calculate ISO 6976 outputs throughout the entire plot range Default base pressure is one atmospheric pressure There are six combustion metering temperature pairs supported O C 0 C IaC OG 25 C70 15 C7 T5 20 C 20 C 25 C 20 C 20 3 Plot Range and ISO 10723 Conversion Data source and options Plot from 15 Jun 2015 09 41 ly to 115 Jun 2015 13 41 lr Records to plot 96 50 10723 conversion Convert to single point Compare both _ Display mean and 2 standard deviations View summary Drag arectangleto Zoom Select por R
307. mpositions Note This feature requires SO 10723 feature in your GCAS licence Users with SO 10723 feature on their licences will see two columns when Mole Composition forms is loaded for the first time First is normalised single point composition second is normalised MLC composition Unlike multilevel calibrated RF multilevel calibrated mole composition MC have values close to its single point counterpart The difference between single point and MLC mole composition is usually called bias ISO 10723 conversion for mole composition requires Page 105 of 388 GCAS Desktop Manual Guide rev 14 1 A multilevel calibration MLC coefficient set installed before the timestamp of the mole composition record and 2 An active MLC convertible calibration data or footprint before the timestamp of the mole composition record which in turn requires 3 A multilevel calibration MLC coefficient set installed before the timestamp of this footprint calibration record and finally 4 An active calibration gas certificate installed before the timestamp of this footprint calibration record If one or more of these conditions are not met the mole composition record is said to be not convertible GCAS Desktop displays a A warning icon at the bottom of the form below the pie chart if One or more of the four conditions above are not fulfilled or 2 The MLC coefficient set used by the mole composition record and coefficient set used
308. n and uncertainty health statuses shall bear an asterisk symbol on them How many calibration data to include Pick one of the choices e From footprint to today the default takes the footprint itself all calibration data afterwards all subsequent footprints and all subsequent calibration data after them all the way until current computer time Page 196 of 388 GCAS Desktop Manual Guide rev 14 e Latest x days default x 30 takes all calibration data counted down from today to today minus x days Nevertheless if GCAS Desktop bumps into a footprint within these x days GCAS Desktop stop travelling backward and instead takes that footprint plus all calibration data until today e Follow last uncertainty configuration causes GCAS Desktop to follow last uncertainty configuration of each device including custom calibration data range if you have set them through Uncertainty Calculator form beforehand 16 1 4 Display Style Ei Dashboard Settings Health status to display Display style Rules Precision 4 Uncertainty calc settings For uncertainties show me combined expanded uncertainty Display style For date information show me Absolute date dd mmm yyyy hh mm Miscellaneous Bold font on the device name My Device wW R 0 9967 LCV 0 1769 i 26 Oct 2014 28 Oct 2014 08 30 Cancel Display style tab configures the appearance of dashboard tiles Precision Select how many decimal digits to display o
309. n entering numbers in the previous chapter go to the Action menu and select Edit Certificate If you do not see this menu you may not have the action permission for it Contact your GCAS Administrator Set Status or k Number Send to ISO 6976 Calculator Add Comment This menu brings forth Edit Calibration Certificate form which is the same form as New Calibration Certificate but its function now is to correct mistakes in the numbers Correct every wrong value and then click Save Edit Calibration Certificate ce C mS Device Test6 Certificate number 14 1035 04 Issue date 12 November 2014 lr Minimum pressure 3 Bar Install date 10 December 2014 lr Min temperature 13 C Expiry date 11 November 2019 Al Cylinder number k Mole percentage Absolute uncertainty Methane 54 548 0 06 fil Nitrogen 141 X 0 005 Carbon dioxide 3 33 6 0 008 Ethane Pa 0 046 Propane i Butane n Butane Neopentane Cancel Page 115 of 388 GCAS Desktop Manual Guide rev 14 Although you can use Edit Calibration Certificate form to change the certificate install date this can trigger unwanted side effect If another certificate has already existed on the same date GCAS Desktop will use whichever stored first in the database 9 5 Change Certificate Status Every certificate record has a status bit indicating whether the certificate is active or inactive GCAS Desktop will not use inactive certificates in uncertainty calculat
310. n numeric health status lowest R and uncertainties The default precision is 4 digits However if you opt to show both types of uncertainties i e expanded and absolute GCAS Desktop can only display 2 digits For uncertainties show me Select which type of uncertainties to display This setting applies to uncertainty health statuses Most users prefer combined expanded uncertainty expressed in percentage over absolute uncertainty expressed in units such as MJ m for CV There is also a choice to display both however GCAS Desktop can only fit 2 decimal digits due to space limitation For date information show me Select date format to display This setting applies to date of last calibration and date of last mole composition record The default is absolute date which shows the exact date month year and also hour minutes for last mole composition record The other choice is rough relative timespan like 3 days ago or 5 hours ago Bold font on the device name makes the device tag name on dashboard tiles use bold face Look at the preview tile at the left side of this dialogue box to see if you fancy the bold font Page 197 of 388 GCAS Desktop Manual Guide rev 14 16 1 5 Miscellaneous ney Dashboard Settings Health status to display Miscellaneous Rules _ Play sound when all calculations completed 3 i Auto refresh every 12 0 hours Uncertainty calc settings C Open Dashboard window as soon as log in Display sty
311. n required GCAS requires a valid licence to run Please enter your licence now Computer code 18AB 1747 771C Registration name ACME Inc Registration key 123456 N Acticin 4 Registration name is your customer identifier name as you have entered during checkout process on our website For offline purchase we will send your registration name This name is case sensitive requires exact spelling 5 Registration key is six numeric digit and doesn t start with zero This key is available on the confirmation page and my account page for online purchase or in our confirmation email for offline purchase Page 22 of 388 GCAS Desktop Manual Guide rev 14 If you purchased GCAS Desktop through an offline channel such as PO or direct meeting Tell us your computer code either by email fax or phone Our email address is support i Vigilant com Wait for our confirmation that we have successfully generated your licence If you purchased GCAS Desktop through our website You don t have to tell your computer code because your licence is generated automatically at the time of first activation As long as you entered correct registration name and key case sensitive and you haven t exceeded your activation count licence generation will work without problems Type your registration name and registration key then click Activate Provided that all data were correct this window will show Licence retrieved However GCAS
312. n you click OK GCAS Desktop presents you another dialogue asking which override level these new constraints are about to be applied Apply these constraints to Everything These constraints are applied to all records of all devices in this GCAS database This device only These constraints are applied to all records of this device only Test _ This coefficient set only View coefficients These constraints are applied to any records of this device which uses MLC coefficients of O2 October 2014 This record only These constraints are applied only to this specific calibration record From top to bottom each radio button corresponds to global constraints device level coefficient level and finally record level Make a decision then click OK The Footprint or Calibration Data form will reload the record and you may see the RF chart is now different from the previous one If not try another constraint values Page 270 of 388 GCAS Desktop Manual Guide rev 14 Note Each option in this dialogue box requires its own action permission The GCAS administrator has authority to assign which user roles can change global constraints device level coefficient level or record level For example an administrator may prohibit regular users to change global and device level constraints but permit them to change coefficient level and record level constraints If your administrator didn t grant you permission for a speci
313. nally click Refresh on ISO 6976 Comparison to re compare AX These two have different combustion metering temperatures Refresh Test 14 07 2015 Test6 14 07 2015 07 47 stream 1 07 47 stream 1 MLC single Z compressibility 0 992355 0 001527 0 154 percentage Page 232 of 388 GCAS Desktop Manual Guide rev 14 20 ISO 6976 Trend ISO 6976 Trend is a module to plot historical ISO 6976 output values over time This module should not be confused with Uncertainty Trend which graphs the uncertainty of ISO 6976 outputs ISO 6976 Trend takes a collection of mole composition records and performs ISO 6976 calculation on each of them using the same parameters and finally displays the trend on a line chart Note This module will require GCAS feature SO 6976 Trend to be included in your GCAS licence 20 1 The SO 6976 Trend Form Select the desired GC device on device panel or recent device panel and then go to the View menu gt ISO 6976 Trend Similar to Data Analysis ISO 6976 Trend form has three sections parameters chart and comments iso ISO 6976 Trend Test6 gt E e Data source and options Device name Test6 vad E _ Plot from 15 Jun 2015 09 41 E to 15 Jun 2015 1341 Gv ISO 6976 outputs ISO 6976 properties aT Calorific value Base pressure Stream 1 a atm v ISO 10723 conversion Convert to single point v Parameter C Relative density Combustion metering temperature Co
314. nas pene antyeter ne bescren Ont age ice stpaNTs gem nro ote anv nO OER nN ren eer NTN ee eee 198 T162 OVENMOING RUGS tte eine ie wien ncaeie edness nee ness ero neneneinas 199 T6 2 1 Per Device OVEA G araceectactencracectenee tenants wen attene tastes EAT ONET OER TON 199 1622 Per Workspace OVemide nenastane a 201 16 2 3 Revoking Cancelling an Override ss sssesssesssesssoesssesssesssessseesssessseosseessessseessseossresseesseeossrossresseesseess 202 17 Mole Composition Comparison cccccccccccccsscccccccccccccscccccccsccssccccccsscecccscccsssccsscccsccsscesssssseeecs 203 17 1 The Mole Composition Comparison FOr c csccsessssssesessssssccsesesessesesessesssessesescssesesccsesesssesesesesessseaeeseseees 203 Vise Parameters and Device Listosrar eanna elected ede ees 204 za Gas and Date RINGE ieni E a atest beat cstontteadtanedestanueuan 204 H22 Devices AVC Compan OPN US Teaia a a A aie ad 204 W FEP a etry LIC En woe TUS EN DeC ESCM T Mace MORN Tan SeavE TM Tan entre eran ona euae 206 AWW es sammie 0 0 6 gc pve g neem nee eee a E E ESEE IEEE EEEIEE 207 V3 1 SROW Or Hide Some DEVICES soresoni enine n vie stevetele T T 208 Thae Saip Egualdi Neser e ONN EN 208 17 3 3 ZOOM Mode and Selection Mode uu esssssssssssssessssessessssssesssessesesessesssssesssessesesessesssessessseesessseseeseess 209 kaoa SNe COPY DECI ee E ES 211 Io Epor Values to MITOSO EXCEL irosino rintra nE R AE EO O 212 13 0 Compans OT AV Cl AG ESen aie
315. ncluded in the export S gt we Export data from GCAS database Choose what kind of data to export and the date range er Range Footprints amp calibration data Mole compositions From 26 July 2015 _ Calibration certificates 10 August 2015 E _ Uncertainty coefficients Multilevel calibration coefficients Lag time data _ Also include records marked as inactive Comments Page 345 of 388 GCAS Desktop Manual Guide rev 14 Set the destination CSV file Set the destination file Change file C Users ryang_000 Desktop Export 2014 02 06 csv Review the export settings and click Next to begin the export process ee I D eu Export data from GCAS database Review that all of these are correct and click Next to begin the export operation Export type Export to CSV GC devices to export devices show Data to export RF RT mole composition Date range 01 September 2013 to 31 January 2014 Include inactive records No Destination file gt C Users rvang_000 Desktop Export 2014 02 06 csv GCAS Desktop commences the export operation For CSV export this step is typically very fast unless the number of records to export is way too many Page 346 of 388 GCAS Desktop Manual Guide rev 14 erg Export data from GCAS database Export operation is in progress Counting records 10 records found Previous This wizard page confirms that the export has be
316. nd combustion metering temperature pairs These parameters are used for all data within the plot range Default base pressure is one atmosphere or 1 01325 bar GCAS Desktop supports six combustion and metering temperature pairs which are e 0 C 0 C e 15 C 0 C combustion temperature 15 C base temperature 0 C e 25 C 0 C e 15 C 15 C e 20 C 20 C e 25 C 20 C Page 173 of 388 GCAS Desktop Manual Guide rev 14 13 2 6 Direction Direction of calculation What s this Forward Minimum number of calibration data after footprint to start graphing ka O Backward Trim at footprint Direction of calculation determines which calibration records to include in the calculation Uncertainty calculation may go forward or backward On forward direction list of calibration data to include is counted from footprint For every calibration data in the plot range calculation Of Ureproducibility at that point will include all calibration data from the last footprint including the last footprint itself and accumulatively go forward up to that point Footprint Footprint T July 2014 1 December 2014 E I l o l l k i T I m I I I I l l EENE l Po Calibration i records in use I i l l Date Jul Aug Sep Oct Nov Dec Jan Feb Mar 2014 2014 2014 2014 2014 2014 2014 2014 2014 This picture ts animated in the HTML version of GCAS Desktop Manual Do not co
317. nd paste or an existing record Page 226 of 388 GCAS Desktop Manual Guide rev 14 19 2 1 Manual Input Go to the input composition grid Press F2 or double click the cell to invoke edit mode Then type the numbers There is total row at the bottom of the grid You might need to scroll the grid or resize the form This total row is updated everytime you finished editing a cell fisol ISO 6976 Calculator Input composition Pressure and temperature Mole Base pressure Gas name composition 1 01325 bar Methane 280353 Combustion metering temperature Nitrogen r c ba Carbon dioxide Ethane Calculate Propane i Butane n Butane Neopentane i Pentane Output Value Unit Compressibility Zmix 0 997 797532 Calorific value 36 8213536030 MJ m n Pentane Hexane ee Molar mass composition 13 4115704697 g mol Wobbe index 48 059320292 Relative density 0 58 700831 2 Standard density 05996750159 kg m te LLE aste Reset Use a mole composition record of Test Take extra care about the gases your GC device doesn t read For example a C7 device has no octane nonane and decane Some GC devices do not read neopentane too Set the composition of these unavailable gases to zero Click Reset to reset all numbers back to zero 19 2 2 Normal Paste and Smart Paste Copy a block of cells from Microsoft Excel or your favourite spreadsheet processing software then click Paste at ISO 6976 Calculator form I
318. ne Uncertainty of MW cor Soe Uncertainty of bind Neopentane E 8889 8 i Pentane Legend n Pentane _ Input editable fel Input from database Intermediary calculation Output L ow Show intermediary calculations lt Previous page Next page gt l d ae EERE manm h You can also load a coefficient set stored in database If you already loaded a set for GC repeatability it also loads for GC linearity Go to page 146 to read more about loading a coefficient set from database Page 148 of 388 GCAS Desktop Manual Guide rev 14 11 3 3 3 Mole Percentage Range Uncertainty Calculator Test3 Mole percentage range El INPUTS Uncertainties to includ Uncertainty from the c 5 Uncertainty from GC re Methane Nitrogen Ethane Propane z Repeatability 20 00 19 00 18 00 17 00 16 lt Plus minus range Assume universal range of 20 00 Set individual range z _ Manual range Uncertainty from GC re _ 7 ISO 6976 inputs tA Use Z standa rd dewiation range of mole composition ower this period for all streams CALCULATIONS OUTPUTS 02 Jun 2014 00 00 to 14 Aug 2014 11 19 pissin Mais Balanced gas Methane Uncertainty of MW cor Uncertainty of Wobbe gt Legend Input editable Input from database Intermediary calculation Output Read only Recalculate F5 C Show intermediary calculations Previous page Next page gt Choose how the mole pe
319. nfuse the last footprint in the previous paragraph with the reference footprint Reference footprint is set on this section The last footprint only marks where the collection of calibration data begins Reference footprint and last footprint may co incide but that is not always the case You can pin any footprint as a reference but uncertainty calculation in forward direction uses one last footprint before every single dot on the chart Actually it uses the timestamp of last footprint in order to query calibration records from the timestamp of last footprint to the timestamp of the current dot being calculated There is a minimum limit to start calculation The default is one 1 which means forward calculation can start at one calibration data after every footprint within the plot range You can set the minimum Page 174 of 388 GCAS Desktop Manual Guide rev 14 for example ten so the calculation starts after 10 calibrations following every footprint You will see a gap on the chart after every footprint indicating the number of dots within those gaps is below the minimum limit therefore calculation could not start On backward direction list of calibration data to include is counted from the calibration data being calculated For every calibration data in the plot range calculation of Ureproducibility at that point will include all calibration data from that point and go backward to the last x days or last x record before tha
320. ng Mole Composition Records as Inactive 1000 1050 1100 1130 1200 12350 13 00 Zoom All Out 62 6 ki Save Chart as Picture p m Copy Chart Image 20 624 H cid 2 Zoom In Here j 62 2 j Tir Generate Summary Here oe phi i J JA J fie Compare Averages Selection ji N fe Compare Averages Entire X axis 61 8 j i Frame This Selection Remove Frames 61 6 I x Hide Crosshair Cursors Clear Selection Area Show Average Show Values Show Legend Show Gridlines 21 3 4 Export Values to Microsoft Excel Above the chart located at the rightmost button click k Copy to Microsoft Excel This button opens a new Excel worksheet Then GCAS Desktop writes all data points of all line charts available onto this worksheet Note This feature requires Microsoft Excel 2010 2013 2016 or later to be installed GCAS Desktop prevents you from exporting to Excel if there are duplicate comparison entries Every device or stream in comparison list has its own column and the rows are timestamps If there are two or more data points from different devices or streams sharing the exact same timestamp they are merged into one row in Excel worksheet Page 254 of 388 GCAS Desktop Manual Guide rev 14 H S5 Sheet Excel 2 mb x FILE HOME INSERT PAGELAYOUT FORMULAS DATA REVIEW VIEW TEAM Yusuf Adriansyah gy Fa Conditional Formatting 7 Insert 2 Aw Ah p F z if Format as Table g Delete
321. ng the pressure letdown system hence the name spot or if the process gas is delivered in gas tank canister then the sampling method is administered straight on the canister The purpose of spot sampling is to verify if your pressure letdown system works properly no leakage no condensation no dropout etc If the soot sample record is very close to the regular mole composition record taking the lag time into account then generally soeaking your pressure letdown system should be fine To enter spot sample data select the device from the device panel then open the Mole Composition form through View menu gt Mole Composition Open the Action menu then click Spot Sampling Page 94 of 388 Action ri GCAS Desktop Manual Guide rev 14 Spot Sampling Import Data CSV Set Status Set Status Bulk Send to ISO 6976 Calculator Add Comment Normalisation Scale ISO 10723 This brings forth the Spot Sampling form First thing first enter the date and time of when the sample was taken Once the record commits to database you cannot change its timestamp but you can set it as inactive and re enter a same record with the correct timestamp The next step is to key in mole composition value of each gas The composition you are entering now is the unnormalised composition Device Test4 Date and time O4 Heptane Propane 1 Butane n Butane neoPentane 1 Pentane n Pentane Nitrogen Methane Carbon diox
