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1. Log ppm Log output mode log O 9 4 3 2 1 0 1 2 10 20 8 75 18 5 75 Te 8 6 25 H 14 2 2 5 12 E 2 375 10 2 5 8 a 1 25 6 0 4 0 0001 0 001 0 01 0 1 1 10 100 Oz Figure 5 Graph Showing Logarithmic Output Mode The following general formulae can be used to calculate the oxygen from the voltage or current outputs when set to the log output mode Formula for calculating log10 O from Eed analog output signal i log10 0 Vout 10 log10 O H O L log10 O L log10 0 mAout 4 16 log10 0 H O L dee Ma Where O L user setting of oxygen for 0 V or 4 mA output O H user setting of oxygen for 10 V or 20 mA output Vout the measured voltage output in volts mAout the measured current output in mA O O L and OH must all be in the same units NOTE O 10 log O 10 97487 Issue 1 April 2015 XGA301 User s Manual OPERATI ON 3 Zirconia sensor only RAW mV This setting is for customers who like to monitor the raw sensor EMF signal The signal from a sensor goes from approximately 50 mV at 100 O through zero at approx 5 O and to 1000 mV at extremely low O levels So for example if the scale is set to 0 V output 50 mV sensor voltage at approximately 100 O and 10 V output 250 mV sensor voltage at approximately 1 ppm O then 5 V would indicat
2. 1 During the warm up period it is common for the baseline oxygen to drift by a small amount which may be corrected by re calibrating see Section 3 1 Display Possibilities Sensor Reading Display Possibilities O reading gt 9999 9 Display shows O Range Display shows the normal oxygen reading in or ppm Display flashes to warn the measurement limit is approaching O reading lt 0 5 ppm Display shows U Range Indicates that the pressure sensor is out of O reading is flashing range and automatic pressure correction is on Display shows Possible sensor Fault because the sensor heater is failing O reading gt 1 0 ppm and lt 9999 9 O reading gt 0 5 ppm and lt 1 0 ppm O sensor takes gt 10 minutes to warm up O sensor has failed completely or become disconnected O sensor is ok but the pressure sensor is faulty and the auto pressure correction Display shows Fault flashing mode is selected Display shows No sensor or sensor Fault Pressure Sensor Display Possibilities Pressure reading is 1000 mbar Display shows O Range Press Pressure reading is gt 1000 mbar and Display shows the normal pressure reading 1000 mbar in mbar bar kPa torr or psi Pressure reading is 1000 mbar Display shows U Range Press Pressure sensor has failed completely or Display shows Fault Press with the word become disconnected Fault flashing Table 3 Sensor Reading Display Possibilities The unit is not suitable
3. Sensor under range Sensor over range 2 mA 1 25 V 2 5 mA 1 5625 V 3 mA 1 875 V Sensor operating out of specification 3 5 mA 2 1875 V Normal operating output 4to20 mA Oto 10V Pressure Analog Outputs Current Voltage 4 20 mA 0 10 V 1 mA 0 625 V Description Normal operating output 4to20 mA Oto10V 1 25 V Start up Sensor under 2 5 mA 1 5625 V range Sensor over aiibi range OPERATI ON There is a sensor fault on the oxygen sensor and or the temperature sensor has a fault condition and or the pressure mode is set to De activated automatic pressure compensation active and the pressure sensor has a fault condition The analyzer is still initializing De activated The sensor reading is under range The sensor reading is over range The sensor reading is in range but the temperature sensor reading is out of range and or the pressure mode is set to automatic pressure compensation active and the pressure sensor is out of range The O sensor and associated 1 sensor s are operating normally and readings are in range Explanation De activated De activated The pressure sensor has a fault The analyzer is still initializing The pressure sensor reading is under range The pressure sensor reading is over range The pressure sensor is operating normally and readings are in range Table 1 Analog Output Settings and Alarm Status for Certain C
4. e E mail the file to info michell com so we can help diagnose the problem Michell Instruments 47 APPENDI X E XGA301 User s Manual Appendix E Troubleshooting 48 97487 Issue 1 April 2015 XGA301 User s Manual APPENDI X E Appendix E Troubleshooting Q A The XGA301 says sensor heating but won t begin measuring What kind of gas are you running over the sensor Does it contain hydrogen or helium If so then the heater may be struggling to heat the sensor with such cooling gas present Does the problem go away if room air is allowed into the analyzer Contact Michell Instruments for advice If the message continues for around eight minutes then the analyzer will give up and indicate that the internal heater has failed and the sensor needs replacing The XGA301 will not power up at all There are fuses located on the power socket on both live and neutral lines These are standard 20mm 2A SLOW BLOW fuses available from a supplier such as RS Components The XGA301 gives strange readings that are way off the expected values Check to make sure which calibration gases are selected Are they the same as the actual gases you used to perform the calibration If not you must recalibrate the analyzer or re load the factory defaults to get you going again The sensor does not read 20 9 21 0 in air actual value is 20 95 If the room air is very humid it will slightly affect the observed measurement or the sensor may
5. ALARM PR H Read every UNE Seconds zl m Run for y E Time left 00 52 37 n Started at 20 08 2008 19 21 22 Show Plot IV Stops at 20 08 2008 20 21 22 Data Count 385 Status Data acquisition paused by user Figure 18 Data Logging Page During logging data from the analyzer is shown in the central area of this page The data is displayed in the following columns time in seconds the raw signal from the sensor in mV the oxygen value in ppm scientific notation pressure in the units of choice the time in regional format the date in regional format and alarm status displays either ALM1 ALM2 or ALM1 amp 2 if activated To start data logging select the frequency of measurement by entering a time and selecting a unit from the drop down list For example if you wish to log data once every minute type 1 in the box and select Mins from the drop down menu The NOTES window can be opened at any time by selecting NOTES from the Data Logger drop down menu A small text box appears in which you can type a text message This note is then saved as a header in the data file set and can be viewed along with the data Choose to have data logged continuously until Stop is selected from the Data Logger menu or choose to set a time limit for data logging by checking the box labelled Time Limit setting the duration in the Run For box and selecting units with the drop down list For example if you wish to log dat
6. Confirmation Screen If the current stored value is correct and matches your cal gas value then simply click Yes to proceed If you are using a different value to the one you see on the screen then click No to change it as shown below Concentration of High 02 Calibration Gas as ik Figure 15 Calibration Gas Update Screen Enter your new value in the units as instructed and click OK to proceed This value will then be stored until you want to change it again You will now see the following screen About to recalibrate High O2 with 20 95 Are you sure 3 xw Figure 16 Calibration Confirmation Screen This is your final chance to change your mind before committing to a calibration Check carefully that the gas value on the screen actually matches the value of your calibration gas before clicking on Yes to complete the calibration At this point you should observe that the LCD display will reset itself to the correct calibration You can now proceed with the rest of the calibration process by selecting the Middle and Low gases in the same manner 36 97487 Issue 1 April 2015 XGA301 User s Manual APPENDI X C C 9 Calibration Error Messages During the calibration process described in Section 3 it is possible to receive screen error messages as described here 1 Bad Sensor Reading The XGA301 software makes a prediction of the expected sensor mV for each calibration gas value en
7. again in the future Michell Instruments 11 OPERATI ON XGA301 User s Manual 2 10 Pressure Outputs To select and modify the pressure outputs scroll down to menu option 4 Set Outputs and press the ENT key four times Change the low and high range using the same procedure described above The permissible range is 1000 mbar to 2000 mbar NOTE The voltage 0 to 10 V and current 4 to 20 mA outputs are locked together so that these outputs cannot be set independently of each other In normal operation therefore 0 V output always corresponds to 4 mA and 10 V always corresponds to 20 mA output During initial warm up the XGA301 will display the serial number and the output sent to the rear terminal for oxygen will stay at 2 mA 1 25 V which is the standby signal If at any stage a sensor becomes disconnected internally or the signal exceeds the measurable range for that sensor then the display will indicate there is a fault and the outputs will change to 1 mA 0 625 V which is the sensor fault signal This will recover as soon as the sensor is reconnected and the fault cleared Additional current and voltage signals are provided by the analyzer to give an indication of various conditions and these are described in the table below together with the status of the alarms during the condition 12 97487 Issue 1 April 2015 XGA301 User s Manual O Analog Outputs Current Voltage 2 4 20 mA 0 10 V u Start up
8. as shown below Check For Updates Show LCD Hide LCD Image Grab Calibrate constant B Figure 17 Software Utilities Menu Screen Setting Analyzer Date and Time The current date and time of your PC are displayed on the configuration screen and can be loaded into the XGA301 by selecting the Utilities menu and clicking the Set date and time option This information is used in the RS232 data string for data logging purposes Make sure that your PC clock is set correctly before using this function as you cannot edit the date and time shown by the XGA301 software The date and time formats displayed are those set in the PC s Regional Settings Check for Updates This function will check online and advise you if any software updates are available for your machine This function is not automatic To update the software you need to visit www michell com and select the support page where a list of downloads are provided I mage Grabber This is a simple function to allow the user to copy the software screens into the Windows clipboard This is useful for diagnosing problems allowing a quick and simple way of sending the Michell Instruments technicians actual screen shots of the software To recover the images simply press CTL V to paste 38 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX D Appendix D Data Logging Software Michell Instruments 39 APPENDIX D XGA301 User s Manual Appendix D Data Loggi
9. can access the on screen help facility at any time by clicking on the help menu on the menu bar and select the Help option or press F1 CA Configuration Page The configuration page is split into three and you can switch between them by clicking on the tabs labelled Config 1 Config 2 or Alarm Config Each page allows the user to reprogram an array of variables used by the XGA301 Once written to the XGA301 the new variables remain permanent until overwritten To read the current configuration stored in your XGA301 select Read Analyzer Configuration from the File menu or click the Read button on any of the Config pages Note that the entries in the boxes on the RHS under the Write button will turn red if the value is different to that just read and a red asterisk will appear next to the Write button to warn you that a change has been made The left hand set of grey text fields read fields will be updated with the current configuration data To save this information e g if several people share the same instrument click the long copy gt gt button between the Read and Write columns on any of the Config pages in order to transfer the data into the edit boxes select Save Configuration as from the File menu and choose a filename This data set can be subsequently reloaded at any time by selecting Load Configuration File from the File menu and then selecting the folder where th
10. date stamped feature the temporary data file is wiped clean as soon as the previous data set has been saved successfully In the case of a crash the temporary data file should be used to recover the last day s worth of data that was not saved to the hard disc Diagnostics The XGA301 software includes a diagnostics page that is accessed from the tab labelled Diagnostics This screen will display various values and settings that are operating inside your machine There is no editing possible on this page it is purely for information and to enable technical support help you should you experience difficulties with your machine You may be asked to record values from this page if troubleshooting is required File Comms Units Utilities DataLogger Help Config 1 Config 2 Alarm Config Data Acquisition Diagnostics FAW 01 01 03 13 19 07 2011 14 10 41 Analogue ensor State Digital Data 0 b Data Data 1 E Auxl Sensor ox Data 2 Aux2 Sensor OK Data 3 Temp Sensor OK Data 4 J E Data 5 Data 6 Data 7 Keypad Temperature Sensor Data 8 Data 3 Data 10 Data 11 Log Diagnostic Data quisition data 2 884E 05 1 364E 01 1 861E 00 00 49 12 01 01 00 0 Status Figure 21 Diagnostics Screen 1 Analog The live analog values displayed in this pane are voltage measurements coming directly from the computer chip inside the analyzer They are for informat