322. ngle point mole compositions versus CV based on multilevel calibrated mole compositions To do so first graph ISO 6976 trend with ISO 10723 dropdown set to single point Next change the ISO 10723 option to multilevel calibrated and hit Refresh to graph the ISO 6976 trend on MLC Finally click 2 Show previous chart button Current chart dark blue is the CV based on MLC compositions while previous chart light blue is the CV based on single point compositions Page 238 of 388 GCAS Desktop Manual Guide rev 14 Mise ISO 6976 Trend Test Ege aE Data source and options Plot from 13 Jun 2015 11 25 Sly to 13 Jun 2015 15 25 ale Device name Test6 ISO 6976 outputs ISO 6976 properties Stream Records to plot 96 Calorific value Base pressure _ Molecular weight atm et ISO 10723 conversion Convert to multilevel calibrated KA C Wobbe index L Relative density Standard density ec sis C Display mean and 2 standard deviations Combustion metering temperature Compare both View summary Drag a rectangle to Zoom Select Chat Comments CV Trend Previous CY CY Example of a bad GC Current CV dark blue ts based on multilevel calibrated compositions while previous CV light blue is based on single point compositions If these two drift too far apart this indicates problems within the GC A good GC should have these two be really close or even co incide Be reminded that only one previous cha
323. no permissions are given you will not see Change MLC Constraints in the Action menu from the beginning Which override level should I apply to Be careful with the first option in Apply Constraints dialogue box Yes that option means you are changing the value of global constraints All other devices in the same GCAS database will use the new constraint values you just specified Condition Recommended override level You are unsure whether the new constraints would Record level produce unwanted side effects on other records Some records are broken while some others are Coefficient level if those broken records use not the same MLC coefficients otherwise apply record level override to each of those one by one All records are broken but records on other GC Device level devices are not All records are broken regardless of what GC device Global they belong to A very ultra rare case Also check all MLC coefficient values for potential mistakes Page 273 of 388 GCAS Desktop Manual Guide rev 14 22 5 3 Revoking Cancelling an Override Open MLC Conversion Constraints dialogue again through Change MLC Constraints submenu in ISO 10723 in the Action menu Next to the blue info badge you shall see what override level the record is using If no text is displayed then the record is still on global MLC constraints MLC Conversion Constraints RF b E Set constraints to filter out bad solutions MLC to sing
324. nt set automatically for you However if this is not the coefficient set you want you can change which coefficient set in the database to load Click Choose existing coefficient set then GCAS Desktop displays the familiar Select a coefficient set dialogue Page 146 of 388 GCAS Desktop Manual Guide rev 14 Select a coefficient set Time Status 03 October 2014 First set qq d Page 1 w of 1 Filter Options List all coefficient sets Entries per page 30 C List coefficient sets between 30 Mar 2014 Sort Newest te oldest 03 Oct 2014 Oldest to newest Show Any status Cancel Hover your mouse over the list item on its date column to reveal a tooltip about the description of the coefficient set Due to NET Framework limitation tooltip can only appear at the first column Click OK or double click the list item to load the coefficient set You can edit the coefficients after you load them from database too Just go to the cell double click or hit F2 to invoke edit mode and enter the correct number However this change is only temporary as it is only used in current session of uncertainty calculation If you need a permanent edit you have to use Uncertainty Coefficients form then either create a new coefficient set or edit the existing one Click Edit this set to open Uncertainty Coefficients form and invoke its edit mode This link is only available if you haven t changed any numbers since the coefficie
325. nt set is loaded from database To undo all changes and revert back to the original coefficients from database click Reload set 11 3 3 2 GC Linearity Formula displayed on this wizard page is very similar to GC repeatability 2 x3 s a bx cxi dx However the s here is different from the previous s This formula is used to calculate the standard deviation of mixture gas and sample gas The coefficients a b c and d here are called response concentration coefficients or parameters of true calibration functions Similarly you need to enter these response concentration coefficients on the provided data grid Double click the cell or press F 2 to enter edit mode Alternatively you can paste from Microsoft Excel Page 147 of 388 GCAS Desktop Manual Guide rev 14 or other spreadsheet processing software as long as there are 4 four columns and equal number of rows Uncertainty from GC linearity El INPUTS Pa P 3 Uncertainties to includ s at bx CX dx Uncertainty from the c a b c d response concentration coefficients parameters of true calibration function a Uncertainty from GC re x normalised mole fraction of each component Py s standard deviation of normalised component Repeatability Enter these response concentration coefficients Paste Reset all i Mole percentage ra Component Uncertainty from GC re ISO 6976 inputs ff CALCULATIONS Carbon dioxide OUTPUTS 2 Summary Fropane Uncertainty of CV i Buta
326. nu calls the Set Status and k Number dialogue then choose the new k value Certificate number CERT 0001 Install date 01 June 2014 Set status Set k Nurmber Active k Inactive k 2 After you click OK the form reloads the certificate and recalculates absolute uncertainty values according to the new coverage factor Page 117 of 388 Mole Absolute Component percentage uncertainty Methane GCAS Desktop Manual Guide rev 14 Absolute Component uncertainty Methane Nitrogen Carbon dioxide 00st a a preme e am Calibration certificate on k 1 left and k 2 right Data ts fictional 9 7 Insert Comment If you need to put notes or other properties that were not supported by New Calibration Certificate form post them in comments Comments User ID Comment comment Open the Comments tab or go to Action menu gt Add Comment Write your comment on the text box at the lower section of the form then click Submit 3 Make sure the comment Is correct e g free from spelling errors because once inserted into database you will not be able to remove the comment If you do not see the textbox and the Submit button i e the comment grid fills up the entire form your user account may not have action permission to write comments or your user role is Read only Contact your GCAS administrator Page 118 of 388 GCAS Desktop Manual Guide rev 14 9 8 Send to
327. o C Use the middle one if there are three or largest if there are two _ Use the largest one Change the constraints as necessary by paying attention to which gas that causes silly values followed by which degree of polynom the MLC coefficients of that gas is Click OK and GCAS Desktop presents the familiar Apply Constraints dialogue box Select an override level and hit OK again to commit Page 272 of 388 GCAS Desktop Manual Guide rev 14 Apply these constraints to C Everything These constraints are applied to all records of all devices in this GCAS database D This device only These constraints are applied to all records of this device only Test This coefficient set only View coefficients These constraints are applied to any records of this device which uses MLC coefficients of 02 October 2014 This record only These constraints are applied only to this specific mole composition record Note Each option in this dialogue box requires its own action permission The GCAS administrator has authority to assign which user roles can change global constraints device level coefficient level or record level For example an administrator may prohibit regular users to change global and device level constraints but permit them to change coefficient level and record level constraints If your administrator didn t grant you permission for a specific override level its radio button will be disabled Ultimately if
328. o what has been set in Windows Control Panel using current page setup default is A4 portrait fa amp p 0 0pm B cose Calibration Data Test Page 1 of 2 o Calibration timestamp Footprint timestamp l vizii auz 14 April 2015 14 57 14 April 2015 14 28 Response Factor 5 334 495 i Pentane 66 385 Hexane 62455 Propane 17 747 030 i Butane n Butane neoPentane Retention Time Response Factor ng Pon Rng tg Rig ag Ag Me C1 C2 C6 C3 C4 C5 C1 C2 C3 C4 C5 C6 R 0 9929 R 0 0408 7 5 7 s 6s 6 ac Print preview dialogue GCAS Desktop has different print layout for portrait and landscape orientation GC health status and user comments are printed on subsequent pages Page 89 of 388 GCAS Desktop Manual Guide rev 14 8 Mole Composition Mole composition formerly mole percentage is a record of as its name suggests mole composition of either calibration gas or process gas in one chromatography cycle Note In order to use features related to mole composition e g Mole Composition form mole composition data capture and mole composition data analysis you need GCAS feature Live Data Analysis in your GCAS licence Early versions of GCAS Desktop only recognises mole percentage but now GCAS can work with any scale We generalise mole percentage fraction or whatever scale it is into one name mole composition From this chapter onward the term mole composition
329. oP ee oer re 90 8 2 VIOW GAG ENA LO LU op lt 16 6 oo seen ener ENOn mentee nT Ent E a 92 8 3 Import New Composition Data siirsmissiicsicrinieaai oi a ee eE eee 92 8 4 SPOT SIMPING aera TA aAA 94 8 5 Change Record Status Single Record ses esseesssessseessessssesssessseesserosseesstesseessseosseossresseesserossresseesseesseeoseee 97 8 6 Change Record Status Multiple Records cc esssssssssssssessssssessessseesssesessssessesssessesssessesssessesssssesssesseeesess 98 8 6 1 SIDISE V EW esnan a A a E O N 99 8 6 2 BON OEV eean a a Hr VE TITOUnT TON SPIVE Cun tunT Ca ewet toe 100 8 7 Heert COmMent n aa a A 103 8 8 Automatic OM FIXCO SCIE eee a a a O OS 103 8 9 sena ToS O69706 C IUO iene cscs a E ETE E E E E 104 8 10 Muiltilevel Calibrateda MC ISO 107 23 sect ccsfoccectiec cxcidestoelteeid eavechadesdicsbiencidvsiocd denl sastdvobuasisehi aassoobueideroies 105 SIO mg ECO f ft 5 kOe re ern ep etre oie tinct tint tet Penn ef ne fem eT ere ese 107 8 10 2 Mark As versus Convert 1O ccccnenaremannncceman aciainai ean aiaw A eae 108 O03 Change MLC Flag Bit M ltiple Records sosirosssencsectucococetug r pnn n a R e OR 108 9104 IVICA INS Tant aeieea EE E E A E E E usted ber dna 110 9 Calibration Gas Certificate secccs sesso secicecsseeceess rioei o earn iano oaea oaa ees apaa ieo raa TORni 111 9 1 TRG eCGUDIGHON Gas CeHHINCGLe FOr tansan aa ciara coat eo ia aco aac ces 111 9 2 View PREVIOUS COMUTGAL CS es ssrcis ccs aac east pearl
330. oceed 2 Click Install It may trigger a UAC prompt Click Yes on the UAC prompt or ask your computer administrator to type the required password GCAS Desktop will update the licence and the Page 27 of 388 GCAS Desktop Manual Guide rev 14 window similar to this one shall appear GCAS Activator Copyright 1 Vigilant Technologies Ltd 2014 Version 3 3 1 0 The licence has been installed Licence version 3 Licensed to ken hee TEHET Licence type Lifetime Licence start date N A Licence expiry date N A does not expire Features included 22 features Ox0F 1FFDB Number of GC 100 Computer code 18AB 1747 771C Thank you for using GCAS 3 In rare cases where UAC is disabled by your system administrator or if GCAS Desktop is running in elevated mode run as administrator the notification window will appear green instead of yellow The licence is updated automatically and you don t have to click the Install button Your GCAS licence has been extended to 01 December 2016 GCAS has successfully installed this new licence Thank you for using GCAS To configure how GCAS should check licence update automatically go to the Help menu gt Licence gt Configure Auto update Check for licence update on startup Check for licence update every hours Page 28 of 388 GCAS Desktop Manual Guide rev 14 1 4 7 Manual Licence Update 1 4 7 1 If you are online You can force GCAS
331. oducibility and ISO 6976 calculations You can see all installed calibration certificates through Calibration Gas Certificate form That form also provides a way to submit a new certificate if the desired certificate has not been entered to the database 11 3 3 Uncertainty from GC Repeatability and Linearity To calculate Urepeatability GCAS Desktop requires three sets of information repeatability coefficients response concentration coefficients and mole percentage range 11 3 3 1 GC Repeatability 2 3 s at bx cx dx In this formula si is the standard deviation of unnormalised component i The letter i is a simplification of enumeration from methane e g from i 0 to the highest carbon count Four coefficients a b c and d are called repeatability coefficients or parameters of precision factors Detailed explanation of this formula is available on journal article Sutan A and Daniel P Gas Chromatography Conditional Based Monitoring and Live Uncertainty Calculation North Sea Flow Measurement Workshop 2012 You need to enter these repeatability coefficients on the provided data grid Double click the cell or press F 2 to invoke edit mode Alternatively you can paste from Microsoft Excel or other spreadsheet Page 145 of 388 GCAS Desktop Manual Guide rev 14 processing software as long as there are 4 four columns and equal number of rows Click the Paste link above the grid to do so The next link R
332. oh ab Offline database 5 ie GCAS is not connected to any database servers Go to isconnecte File menu gt Reconnect Database to reconnect Status indicator displays general status of GCAS Desktop and status bar notifications which are usually related to database licence update and later on software updates Specific status associated with specific module will not be displayed on the status bar but on their own form instead For example Footprint form Calibration Data form Mole Composition form and Data Analysis form have their own busy indicator on each user interface Most of the time status indicator reads Ready 4 3 Choose Devices Dialogue Choose Devices dialogue appears if you open a GCAS database having number of GC devices exceeds the limit permitted by your GCAS licence This dialogue lets you choose which GC devices to be accessible during current session of GCAS Desktop Gas Ch File Profile Subscriptions View Comms Tools Window Help S No device selected j Vigilant New server Microsoft SQI This copy of GCAS Desktop is licenced for use up to 10 devices However you are trying to open a GCAS database containing 18 devices Choose which 10 out of these 18 to be accessible during this session a L CASE STUDY CG CaseStudy1 O Le CaseStudy2 CG CaseStudy3 Clar CaseStudy4 CAF CaseStudy5 CG CaseStudy6 a gt Demo Demo Af DEMO AF 370XA DEMO R
333. on a Timestamp RF Methane RF Nitrogen RF Carbon dioxide RF Eth gt Peete Caene Sess Footprint 6 709 539 00 8 264 363 00 11 003 08 November 2014 13 20 Calibration Data 9 562 649 00 11 006 7 08 November 2014 13 27 Calibration Data 6 709 592 00 8 266 032 00 9 559 701 00 11 003 r 2014 13 34 Calibration Data 6 709 493 00 8 266 375 00 _9 562 141 00 11 004 08 November 2014 13 42 Calibration Data 8 264 127 00 11 0046 y gt Forward calculation must include the last footprint before this data point Hence this is what we meant by last footprint in chapter 13 2 6 not the reference footprint This footprint should be at the first row on this grid Backward calculation may or may not have footprints in this grid view For example you are graphing uncertainty trend with backward calculation for 30 days If the footprint was 40 days ago that footprint won t be included in the calculation On another data point where the footprint was 25 days before this footprint should be at the last row if you set the form to trim at footprint If you set to continue through i e include data before footprint there may be more records preceding this footprint Had the records on the displayed grid do not conform to the two paragraphs above this indicates a bug Kindly please report the bug to support i Vigilant com 13 4 Insert Comment Click View comments button at the bottom of the Uncertainty Trend form
334. on direction whether from MLC to single point or single point to MLC Eei MLC Single Point RF Offline Converter 1 Which conversion do you need Direction MLC Single point Convert multilevel calibrated RF te single point RF Single point MLC Coefficients i i i i Convert single point RF to multilevel calibrated RF Constraints Composition Page 275 of 388 GCAS Desktop Manual Guide rev 14 Next enter the MLC coefficients This page has similar layout to MLC Coefficients form You can paste from Microsoft Excel or other spreadsheet processing software as long as the data has 4 columns and 15 rows for 15 gases click Paste to do so If the footprints calibration data to convert don t have gases such as octane nonane decane or neopentane leave the coefficients of those gases to all zeroes feel Enter the coefficients of MLC analysis function This converter tool supports up to C10 decane lf your GC does not have certain gases such as neopentane or octane or nonane leave the coefficients of those gases to all zeroes y a bx cx dx MLC Single Point RF Offline Converter y multievel calibrated peak area x single point peak area Coefficients a b c d coefficients of analysis function b 0 Component b Methane Nitrogen Carbon dioxide Ethane Propane i Butane n Butane Neopentane i Pentane n Pentane a 0 000304 0 072477 0 00635 0 002101 1 3E 05 0
335. on menu and select ISO 10723 The first submenu is not clickable but it tells you what the flag bit of current record is In the screenshot below it tells us the flag bit for this record is MLC even though RF chart displayed at the back is single point Tools Administrator Window Help ae Import Data Sq Import Data CSV Import Data Manual Entry hinner lines Show footprint DEVICE NAME Sea TION DATA TIMESTAMP FOOTPRINT TIMESTAMP Test Ac Add Comment ember 2014 08 23 01 December 2014 15 47 Send to Correlation Calculator Change calibration data Be Lo Charts Tables Health status Comme E Print Preview O fm Print A Show iene 20 000 000 se MAR AS OF LOT Mark As Bulk View MLC Coefficients aa Change MLC Constraints 10 000 000 Response Factor Single Pointi 3 000 000 You can change the MLC flag bit if necessary however there is one important difference between Mark As and Convert To Read more on the next chapter 7 11 2 7 11 2 Mark As versus Convert To Open Action menu select ISO 10723 then select Mark As or Convert To and GCAS Desktop reveals this dialogue box Page 86 of 388 GCAS Desktop Manual Guide rev 14 Convert to Mark changes the flag bit only Mark as single point RF Ol a Mark as multilevel calibrated RF Current flag bit is highlighted in yellow to clarify what the current flag bit is Next decide whether you need to mark t
336. on of GCAS Desktop would set up six user roles e System administrator e Engineer 1 e Engineer 2 e Partner e Read only e Custom Similar to user types system administrator has access to all actions in both GCAS Web and GCAS Desktop On the other side read only role has the least access You can also define your own user roles and aszsign action permissions to them if you are the GCAS administrator Go to chapter 27 2 Define new user types and roles and 27 6 Action permissions to read more Page 44 of 388 GCAS Desktop Manual Guide rev 14 3 2 Groups and Workspaces Concept Group is the highest hierarchy of all GCs Each GC device has to be a part of a group A GCAS database should have at least one group For example a company called ACME Ltd has three different platforms These three platforms are all part of Platforms group Workspace is a way to separate GC devices which belong to the same group Each group may have several workspaces For instance group Platforms has three different platforms so each platform has its own separate workspace Platform A Platform B and Platform C You should see workspaces of the groups assigned to you on the device panel in the main user interface once you have logged in Underneath these workspaces are GC devices If you don t see anything on this panel your GCAS administrator could have not assigned your user account to any groups yet File Profile Subscriptions View Comr
337. on such as the package you want any feature add on packs how many GCs and how many PCs We generate your licence based on this information thus your licence is ready when you go through online activation process Currently our website offers 1 3 or 5 computers Contact us if you need more than 5 computers so we can arrange a discount for you This number of PC becomes the activation count One successful online activation will reduce this number by one If you don t have internet access and request offline activation by sending your computer code we will send your licence via email then we will also Page 21 of 388 GCAS Desktop Manual Guide rev 14 decrease your activation count by one When this activation count reaches zero you have used up all your available licences and cannot activate GCAS Desktop on other PCs 1 4 3 Online Activation If your computer has a working internet connection we advise to activate your GCAS online During online activation GCAS Desktop contacts GCAS Activation Server maintained by i Vigilant Technologies to retrieve your licence 1 The first time GCAS is run it requests for activation The following window pops up Activation required GCAS requires a valid licence to run Please enter your licence now Instant 4 day trial Il Activate offline Activate online 2 Online activation requires internet connection 3 Click Activate online button and you shall see this window Activatio