11. equipment for any other purpose than that stated Do not apply values greater than the maximum value stated This manual contains operating and safety instructions which must be followed to ensure the safe operation and to maintain the equipment in a safe condition The safety instructions are either warnings or cautions issued to protect the user and the equipment from injury or damage Use qualified personnel and good engineering practice for all procedures in this manual Electrical Safety The instrument is designed to be completely safe when used with options and accessories supplied by the manufacturer for use with the instrument The input power supply voltage limits are 90 to 260 V AC 50 60Hz Pressure Safety DO NOT permit pressures greater than the safe working pressure to be applied to the instrument The specified safe working pressure is 25 to 25 mbar Toxic Materials The use of hazardous materials in the construction of this instrument has been minimized During normal operation it is not possible for the user to come into contact with any hazardous substance which might be employed in the construction of the instrument Care should however be exercised during maintenance and the disposal of certain parts Repair and Maintenance The instrument must be maintained either by the manufacturer or an accredited service agent Refer to www michell com for details of Michell Instruments worldwide offices contact information C
12. has only 2 off mA outputs that are freely assignable to any of the sensors fitted If all three sensors require logging at the same time this can be achieved via the RS232 26 97487 Issue 1 April 2015 XGA301 User s Manual APPENDI X B Appendix B EU Declaration of Conformity Michell Instruments 27 APPENDIX B XGA301 User s Manual Appendix B EU Declaration of Conformity MICHELL Instruments Manufacturer Michell Instruments Limited 48 Lancaster Way Business Park Ely Cambridgeshire CB6 3NW UK EU Declaration of Conformity m We declare under our sole responsibility that the product XGA301 Industrial Gas Analyser complies with all the essential requirements of the EU directives listed below 2014 30 EU EMC Directive 2014 35 EU Low Voltage Directive LVD 2011 65 EU Restriction of Hazardous Substances Directive RoHS2 and has been designed to be in conformance with the relevant sections of the following standards or other normative documents EN61326 Electrical equipment for measurement control and laboratory A1 A2 1997 use EMC requirements Class B emissions and General Locations immunity EN61010 1 2010 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements Andrew M V Stokes Technical Director Date of Issue January 2015 EUD XGA301 Issue 01 28 97487 Issue 1 April 2015 XGA301 User s Manual APPENDI X C A
13. no need to repeat the action when you toggle to the other page Alternatively you can load saved configuration data by selecting Load Configuration from the File menu and selecting the required file In order to programme the analyzer select Write configuration to the analyzer from the File menu or click the Write button on any Config page Michell Instruments 31 APPENDIX C C 5 Reconfiguring the Analyzer The on screen edit boxes contain variables that can be reprogrammed into the XGA301 in exactly the same manner as using the front panel keypad For a full description please refer to the relevant section in this manual The user can choose whether to use ppm or percent notation to edit the text boxes where appropriate by selecting the UNITS menu and clicking on Percent or ppm To access a field either click inside it or use the TAB key to scroll through them The field parameters are as follows C 6 Configuration 1 Screen 1 2 10 11 12 97487 Issue 1 April 2015 32 Oxygen Range Not available for the XGA301 Oxygen Units amp Format See Section 2 12 for a full description Use the drop down box to select PPM EXPONENTIAL PPM MIXED AUTO PPM PRESSURE or N2 BALANCE The default setting is AUTO PPM Oxygen Analog Output Mode See Section 2 11 for a full description Use the drop down menu to select RAW LIN ppm or LOG ppm as the mode of output f
14. program these options scroll down to menu option 5 Set Units and press the ENT key Use the ENT key to progress through the list and the the UP amp DOWN arrows to select the required units Once selected press the ENT key to store and return to run mode Setting the Display Options The user can select the LCD refresh rate and the format of the Line 2 display using the keypad or the software provided Scroll down to menu option 6 Display Setup and press the ENT key Use the UP amp DOWN arrows to select either the LCD refresh rate or Line 2 options 1 LCD Refresh Interval The frequency of the display update can be selected from 0 1 to 1 5 seconds The current setting can be edited using the same method as described previously Once edited press the ENT key to store and return to the main menu The default setting is 0 3 seconds 2 Line 2 Options The information displayed on Line 2 of the LCD can be chosen by the user The options are None or Pressure displayed in mbar bar psi torr or KPa Use the UP amp DOWN arrows to select the required option and press the ENT key to store and return to the main menu 14 97487 Issue 1 April 2015 XGA301 User s Manual OPERATI ON 2 13 2 14 2 15 Pressure Mode The user has the option of using the reading from the internal pressure sensor where fitted to automatically correct for changes in gas pressure and hence oxygen pressure A manual pressure correction value for ambie
15. prompt to press and hold the ENT key for 2 seconds to confirm To complete this press the ENT key until the bar graph has completed and the screen says Defaults Loaded This will give all the basic settings that are factory set Re calibrate the sensor and check all the settings are suitable 50 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX E Appendix F Quality Recycling amp Warranty Information Michell Instruments 5I APPENDIX F XGA301 User s Manual Appendix F Quality Recycling amp Warranty I nformation F 1 Pressure Equipment Directive PED 97 23 EC The above Directive has been implemented in United Kingdom Law by the Pressure Equipment Regulations 1999 The Regulations require that all pressure equipment and assemblies within the scope of the Pressure Equipment Directive must be safe when placed on the market or put into service Michell Instruments products have been assessed and as referenced against the Classification Charts detailed in Annex II of the Directive do not fall into the requirements for CE marking compliance with the Pressure Equipment Directive Article 3 paragraph 3 states that any product containing a pressurized fluid that does not qualify for compliance should nevertheless be constructed with Sound Engineering Practice SEP Michell Instruments attests here that its products have been designed manufactured amp tested to assure safe operation and in accordance with Sou