338. one Europe London 3 Enter the information then click Save Regarding time zone If you use i Vigilant central database all user comments e g in the Footprint or Calibration Data have their timestamps converted to server time zone GCAS Desktop uses this time zone information in your user profile to display timestamps of user comments in the correct time including times when you are travelling If you enter a time zone other than the actual time zone you are living in GCAS Desktop may display user comments with wrong time If you use local corporate database or local offline database GCAS Desktop assumes the server time zone is the same as your time zone No time zone conversion is performed Page 46 of 388 GCAS Desktop Manual Guide rev 14 Empty time zone information is replaced by the default Europe London UTC 0 standard time UTC 1 daylight saving time 3 3 2 Change Your Password Once your GCAS administrator finished creating your user account it has usually a default password of password all lowercase Otherwise your administrator should have told you about your initial password To change your password follow these steps 1 Go to the Profile menu gt Change Password If you don t see this menu on the menu bar your user type may not have the menu permission for it i e your GCAS administrator prohibits you from changing password Profile Edit Profile Change Password Idle Timeout Log
339. ons provider TCP Provider error 0 No such host is known WE DEMO3 WE DEMo4 GCAS is now attempting to revert back to offline mode by ES DEMOS By fia C10 for development Switchover Failure Recently used devices BrE 370XA DEMO1 Search device 9 H Q Z lb Offline Ready 29 6 Automatic Resumption of Data Capture GCAS Desktop stops all data capture operations immediately after it detects network connectivity problem This is because the connection between GC Connect form and GCAS database server was cut during this disruption thus an attempt to commit an incoming new record to database server would yield an error If you don t have GCAS feature Work offline Capability in your GCAS licence or if you never set up a temporary database beforehand all GC Connect forms remain stopped after the disruption This is particularly bad if you used unattended mode as no one knows that the operation terminated until someone visits the computer With work offline capability GCAS Desktop can safely resume all data capture operations after switching to temporary database To enable this feature open Work Offline Preferences dialogue through the File menu gt Work Offline gt Work Offline Preferences Page 371 of 388 GCAS Desktop Manual Guide rev 14 Work Offline Preferences Sync data in the temporary database fromthe last H months Stonng too much data in the temporary database will take more
340. onse factor Log response factor 6 6 1 0633 1 2853 1 4853 1 6853 Log molecular weight Note Correlation data sent from Data Analysis context menu Send to Correlation Calculator may include gases with unrelatable correlation such as i butane i pentane nitrogen and carbon dioxide GCAS Desktop display these gases as red dot in the R chart indicating they should be removed Page 221 of 388 GCAS Desktop Manual Guide rev 14 18 3 Any X Y Calculator Switch to Any X Y Calculator tab on the data table section This would change the data entry section to the screenshot below Add entry Y Add Unlike RF MW calculator here you can enter literally any real numbers for X and Y values Click Add to insert this entry into data table This entry is also graphed on the chart immediately Note If you need to find the correlation of the logarithm of X and Y instead of just X and Y visit the next chapter Any log X log Y calculator Similar to RF MW Calculator to delete one or more entries you need to highlight the row s and then press on your keyboard In addition to edit the X value or Y value double click on the corresponding cell to enter edit mode Press on your keyboard to commit the change and to update the chart RF MW Calculator Any A Calculator RE MW Calculator Any X Calculator _ Take base 10 logarithm before calculating R Take base 10 logarithm before calculating R X value
341. ools menu on GCAS Desktop main window and then select ISO 6976 Calculator Through this menu you will enter the mole composition by hand manual input or through copy and paste 2 Sent by Mole Composition form Open the desired mole composition record go to the Action menu and select Send to ISO 6976 Calculator If you have GCAS feature ISO 10723 as well choose which one to send either the single point or the MLC Through this method ISO 6976 Calculator form uses the selected mole composition record 3 Sent by Calibration Gas Certificate Open the desired calibration gas certificate go to the Action menu and select Send to ISO 6976 Calculator By this way ISO 6976 Calculator form uses the mole percentage portion of the selected calibration certificate 4 Sent by Data Analysis Graph some mole composition trend put the Data Analysis form in selection mode drag a selection rectangle then right click the chart and select Send to ISO Page 225 of 388 GCAS Desktop Manual Guide rev 14 6976 Calculator Records inside the selection area are averaged and then sent to ISO 6976 Calculator form 5 Sent by Mole Composition Comparison Load a range of records then right click the comparison chart and select either Send to ISO 6976 Calculator Selection or Send to ISO 6976 Calculator Entire X axis The former requires a selection area while the latter doesn t You may need to confirm which device s stream s to be sent to ISO 6976 Calculat
342. op GC connection permanently when GCAS Desktop encounters certain error codes Typically the error codes in the auto terminate list represent fatal errors To turn on this feature give a check mark on Terminate GC connection if these errors are encountered during poll This feature is already turned on by default for error codes 0x00000046 Socket library error and 0x00000086 Invalid MBAP pointer When GCAS Desktop encounters any of these two error codes it will stop GC connection Terminate GC connection if these errors are encountered during poll Socket library error Ox00000086 Invalid MBAP pointer Remove from list Clear selection be i a Or add another error code by Page 325 of 388 GCAS Desktop Manual Guide rev 14 The error code 0x00000046 Socket library error indicates a problem within Microsoft Windows Socket winsock The way to fix this error is you need to open an elevated command prompt run as administrator enter this command netsh int ip reset and restart the computer It is not something GCAS Desktop can fix with a simple reconnection The error code 0x00000086 nvalid MBAP pointer may happen to a very limited number of GC devices usually GC with old firmwares on ethernet connection It has something to do with the way GC respond back to the command issued by the computer Simply explained MBAP stands for Modbus Application Protocol When a computer issues a Modbus command to a machine the GC t
343. op displays six digits after the decimal point Page 157 of 388 GCAS Desktop Manual Guide rev 14 12 Uncertainty Coefficients Uncertainty Coefficients capitalised C is a tool to store uncertainty coefficients repeatability coefficients and response concentration coefficients in GCAS database so that you don t have to re enter the same set of coefficients over and over again as they rarely change Note This module requires GCAS feature either Uncertainty Calculation or Uncertainty Trend to be included in your licence As seen at chapter 11 3 3 the coefficient input page on Uncertainty Calculator form has several links related to Uncertainty Coefficients This chapter explains about Uncertainty Coefficients form which is the place to enter the uncertainty coefficient set The term coefficient set refers to collection of uncertainty coefficients a b c d two packages of them repeatability and response concentration of all gases Every gas has their own coefficients and these coefficients are bundled together into one coefficient set record in GCAS database 12 1 The Uncertainty Coefficients Form Uncertainty Coefficients form is accessible from the View menu gt Uncertainty Coefficients But before that you need to select the correct GC device from the device panel or recent device panel Page 158 of 388 GCAS Desktop Manual Guide rev 14 DEVICE NAME STATUS DATE OF TEST Test3 Active 21 October 2014 Repe
344. or isol ISO 6976 Calculator Input composition Pressure and temperature CE Mole Base pressure everest composition 1 01325 bar he Methane Combustion metering temperature ofc Orc w Carbon dioxide ual gt Calculate Propane i Butane n Butane Neopentane i Pentane Output n Pentane Compressibility 2mix Hexane Calorific value Heptane Molar mass composition Wobbe index Relative density Standard density 0 0 0 0 0 0 0 0 0 0 0 0 Octane Paste Reset Use a mole composition record The grid on the left is the mole composition input Grey cells are not editable This grid contains all 15 gases from methane to decane including neopentane If you are to enter the composition manually be careful if your GC device does not read several gases such as C6 devices do not have heptane through decane Some GC devices do not read neopentane as well In such cases set the composition of unavailable gases to zero More details about inputting composition are on chapter 19 2 At the top centre region of the form set the base pressure and combustion metering temperature pair When all inputs are correct click Calculate Calculation results are displayed on the grid at the bottom region In addition of five properties of ISO 6976 standard the calculator also displays the compressibility factor Z of the input composition 19 2 Ways to Enter Composition Input composition can come from a manual input copy a
345. or RT chart but not the 1 s You can override this behaviour by starting GCAS Desktop with an additional drawincompleteRFRT parameter When you view an incomplete record its response factor chart or retention time chart will display a text annotation on top of itself For example Page 77 of 388 GCAS Desktop Manual Guide rev 14 Retention Time Heptane Era BE Footprint BS Calibration Data Propane a28 i Butane n Butane neoPentane 1156 i Pentane ET Re TANA Fe Ts colibration does not include retention time data n Pentane Hexane ems Nitrogen Methane CO Ethane 2577 I3 0 50 100 150 200 250 300 350 Retention time 5 In the screenshot above the calibration record does not have retention time data You only see blue bars footprint but red bars calibration are missing Another example Response Factor 20 000 000 _ 15 000 000 o 7 bin a r a i j L J r 7 r 10 000 000 The footprint does not include response factor data La Li a of 5 000 000 Nitrogen COs Ethane Propane i Butane n butane i Pentane n Pentane Hexane Heptane neoPentane w m E a Footprint Calibration data the calibration record has RF data but its footprint does not You only see red line calibration but blue line footprint is missing The chart displays annotation that the footprint does not have RF data If you are on Calibration Data form the annotation may
346. or specific selections a fr star indicates a footprint Mark all records w of this device 370XA DEMO1 as 4 multilevel calibrated RF w Mark 24 Jun 2015 00 00 x and 24 Jul 2015 10 02 G of this device 370XA DEMO1 as 4 multilevel calibrated RF w These records Select all 08 November 2014 13 35 Celei Gane Mark 08 November 2014 13 28 Select latest 30 days Select latest 30 records Page 88 of 388 GCAS Desktop Manual Guide rev 14 Note There is no Convert To feature for bulk operation because it may damage multiple records 7 11 4 MLC Constraints We moved the explanation about concepts and application of MLC constraints to chapter 22 2 Most of the time users need not to worry about MLC constraints However there is a slim chance the default MLC constraints causes nonsensical RF values such as 300 billions where it should be about 17 millions In such cases you may need to override the MLC constraints in order to get the correct result Read more on chapter 22 2 about MLC constraints 7 12 Printing From an open Footprint or Calibration Data go to the File menu on the main menu bar Select Page Setup to configure paper size and print orientation Select Print Preview to get a preview or Print to begin printing Alternatively the menu Print Preview and Print are also found inside the Action menu The Quick Print menu immediately sends the footprint or calibration data to your default printer according t
347. orary Database Exit 1 Use Existing Temporary Database Maintain Temporary Database Sync Now Work Offline Preferences Do not open any forms or dialogue box while initialisation is in progress Page 364 of 388 GCAS Desktop Manual Guide rev 14 Initialising Creating tables 18 of 162 records copied GCAS Desktop creates your temporary database located in the installation directory DB WorkOffline your username sdf GCAS Desktop then synchronises all data from the main database server since last month to your temporary database That is all data having timestamp greater than today minus one month On completion the progress window displays the confirmation message fe Initialisation Completed G initialisation ts complete You can work offline now To change how much data to synchronise into temporary database go to the File menu gt Work Offline gt Work Offline Preferences Change how many months of data to store on your temporary database between 1 month and 24 months 2 years then do a manual sync to enforce the change Work Offline Preferences Sync data in the temporary database fran Storing too much data in the temporary Treabesasateh space and more time to finish a synchronisation process _ Automatically sync to central database server when go online Automatically switch to temporary database if network connection is lost Resume all modbus operations after a successful switchover Do
348. ord Using online record wins the record on your main database server and replaces the conflicting record on your temporary database On the opposite side using offline record wins the record on your temporary database and replaces the offending record on your main database server Once you clicked the appropriate button GCAS Desktop applies change to both databases and moves on to the next conflict if any To repeat your action whether using online record or offline record for a particular database table first tick Repeat my action for all conflicts on the same table and then click the appropriate decision whether to Use online record or Use offline record GCAS Desktop applies the same action for all conflicts on the same database table in the queue Eventually GCAS Desktop may load a conflict of a different database table GCAS Desktop will display both records and ask you to review and decide an action again At the end when all the conflicts have been resolved the dialogue closes automatically Page 376 of 388 GCAS Desktop Manual Guide rev 14 Note To leave all conflicts as they are i e to let the records be different between your main database and your temporary database close the Resolve Conflicts dialogue using the close x button on the title bar GCAS Desktop will ask you to resolve them later upon next sync operation 29 10 Login Form in Offline Mode When you are working offline you can also log out from GCAS as usua
349. osition comment_calibration_certificate comment_uncertainty_trend SET DEVICE status_footprint SI S S S Sy S RY RT RT AT RT S A A A HAO A A A A y E y e 8 1 81S 0 OO 5 ES EST 1 R CS R S EST E CS E R 8 R C81 E 81 E81 8 JOWK 181 0 S01 OOOO a i Define a new user role Cancel Similar to menu permissions tick the check box to grant permission or untick to revoke Click Save to enforce the change If other GCAS users are currently logged in to GCAS database on other computers the change will take effect on their user accounts after they log out or exit GCAS Desktop Page 342 of 388 GCAS Desktop Manual Guide rev 14 28 Export Data GCAS Desktop can export a portion of GCAS database into several file formats for further analysis Go to the File menu gt Export Data and the Export Wizard window shall appear If you don t see this menu that means you do not have any GCAS feature related to data export in your GCAS licence Change Database Reconnect Database Flush and Backup Work Offline Notification Log Minimise to System Tray Exit es erg Export data from GCAS database Welcome to the export wizard This wizard will help you to export data from GCAS database to a file such as CSV spreadsheet or Microsoft SQL Compact database Previous Mex Cancel The Export Wizard Note If you are working offline only the data available in your
350. otprint 11 3 5 ISO 6976 Inputs To be precise ISO 6976 calculation requires four inputs Page 151 of 388 GCAS Desktop Manual Guide rev 14 1 Mole composition to use here GCAS Desktop uses the selected calibration certificate as the mole composition Base pressure The default is 1 atmosphere 101325 Pa absolute 3 Base temperature and 4 Combustion temperature Many constants depends on the pair of combustion temperature and base temperature The set of constants for 0 C is different from the set of constants for 15 C In order to keep things simple GCAS Desktop supports six pairs of combustion base temperature e 0 C 0 C e 15 C 0 C combustion temperature 15 C base temperature 0 C e 25 C 0 C e 15 C 15 C e 20 C 20 C e 25 C 20 C Split numbers are a set of numbers to indicate the composition of components higher than the device actually supports For example a C6 device reads methane ethane propane butane pentane and hexane denoted C6 The plus sign at C6 here indicates that higher C numbers such as C7 and C8 are merged into C6 because the device cannot read them Split numbers are obtained through lab testing and are expressed using the format n n n n where n is a number Sum of all numbers should be 100 For example a C6 device has split numbers on hexane as 60 30 10 This means mole percentage of hexane is actually 60 of the current hexane heptane is 30 of hexane an
351. ou need to work with Microsoft Access databases or to export data to Microsoft Access database You would need a separate licence of Microsoft Office or Microsoft Access 2010 2013 or either the free Microsoft Access Database Engine 2010 or free Microsoft Access Runtime 2013 Get Microsoft Access Database Engine 2010 from hitp www microsoft com en us download details asox id 13255 or Microsoft Access Runtime 2013 from http www microsoft com en us download details aspx id 39358 Page 18 of 388 GCAS Desktop Manual Guide rev 14 1 3 Supported GC Brands GCAS Desktop is compatible with gas chromatograph devices which use thermoconductivity detector TCD and use peak area formula to calculate response factor For the time being GCAS Desktop supports gas chromatograph manufactured by Daniel Industries and ABB GCAS Desktop is able to import files generated by these brands We plan to broaden this list in the future If your GC device is neither Daniel nor ABB consult our support team to find a workaround For instance if your GC works in a similar manner as Daniel GCs only with slight differences you can still designate the device as Daniel GC in GCAS Desktop but the interpretation of the charts will be different As long as the device follows Modbus standard automatic data capture should work without problems 1 4 GCAS Licence and Activation GCAS Desktop requires a valid GCAS licence to run GCAS licence carries the information req
352. ough Test connection button Make sure you have your GCAS username and password registered in the desired GCAS database so you can log in to GCAS Desktop later When you click OK GCAS Desktop asks you whether to switch it now or later OCAS will disconnect current database server and connect to the new one Click OK to proceed with the reconnection All open forms will close and you will lose any unsaved data Click Cancel if you have unfinished work GCAS will stay connected to the current database server and you need to restart GCAS manually for the change to take effect Cancel If you click OK GCAS Desktop will 1 2 3 4 Unload all workspaces and devices from current database Disconnect from current database Connect to the new database and finally Load workspaces and devices from new database Otherwise if you click Cancel GCAS Desktop keeps connection to current database until you exit the software You can resume working afterwards if your credential username and password is exactly the same in both databases Otherwise GCAS Desktop will log you out and you are prompted to log in again using the correct credential Your user account admin exists in 101 255 90 246 but your password in this database is different Please enter the correct password Page 35 of 388 GCAS Desktop Manual Guide rev 14 2 4 Change Database before Login Starting from GCAS Desktop 1 7 3 0 login window d