16. simple procedure requiring only two or three gases one of which is normally air 20 9596 The two gas values are user selectable and can be changed by using the front keypad Figure 1 5 or the Communications Software as described in Appendix C The calibration values can be stored on file for later use Care must be taken to calibrate the analyzer so that whenever possible the range of measurement lies between the two calibration point extremes For example if you are working at 10 ppm but have calibrated the analyzer between 21 and 100 then the analyzer will be inaccurate It should be calibrated at about 4 ppm and 21 to be sure of good accuracy The procedure is as follows 1 Bearing in mind the points made above decide which two or three gases are going to be used for calibration If you are constantly working at a particular range of compositions then it would be wise to obtain small cylinders of calibration gas with analysis certificates Michell Instruments can supply these Press the ENT key on the front panel keypad Figure 1 5 to access the menu system The calibration function is on the menu list which can be scrolled using the UP amp DOWN arrows Press the ENT key again to enter the calibration menu Use the UP amp DOWN arrows to select O2 HIGH O2 MIDDLE or O2 LOW and press the ENT key to proceed The top line of the display shows the current calibration gas stored and the bottom line of the display shows the promp
17. the instrument should be returned to Michell Instruments carriage prepaid preferably in the original packaging with a full description of the fault and the customer contact information 3 Upon receipt Michell Instruments will evaluate the product to determine the cause of the malfunction Then one of the following courses of action will be taken H If the fault is covered under the terms of the warranty the instrument will be repaired at no cost to the owner and returned e If Michell Instruments determines that the fault is not covered under the terms of the warranty or if the warranty has expired an estimate for the cost of the repairs at standard rates will be provided Upon receipt of the owner s approval to proceed the product will be repaired and returned F 9 Manufacturing Quality Michell Instruments is registered with the British Standards Institute for Quality Assurance to BS EN ISO 9001 2008 Rigorous procedures are performed at every stage of production to ensure that the materials of construction manufacturing calibration and final test procedures meet the requirements laid down by our BSI approved Quality System Please contact Michell Instruments www michell com if the product does not arrive in perfect working order Michell Instruments 55 APPENDI X G XGA301 User s Manual Appendix G Return Document amp Decontamination Declaration 56 97487 Issue 1 April 2015 XGA301 User s Manual APPENDI
18. this data is empty so the response would look like d2 959E 05 1 426E 01 2 000E 00 23 19 40 14 01 00 O CR LF These are binary codes so fault combinations produce other numbers D command was not recognized Try to send it again Michell Instruments 17 OPERATI ON XGA301 User s Manual 2 16 Printing If you have purchased the printer option then you have the option to print out various data from the analyzer straight on to thermal paper Simply connect the printer to the unit using the serial socket on the rear of the machine and make sure the printer is switched on battery and mains versions are available To print the live values on the LCD at any time simply press the RIGHT arrow on the front panel Each push of the button will print out the serial number followed by the data in a tabbed format followed by a blank line If the button is held down the printer will keep printing data but not the serial number When the printer is first connected or turned on a start up message like the one displayed on the LCD when the XGA301 is switched on will be printed and will look like this Michell Instruments XGA301 Oxygen Analyzer S N 146877 FW v 01 01 12 21 18 97487 Issue 1 April 2015 XGA301 User s Manual CALI BRATI ON 3 3 1 CALI BRATI ON The XGA301 analyzer can be supplied with one two or three sensors from different technologies Calibration Zirconia Sensor Full calibration is a
19. will be asked to enter a value for the current ambient pressure to slightly improve the accuracy of the correction The factory default is 1013 mbar which is the average ambient pressure for the UK The ambient pressure at the location will depend on altitude and prevailing weather conditions Setting the Baud Rate If you are using the software for data logging you can chose the communications speed Baud Rate by scrolling down to menu option 8 Set Baud Rate and using the UP amp DOWN arrows to select either 9600 or 57 600 Press the ENT key again to store and return to normal operation The default factory setting is 57 600 However if an older PC is being used decrease this to 9600 to improve the reliability of the software and data communications RS232 Port It is possible to factory set the data communications port to RS232 Once configured at the factory it is not possible to change unless the unit is returned to Michell Instruments Data from the XGA301 is sent on demand to the 9 way D type socket Figure 2 10 on the rear panel and can be read using a simple terminal programme such as HyperTerminal in Windows or with the user s own custom software Alternatively a simple and convenient data logger programme is included with the supplied software and is described in Appendix D Michell Instruments 15 OPERATI ON XGA301 User s Manual 2 15 1 RS232 Protocol Oxygen data can be read from the RS232 port at the back of t
20. 1 MICHELL Instruments XGA301 Industrial Gas Analyzer User s Manual 97487 Issue 1 April 2015 Please fill out the form s below for each instrument that has been purchased Use this information when contacting Michell Instruments for service purposes 1 MICHELL Instruments This issue of the manual covers the A1 and A2 chassis with zirconium oxide and or dew point sensors only XGA301A1 XGA301A2 For Michell Instruments contact information please go to www michell com 2015 Michell Instruments This document is the property of Michell Instruments Ltd and may not be copied or otherwise reproduced communicated in any way to third parties nor stored in any Data Processing System without the express written authorization of Michell Instruments Ltd XGA301 User s Manual Contents SO aia rd ii adi vii Electrical Safety A P ah vii EE M A vii TOXIC Matena t T vii Ree SET vii LANDET ON M H vii Safety CONTO sist iaa vii A E viii WENIGE T M viii MEN I er MEIS M e mE 1 A TEENE n 1 X JOPERATION Mete E DR P es ee 2 MEE Loud o Men ara aia 3 PED arcu Tm 3 KB ET m 3 2 3 1 MUI Es en bt M 4 24 BE e sa AAA AAA A AAA AAA 6 2
21. 2 Alarm Config Data Acquisition Diagnostics FAw01 01 0802 18 08 2000 10 32 01 Read Write 02 Calibration gas 1 02 Calibration gas 2 02 Calibration gas 3 Calibration constant A Calibration constant B Calibration constant C 02 Analogue out high 54 20m ppm 250000 25000 02 Analogue out low fv 4mA ppm 10 10 Aux Analogue out high 5V 20m C fi 000000 1000000 Aux Analogue out low OV 4m C o lo Absolute ambient pressure mbar 1013 por Figure 10 Configuration 2 Screen NOTE The actual values used may differ from those shown above l Calibration Gas 1 2 amp 3 These boxes are greyed out in this version and the data is for information purposes only If you want to change the current calibration gas then follow the procedure given in Section 3 2 Calibration Constant A B amp C These boxes contain the calibration constants that the XGA301 calculates automatically when you perform a calibration You will see that they change each time you perform a new calibration Generally the air value should be approximately 10 mV and a low ppm value e g 10 ppm would be approximately 180 mV 3 O Analog Output 0 V 4 mA 10 V 20 mA Use these two boxes to set the High and Low oxygen values for the analog outputs 6 on the rear panel For example if you want 4 mA to represent 1 and 20 mA to represent 21 then enter these two values into the app
22. 5 LOD Display tia 6 26 PUN CORIO Or mtl asian 6 2 7 Menu Access PASSWOrUS occcoconocccaccononancnanonanonanonronoronanonanonconanonanonronoronarenarenaanss 7 208 E 7 2 9 Analog OUTPUTS erm 9 2 10 Pressure e ee noia AA AAA AR 12 2 11 Seng the Display EE 14 2 12 Setting the Display e CEET HE MEVS dS daa Ke RM Us RA 14 2 13 Pressure Eet 15 2 14 Setting the Bald Ba ne aE 15 ZI ME eeben 15 2151 nie E 16 IMEIDd ee S 18 3 GALIBRATION mer ee 19 Sl e EWERT 19 S ZIRCONIA SENSOR td 21 dl SEU E 21 43 2 Display POSI ee 21 4 3 CHANING the Zirconia SENSO an 22 A e een EEE err carretera er orr ee 22 b DEWPOINT SENSOR stops 23 5 1 Load Defaults Zirconia Sensor One 50 iv 97487 Issue 1 April 2015 XGA301 User s Manual Figures Figure 1 AC SOT eet E 3 Figure 2 en Pc llo P 3 Figure 3 MERU EE ja AA AAA 5 Figure 4 Graph Showing Linear Output Mode Option For Oxygen eere 9 Figure 5 Graph Showing Logarithmic Output MOTE soii 10 Figure 6 Graph Showing Raw Sensor mV Output Mode Option For Oxygen 21 Figure 7 XGA301 Default COM Properties BOR ui een 16 Figure 8 XGA301 RS232 Pin CORRA A 16 Figure 9 CORTAR E 30 Figure 10 Conng raton 2 Sree 33 Figure 11 Alarm COTO SCHEN RR 34 Figure 12 On Screen E AA EEN 35 Figure 13 Remote Calibration and Clean FUDCIQOEDs eame rata ii 35 Fig
23. A rising alarm means that the alarm will be silent at values below the set point but as soon as the value rises above the set point the alarm will be triggered 5 SETPOINT The current alarm set point is displayed in scientific notation with a flashing cursor under the first digit Use the UP amp DOWN arrows to change the digit and the RIGHT arrow to progress until the correct value is displayed Press the ENT key to proceed to the next setting 6 CONTACTS The relay outputs can be set to either normally open N O or normally closed N C The factory default is N O meaning the contacts will close when an alarm condition occurs Press the ENT key to save all the above settings for the selected alarm Alarm 2 can be set in exactly the same way as described above and both alarm circuits are completely independent of each other NOTE All the parameters must be programmed for each alarm in order for the settings to be saved The bottom line of the LCD will display Alarm x set where x is the selected alarm channel to confirm that the settings have been saved The alarm circuit relays are accessed via the terminal block on the rear panel and are clearly labelled Alarm 1 is assigned to the terminals labelled Alarm High and Alarm 2 is assigned to the terminals labelled Alarm Low The relay circuit is rated at 24 V 0 5 amps maximum Under certain conditions e g the sensor becomes disconnected the XGA301 will set the alarm channel to OFF to p
24. CH amp CO amongst others The analyzer can be specified with one two or three sensors chosen from four measurement technologies With its lightweight carry handle and retractable feet it is easy to move from bench to bench or simply to a storage shelf in between usage There are three chassis available e XGA301A1 can be fitted with a single sensor only with gas ports on the front or rear panel H XGA301A2 has a larger case and can be supplied with either one or two sensors The analyzer has a flow meter with needle valve as standard e XGA301A3 has the same chassis as the XGA301A2 but has a 4 line display and is supplied with three sensors 1 1 Features e Single dual or triple measurement options available e Zirconium oxide electrochemical infra red and ceramic impedance technologies available e Easy calibration procedure through HMI H Powerful variable speed diaphragm pump fitted for sampling the gas e Large back lit LCD display 16 x 2 characters e RS232 0 to 10 V and 4 20 mA current loop outputs both fully programmable e Fully programmable alarm circuits e Full data logging software accessed via RS232 connection to a PC e PIN code protection available e Optional printer attachment Michell Instruments 1 OPERATI ON XGA301 User s Manual 2 OPERATI ON PRECAUTI ONS The unit should not be exposed to extreme temperatures lt 5 C or gt 50 C lt 23 F or gt 122 F Normal operati
25. EOGUEF unan 40 D 3 Running the Data Logger nn 41 D 4 Auto Date Stamped PIG ege ee EEN 41 D 5 Eye Tine E smi E o S 42 D 6 Main Graph WINDOW e E 42 D 7 A 43 D 8 Graphi Titles E iron 43 D 9 Plot Coordinates cv T 43 D 10 tast RE 43 D 11 USING the CU unn ms 44 D 12 ZOOMIN AAA nn A 44 D 13 Ke EE Een UNI EE 44 D 14 Oxygen Scale T 44 p 15 SONO N AXI Sagene ee 44 D 16 Loading am Old RUM nee 44 D 17 Printing Criar AAA 45 D 18 Data Logging mn the Eeckels Seier EE 45 D 19 Pausino the Data LOGGING aso riii te a do 45 D 20 Changing the Data Logging Parameters Mid Run 45 D Z1 Working With EE 45 D 22 Disaster RECOVENY eebe 46 D 23 spi 46 Appendix E TUNES el T C 49 Appendix F Quality Recycling amp Warranty Information 52 Ei Pressure Equipment Directive PED 97 23 EC 52 F2 Recycling nre a li 52 ES WEEE Compliance E 52 EA Uu ee SE e EE 53 Ro VUE Tele EE 53 F6 REACH COMPRAMOS MEMO Sm 54 E7 Calibration E 54 F8 RETINA auem E 55 F9 M nufacturing Kiel 55 Appendix G Return Document amp Decontamination Declaration seseeesess 57 vi 97487 Issue 1 April 2015 XGA301 User s Manual Safety The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual The user must not use this