353. pages below the grid the converter form reveals the Notes column and writes device tag name followed by record timestamps These notes help you differentiate which rows belong to which device in case you are converting bulk records from multiple GC devices or converting mixed data coming from manual entry CSV file and device GCAS Desktop runs a validity check for invalid values such as negative RF Should it find errors the problematic rows will display red exclamation mark on their headers and are highlighted in light red GCAS Desktop also refuses to move onto next page unless the errors are fixed Ultimately click Next to move onto next page and you shall see GCAS Desktop is doing its job performing ISO 10723 conversion It may take a while if you are converting hundreds or thousands of records When the conversion is finished you have options to Save as CSV Export to Excel or Copy to Clipboard The average row if ticked in previous page also appears in the conversion result at the very top However it is not the actual average of conversion results you see right now it is simply the MLC or single point conversion of the average value of all input rows before Page 279 of 388 Nitrogen FPO 553 873 73 Carbon dioxide 6 934 734 6927 6 934 s002 7242 8 934 309 35039 8 934 820 19995 GCAS Desktop Manual Guide rev 14 4 173 1375 314 144 3955 314 141 9645 41128157 m 7 r9 288 30059
354. panel above Recent device list is persistent that is this list is preserved after you exit GCAS Desktop and run it again the next time 4 2 3 Search Tool and Toolbar There is a small toolbar under recent device panel It has a search tool to help you find a device if you have a lot of GC devices on your device panel Type the device name and click Search When you are in search mode the recent device panel temporarily turns into search results panel After you find the device in the search result list click the device to select it or click 2 Finish searching to close the search tool The toolbar also contains three more buttons 4 Hide recent devices Hides the recent device panel Your main device panel fills the entire sidebar f Show recent devices If the recent device panel is hidden this button brings it back visible Gt Clear recent devices Clears your recent device list Refresh devices Reloads all workspaces and GC devices on your device panel 4 2 4 Status Bar Status bar at the bottom of the form hosts two elements work offline indicator and status indicator Work offline indicator appears if you have Work offline Capability included in your GCAS licence The indicator displays one of these symbols Page 51 of 388 GCAS Desktop Manual Guide rev 14 Icon depending on network Text medium a GCAS is working online and is connected to database a GCAS is working offline and is connected to temporary ib wh
355. pears Import Data Import Data CSV Import Data Manual Entry Set Status Add Comment Send to Correlation Calculator E Print Preview wm Print 50 10723 d Flag bit in database Single point RF Mark As or Convert To Mark As Bulk View MLC Coefficients Change MLC Constraints Page 269 of 388 GCAS Desktop Manual Guide rev 14 Set constraints to filter out bad solutions MILC to single point conversion only Linear functions y a bx Linear functions have one real root However if it is negative Take absolute value to make it positive not recommended Reject the solution and set the result RF to zero Quadratic functions y a bx ox sie dacs Quadratic functions may have twa one or no real roots GCAS will always reject any imaginary c s root and negative real root However if both roots are positive Use the smallest one Use the largest one Cubic functions y a bx cx dx Cubic functions may have one two or three real roots GCAS will always reject any imaginary root and negative real root However if there are multiple positive roots _ Use the smallest one Use the largest one Use the one that yields result RF inside this range Use the one that yields result RF inside or closest to this range Make changes as necessary In this screenshot example we are changing the cubic constraint as well as changing the target RF value range Whe
356. pen Correlation Calculator go to the Tools menu gt Correlation Calculator Correlation Calculator can also be opened through Send to shortcut such as from Footprint or Calibration Data or from Data Analysis This Correlation Calculator form has three sections which are data input section data table section and chart section Correlation Calculator D ata Add entry input S section RF RF MW Calculator Any X Calculator Molecular weight Response factor Data table This calculator has two modes named RF MW Calculator and Any X Y Calculator The first mode calculates the correlation value for the given pairs of RF response factor and MW molecular weight On the other side Any X Y Calculator computes the correlation value for the given pairs of arbitrary X and Y values Use this mode if you need the X axis to be something other than the logarithm of molecular weight The active tab on the data table section indicates current active mode Switch tab to change mode Page 219 of 388 GCAS Desktop Manual Guide rev 14 18 2 RF MW Calculator Switch to RF MW Calculator tab on the data table section This would change the data entry section to the screenshot below Add entry MW w Add a new entry by selecting the desired gas from the MW molecular weight dropdown and type its response factor value in the RF text box Click Add to insert this entry into data table This entry is also graphed on the chart immedia
357. plete uncertainty calculation has asterisk symbol on it For example the dashboard tile displays U CV 0 12063 By default dashboard tiles turn red if their combined expanded uncertainty exceeds 0 2 You can change this threshold or the uncertainty type absolute or combined expanded at the rules tab 16 1 1 3 Date of last calibration Date of last calibration record indicates how long time has passed since GC was last calibrated On dashboard tiles date of last calibration has calibration data icon If last calibration was marked as footprint it has T footprint icon By default the dashboard tile should ve turned red if date of last calibration is older than 3 days However due to various calibration policy among groups or platforms this rule is turned off To change the threshold i e how many days to make it red and turn on the rule go to rules tab Furthermore you can override the rule for date of last calibration at per workspace and per device level Visit chapter 16 2 Overriding Rules for more information 16 1 1 4 Date of last mole composition Date of last mole composition shows the timestamp of latest mole composition record among all streams On dashboard tiles date of last mole composition has mole composition icon Date of last mole composition is useful to monitor the connectivity between your GC device and GCAS Desktop running in another computer next to the GC device Should a problem occurred an
358. r 8 Data Analysis is on chapter 10 and Mole Composition Comparison is on chapter 17 Page 288 of 388 GCAS Desktop Manual Guide rev 14 23 Lag Time Lag time is the total time of gas stream measured from the time it is sampled at the main pipeline to the time it exits the detector of your GC After leaving the sample probe the gas enters pressure letdown system to have its pressure reduced in order to be safe for the GC The pressure letdown system is series of regulators heating elements and pipes with different diameter and length which affect the travel time Not to mention the GC device itself has a predefined cycle time and analysis time Therefore when the gas finally reaches the detector within GC it is not the same gas travelling inside main pipeline at the same exact moment It can range from several minutes to few hours behind the pipeline Bypass flow t Heat tracing i Analysers Th A i Heated regulator Pressure Let Down System J Heated plate L Sample flow Pipeline Typical pressure letdown systems Heat tracing Fi Lag time is used by spot samples Its main purpose is to shift the date and time of the spot sample record Spot sample values are then compared to the nearest mole composition data at the timestamp of spot sample plus lag time Without lag time taken into account spot sample will precede the mole composition record by several minutes to few hours ahead makin
359. r decane C10 drag them to the trash bin icon and they will move to the unused gases pink area Drag gases out of the pink area back into the green area to reuse them if necessary Page 285 of 388 GCAS Desktop Manual Guide rev 14 Or import from CSV file Or use data from a device E OneDrive i Vigilant CSV import test Tes MLC MC csv Browse a Import This CSV file follows standard GCAS CSV template This CSV file has data starts at column 1 A w row 1 having gas order of Finally click Import GCAS Desktop reads your CSV file and appends data into new rows Existing rows are not affected Also the converter form reveals an additional column named Notes and writes the CSV file name followed by row number For data import from a GC device select the device followed by the desired date time range and the stream number Click Import and GCAS Desktop will query GCAS database to get these records Or import from CSV file Or use data from a device Import MC data from this device From 23 July 2015 00 00 B To 30 July 2015 13 08 alr Stream hy t Import The converter form reveals the Notes column and writes device tag name followed by record timestamps These notes helps you differentiate which rows belong to which device in case you are converting bulk records from multiple GC devices or converting mixed data coming from manual entry CSV file and device GCAS Desktop runs a validity check for invalid valu
360. rcentage plus minus range be calculated This plus minus range will affect the final U repeatability value e Assume universal range Every gas component uses the same range This is the most inaccurate option but provides a fail safe estimate if you do not have sufficient data in Mole Composition module e Set individual range Each gas component has its own plus minus range and is independent from one another This option has better accuracy compared to the universal range e Manual range You will type the minimum mole percentage and maximum mole percentage directly at WRM RF page later Accuracy depends on these values Use this option if you want to test some unexpected numbers e Use 2 standard deviation of mole composition The plus minus range is taken from this standard deviation Methane MC Trend Stream 1 90 5000 Mean 2 stg dev 90 2500 2 std dev Methane MC 90 2000 90 1500 90 1000 90 0500 06 Jun 08 Jun 10 Jun 12 Jun 14 Jun 16 Jun 18 Jun 20 Jun 22 Jun 2014 2014 2014 2014 2014 2014 2014 2014 2014 of mole composition records within the given period This option provides the best accuracy Page 149 of 388 GCAS Desktop Manual Guide rev 14 Balanced gas option keeps your mole percentage low limit and high limit at 100 This option is turned on by default and you can designate which one as the balanced gas Typically methane is the balanced gas because it is the largest component in the mixtu
361. re and outnumbers other gases many times To turn off this behaviour untick Balanced gas check box Two tables below illustrate how the calculation will go if balanced gas option is turned off top and turned on bottom In this example balanced gas is methane and a universal plus minus range 15 Is enforced Component Mole percentages Mole percentages Mole percentages enn sicewae ise ie Tow osassos aaszaz 1143545 Balanced gas option is turned off Component Mole percentages Mole percentages Mole percentages a ose ee Balanced gas option is turned on for methane While other gases follow 15 range methane ts calculated by 100 sum of the others However if you choose another gas which has relatively small percentage as the balanced gas and it causes plus minus range to fall onto negative number GCAS Desktop replaces the negative Page 150 of 388 GCAS Desktop Manual Guide rev 14 percentage with zero and thus their summation is not guaranteed to be 100 Always choose the component with largest percentage as the balanced gas 11 3 4 Uncertainty from GC Reproducibility Uncertainty Calculator Test3 Uncertainty from GC reproducibility 3 Linearity a L Mole percentage ra z a E Change footprint a Uncertainty from GC 50 6976 inputs Include calibration data Until GCAS bumps into next footprint CALCULATIONS Uncertainty of calibrati WRM RF and standard eae 31 Ju
362. re to stop GC connection temporarily and restart it immediately or with delay when GCAS Desktop encounters certain error codes To turn on this feature give a check mark on Restart GC connection if these errors are encountered during poll This feature is already turned on by default for error codes 0x00000002 Illegal state error Ox00000044 TCP IP connection error and 0x00000045 TCP IP connection was closed by remote peer When GCAS Desktop encounters any of these three error codes it will trigger a connection restart Restart GC connection if these errors are encountered during poll CxDQO000002 Illegal state error On00000044 TCP IP connection error Ox00000045 TCP IP connection was closed by remote peer Removefrom list Clear selection Or add another error code iy dd lf connection restart failed wait minute before another restart attempt and stop retrying after 30 w attempts Page 324 of 388 GCAS Desktop Manual Guide rev 14 To remove an error code from the trigger list highlight the error code and click Remove from list The next link Clear selection deselects any selected items To add an error code to this trigger list choose one from the dropdown or type the error code in hexadecimal number for example 0x00000084 then click Add When GCAS Desktop restarts a connection it stops the connection and restarts it immediately However there are chances that the first restart will still fail If you want
363. read has started Connected to GC Operation was successful new data recemed Record commit succeeded To save the error log click ll Save Connection log is saved in a CSV format However this button will save the filtered log as only displayed items are saved To save the entire log inclucing those hidden items open the small drop down menu near the Save button and select Save Entire Log Page 321 of 388 ee Ly Lod A Srii ld m mT Show hide T Save Filtered Log Save Entire Log 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 06 Oct 2014 Ae Pit WA n Le pi g Pes t3 12 13 32 12 13 36 12 1 16 12 15 19 T21 19 12 1x24 12 1 x24 12 13 24 12 13 24 12 1 48 12 13 48 12 16 58 12 16 58 1 17 07 12 17 07 12 17 07 17 1 File l A Poll Poll Information Information Information Information Information Information Poll Commit Poll Commit Poll Information Information I mek es Sree GCAS Desktop Manual Guide rev 14 Connected to GC 000000000 Operation was successful new data receiwed 000000000 Operation was successful new data recemved User stopped the connection to GC Disconnected from GC Attempting to connect to GC This is unattended data capture Starting a record commit background thread The record commit background thread has
364. ream Registers F Add stream Click Add stream button to define a new stream This brings forth another dialogue see Stream number Mark as MLC left where you can define gas names and their Register addresses register addresses Also remember that each gas TE v a consumes two Modbus registers on 16 bit mode but only one for each on 32 bit mode Propane ol i Butane The last register address is reserved for unnormalised total This is the sum of raw data n Butane read by GC device for some devices may Lapeer automatically normalise mole composition i Pentane values so they add up to exact 100 n Pentane Does your GC device not provide unnormalised Nitrogen total data Visit chapter 25 1 5 for a workaround Methane Users with GCAS feature SO 10723 in their licences shall see an additional check box near Ethane x the top right corner named Mark as MLC This EE E E check box controls whether the incoming Carbon dioxide composition data on this stream should be marked as multilevel calibrated or not Rewind Cancel to chapter 8 10 to read more about multilevel calibrated composition Page 304 of 388 GCAS Desktop Manual Guide rev 14 After you click OK the new stream appears on the list In this Live data analysis example it displays 40 65 because we use standard 16 bit Registered mole composition Modbus thus register 64 unnormalised total actually uses address _Stf ams 64
365. record which is using the MLC coefficient set in question Then open Action menu select ISO 10723 and then Change MLC Constraints The menu brings the MLC Conversion Constraints MC dialogue Page 271 of 388 GCAS Desktop Manual Guide rev 14 Action 28 Spot Sampling Import Data CSV Set Status Set Status Bulk Send to ISO 6976 Calculator Add Comment Normalisation Scale Flag bit in database Single point MC Mark As or Convert To Mark As Bulk View MLC Coefficients l View Associated RF Change MLC Constraints ee MLC Conversion Constraints MC Set constraints to filter out bad solutions MLC to single point conversion only Linear functions y a bx Linear functions have one real root However if it is negative _ Take absolute value to make it positive not recommended Reject the solution and set the result RF to zero Quadratic functions y a bx cx aaa Quadratic functions may have two one or no real roots GCAS will always reject any imaginary seca root and negative real root However if both roots are positive Use the smallest one C Use the largest one Cubic functions y a bx cx dx Cubic functions may have one two or three real roots GCAS will always reject any imaginary root and negative real root However if there are multiple positive roots Use the smallest one Use the middle one if there are three or smallest if there are tw
366. rend Comparison form is locked to your comparison list only To reset the form click Reset and reload device list Page 213 of 388 GCAS Desktop Manual Guide rev 14 Choose a gas and date range Add devices to list Select stream to compare Start graphing Gas to compare JE ISO 10723 sample i Show Device tag Stream MLC BrE Test ai goni z BPE Test7 14 June 2015 22 00 lr 15 June 20150830 Er Collapse all Device Stream Set properties and range ISO 6976 output to compare 23 From To 15 Jun 2015 B Base pressure Combustion metering temperature y Expand all E E r ala e This form is locked to 3 comparison entries Reset and reload dewice list W Tx A x N CV comparison MJ m Device Stream Send to ISO 6976 Trend Comparison button transmits the entire plot range To compare ISO 6976 trends for a limited range switch Mole Composition Comparison form to selection mode and use the right click menu Send to ISO 6976 Trend Comparison as illustrated in chapter 17 3 8 Page 214 of 388 GCAS Desktop Manual Guide rev 14 17 3 8 Selection Mode Menus These menus are available if the form is in selection mode and there is a selection area Unlike Data Analysis Mole Composition Comparison requires the selection area to be contiguous that is no record dots on chart jumping out from selection rectangle then return back inside If your selection area is not contiguous GCAS Desktop will al
367. rites all five ISO 6976 outputs to Microsoft Excel worksheet both current ISO 6976 trend and previous ISO 6976 trend values If there is no previous chart graphed before previous ISO 6976 trend values are all blanks No worries you can export to Microsoft Excel even if current ISO 6976 trend chart has a different date time range than the previous chart H 9 Sheet Excel GB Sa x HOME INSERT PAGE LAYOUT FORMULAS DATA REVIEW VIEW TEAM Yusuf Adriansyah g I amp i i ob Cut Calibri Ju 3 I Ee Wrap Text General 12 y ey em i 2 AutoSum A m fe saat a pp Pr m z j te 0 00 a as as en a ae Format vag a a W Format Painter a a a eee oe Formattingy Tabley Styles 7 7 Clear Filter Select Clipboard le Font 5 Alignment iP Number E Styles Cells Editing A F8 7 i gt f single point v A B E D E F G H l J K a 1 2 Device Test8 3 Plot range 13 May 2015 13 50 16 Sep 2015 13 50 4 Previous plot range 13 May 2015 13 50 16Sep 2015 13 50 5 Stream 2 Previous stream 2 6 Base pressure 1 atm Previous base pres 1 atm 7 Comb met tempei 15 C 15 C Previous comb me 15 C 15 C 8 liso 10723 multilevel calibrated Previous ISO 10723 single point 9 10 Timestamp Calorific Value MJ m Molecular Weight Sum g mol Wobbe Index Relative Density Specific Gravity Standard Density kg m 11 Current Previous Current Previous Current Previous Current Previous Current Previous 12 14 May 2015 06 00 40 92506136 40 9
368. rk Offline Automatic Flush and Backup Preferences ERE Last Flush and Backup Status Notification Log Minimise to System Tray Exit Automatic Database Flush and Backup H 4 Flush the database into hard disk drive periodically recommended Cs Flush every 1 0 hour Backup database file after flushing C GCAS DB Backup Create monthly subfolders eg C GCAS DE Backup 2014 December _ Append backup at the end of destination file name Notify me if backup failed Backup file name O Keep original file name overwrite previous backup file O Append number e g Training data 2 l sdf Training data 2 Asdf Training data 2 3 Append date overwrite previous backup on the same day e g Training data 2 2014 12 11 sdf Training data 2 2014 12 T2 sd D Append timestamp e g Training data 2 2014 12 11 15 2 sdf Training data 2 2014 12 11 15 285 Page 41 of 388 GCAS Desktop Manual Guide rev 14 To turn off automatic flush uncheck Flush the database into hard disk drive periodically All other options will be turned off Set the desired flush interval at Flush every field You can choose between 0 5 hours every 30 minutes and 168 hours one week The default is one hour To turn on automatic backup check Backup database file after flushing and set the desired backup directory The backup directory can be on an internal hard disk of the same PC an external hard disk a USB thumb drive or at
369. rk Offline Preferences This will delete your temporary database file You cannot work offline until you set up a new temporary database or open an existing backup Page 381 of 388 GCAS Desktop Manual Guide rev 14 30 Diagnostic and Maintenance This chapter attempts to assist you in case of errors and malfunctions of GCAS Desktop 30 1 Diagnostic Mode On a rare occasions of malfunctions such as exceptions unhandled exceptions crashes or wrong calculations you can run GCAS Desktop in diagnostic mode to collect additional information about the reason for the malfunction to happen On diagnostic mode GCAS Desktop displays an additional window that acts like a debugger output window When you report a bug to us this diagnostic log helps us a lot in order to resolve the problem Start GCAS Desktop with an additional parameter enablediagnostic to activate diagnostic mode Formerly it was enablediagnostics with an incorrect s at the end of word now it is enablediagnostic ype the name of a program folder document or Internet resource and Windows will open it for you Cancel The diagnostic window looks like a console GCAS Desktop runs normally alongside this window and you can use the software as usual Page 382 of 388 GCAS Desktop Manual Guide rev 14 eC GCAS Desktop Diagnostics 11 Aug 15 10 27 04 Login form ReadXMLRememberMe Dictionary contains 2 entries 11 Aug 15 1 4 Login form
370. ro the equation becomes y a bx which is linear Linear functions are guaranteed to have one root however it can be negative Linear constraint tells GCAS Desktop to disregard the negative root then set x into zero or to take absolute value in order to make the x positive The default is to reject disregard negative root Quadratic constraint If the coefficient d is zero the equation becomes y a bx which is quadratic Quadratic functions may have two real roots one real root or no real roots at all solution is imaginary root GCAS Desktop always disregards imaginary root and sets x to zero as well as any real roots which are negative But in cases of one or two positive roots quadratic constraint tells GCAS Desktop to use either the smallest positive or largest positive The default is to use the smallest positive Cubic constraint If all the coefficients are non zero the equation is cubic Cubic functions may have one real root 2 imaginaries two real roots or three real roots Even though every possibility contains real roots the roots may be negative GCAS Desktop always rejects negative real roots That leaves the positive ones which are subject to the constraints described below One exception if all roots are negative GCAS Desktop sets the x into zero GCAS Desktop has different cubic constraint depending what type of record is being converted For response factor GCAS Desktop offers four choi
371. roducibility Similar to calibration certificate parameter there are two options here Reset reference at each footprint or pin a particular footprint for all data The default is reset reference at each footprint as illustrated by the timeline below Page 169 of 388 GCAS Desktop Manual Guide rev 14 Footprint Footprint Footprint 1 May 2014 7 September 2014 20 December 2014 v v v f l I i PAA EAEE EEEE SO RR ESEA a a a a at a a a a aac Gn al oe a ce a a EEE AA a a a a a oR a oR a A a ee C eee A A Plot range start Plot range end 23 July 2014 31 December 2014 This region This region This region Reference Reference Reference 1 May 2014 7 September 2014 20 Dec 2014 Sometimes users want to test how the uncertainty trend would turn out using several different footprints Select the second option then click Change to select the footprint Time November 2014 1 amp 1327 08 November 2014 09 08 21 07 November 2014 11 35 58 21 October 2014 15 04 17 20 October 2014 15 43 49 Filter Options List all footprints Entries per page 30 _ List footprints between 08 Jun 2014 and Sort Newest to oldest 1 Dec 2014 O Oldest to newest The footprint selected through this dialogue box is used to calculate Ureproducibility Of all data in the plot range regardless of the timestamp of the footprint even if the footprint occurs after the plot range ends Page 170 of 388 GCAS Desktop Manual Guide rev
372. rpose only When there are multiple ISO 6976 Calculators open at the same time add a text description to each of them hence you can easily identify which is which ISO 69 6 Calculator Input composition Pressure and temperature Mole Base pressure Gas name composition 1 01325 bar w Methane 48 541991 Combustion metering temperature Nitrogen 1 147607 oc orc W Carbon dioxide 2 894801 Ethane 16 107826 Calculate Propane 20 324256 l Butane 3 488935 n Butane 5 637047 Neopentane 0 i Pentane 0 925426 Value Unit n Pentane 0 772428 Compressibility Zmix Hexane ili Calorific value 66 0688353252 MJ m Heptane 0 025707 Molar mass composition 29 8586515292 g mol oi Wobbe index 64 788853744 Relative density 1 0399027083 Paste Reset Standard density 1 3445139498 kg m Use a mole composition record of Test Open the Action menu and select Show Description Box This reveals a text box above the output section of the form Enter any description to this text box To hide this text box open the Action menu and clear the check mark on Show Description Box Action Show Description Box Compare to Detach from Main Window Description text is used when you are switching windows through the Window menu on the main menu bar and when you are comparing two ISO 6976 Calculators GCAS Desktop automatically fills the description text for cases where ISO 6976 Calculator is opened through a Send to shortcut from Data An
373. rrently installed licence with a new one Cannot be combined with revoke parameter Recommended to combine install with regkey parameter so that you install the licence and registration key in one go Installs the specified registration key or replaces current registration key with a new one Cannot be combined with revoke parameter Uninstalls the current licence and registration key from your computer Cannot be combined with install nor regkey Deactivating your GCAS Desktop software does not automatically increase your activation count in case you bought licences for multiple computers Contact us to migrate your licence along with Page 387 of 388 GCAS Desktop Manual Guide rev 14 attaching the screenshot of command prompt window as a proof of deactivation silent Do not display any message boxes or confirmation messages Combine this switch with install regkey or revoke Note GCAS Activator GCASActivate exe requires elevation Run GCASActivate exe onan elevated command prompt run as administrator to use the commands above End of Document Page 388 of 388
374. rt data from GCAS database Choose what kind of data to export and the date range f TEF Range Footprints amp calibration data Mole compositions From 26 Juy 205 B _ Calibration certificates Uncertainty coefficients Multilevel calibration coefficients C Lag time data _ Also include records marked as inactive Comments 10 August 2015 Beiow Be Unlike other export modules you don t set the destination file Review the export parameters and click Next to continue erg Export data from GCAS database Review that all of these are correct and click Next to begin the export operation Export type Copy to Excel GC devices to export devices show Data to export RF RT mole composition Date range 01 September 2013 to 31 January 2014 Include inactive records No Destination file gt N A Page 350 of 388 GCAS Desktop Manual Guide rev 14 GCAS Desktop commences the export operation On this screen you should see a new window of Microsoft Excel opens possibly minimised in background If you switch to that Microsoft Excel window you see GCAS data is being written to the worksheet O Export data from GCAS database Export operation is in progress Counting records is complete 24 records were queued for export Previous For large number of records the process may take a prolonged time Do not close Microsoft Excel until GCAS Desktop displays the final wizard page
375. rt is cached If you change a parameter the third time first chart graphed is lost when you click Refresh 20 7 Zoom Mode and Selection Mode These radio buttons control whether ISO 6976 Trend form is in zoom mode or in selection mode Data source and options Plot from 15 Jun 2015 09 41 gle to 115 Jun 2015 13 41 lr Records to plot 96 ISO 10723 conversion Convert to single point w Compare both _ Display mean and 2 standard deviations In zoom mode drag a rectangle on a region you would like to zoom Page 239 of 388 GCAS Desktop Manual Guide rev 14 CV Trend 160 00 cy 140 00 120 00 100 00 80 00 60 00 a 40 00 15 Jun 15 Jun 15 Jun 16 Jun 16 Jun 12 00 16 00 20 00 00 00 04 00 CV Trend CV 109 8714 89 8714 69 8714 Pan the chart using the provided scroll bars Drag another rectangle to zoom in further To zoom out one step click on the circled minus button on both scroll bars To zoom all out simply press the button on your keyboard or right click on the chart and select Zoom All Out submenu In selection mode drag a rectangle to create a selection area Right click the chart and you see several menus are now available Chapter 20 8 Selection Mode Menus will explain the function of each menu To clear selection area right click the chart and select Clear Selection Area Chat Comments
376. s 10 August 2015 B7 Uncertainty coefficients Multilevel calibration coefficients C Lag time data _ Also include records marked as inactive Comments Beiow Be Set the destination Access database file t G Export data from GCAS database Set the destination file Change file C Usersiryang_000 Desktopi Export 2014 02 06 accdb Page 354 of 388 GCAS Desktop Manual Guide rev 14 Review the export settings then click Next to begin the export process gt erg Export data from GCAS database Review that all of these are correct and click Next to begin the export operation Export type Export to M Access GC devices to export 3 devices show Data to export RFE RT mole composition Date range 01 September 2013 to 31 January 2014 Include inactive records No Destination file gt C Users ryang_000 Desktop Export 2014 02 00 accdb Beiow Be GCAS Desktop commences the export operation I D wen Export data from GCAS database Export operation is in progress Counting records 10 records found Previous Page 355 of 388 GCAS Desktop Manual Guide rev 14 This wizard page confirms that the export has been successful You can now open the ACCDB file erg Export data from GCAS database gt The export was successful Click Finish to exit the wizard note Stream number negative one 1 indicates a spot sample show the file in File Explorer
377. s 67 1 4 1 CONDO e a E E TE EE EET E E E O EET 68 1 4 2 GaV IDO a A Ne ron URE nt TMC E an MNT aET Can TeaC Pen TT 70 74 3 ManU Sl das a Aeron ve ee nren tei me mney ener ery ae ere ere E ere vee ner et rer eee eee oe tree ey tee Sever reer 72 i Change RECO Fag aN Stat Seegen enar en vet miaa erst tetauciace OS 75 7 5 1 Change RECOra Fagre O T S 75 7 5 2 AOE a es ge Oe ACE Maret RPE REE CT Ie Me sen ar ean aT IS ree 76 7 6 Incomplete Footprint or Calibration Data acca ceneess ee ci ees ee ee 7 Page 4 of 388 GCAS Desktop Manual Guide rev 14 7 1 ZOOM and Scroll RE Chart ONY ee hele ee Se ede 79 7 8 CERERE E a aN T E EE A EE EAE E OE 81 7 9 NPS STU COMMEN ouaa a E E ETE 82 LAO Send to Coreldtion Calculator niise eieae EER EE AEE AE REER 83 7 11 Miultiievel Galibrated RE ISO 10723 arne A aot clade 84 fb es MECHI Bitroaireneeacne n ero eee reer eee Cee 86 LI MakAs Versus CONV Gil setecectcteceratetetustaiccearieettetet titan EE ain R REE 86 7 11 3 Change MLC Flag Bit Multiple Records essssessssssessesssessesssesesssessesssessssssessessseesessseesessseesesssess 88 Yala ee 1 Bs Ging io ac 1g cy nee ene etn mmm eee ne ene ne i uve mnnE ea ROPE Oi bo VEEN a 89 MeN LP GANMINN Mss sec R eect ccc ek aaa aa A A T 89 amp M lle COMPOSICION aiccsdeececedestscecl eects veesbctesteaseeevensbctesteaevesstestctesteasieesteeletentuasseestneletesteacteentueleeieasees 90 8 1 TheMole Compos On FOr 8 peeneeere mnt tee tetera mn E Tete ere re
378. s oer ctn a a 112 9 3 Mputa NEW E ENIC E eee rte ee ne nr Pe 113 9 4 Edita COMIC AC tecea street aia ore ieeette E EE ORETTE OTER 115 Page 5 of 388 GCAS Desktop Manual Guide rev 14 9 5 Change Cerificate Stata xictsn as n oaaae a 116 9 6 Change k Number Coverage Factor sssesssessssesssesssessseesssrossresseesseesssrossresseesseeossrossresseesseeossrossresseesseess 117 9 7 WPS OTIS OMG anan na T E N T heater 118 9 8 send ta l506976 Calc WatOY sorron ennie RR E EENEN 119 10 Dat AHalySiS reni E E S tecetes steve tesstevesecetceice 120 OGY TAG II QEG AIG SUS FOTN iaren EI ATO OA IE IO EEO 120 10 2 Parameters Chart Types and Components uu esessssessesesessesesesessessseseseseseseessseceseesesessesestseseeeeseseens 120 LO RAIOLO S e A aeacde 121 WO2 2 CUA Ty OCS a E E E E 121 1O25 COMPONEN oa a enna namie dane nanalemiat 124 10 3 Date anad Time Range PlOWRANGC esscosicisicreniiiii aia E EEA 126 10 4 Mean and Standard DeviationS s sssossoesssessessssessseossessseesseessseossresseesssrosseossresseessseossrossresseesseeossrossresss 127 10 5 Zoom Mode and Selection Mode 2 0 esesssssssesssessesssessessssesesssecsessscsssssscsessseesesssseseseseeseseseeseseseesessssessees 130 TOS CACAK Cc aE a NE E E E E E E E E A 132 IOF Save orCopy the Charl rsa vicina etree se A ia adele fawitevidhendiendinnes 133 T08 COIOUMBINAG ASSIS CAIN CC cee edad ar e da cet ack deleted cecil sad tas led elses das us dal barnes 134
379. s with ISO 10723 feature included in GCAS licence Users without ISO 10723 feature will not see features related to multilevel calibration MLC As mole composition data may come from multiple streams the stream number is displayed on top of the pie chart Some GC designates stream 1 as the calibration stream and stream 2 as process stream while some others specify stream numbers the other way round GCAS Desktop can also handle GC devices with more than two streams the appropriate stream number is always there on top of the pie chart Remove mode check box will hide the mode Latin modus from the pie chart That is the datum with highest value among other data For example if you have methane composition at 90 it would be difficult to see other gases cramped in the remaining 10 Ticking this option will hide methane from the pie chart Show legend toggles show or hide the legend of pie chart High precision causes the form to show all numbers in 8 digit decimals instead of four digits If you see some rounding errors that is because GCAS uses 32 bit floating point for mole composition data to save database space Colourblind assist To aid users with colour blindness protanopia and deuteranopia GCAS Desktop provides an alternative colour scheme for the pie chart Page 91 of 388 GCAS Desktop Manual Guide rev 14 Show unnormalised reveals third column in grid view the unnormalised composition If you ha
380. scellaneous Threshold value 0 200 Include standard calc uncertainty 0 05 This section sets the threshold line on the chart The default is 0 2 When the uncertainty chart line crosses the threshold line it is recommended to perform a preventive maintenance on your GC The checkbox include standard calculation uncertainty 0 05 controls whether ISO 6976 standard measurement error of 0 05 or 0 1 at k 2 should be included in the final calculation of each data point in the chart By default this check box is ticked 13 3 Uncertainty Trend Chart Once you set all the required parameters click Start graphing at the bottom of the form Uncertainty Trend form switches to chart page and begins the calculation Uncertainty Trend DEMO1 Show ucv LJ uimw O uiw O use LJ Uio U CV Trend DEMO1 Threshold U lt 6 a om 3 a s E os O es i ss E 15 00 15 30 16 00 16 30 O O Pause Stop Eso Calculation in progress Note Uncertainty calculation is slow because it loads many different data from database Moreover uncertainty trend calculation is a sequence of many uncertainty calculations Depending on how wide your plot range and how many calibration records inside the plot range one trend calculation may Page 176 of 388 GCAS Desktop Manual Guide rev 14 take from few seconds to ten minutes or even more Fast CPU and good network connection between your computer and
381. sed by network disruption GCAS Desktop will never ping the database server if you intentionally switched into offline mode as described in chapter 29 3 Going Offline Page 372 of 388 GCAS Desktop Manual Guide rev 14 Work Offline Preferences Sync data in the temporary database fromthe last H months Stonng too much data in the temporary database will take more disk space and more time to finish a synchronisation process _ Automatically sync to central database server when go online Automatically switch to temporary database if network connection is lost Resume all modbus operations after a successful switchover Do a periodic check if GCAS can return online every 3 S minutes And if GLAS can return online Notify me D Automatically switch back to central database Remember current state offline online for next time GCAS is launched First automatic switch on network problem must be checked Next tick Do a periodic check if GCAS can return online and set the desired interval You can choose ping interval from every single minute to every one hour And if GCAS Desktop can return online choose one of the available sub options a Notify me GCAS displays a panel notification at the bottom of the main user interface saying you can return online Pick the appropriate decision whether to go online or stay offline E l GCAS detected the network connection has been restored Would you li
382. see only three resize the form so that it becomes larger to the right side Unattended mode options may not be visible if your screen resolution is 1024x768 There are two grids at the lower part of the form one for calibration parameters and one for mole composition If you only see the grid for calibration parameters it means you do not have GCAS feature Live Data Analysis included in your licence To expand the grids and hide the options panel click the cy Expand button On the opposite to restore the options panel you would click 5 Collapse button 25 2 2 Connection Settings This section configures the connection medium between your computer and your GC device GCAS Desktop supports two media serial cable RS 232 and Ethernet or Wi Fi if your GC device supports it Page 311 of 388 GCAS Desktop Manual Guide rev 14 Connection settings Connection settings Serial cable Ethernet Serial cable Ethernet Serial port COMI v IP address Baud rate 19200 W Port 502 Data bits Stop bit Parity g None To use serial cable connection you need a GCAS feature Modbus over serial to be included in your GCAS licence Similarly to use Ethernet cable you need a GCAS feature Modbus over TCP For serial cable connection enter the appropriate COM port where the cable plugs to followed by the baud rate data bits stop bit s and parity bit These configuration should match the same configuration as your GC devic
383. select Import Data Manual Entry This menu displays the Manual Data Entry form If you do not see this menu your GCAS user account may not have the action permission for manual entry or your GCAS licence does not include Manual Data Entry Contact your GCAS administrator Action Import Data Import Data CSV Set Status Add Comment Send to Correlation Calculator Print Preview Print IS0 10723 Page 72 of 388 GCAS Desktop Manual Guide rev 14 i Manual Data Entry Device Test4 Footprint timestamp June 2014 B l09 03 27 Ee opoe Have Response Factor Have Retention Time Response factor walues Retention time gas order are readily available O Follow RF gas order D are inverse of these values Use default sort order are calculated from peak area Methane LF Heptane Nitrogen Propane CO AF i Butane Ethane F n Butane Propane AF Neopentane i Butane RF i Pentane n Butane n Pentane Neopentane RF Hexane i Pentane RF Nitrogen n Pentane KF Methane na Always double check for typing errors before clickim Save Cancel ay typing g First things first set the footprint or calibration timestamp accordingly Next you can begin entering RF and RT values in the available input fields If your footprint or calibration data does not have retention time data untick Have Retention Time This will disable all RT input fields Similarly if you do not wish to enter RF values untic
384. ses an error code We make a distinction between error codes and exceptions Error code indicates an error in the Modbus protocol communication The cause may be the computer the GC device or the medium between computer and GC device Exception by definition in technical term is an error caused by problems inside GCAS Desktop itself and not your GC device Both error codes and exceptions are logged in the connection log 25 3 1 About Error Codes If there was error in Modbus protocol communication during data capture the GC Connect form will display the error code above the countdown For example the most common error is 0x00000044 TCP IP connection error This error happens only in TCP connection not in serial cable connection and indicates problem such as congestion corrupted TCP packet wrong TCP checksum or Wi Fi connection between your computer and GC if your GC supports Wi Fi is experiencing problems Another common error code is 0x00000045 TCP IP connection was closed by remote peer This error code indicates problems like the Ethernet cable is unplugged or the main power to GC was cut Some error codes are temporary such as 0x00000084 Reply time out By temporary it means the error may vanish by the next poll However some error codes are persistent which means the error code will be repeated during next poll and next poll and next poll until you stop the connection This is particularly bad for unattended mode In order