26. NOTE If the ENT key is released before two seconds have elapsed the recalibration will be aborted and when the analyzer eventually returns to run mode it will use the existing calibration 3 The analyzer should ideally be calibrated at normal ambient pressure If the pressure correction mode is set to AUTO then it is still possible to perform an accurate calibration at pressures other than ambient However above 25 mbar gauge or below 25 mbar gauge the display will flash and P will display to warn you that the pressure is either above or below the range recommended for accurate calibration 4 The analyzer predicts the correct signal from the sensor during calibration and if this is outside the range of expected values then the display will flash and display G to warn you that either the cal gas flowing over the sensor is different to the value that has been programmed OR the sensor may be old and approaching the end of its life Check before proceeding 5 To calibrate against the second or third calibration gas repeat the procedure from 2 but this time press the ENT key followed by the UP amp DOWN arrows to scroll through to the O2 MIDDLE or O2 LOW screen Flush the sensor chamber with the second calibration gas allowing several minutes for the new gas to flush through Wait for the display to become stable before pressing the ENT key for two seconds The analyzer will then recalibrate and display O2 recalibrated and then return to nor
27. X G Appendix G Return Document amp Decontamination Declaration Decontamination Certificate IMPORTANT NOTE Please complete this form prior to this instrument or any components leaving your site and being returned to us or where applicable prior to any work being carried out by a Michell engineer at your site Company Name Contact Name Address Telephone Reason for Return Description of Fault Has this equipment been exposed internally or externally to any of the following Please circle YES NO as applicable and provide details below Radioactive substances le c BEE SEE BEE SEE Please provide details of any hazardous materials used with this equipment as indicated above use continuation sheet if necessary Your method of cleaning decontamination Has the equipment been cleaned and decontaminated NOT NECESSARY Michell Instruments will not accept instruments that have been exposed to toxins radio activity or bio hazardous materials For most applications involving solvents acidic basic flammable or toxic gases a simple purge with dry gas dew point lt 30 C over 24 hours should be sufficient to decontaminate the unit prior to return Work will not be carried out on any unit that does not have a completed decontamination declaration Decontamination Declaration declare that the information above is true and complete to the best of my knowledge and it is safe for Michell personnel to service or repair th
28. a for thirty minutes type 30 in the box and select Mins from the drop down list 40 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX D D 3 Running the Data Logger If you wish to save the data into a file for later use check the Save to File box before selecting Run from the Data Logger menu You will be prompted for a file name and location before data logging commences The file and path information will appear in the box at the top of the page labelled Data File Name If you forget to select file saving before starting a run you will nevertheless be prompted at the end as to whether you wish to save the run data The blue progress bar displays the state of completion of the run and the blue box to the right of it the same information as a percentage You can stop the run at any time by selecting Stop from the Data Logger menu The yellow Status bar at the bottom of the page gives information about the data logging operation Once data logging is complete you may open the text format data file using any compatible spreadsheet programme such as MS Excel and use the data to generate plots and reports You can pause the data logger at any time by selecting data logger and pause Repeat to continue logging from where you left off noting that the clock keeps ticking during the pause period D 4 Auto Date Stamped Files If you are planning to run the data logger for extended periods of time then you sho
29. alibration The recommended calibration interval for the XGA301 depends on the sensor s fitted see individual sensor recommendations The instrument can be returned to the manufacturer Michell Instruments or one of their accredited service agents for re calibration go to www michell com for contact information Safety Conformity This product meets the essential protection requirements of the relevant EU directives Michell Instruments vii XGA301 User s Manual Abbreviations The following abbreviations may or may not be used in this manual AC SC F HMI l min kg LCD Ib mA mm N C N O PC ppm RS232 Warnings alternating current degrees Celsius degrees Fahrenheit human machine interface liters per minute kilogram s liquid crystal display pound milliampere millimeter normally closed normally open personal computer parts per million serial data transmission standard Volts Watt percentage inch ohm The following general warning is applicable to this instrument It is repeated in the text in the appropriate locations Where this hazard warning symbol appears in the following sections it is used to indicate areas where potentially hazardous operations need to be carried out viii 97487 Issue 1 April 2015 XGA301 User s Manual INTRODUCTI ON 1 INTRODUCTION The XGA301 Industrial Gas Analyzer is designed to measure oxygen dew point and a range of gases such as CO
30. bration for my instrument Select Load Configuration File from the File menu and look for the rxc file on your CD Select this file and then select Write to the Analyzer This will load the factory calibration back into the XGA301 Alternatively you can load a standard default configuration any time using the Load Default option on the File menu This configuration will not be perfect for your analyzer but will be good enough to get you started again Q The HO sensor takes a long time to respond If the analyzer and sensor has been left exposed to air which is normally quite humid then it can take a long time for the dew point tile to dry out once measurements commence Try flushing the analyzer with dry nitrogen and when the unit is switched off please remove the inlet tube This will trap the dry gas in the dew point compartment 5 1 Load Defaults Zirconia Sensor only If a mistake is made while programming the XGA301 it is possible to restore the machine back to its factory settings by loading the unique default configuration that is supplied on the software CD ROM The default set up can only be accessed using the software provided See Appendix C for further details Alternatively reset to generic factory defaults directly from the front panel keypad Press the ENT key to enter the user setup menu and select menu option 10 Load Defaults and press the ENT key to proceed The next screen will say Load Defaults with the
31. current outputs when set to the linear output mode Output type Formula for calculating oxygen from analog output signal 0 10 V O Vout 10 O H OIL O L 4 20 mA O mAout 4 16 O H O L O L Where O L user setting of oxygen for 0 V or 4 mA output OH user setting of oxygen for 10 V or 20 mA output Vout the measured voltage output in volts mAout the measured current output in mA O O L and OH must all be in the same units Michell Instruments 9 OPERATI ON XGA301 User s Manual 2 Zirconia sensor only LOG ppm This setting produces an output that is scaled logarithmically between 0 V and 10 V or 4 and 20 mA So for example if the scale is set to 0 V 0 000196 1 ppm and 10 V 100 1000000 ppm then 5 V would indicate an oxygen reading of 0 1 1000 ppm This scale is more suitable for large ranges of oxygen down to very low ppm levels Note that because the scaling is logarithmic 0 V cannot be set to 0 oxygen since log 0 is oo The lowest permitted setting is 0 V 10 20 ppm or 10 24 O The scaling of this example is shown in the blue line in following plot from which other intermediate values can also be read For comparison the red line shows the limitations of using the linear oxygen output mode over the same range This setting is more suitable for large ranges of oxygen e g 10 ppm to 21
32. e serial number of your machine Note the following e Diagnostic data is logged every 6 seconds or every second if your software has the Enable fast log check box e Logging diagnostic data is controlled entirely by the Log diagnostic data check box logging starts as soon as it is checked and stops when it s unchecked e If you switch to a different tab diagnostic data logging will be suspended so the general rule when logging diagnostic data is check the Log diagnostic data check box and then leave the software alone until you want to stop logging e There is no file name option so rename the last diagnostic data file before logging new diagnostic data Diagnostic data contains raw data from the analyzer as well as either status messages such as Sensor heating or acquisition data as you would get from the normal data acquisition file However unlike normal data acquisition it isn t suspended if the heater loses control Diagnostic data saving will only be suspended if there s a comms glitch between the PC and the XGA301 or if you try to interact with the XGA301 via software The file is created at the start of the run and as with the temporary data file each data line is appended so you can look at the file at any time You can therefore have a look at the file at any time for example by opening it in Notepad or by copying and saving it with a CSV extension for Excel and see whether there are any anomalies
33. e a sensor voltage of 100 mV The scaling of this example is shown in the following plot from which other intermediate values can also be read Raw mV Sensor mV output mode 10 a 8 75 18 2 75 16 gt 2 625 14 3 F 3 2 5 12 a 9 E gt dh 10 a 6 o 2 5 8 1 25 6 0 4 50 0 50 100 150 200 250 Raw sensor voltage mV Figure 6 Graph Showing Raw Sensor mV Output Mode Option For Oxygen The following general formulae can be used to calculate the oxygen sensor raw voltage O mV from the voltage or current outputs when set to the raw sensor voltage output mode Formula for calculating sensor mV from SE analog output signal 0 10 V Om Vout 10 O mVH O mVL O mVL 4 20 mA O mV mAout 4 16 O mVH O mVL O mVL Where O mVL user setting of oxygen mV for 0 V or 4 mA output O mVH user setting of oxygen mV for 10 V or 20 mA output Vout the measured voltage output in volts mAout the measured current output in mA The auxiliary outputs are fixed to the pressure sensor on this model To modify the oxygen analog output range scroll down the menu option 4 Set Outputs and press the ENT key Use the UP 8 DOWN arrows to select the output type either lin ppm log ppm or raw mV and press the ENT key The lower and upper values can now be edited using the the UP DOWN and RIGHT arrows Once programmed the new values remain in the memory until they are edited
34. e configuration files have been stored If at any time you wish to restore the machine to its factory default settings select Default Configuration from the File menu to load these values The software will search for a unique rxc file that is loaded onto the PC during the software installation The filename is 2100 rxc where is the last three digits of the serial number located on the rear of the machine This file is also located on the CD ROM that came with the machine Normally this file is located in My Documents directory but if the software cannot locate it then it will ask you for the serial number to help it search With the correct rxc file loaded into the Read columns simply click gt gt copy to transfer the defaults into the edit boxes and then click any of the three Write button to load them back into the XGA301 The right hand set of white editable text fields write fields is used to enter new values to be programmed into the XGA301 The values in these fields can either be entered manually or copied across from the read fields by clicking the vertical Copy button and then edited as required however greyed boxes under the Write buttons are not editable as they contain calibration data they can only be changed by copying data across from the Read fields Note that when you click on the copy button all three Config pages are updated at the same time and there is
35. e returned instrument CEI IN BE i MICHELL F0121 Issue 2 December 2011 Instruments Michell Instruments Messtechnik A 8010 Graz Riesstra e 146 ELEKTRONIK Tel 43 316 40 28 05 Fax 402506 Handelsgesellschaft m b H MICHELL Instruments http www michell com