385. sion of GCAS Desktop supports C1 methane to C10 decane GCAS Web only supports C1 to C7 heptane Notation Alternative Gas name Formula notation merme CH fehene GH Pome GH C2H6 C3 NA l PrN Cs 5 6H14 7H16 gH oe rc T T CO ae se O a In case of butane and pentane C4 without prefix N or I refers to n Butane while C5 means n Pentane Page 59 of 388 GCAS Desktop Manual Guide rev 14 7 Footprint and Calibration Data A calibration data is one record or snapshot of gas properties of the analyte read by the GC device GCAS records two main properties which are the response factor RF and retention time RT GCAS assumes the response factor is calculated using peak area formula peak area RE ____ _ mole composition If your GC device uses peak height formula that is peak height divided by mole composition unfortunately your GC device is not compatible with GCAS Or to the least the RF chart on both Footprint form and Calibration Data form may not help you in the analysis of GC health status Some GC devices use the inverse formula which is mole composition divided by peak area These devices are still compatible with GCAS Desktop however with a few differences RF chart will descend downwards instead of the usual ascending shape RF values will be somewhere within the order of 10 to 10 8 instead of 10 to 10 Correlation charts will show a downward slope or negative
386. solution Minor updates for contents here and there Updated screenshots Page 16 of 388 GCAS Desktop Manual Guide rev 14 Revision 4 Finalised on 6June 2014 Based o Revision n GCAS Desktop version 1 0 4 114 Skipped revision 3 because revision 3 is only available in the HTML version of manual guide Included support for Daniel C9 and C10 GCs Updated chapter 4 6 7 8 10 11 12 13 and 18 Updated screenshots 2 Finalised on 29 April 2014 Based on GCAS Desktop version 1 0 2 37 Added chapter 1 3 Supported GC brands Added chapter 8 Mole composition Included support for ABB GCs Updated chapter 10 12 and 18 Reserved chapter 9 Lag time calculator Corrections on chapter 14 3 Manage groups Expanded chapter 17 into 17 1 Diagnostic mode and 17 2 Bug report wizard Updated screenshots Corrections on grammar and spelling errors Revision 1 Finalsed on 20 February 2014 Based on GCAS Desktop version 1 0 0 1 First release Page 17 of 388 GCAS Desktop Manual Guide rev 14 1 Welcome Thank you for choosing GCAS Desktop as a companion for your gas chromatograph devices These help files provide guides about GCAS Desktop operation 1 1 What GCAS is GCAS Gas Chromatography Analysis Software is a software tool specifically designed for GC Gas chromatograph conditional based monitoring The main purposes of the monitoring method embedded in the software are
387. st_c9 7 1 data capture operation is running in background Search device PIDez ai Online Ready Page 315 of 388 GCAS Desktop Manual Guide rev 14 When multiple data capture operations are running in background these two buttons become Show all and Stop all 25 2 6 Stop Capture and Commit Data Click the E Stop button to stop the operation Note If you click Stop button when GCAS Desktop is in the middle of polling GC device GCAS Desktop waits two seconds in order to allow the poll to finish before terminating the connection If the poll takes very long e g on an extremely slow network or over VPN connection GCAS Desktop waits for additional two seconds up to five times 10 seconds maximum Connection settings Device settings Data retrieval options _ Enable unattended mode Serial cable Ethernet Test_C9complete Poll every 15 seconds w IP address 192 168 2 103 Protocok eee Mat 502 Slave ID 1 D Timeout 5000 ms Data destination Push to database O Save to CSVs Poll delay 100 ms Change destination files gt START A Mole composition unnormalised C Show delta to previous row Stream Timestamp Heptane Propane i Butane n Butane neoPentane i Penta 2014 05 06 130136 _ Detect changes on RF only Methane RF Nitrogen RF Carbon dioxide RF Ethane RF Propane RF endin Footprint v 2014 06 06 12 57 21 5145340 6199312 7243368 3332248 a E Calibration data _ w 2014 0
388. start capture operation of first GC Connect form in the queue will be delayed by the specified amount of time If you tick Delay the start of subsequent GC Connect forms the start capture operation of the second third and the rest of the queue will be delayed by specified amount of time one after another Furthermore if you tick Randomise within the delay between GC Connect forms is randomised within the specified delay For example let s use 1 minute delay Without randomisation GCAS Desktop will start GC Connect forms in the given order exactly 1 minute one after another With radomisation the delay is randomised between immediate 0 second to 1 minute As an example GCAS Desktop may start the second GC Connect form after 27 seconds the third GC Connect form 56 seconds afterwards and the fourth GC Connect form 43 seconds after the third Hit Start timer to begin the delay start While the timer is running a command link Cancel will appear to the right side of Start timer button Click Cancel to stop the timer and abort the delay start Delay first GC Delay subsequent What would happen Connect form GC Connect forms check box Is check box Is Checked 10 Checked 1 minute 1 GCAS Desktop waits 10 minutes then starts the first minutes GC Connect form 2 GCAS Desktop waits 1 minute then starts the second GC Connect form Page 327 of 388 GCAS Desktop Manual Guide rev 14 3 GCAS Desktop waits 1 minute then starts
389. stop all data capture operations and abort any GC Connect form in reconnecting state If there are some GC Connect forms being hidden the Comms menu displays another menu called Reveal Hidden GC Connect Forms which pretty straightforwardly will unhide all hidden GC Connect forms Page 326 of 388 GCAS Desktop Manual Guide rev 14 25 4 1 Start Multiple Data Captures with Delay This menu is accessible if you open multiple GC Connect forms but haven t started some or all of them Configure every GC Connect form to the correct parameters such as IP address or serial port poll interval data destination and so on However leave them and do not start any data capture operation Next go to the Comms menu gt Start All Connections gt With Delay This menu displays the GC Connect Delay Start form GC Connect Delay Start gt E Queue of idle GC Connect forms _ Delay the start of first GC Connect form by SEAFMC2015 demo2 t Move up 10 Test4 Delay the start of subsequent GC Connect forms by minutes Refresh 1 minute Randomise within Tick all Tick none gt START TIMER On the left side there is a list of idle GC Connect forms Those with check mark will be queued for delay start Reorder this queue by selecting one item and click Move up or Move down GC Connect form at the top will be started first and subsequently so according to the order of this queue If you tick Delay the start of first GC Connect form the
390. t Propane be oO Clipboard Ta i Butane n Butane neoPentane i Pentane n Pentane Hexane Nitrogen Methane Carbon dioxide Ethane 1 2 3 4 2 6 T ts 9 10 11 k rh 13 14 15 16 17 18 Cance 19 The Hl Copy button does the opposite it copies register addresses from GCAS Desktop so you can paste it onto Microsoft Excel spreadsheet The greyed out fields if any are also included in the copy Unnormalised total operation 25 1 5 What if my GC device cannot provide data for some gas Depending on the make model and configuration of your GC device the device may not be able to provide some data For example a GC device does not provide data for unnormalised total of mole composition 25 1 5 1 GC device does not provide retention time data Simply untick Read retention time as described in chapter 25 1 3 The same applies if the GC device does not provide whole set of response factor data you would untick Read response factor Page 306 of 388 GCAS Desktop Manual Guide rev 14 25 1 5 2 GC device does not provide response factor data but it provides peak area Unfortunately GCAS Desktop does not have the tool to calculate response factor from peak area and mole composition right on the GC Connect form We suggest two workarounds 1 Do not capture live data through GCAS Desktop but obtain the data of peak area through other means e g via the bundled software or report output Later go
391. t Calibration Data Response factor chart and retention time chart display the calibration data values in red and footprint values in blue You can hide the footprint blue line or bar by unticking the Show footprint check box on top of footprint timestamp display Unlike the other two charts RF MW logarithm charts only calculate the logarithm regression line and R value of calibration data red record only Page 64 of 388 Show Single point RF Response Factor Response factor 3 E a a Footprint Calibration data MW RF Log Charts C1 C2 C7 C3 C4 C5 C6 R 0 9998 R 0 9611 0 93 1 18 143 1 68 193 2 18 1 57 1 77 1 97 Retention Time Heptane Propane i Butane n Butane neoPentane i Pentane n Pentane Hexane Nitrogen Methane co Ethane 0 50 100 150 200 Retention time s Page 65 of 388 neaPentane GCAS Desktop Manual Guide rev 14 Pentane n Pentane Hexane Heptane C1 C2 C3 C4 C5 C6 C7 R 0 9927 1 39 1 64 1 89 B Footprint B Calibration Data 2528 2663 207 9 272i ar70 303 6 ce 3261 ERE 250 300 350 GCAS Desktop Manual Guide rev 14 In the same way as Footprint form switch to table view to see exact numeric values Here you will see the comparison to footprint value side by side Charts Tables Health status Comments Calibration data Footprint Component i RT Component 3 RT Methane Nitrogen Paice diets 7 316 314 187 24 Ethan
392. t calibration certificate Uncertainty calc settings Which footprint to use Display style Miscellaneous x MAp P How many calibration data to include From footprint to today C Latest 30 days Follow last uncertainty configuration My Device w R 0 9967 26 Oct 2014 Cancel This tab configures several inputs used by uncertainty calculation of all devices If your GCAS licence doesn t include Uncertainty Calculation this tab only displays a text your GCAS licence does not include uncertainty calculation Some uncertainty calculation inputs always follow last uncertainty configuration like uncertainty coefficients and ISO 6976 settings Last uncertainty configuration is the configuration you have set on the input pages the last time you opened Uncertainty Calculation form Every device has its own last uncertainty configuration Which calibration certificate to use Choose whether to use latest certificate of each device or to follow last uncertainty configuration of each device Which footprint to use There are three choices Use latest footprint use first footprint found after the certificate timestamp or follow last uncertainty configuration If you selected first footprint after certificate but there are no actual footprints after certificate timestamp GCAS Desktop falls back to the latest footprint If a device doesn t have any footprints Ureproducibility won t be included in the uncertainty calculatio
393. t point Footprint Footprint 7 July 2014 1 December 2014 l I o j l E l l NN A l f l g i i 5 l I l i l l Calibration K I in use I l l l Date Jul Aug Sep Oct Nov Dec Jan Feb Mar 2014 2014 2014 2014 2014 2014 2014 2014 2014 This picture ts animated in the HTML version of GCAS Desktop Manual Set how many days or how many records to travel backwards The default is 30 days You can go backward to as far as 2 years 730 days At some occasions the GC devices has 30 data in one day you might consider to go backward 30 records not days When GCAS Desktop travels backward it may find a footprint before it fulfils the specified x days or x records Decide what GCAS Desktop should do when it bumps into a footprint whether to stop or to continue The default is stop at footprint trim at footprint By stopping at footprint the number of calibration data included in the calculation is less than x days or x records but GCAS Desktop does not include data before the footprint which are usually calibrated under different configuration 13 2 7 Plot Range Plot range From 12 November 2014 00 00 ly to 12 December 2014 09 08 Ir Set the plot range start and end date GCAS Desktop displays a warning label if the footprint reference is a pinned footprint and that footprint occurs within this plot range or after this plot range Page 175 of 388 GCAS Desktop Manual Guide rev 14 13 2 8 Mi
394. t when you are working offline because database structure of full database and temporary database are different eB gt Sa Ge Export data from GCAS database Choose an export type d g Ti Export to CSV Copy to Excel Export to MS f Export to SOL Access Compac Export data to a Microsoft SOL Server Compact Edition CE database The export result file is a complete GCAS database i e you can use the sdf file as a local offline database You cannot export to Microsoft SOL Server Compact Edition while working offline Pa Next ee Tick all GC devices you would like to have their data exported Page 358 of 388 GCAS Desktop Manual Guide rev 14 S amp S eu Export data from GCAS database Tick all GC devices you would like to have their data exported File Exhibition sdtf Tick all j Platform A Ad Tick none A2 Ex all a Platform B i Collapse all B2 a Platform C lt 1 C2 _ Renamed workspace Choose the data kind and a date range to export If you tick Also include records marked as inactive inactive footprints calibration data mole composition data calibration certificates uncertainty coefficients MLC coefficients and lag time data including comments for them if selected within the defined date range will also be included in the export A eu Export data from GCAS database Choose what kind of data to export and the date range n Range Footprints
395. ta analysis module Show or hide comments for ISO 6976 trends Show or hide comments for uncertainty trends 15 3 Filter Comments by Date When you open the Comments form for the first time it loads comments from the last three months You can change the date filter by selecting the desired filter on the dropdown or choose Custom Range and enter the desired date interval on subsequent dialogue box Gli fell A aT B amp Search ilter A A sc Filter by date of topic from 1 year ago 15 4 Search Comments Type the search term in search box and then click Search The search box accepts any of the following e Words in user comments e Usernames e Full date in British English format e g 07 February 2014 this will search for any matches in both Date of Topic and Date Posted column Test Filter by date of topic from 1 year ago s Filter A E Ei w isol A A Pes Search fs pe Any match will be highlighted in yellow If you do not see any results while you know there should be some make sure the active filter does not hide some comment types or try changing the date range To finish searching click 2 Clear search results 15 5 Delete Comments In order to maintain auditability GCAS users are not allowed to remove any comments Not even GCAS administrator can erase comments Some scenarios tolerate comment deletion For example you post comment
396. tal as one message box like this one Error code Error type SqlCeException 0x80004005 Error message The column name is not valid Node name if any Column name LASTMODIFIED Database Sync Error Log Exception type DBconnectExcept ion Sync stage DBconnectExcept ion Error message Recordset 25 2013 09 24 15 20 00 49 1 1 NULL Error 080004005 Cannot add or update a child row a foreign key constraint fails gcas t_fp CONSTRAINT FK_FOOTPRINTS FOREIGN KEY DEVICE_ID REFERENCES t_dewice DEVICE_ID Recordset 26 2013 09 24 16 55 00 49 2 1 NULL Error 0x80004005 Cannot add or update a child row a foreign key constraint fails gcas t_fp CONSTRAINT FK_FOOTPRINTS FOREIGN KEY DEVICE_ID REFERENCES tdevice DEVICE ID Recordset 27 2013 10 09 13 17 58 30 1 1 MULL Error 0x80004005 Cannot add or update a child row a foreign key constraint fails gcas t_fp CONSTRAINT FK_FOOTPRINTS FOREIGN KEY DEVICE_ID REFERENCES tdevice DEVICE ID Recordset 3 2013 09 24 15 20 00 49 28 200000000 315 800000000 62 200000000 20 200000000 90 000000000 103 900000000 132 100000000 146 800000000 397 500000000 333 800000000 368 300000000 329 200000000 Error 0x20004005 Cannot add or update a child row a foreign key constraint fails qeas t_rt CONSTRAINT FK_RESPONSE_TABLE_VALUES FOREIGN KEY DEVICE_ID REFERENCES t_device DEVICE_ ID eigne 5
397. tart over Note Maximum number of entries in comparison list is 15 entries GCAS Desktop will alert you if there are duplicate comparison entries A duplicate means same GC device same stream number same MLC single point switch if you have SO 10723 17 2 3 Start Graphing Go _ Equal scaling Mole fraction Clear MLC cache When everything else are correct simply click Go GCAS Desktop loads the required mole composition data and renders the chart The Go button turns into Refresh button unless you change the selected gas comparison date range devices stream numbers or single point MLC switch Equal scaling if ticked forces all comparison entries to use the same normalisation scale Tick this option if you are comparing multiple devices having different scales such as this GC uses fraction and that GC uses percentage More about scaling equalisation on chapter 17 3 2 Users with SO 10723 feature in their licences see an additional command link Clear MLC cache This clears the cache used by ISO 10723 conversion The cache contains MLC coefficients calibration Page 206 of 388 GCAS Desktop Manual Guide rev 14 certificates single point RF MLC RF and MLC constraints Click this link if you notice the multilevel calibrated streams are graphed incorrectly Once the MLC cache is emptied refresh the chart The chart legend lists the device tag name and the stream numbers Multilevel calibrated streams are in
398. te exe 2 Algebra dll IG Register URL bat File is missing This notification does not prevent you from using GCAS you could still dismiss the notification through OK button and log in to GCAS as usual However there is a higher risk of GCAS crashing at some point later Especially when there is a dll file missing this will raise DL1 Not Found Exception or File Not Found Exception error message later on If you see this warning every time you start GCAS Desktop the first step to try is to reinstall GCAS Desktop Have your registration key and your licence string or QR code ready in case you need to reactivate GCAS Desktop again Should the reinstall action provides no remedy to the problem you can disable this feature by running GCAS Desktop with an additional disablefilecheck parameter You might want to modify the shortcut to GCAS Desktop to include this additional switch Page 31 of 388 GCAS Desktop Manual Guide rev 14 Type the name of a program folder document or Internet resource and Windows will open it for you Page 32 of 388 GCAS Desktop Manual Guide rev 14 2 Database GCAS Web and GCAS Desktop reads and stores data into GCAS database This chapter explains further about GCAS database 2 1 Where Your Data is Stored There are three different choices of data storage 1 i Vigilant central database Data is stored in database server s maintained by i Vigilant Technologies Customers using this
399. tely Note You cannot add the same gas more than once Should the selected gas has existed in the data table section GCAS Desktop presents a warning message You cannot put negative number in response factor entry field because logarithm of negative numbers are undefined To remove one or more entries click row header s to highlight data row s you wish to delete Next press on your keyboard The corresponding dot s on the chart will disappear as well RF MVY Calculator Any Calculator Molecular weight Response factor Methane 4 284 540 Propane 7 090 170 You can edit the response factor value should a mistake happened Double click the response factor cell enter the correct value then press to commit The corresponding dot on the chart shall move upwards or downwards according to the new response factor value Page 220 of 388 GCAS Desktop Manual Guide rev 14 RF MW Calculator Any X Calculator Molecular weight Response factor Whenever there are minimum three entries in data table GCAS Desktop computes the regression line and calculates their correlation The R value is displayed at the top of the chart Regression line and R value are also updated after changes of existing RF values are committed If you remove several entries leaving less than three in data table both regression line and R value disappear from the chart RF MW Calculator Any X Calculator p Molecular weight Resp
400. temporary database which is a subset of GCAS database can be exported If you choose to synchronise your data for the latest 6 months for instance you cannot export data beyond 6 months ago Page 343 of 388 GCAS Desktop Manual Guide rev 14 28 1 Export to CSV This exporter module exports GCAS data into a standard comma separated value CSV spreadsheet Choose Export to CSV to begin Note You need the GCAS feature Export to CSV to be included in your GCAS licence in order to use this feature SO Export data from GCAS database Choose an export type Sew Export to CSV CopytoExcel ExporttoMS Export to SQL Access Compact Export data to a standard comma separated value spreadsheet Tick all GC devices you would like to have their data exported Page 344 of 388 GCAS Desktop Manual Guide rev 14 S amp S eu Export data from GCAS database Tick all GC devices you would like to have their data exported File Exhibition sdtf Tick all j Platform A Ad Tick none A2 Ex all a Platform B aa Collapse all B2 a Platform C lt 1 C2 _ Renamed workspace Choose the data kind and a date range to export If you tick Also include records marked as inactive inactive footprints calibration data mole composition data calibration certificates uncertainty coefficients MLC coefficients and lag time data including comments for them if selected within the defined date range will also be i
401. that never expire Lifetime licences are intended for customers who purchased retail copies of GCAS Desktop i e one off purchases On the contrary subscription licences are licences that renew periodically They are intended for customers with subscription plan Depending on customer preference renewal period can be monthly quarterly semester annual or biannual Customer with subscription licence should check for licence update periodically or leave the automatic licence update on in order to ensure continuous access to GCAS Desktop Trial licence is a subtype of subscription based licence for new and prospective customers Depending on customer request i Vigilant Technologies Limited issues trial licences which typically last between one to three months Usually trial licences carry all GCAS features with a limited maximum number of GC devices Within their trial period customers can upgrade their licences to standard subscription licence with select GCAS features and enough number of GCs to suit their needs Instant trial licence is more specific type of trial licence This licence is issued only once per computer and only valid for 4 day trial An instant trial licence is upgradable to a regular trial licence see the previous paragraph which later on still upgradable again to a full licence Read more about instant trial 1 4 2 How Many PCs When you purchase GCAS Desktop from i Vigilant s website the website asks for informati
402. the date of latest mole composition record is displayed on the dashboard tile If your GCAS licence doesn t have Live Data Analysis this option is not available e Open Uncertainty Calculator form This action opens Uncertainty Calculator form for the device represented by the dashboard tile but that s it The settings at the Uncertainty Calculator form may be different from the settings defined by the uncertainty calculation settings tab hence may produce different uncertainty values Both dashboard tile and the Uncertainty Calculator form should produce the same values if everything on uncertainty Page 198 of 388 GCAS Desktop Manual Guide rev 14 settings tab was set to follow last uncertainty configuration If your GCAS licence doesn t have Uncertainty Calculation feature this option is not available 16 2 Overriding Rules Rules for date of last calibration and date of last mole composition record are overridable at device level or workspace level Rules for R and uncertainty are not however Overriding at device level causes the dashboard tile of this device to ignore the general date rules and use the overridden date rules instead Overriding at workspace level causes all dashboard tiles under this workspace to use the overridden date rules For example you have set the general rule for date of last calibration stating all devices who were calibrated past 3 days ago shall be red However there s this one platform called Workspac
403. ties then browse the devices to compare and add them to the comparison list select which stream of these devices and finally click Go 0 to start graphing 21 2 1 Plot Range and ISO 6976 Properties F E Ig DL r e i A LET Qa Fori bey mg ISQ 6976 output to compare Calorific value id From 06 Oct 2015 E lo Oct 2015 Hr Base pressure Combustion metering temperature ie ore be ia First thing first select which ISO 6976 output to compare The default selection is calorific value CV but other options are molar mass sum Wobbe index relative density and standard density Going down there are date and time pickers to set the plot range Scroll down once more and you see the ISO 6976 properties base pressure and combustion metering temperature pair Default base pressure is the atmospheric pressure 1 atm GCAS Desktop supports six combustion metering temperature pairs which are e 0 C 0 C e 15 C 0 C combustion temperature 15 C base temperature 0 C e 25 C 0 C e 15 C 15 C the default e 20 C 20 C e 25 C 20 C Page 247 of 388 GCAS Desktop Manual Guide rev 14 21 2 2 Devices and Comparison List Add devices to list Select stream to compare ISO 10723 sample HFRS Test PES Test Show Devicetag Stream MLC gt Device tree view is on the left It lists all your workspaces and devices within each workspace The gr
404. tilevel calibrated RF Fill O for single point or 1 for MLC If you don t have SO 10723 in your licence always fill O zero Methane retention time Nitrogen RT Carbon dioxide RT Ethane RT Propane RT i Butane RT n Butane RT Neopentane RT If your device doesn t read neopentane fill in O zero i Pentane RT n Pentane RT Hexane RT Heptane RT If your device doesn t read heptane fill in O zero Octane RT If your device doesn t read octane fill in O zero Nonane RT If your device doesn t read nonane fill in O zero Decane RT If your device doesn t read decane fill in O zero In case your GC device does not provide RF data at all or no RT data at all set all RF values or RT values to 1 negative one This will cause GCAS Desktop to regard these data as incomplete footprint or calibration data RF or RT chart will not be rendered instead of being graphed as all zeroes Page 71 of 388 GCAS Desktop Manual Guide rev 14 7 4 3 Manual Entry Aside from text and CSV import you also have an option to enter the RF and RT values by hand Manual entry also provides additional options to accommodate some GC devices which calculate RF value using the inverted formula i e mole percentage divided by peak area or GC devices providing only the data of peak area Nevertheless this method is the least recommended way to import data because it is very suspectible to human error Open the action menu and
405. tionally make sure that Microsoft SQL Server Compact Edition v4 0 has been installed on your computer it is already a pre requisite anyway Otherwise the Export Wizard will raise an error What included in the export result will be The information about of the selected devices in wizard step 1 The agreement records for these devices Analysis parameter of these devices Footprint and calibration data of these devices if selected in wizard step 2 Mole composition data of these devices if selected in wizard step 2 oo ee YS Calibration gas certificates of these devices if selected in wizard step 2 Page 357 of 388 GCAS Desktop Manual Guide rev 14 7 Uncertainty coefficients of these devices if selected in wizard step 2 8 Multilevel calibration coefficients of these devices if selected in wizard step 2 9 Lag time records of these devices if selected in wizard step 2 10 Comments for these devices if selected in wizard step 2 11 The groups to which these devices belong 12 The workspaces belong to these groups 13 Login data of all users who joined these groups yes they can log in to the exported database file too 14 User profile data of all users who joined these groups 15 All user types and roles including custom ones 16 All menu permissions and action permissions within the selected date range Choose Export to SQL Compact to begin You cannot export to SQL Compac
406. tions Options Plot from 01 Sep 2011 00 00 E to 05 Nov 2011 00 00 E Calculate x and o from 25 records on each footprint onwards All records on each footprint onwards What being displayed Drag arectangleto Zoom _ Select ae E s x 2 There are three options for mean and standard deviation calculation a x records from footprint default x 25 records Mean and twice standard deviations are calculated from first x records default is 25 after each footprint fi SV Soe r Mey a Pb AT Je E L p Ii en L L t p Il Mean and standard deviations are calculated from these x first records after footprint Mean and standard deviations are calculated from these x first records after footprint Special case if you are drawing RF or RT deviation trend and you have chosen a particular footprint as a comparison base this option will calculate the mean and twice the standard deviations from x records after that footprint only Alare fmm r h BEW 2 m e n Oe lew Tootprint ew TOOTprint i I Al NUAN WANNA MA Y SSO N Mean and standard deviations are calculated from these x first records after the selected footprint Page 128 of 388 GCAS Desktop Manual Guide rev 14 b All records from footprint Mean and twice standard deviations are calculated from all records between footprints New footprint New footprint New t OOoTD l WwW TOODO na A A V M
407. tive Sets the MLC flag bit of all records within the X axis range of the selection area as single point RF or MC Sets the MLC flag bit of all records within the X axis range of the selection area as multilevel calibrated RF or MC Sends the averaged mole composition value of each gas of all records contained inside the selection area to ISO 6976 Calculator The ISO 6976 output values may be different from the next menu sending to ISO 6976 Trend and then activating the mean and standard deviation lines Loads ISO 6976 Trend form and instructs it to plot the ISO 6976 values for mole composition records contained inside the selection area Sends the averaged RF value of any gases that intersects with the selection area to Correlation Calculator For example if your selection area contains methane and ethane line only methane and ethane are sent to Correlation Calculator Their RF values inside the selection area are averaged and then sent Sends the averaged RF value of all gases of all records contained inside the selection area to Correlation Calculator Page 137 of 388 GCAS Desktop Manual Guide rev 14 Send to Mole MC ISO 10723 Sends mole composition values of the Composition requires only and Data selected gas of all records contained inside Comparison one gas Comparison the selection area to Mole Composition selected Comparison then instructs the form to compare the single point versus MLC composition of t
408. to Footprint form or Calibration Data form open the Action menu and choose Import Data Manual Entry Select the third option Response factor values are calculated from peak area and enter the data Have the component data table or calibration gas certificate ready because you will also need to input the mole percentage values Click Save and GCAS Desktop will calculate the response factor values Unfortunately this workaround is effective only for one single record Inputting multiple records through manual entry is a tedious work and very error prone 2 Designate the RF register addresses for peak area and run the data capture as usual But never send the incoming data directly to database use the option Save to CSVs instead After the data capture session ended you can convert the peak area to RF values in the CSV file using your favourite spreadsheet editing software Afterwards import the CSV 25 1 5 3 GC device does not provide unnormalised total for mole composition streams Define a special register on your physical GC device and hard code its value to 100 or any scale you like 100 is for percentage Use two sequential registers if you are on 16 bit Modbus On GCAS Desktop set the register address for unnormalised total to the address of this special register Repeat this step for every defined stream 25 1 5 4 GC device does not provide RF or RT data of one or several particular gases Define a special register on your physi
409. to avoid that GCAS Desktop introduced automatic connection restart and automatic connection termination This feature is turned on by default and you will go to the Advanced GC Connection Preferences dialogue in order to configure which error codes trigger the automatic restart or termination 25 3 2 Advanced GC Connection Preferences Go to the Comms menu gt Advanced Preferences This menu brings the Advanced GC Connection Preferences dialogue Page 323 of 388 GCAS Desktop Manual Guide rev 14 Advanced GC Connection Preferences ES a Restart GC connection if these errors are encountered during poll 00000000Z Illegal state error C0000004 TCP IP connection error 45 TCP IP connection was closed by remote peer Remove from list Clear selection Or add another error code hy dd lf connection restart failed wait 1 minute before another restart attempt and stop retrying after 30 w attempts Terminate GC connection if these errors are encountered during poll Ox000000 46 Socket library error Ox00000086 Invalid MBAP pointer Remove from list Clear selection Or add another error code This dialoge configures the automatic connection restart and automatic connection termination To get help on automatic connection restart go to chapter 25 3 3 To read more about automatic connection termination head to chapter 25 3 4 25 3 3 Automatic Connection Restart Automatic connection restart is a featu
410. top Manual Guide rev 14 Show Single point RF Response Factor e bri S 60 000 I ay Lr to S 40 000 z 7 LL at Wa Single point RF has the familiar graph as discussed so far it has to be ascending and the values are in the range of millions to hundreds of millions However multilevel calibrated RF is different All values are close to one 1 0 therefore its chart is somewhat horizonally flat Multilevel calibrated RF has no much use as it is not usable for correlation calculation but you can easily detect anomalies if the chart is not flat ISO 10723 conversion for footprint calibration data requires 1 A multilevel calibration MLC coefficient set installed before the timestamp of the footprint calibration record and 2 An active calibration gas certificate installed before the timestamp of the footprint calibration record If these two conditions are not met the footprint or calibration record is said to be not convertible For calibration data these conditions must be fulfilled for both the calibration record itself and the preceding footprint GCAS displays a A warning icon next to the MLC dropdown selector if your footprint or calibration data is not convertible also if the calibration data is convertible but its preceding footprint isn t In the latter case the MLC coefficients are between the footprint and calibration record timestamp Click on the warning icon to see the
411. tor computes the lag time and displays the calculation result in the list view on the right hand side Total lag time is displayed in bold face Lag Time Calculator Global parameters Pressure letdown stages GC time Lag times Ist 2nd 3rd 4th 5th GE Add stage Stage Sample stub Stub to 1st regulator Line temperature 10 C w ist regulator to 2nd 2nd regulator to 3rd 3rd regulator to GC Stage name Stub to 1st regulator Line pressure 60 bar gauge Line compressibility 0 91864 e g from AGA amp GC analysis time Tube inner diameter 8 mm Total lag time Tube length 4580 Bypass flow 5 Remove this stage Prev Global parameters Next GC time gt Calculate Click Clear calculation results to empty the list and start over Page 292 of 388 Lag time seconds 321 095 151 439 266 117 21 819 604 875 475 000 1 840 345 Lag time canonical 00h 05m 21 095 00h 02m 31 435 00h 04m 26 115 00h 00m 21 815 00h 10m 04 875 00h 07m 55 005 00h 30m 40 345 Clear calculation results GCAS Desktop Manual Guide rev 14 23 2 The Lag Time Form Under construction Lag Time form is a planned record viewer form of lag time records tied to GC devices Because device bound lag time calculation is not yet finished Lag Time form is not yet available When this feature is implemented Lag Time form will be accessible from the View menu One lag time record may survive for years because users n
412. trend chart the summary also includes differences between the two GCAS Desktop looks at the X axis range only Data points excluded by the selection rectangle having Y axis values outside of selection rectangle are also included for statistical calculation Literally puts a rectangular frame around the selection area for presentation purpose only CV Trend Removes all rectangular frames created through Frame This Selection menu As it says this menu sets all underlying mole composition records within the selection area as inactive Once it s done the ISO 6976 trend chart will have a gap on it and the mean standard deviation values are invalidated Refresh the chart to get the correct values Page 241 of 388 GCAS Desktop Manual Guide rev 14 20 9 Other Visual Cues Set the chart to zoom mode Click anywhere on the chart to place these crosshair cursors These dotted pair of line acts as a ruler to compare Y axis values between several data points To remove them click Hide crosshair cursors CV Trend 11 00 12 00 13 00 14 00 Hover your mouse pointer over a data point to show a tooltip about its value CV Trend CV CV at 13 June 2015 14 10 62 764885 MJ m 13 30 14 00 14 30 15 00 Or click Show values to display values on labels CV Trend 62 8102 62 7945 27493 oeir y AE 62 7239 62 6542 627910 62 7255 62 6058 62 6785 62 6507 13 10 13 20 1
413. ts on the chart We do not recommend to display value labels on line charts with over 100 dots because it will clutter the chart area Too Many Data Points These comparison entries have over 100 dots on the chart which may clutter the chart even more if you display their values Test stream 1 Test stream 1 Do you want to continue displaying labels for these devices This action may also cause GCAS to appear not responding for a few seconds Recommended No 62 6 CV comparison MJ m Device Stream 62 4 IE a a n ade a a a L Tet 1 1000 1030 1100 1130 12000 1230 13 00 1330 1400 1430 1500 1530 These dashed lines are called cursors Cursors appear when you click on a chart or as a remnant of zoom operation Cursor may act as a ruler line to compare Y axis values of two data points Click TX Hide crosshair cursors or right click the chart and select Hide Crosshair Cursors to hide these lines from view Page 259 of 388 GCAS Desktop Manual Guide rev 14 62 23 CV comparison MJ m Device Stream S a ire i 62 03 LIEN r Te e AAt N A Tet 1 N74 i Te 1 M 61 83 61 63 11 15 11 30 1145 12900 1215 12 30 1245 13 00 21 3 8 Colourblind Assistance To aid users with colour blindness protanopia and deuteranopia GCAS Desktop provides an alternative colour scheme for the chart Use the de Colourblind assist button to switch colour scheme 62 40 CV comparison M
414. ttings on the toolbar Alternatively return to GCAS Desktop main window and go to the View menu gt Dashboard Settings This shall bring forth the Dashboard Settings dialogue ee Dashboard Settings Health status to display Health status to display Available status choose one These will be displayed rnax 4 Uncertainty of MW composition Lowest R of last calibration Uncertainty cale settings Uncertainty of Wobbe index Move up Uncertainty of relative density Date of last calibration Uncertainty of standard density Date of last mole composition Rules Move down Display style Miscellaneous My Device w R 0 9967 U CV 0 1769 27 Oct 2014 Reload Dashboard after click OK i Cancel Dashboard Settings dialogue has five tabs and each of them is explained in its own subchapters below A preview tile is available at the left region reflecting new appearance as soon as you change a setting 16 1 1 Health Status to Display List box on the left contains all available GC health statuses to display If you see some items missing the missing items may require a GCAS feature in your GCAS licence No Health status CAS licence requirement i 7 Date of last calibration record Date of last mole composition record Live Data Analysis Click an item and click Show to display the health status on the dashboard tile Dashboard tiles hold E Uncertainty of standard density Uncertainty Calculation maximum 4
415. u can rename it via Rename button or delete it through the Delete button Note You cannot delete System Administrator user type and user role You cannot delete a user type or role if there are users of this type or role Change the user type or role of these users before deleting the type or role Do not forget to assign menu permission for the new user type or action permission for the new user role later Page 333 of 388 GCAS Desktop Manual Guide rev 14 27 3 Manage Groups Go to the Administrator menu gt Groups and Workspaces to manage groups This menu displays the Groups form which lists all groups registered in the GCAS database Note that your GCAS user account may not have been assigned to all these groups even though you are a GCAS administrator Click Show my groups on the toolbar to highlight which groups are assigned to your user account Ch New Edit Delete ID Group Name Workspaces Agreements training 1 group Your user account is assigned to this group Note The last column Agreements lists the number of agreements linked to the group Agreements are no longer part of GCAS Desktop However the last column is preserved to maintain compatibility with older GCAS local offline databases which were used before GCAS Desktop version 1 4 It will be gone in GCAS Desktop version 2 where the database uses a completely new schema and won t be compatible with any GCAS 1 x databases Agreement column
416. u don t have sufficient permission to perform conversion when you select Convert To in this dialogue box Important Be extra cautious when using Convert To Performing permanent conversions on wrong record will damage the record permanently Furthermore because single point compositions and MLC compositions are similar in terms of numeric values always double or triple check before using Convert To 8 10 3 Change MLC Flag Bit Multiple Records Chapter 8 10 2 explained how to change flag bit for one record Mole composition records usually come from data capture operation thus you may need to change flag bit of tens or even hundreds of records To save your time open the Action menu select ISO 10723 and then click Mark As Bulk The dialogue box is slightly different from Set Flag Bit for Multiple Records dialogue belonged to footprint and calibration data The Set Flag Bit for Multiple Records dialogue for mole compositions lets you filter by stream number and later optionally by date or specific selections of records Page 108 of 388 GCAS Desktop Manual Guide rev 14 of this device 3 044 DEMO as multilevel calibrated mole compositions Mark 09 Nov 2014 13 49 E and 24 Jul 2015 1643 Hr of strearn 1 as 4 multilevel calibrated mole compositions w EEA m Filter by date J4 November 2014 12 29 EJ Filter by stream number 24 November 2014 13 13 select all Mark 24 November 2014 13 09 Select none C
417. uide rev 14 Main device General General rule Device Device Result Dashboard tile override rule threshold override override becomes red if last switch active active threshold calibration ts older than OFF OFF 15 days Rule is turned off Click OK to close the dialogue box and you shall see the Dashboard applies your new rules For example we overrode Device 2 to turn off its calibration date rule in the screenshot below Device 3 Device 4 Device 5 R 0 9963 R 0 5955 R 0 2791 R 0 6605 UI no certificate Ui no certificate UIO no certificate UIV no certificate UIV no certificate 09 Oct 2014 16 Sep 2014 02 Oct 2014 Law 03 Oct 2014 05 Oct 2014 16 2 2 Per Workspace Override To override date rules at workspace level right click the heading text or click the i gear icon Custome Nga 7 SF Override date rules for this workspace O U R 0 9977 R 0 9974 R 0 9947 U Cv 0 1858 Uv 0 1206 Upcy 0 4237 29 Sep 2014 H 30 Sep 2014 H 01 Oct 2014 This also brings the Override Date Rules dialoge box However this time it applies to all devices within this workspace Override Date Rules Workspace Customer X Override date rules for all devices in this workspace Make dashboard tiles red if dates of last calibration are older than days instead of 3 days Make dashboard tiles red if dates of last mole composition record are older than 4 hours date of last mole
418. uired GCAS requires a valid licence to run Please enter your licence AoW Instant 4 day trial F Activate offline Activate online 2 Offline activation does not require internet connection 3 Click Activate offline UAC prompt may appear 4 GCAS Activator window is displayed Yourcomputercode 18AB 1747 771C G For offline activation send the computer code above via email or fax to us Once you received our reply enter the licence string or the QR code image and registration key below Enter licence string 5 Tell us your computer code via email to support i vigilant com or via fax We need this code to generate your licence After we generate your licence string we will reduce your activation count by one 1 accordingly 6 Once you have received our reply either enter the licence string or load the QR code image Then enter the registration key as well 7 Licence string is a long encoded text which looks similar to this ZZPgHRyhHRqMsZijmaukdJaWlaghpZulp4SuroCR76Oum6KXogiZmJ3mkaC1 eZq2qpidn6eOp4wy l4GYrYukuHmnl6KutqqupkKqKqZyU3e brLWklouss5qgspajqoGTkRSEqeabie6GqqqRnL92obilqamk vaKsoLSsjaCegaKnrKigpaV 7uA Page 24 of 388 GCAS Desktop Manual Guide rev 14 8 QRcode jiti file looks like the following This is a standard QR code image that contains the licence string itself You can use your smartphone or any QR code scanner to verify its content 9 Click Install on GCAS Activator form 1
419. uired such as what features are available to you how many number of GC devices you can use and the expiry date Current version of GCAS operates a GCAS licence version 3 GCAS licence version 1 was used for development purposes and is now obsolete GCAS licence version 2 was used by beta test version of GCAS Desktop Although current GCAS Desktop can read GCAS licence version 2 some features will be unavailable and we strongly recommend users of licence version 2 to upgrade their licences into version 3 Customers can select which GCAS features to include in order to suit their need The features are listed here o Modules e Basic features always included Analysis parameter Footprint Calibration data and Comments e Data Analysis e Live Data Analysis e Data Comparison e Calibration Gas Certificate e Uncertainty Calculation automatically unlocks calibration gas certificate module e Uncertainty Trend automatically unlocks calibration gas certificate module too e ISO 6976 Calculator e ISO 6976 Trend e ISO 10723 e Lag Time Calculator o Device communication Page 19 of 388 GCAS Desktop Manual Guide rev 14 e Modbus over Serial e Modbus over TCP o Data import e Text Import for Daniel or ABB GCs e CSV Import e Manual Data Entry always included o Data export e Export to CSV e Export to Microsoft SQL Server Compact Edition e Export to Microsoft Office o Databases e i Vigilant Central Database e
420. up on the left pane Page 340 of 388 GCAS Desktop Manual Guide rev 14 Reassign an unassigned user to a group To reassign an unassigned user back to a group drag her to the desired group To move an existing user into different group drag the user to the new group To assign that user to multiple groups hold the Ciri key while dragging 4 User A 4 User_D 4 g Another group 4 User_Readonly 4 Another another group To remove d user from a particular group drag the user under that group from the left pane and drop them here UNASSIGNED USERS These are users who do not belong to any group To re assign these users fo a group drag the user from this list to the desired group on the left pane L User_B 4 User 27 5 Menu Permissions Menu permissions are a part of access control list ACL that controls which menu is available to each user type Go to the Administrator menu gt Menu Permissions to show the Menu Permissions form Use this form to assign privileges to each user type Please be informed that GCAS licence has higher precedence than this menu permissions Parent menu Menu System Administrator Super User General User Profile O pa v Subscriptions Accounts Action Permissions i os Page 341 of 388 GCAS Desktop Manual Guide rev 14 To grant or revoke permissions tick or untick the corresponding check box Administrator always has access to all menus Click Save to
421. ups ID Group Name Customer Owner 1 group Your user account is assigned to this group That button brings you to the Workspaces dialogue where you can manage workspaces for this group Workspaces for training Workspace name Number of devices training 2 T Rename 5 Delete To define a new workspace click Add Enter the name of this new workspace then click the red arrow to commit Workspaces for training Workspace name Number of devices training 2 new nope ae Page 336 of 388 GCAS Desktop Manual Guide rev 14 Similarly to rename a workspace you need to select the corresponding workspace on the list and then click Rename Type the new name and press on your keyboard to commit the change m Workspaces Workspaces for training Workspace name Number of devices training 2 Geass OO Delete Close To delete a workspace click the corresponding workspace on the list and then click Delete Note You cannot delete a workspace if there are devices assigned to this workspace Move them into a different workspace or delete the devices before deleting a workspace 27 4 Assign Users into Groups To assign users into groups or remove users from groups go to the Administrator menu gt User Group Relationship The menu takes you to the User Group Relationship window This form has two views user view and group view Both carry the same information but under differ
422. us bar Updating GCAS licence 24 Jul 2015 11 23 13 Status bar Ready 24 Jul 2015 11 23 13 Status bar Loading workspace Training 1 of 18 24 Jul 2015 11 23 12 Status bar Loading workspace TEST4 16 of 18 24 Jul 2015 11 23 12 Status bar Loading workspace TEST 3 15 of 18 Clear notification log 4 5 Standard Colour Palette This chapter is hidden on the HTML version of GCAS Desktop manual It only serves as a link destination target from chapters explaining alternative colour scheme for colourblind users This table lists the standard colour pallete which GCAS uses for all charts across different modules Page 55 of 388 GCAS Desktop Manual Guide rev 14 8 When colourblind assist is turned on GCAS Desktop switches to this alternative colour palette and turns on several visual assistances This is to aid users with protanopia and deuteranopia Dashed line Horizontal black dash Kad al A a S black shadow black shadow o4 715 219 Solid ine Diagonal white stipes a 33 74 193 30 42 110 Dashed ine Diagonal white crisscross a 2 0 Soidiine Sold A case 8 es eee ee black shadow 60 s 0 solide Sold Je Page 56 of 388 GCAS Desktop Manual Guide rev 14 Mean 2 std dev Solid line Not applicable Mean 2 std dev 146 162 235 Solid line Page 57 of 388 GCAS Desktop Manual Guide rev 14 5 Analysis Parameter Analysis parameters are collection of information
423. ve DATE Current computer date e g 15 September 2014 TIME Current computer time in 24 hour format e g 16 28 44 DATETIME Current computer date and time e g 15 September 2014 16 28 44 For instance this comment macro This record was set as NEWSTATUS at DATETIME Calibration gas tank is used up therefore the unnormalised total gradually declines will be replaced with actual values such as This record was set as inactive at 02 October 2014 14 24 01 Calibration gas tank is used up therefore the unnormalised total gradually declines Which you can easily verify by visiting any record included in bulk operation like this one Eene eevee sigs aes l ir i Fi Mole Composition Test p ea E Change record E Load latest record DEVICE NAME STATUS TIMESTAMP Test4 Inactive 26 September 2014 15 55 58 Refresh comment User ID Date posted Comment ae 02 October 2014 14 24 16 This record was set as inactive at 02 October 2014 14 24 01 Calibration gas tank is used up therefore the unnormalised total gradually declines ee Submit comment Page 102 of 388 GCAS Desktop Manual Guide rev 14 To switch back into simple view click Simple button at the left side of OK button 8 7 Insert Comment Like footprint and calibration records users can also put comments on a mole composition record i Lr ya Fe rai Tiar ls ac ae E4 Load latest record
424. ve ISO 10723 feature in your licence this check box also reveals the unnormalised MLC composition as well Nonetheless the pie chart always displays normalised composition Show difference check box is available for customers having SO 10723 feature in their licences This check box reveals an additional column in grid view called the delta It contains the difference between normalised single point composition and normalised MLC composition Delta is computed as single point minus MLC 8 2 View Previous Records To load previous mole composition data click bie Change record button at the top region of the form Select a different record then click OK or double click the list item Select a Record Date Time 28 March 2014 15 58 00 28 March 2014 15 57 45 28 March 2014 15 57 45 28 March 2014 15 57 40 28 March 2014 15415 28 March 2014 15 57 00 28 March 2014 15 5645 Se m a SS Filter List all analysis data Entries per page 30 List analysis data between T 16 Mar 2014 00 00 Sort Newest to oldest 16 Apr 2014 16 23 _ Oldest to newest Stream All streams Show Any status Cancel Select Record dialogue Timestamps on this screenshot are fictional actual records are usually 4 7 minutes apart You can always load the latest mole composition data through E gt Load latest record button 8 3 Import New Composition Data Unlike footprint or calibration data import which allows text files CSV files
425. ved for future updates Updated chapter 19 ISO 6976 calculator Chapter 20 ISO 6976 trend and 21 ISO 6976 trend comparison are reserved for future updates Inserted chapter 22 ISO 10723 Updated chapter 23 Lag time Chapter 26 Report is reserved for future updates Removed chapter 30 2 Bug report wizard Page 14 of 388 GCAS Desktop Manual Guide rev 14 Revision 11 Finalisedon 22 December 2014 Based on GCAS Desktop version 1 4 5 0 Updated screenshots Inserted chapter 13 Uncertainty trend Complete rewrite on chapter 16 Mole composition comparison Updated chapter 11 Uncertainty calculation Updated chapter 27 GCAS startup parameters Minor update on chapter 1 4 Revision 10 Finalised on 5 November 2014 Based on GCAS Desktop version 1 3 4 0 Updated screenshots Updated chapter 12 Uncertainty coefficients Updated chapter 23 Export data Updated chapter 24 Work offline minor changes Revision ae Finalised on 30 October 2014 Based on GCAS Desktop version 1 3 3 0 Inserted subchapter 8 8 Inserted subchapter 9 7 Updated chapter 14 Dashboard Updated chapter 17 ISO 6976 calculator Minor updates on chapter 1 4 Revision 8 Finalised on 13 October 2014 Based on GCAS Desktop version 1 3 1 0 Updated chapter 11 Uncertainty calculation Updated screenshots Page 15 of 388 GCAS Desktop Manual Guide rev 14 Revision gt 7 F
426. view Print IS0 10723 Data source file fo Browse Select importer Maea module import Likewise if you do not see this menu your user account may not have the action permission for it or the CSV Import feature was not included in your GCAS licence Contact your GCAS administrator Page 70 of 388 Lost your template GCAS Desktop Manual Guide rev 14 GCAS Desktop has two CSV templates one is for footprint and calibration data import while the other is for mole composition import For footprint calibration data import the column assignments are Column 20 21 22 23 24 25 26 2 28 29 30 31 32 33 34 Excel name A a AAO uuU OZ is Gs nl em a g a E 8 eS gt gt gt gt Description Device tag name Yes you can import data for multiple devices in one go Record flag Fill 1 for footprint or 2 for calibration data Record timestamp in the format of dd mm yyyy hh mm 24 hour clock Methane response factor Nitrogen RF Carbon dioxide RF Ethane RF Propane RF i Butane RF n Butane RF Neopentane RF If your device doesn t read neopentane fill in O zero i Pentane RF n Pentane RF Hexane RF Heptane RF If your device doesn t read heptane fill in O zero Octane RF If your device doesn t read octane fill in O zero Nonane RF If your device doesn t read nonane fill in O zero Decane RF If your device doesn t read decane fill in O zero Is it mul
427. xis scale adjusts itself accordingly so the variations of the uncertainty values become more clear To show or hide the threshold line click Show threshold line or right click the chart and select Show Threshold Line Uncertainty Trend DEMO1 Show uev O uimMw O Udw O ues O Ulp U CV Trend DEMO1 0 103900 0 103890 0 103870 16 00 16 30 17 00 Back to parameters View comments gt To go back to the parameter page click Back to parameters at the bottom of the form To read or write comments instead click View comments Note If you went back to the parameter page but didn t change anything then clicked Start graphing the form quickly returns to the chart view However if you changed one thing on the parameters Start graphing button will clear the chart and initiate a recalculation 13 3 1 Comparing Previous Chart Uncertainty Trend form remembers one last set of charts everytime it performs a complete calculation Once the calculation completes you can compare the current chart to the previous chart A typical scenario is first you graph a chart go back to the parameters page change one or two things and finally graph a new chart 2 Show previous chart button displays current chart of current parameters on top of previous chart of previous parameters Previous charts have the same colour only lighter All five line charts have their previous line charts Page 178 of 388 GCAS Desktop
428. xt next to the blue icon badge Finally click Cancel yes Cancel button to dismiss the dialogue Clicking OK instead of Cancel button will show another Apply Constraints dialogue which you don t want anymore 22 6 Offline Converter Tools Offline converters are intended for one time conversion of bulk records such as those in CSV files The term offline means it is not associated to any GC devices in GCAS database which implies you can test any arbitrary MLC coefficents calibration certificates RF values and custom constraints as conversion prerequisites without affecting any records in GCAS database Page 274 of 388 GCAS Desktop Manual Guide rev 14 GCAS Desktop ships two converter tools They can be found inside the Tools menu Select MLC e Single Point RF Offline Converter to convert response factor values of footprint calibration data or MLC Single Point MC Offline Converter to convert mole composition values Tools Administrator Window Help Correlation Calculator ISO 6976 Calculator Lag Time Calculator Mole Composition Comparison Ctrl M IS0 6976 Trend Comparison MLC Single Point RF Offline Converter MLC Single Point MC Offline Converter RI Converter tools have a wizard like appearance To get help about specific converter tool read the following two chapters 22 6 1 MLC Single Point RF Offline Converter This is an ISO 10723 converter tool for response factors First select a conversi
429. yCoefficients table because UncertaintyCoefficients_Details is already linked to this table Rep stands for repeatability coefficient while Rec means response concentration coefficient Similarly you need to open MultilevelCoefficients not the _Details one COEFF_ID DeviceTag DateOfTest v Status Description v Click to Add 1 ies F 27 08 2014 Active Data active from 27 8 2014 GasName Rep A v v v Rcc A Rec B ma Rcc D ClicktoAdd q Methane 621180 67861000 9777000 0 2 Nitrogen 33237 207910 13068000 41238 3 Carbon dioxide 277 06 8925 4 15725000 0 4 Ethane 18153 1750 4 17794000 34203 5 Propane 4547 4 105690 22305000 122260 6 i Butane 3599 7 31355 26333000 271010 7 n Butane 5931 2 64700 27800000 449000 8 Neopentane 7617 9 17200 29200000 9 i Pentane 5146 5 4400 30000000 10 n Pentane 6434 8 16400 31100000 11 Hexane 1272 7 52500 33900000 12 Heptane 0 0 0 13 Octane 14 Nonane 15 Decane New eo e196 e196 1c 010 010 010 O S So o c Glo ec G o 10o 98 19 I E 8 6 8c S 0 0 0 0 0 0 0 0 0 0 0 0 28 4 Export to Microsoft SQL Server Compact Database This exporter module exports GCAS data to Microsoft SQL Server Compact Edition database file sdf The export result is a complete GCAS database thus you can use it as a local offline database Note You need the GCAS feature Export to Microsoft SQL Server Compact Edition to be included in your GCAS licence in order to use this feature Addi
430. ype i a Display mean and 2 std deviations Records to pl Between 25 September 2014 16 27 and 7 November 2014 12 14 RF O MC RF trend pe ae a ae Mean and standard deviation is calculated from the first 1 records a X n oe Mean 6 920 372 RT OR Q RF deviation trend gt 25 2 records on each footprint onwards Standard deviation 71 214 47 H j Mean 2 std dev 7 062 801 Select component All records on each footprint onwards Mean 2 std dev 6 777 943 s i What being displayed Maximum and minimum are not limited to the first 1 records lv Methane WS IEY Maximum 7 029 540 C Nitrogen View summary Minimum 6 820 180 C Carbon dioxide Drag arectangleto Zoom Select _ Ethane v i ae A 5134 Between 7 November 2014 12 14 and 8 November 2014 09 10 Select all Change footprint i ix ew Mean and standard deviation is calculated from the first 11 records Mean 6 718 784 Standard deviation 179 360 Chat Comments Mean 2 std dev 7 077 504 Mean 2 std dev 6 360 064 Methane RF Trend Maximum and minimum are not limited to the first 11 records Maximum 6 897 093 7 200 000 a Minimum 6 348 420 n 2 std dev 2 std dev 6 360 000 e Methane RF Between 8 November 2014 09 10 and 8 November 2014 13 12 Mean and standard deviation is calculated from the first 4 records 6 720 000 Mean 6 804 535 Standard deviation 68 479 89 6
431. ys follows last uncertainty calculation configuration If last configuration is not available GCAS Desktop tries to find the latest coefficient set If no coefficient sets are available Urepeatability Is not included in the uncertainty calculation e Mole percentage range This always follows last uncertainty calculation configuration If last configuration is not available GCAS Desktop assumes a range of 20 universal e Footprint Configurable through uncertainty calculation settings tab with fallback default to use latest footprint If a device doesn t have any footprints Ureproducibility Is not included in the uncertainty calculation e Calibration data Configurable through uncertainty calculation settings tab with fallback default to all calibration records from the footprint to today e ISO 6976 calculation This always follows last uncertainty calculation configuration If last configuration is not available GCAS Desktop assumes base pressure of 1 atmosphere 101 325 Pa combustion temperature 0 C and metering temperature 0 C Last uncertainty calculation configuration is the configuration on the input pages the last time you opened Uncertainty Calculator form Each device has its own last uncertainty configuration Page 193 of 388 GCAS Desktop Manual Guide rev 14 Complete uncertainty calculation all three Ucal gas Urepeatability ANG Ureproducibility are Present is indicated by no asterisk symbol on dashboard tile Incom

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GCAS® Desktop Manual Guide revision 14 - i