36. ed points to keep continuity of the axes The clock keeps ticking during the pause period If you decide to access the menu of the XGA301 using the front keypad during data logging then the software will pause automatically A message appears on the screen informing the user that the unit is being accessed from the keypad Once the menu has been exited the software will continue data logging from where it left off Changing the Data Logging Parameters Mid Run Once the data logging has begun you may change the sample interval time by pausing the data logger and then entering a new value for the time interval The data logger can then be resumed with the new values in place NOTE Units e g seconds to hours cannot be changed once logging has started If you originally selected seconds then you may change the current value to a new value between 1 and 3600 seconds if you originally selected minutes then you may change between 0 02 and 360 and if you selected hours you may change between 0 01 and 6 hours NOTE It is not possible to modify the original total length of time that the data logging will run for once a run has commenced Working with Spreadsheets The data logger saves data files in a standard comma separated ASCII text format which can be readily imported into spreadsheet programmes such as MS Excel in order to produce plots and reports as desired For specific information on how to import text files into your spreadsheet program
37. ed to build up The cleaning operation pumps oxygen through the zirconia tube which burns the particulates away from the sensor surface Load Defaults If a mistake is made while programming the XGA301 it is possible to restore the machine back to its factory settings by loading the unique default configuration that is supplied on the software CD ROM The default set up can only be accessed using the software provided See Appendix C for further details Alternatively reset to generic factory defaults directly from the front panel keypad Press the ENT key to enter the user setup menu and select menu option 10 Load Defaults and press the ENT key to proceed The next screen will say Load Defaults with the prompt to press and hold the ENT key for 2 seconds to confirm To complete this press the ENT key until the bar graph has completed and the screen says Defaults Loaded This will give all the basic settings that are factory set Re calibrate the sensor and check all the settings are suitable 22 97487 Issue 1 April 2015 XGA301 User s Manual DEW POI NT SENSOR 5 DEW POI NT SENSOR The sensor is factory calibrated at 7 points and is supplied with a calibration certificate no further adjustment will be necessary This calibration is valid for 1 year from despatch from the factory and the unit or sensor can be returned for factory calibration Please note a sensor exchange program is in place details of which can be provided by yo
38. ents Changes applied 095E 05ppm 02 0 0mbar ENT Y 1 Calibrate ENT 2 095E 05ppm ENT 2 087E 05ppm 2 095E 05ppm 02 O calibrated Edit O HIGH Enter for 2s to calibrate Displays for 1 5s Calib O Middle ENT 1 013E 03ppm 1 030E 03ppm O2 O calibrated Edit O MIDDLE Enter for 2s to calibrate Displays for 1 5s Calib O Low ENT 1 000E 01ppm 1 000E 01ppm 02 O calibrated Edit O LOW Enter for 2s to calibrate Displays for 1 5s Vv ESC 2 Clean Sensor ENT Clean Sensor ENT Cleaning Sensor Cleaning Sensor Sensor cleaned Bargraph for 5s Displays for 1 5s e 3 Set Alarms Set Alarm 1 Assign to O Outputs On ENT Alarm 1 Alarm 2 02 Press Audible On Visible On Polarity T On Off On Off 1 000E 01 ENT Contacts N O Contacts N O Alarms set i il 4 Set Outputs ENT 02 out lin ppm 1 000E 01 0V ENT 2 500E 05 10V ENT T lin ppm raw mV log ppm Edit 0 ppm Edit 0 ppm 0 000E 00 0V ENT 1 250E 03 10V ENT 1 250E 03 10V Outputs set Edit low pressure value Edit high pressure value Displays for 1 5s Back to Menu List Changes applied yY 5 Set Units ENT Oxygen Auto 96 Pressure bar Pressure psi All units eet Auto Pressure N Bal bar psi mbar kPa torr Displays for 1 5s Exp ppm Auto ppm Continues on next page 4 97487 Issue 1 Apri
39. for enriched oxygen samples O gt 21 While the sensor is capable of measuring oxygen up to 100 itis NOT recommended as the sample wetted materials are not suitable for enriched oxygen Michell Instruments 21 ZI RCONI A SENSOR XGA301 User s Manual 4 3 4 4 Cleaning the Zirconia Sensor The sensor head is located inside the analyzer and comprises a zirconia ceramic tube that needs to be heated to 650 C before it will conduct oxygen ions The analyzer supplies heat to the sensor which is controlled very accurately by a regulated power supply incorporated in the instrument An internally mounted pressure sensor compensates for any fluctuations in pressure or vacuum caused by differing flow conditions The sensor can be cleaned at any time by pressing the ENT key on the keypad Figure 1 5 and scrolling down to menu option 2 Clean Sensor or using the software described in Appendix C Press the ENT key to proceed The screen displays Clean Sensor Press the ENT key again and the cleaning will take place The procedure takes approximately five seconds and the LCD display shows the progress of the operation Once finished the analyzer will take a moment to re stabilize The sensor is cleaned each time the unit is switched on prior to operation If you are operating in gases with large amounts of soot there is a risk that the sensor surfaces will become contaminated with particulates which will impair performance if allow
40. have drifted slightly because of natural ageing If you are using air as a calibration point then simply do a quick re calibration in the air to compensate for this I messed up the calibration procedure and the analyzer is not working properly Return the box to the factory defaults using the keypad or communications software by selecting Default Configuration followed by Write Configuration to Analyzer from the File menu Now try re calibrating the XGA301 The software will not talk to the XGA301 Make sure that you are using the correct cable as supplied pin 2 to pin 2 etc A crossed RS232 cable pin 2 to pin 3 etc will not work Make sure that your COM ports are recognised by your computer Check in your Windows device manager to see if there are any conflicts If you are using a USB Serial port adapter which does not have an FTDI chipset then you may encounter difficulties Contact us for advice I selected Write to the Analyzer and now the XGA301 is way off calibration Only select Write to the Analyzer once all the values are correctly entered in the boxes on the right The best procedure is to Read Analyzer Configuration and then press Copy so the values in the boxes are the same as those stored in the XGA301 memory You can then edit these values and then select Write to the Analyzer when finished Michell Instruments 49 APPENDI X E XGA301 User s Manual Q How do I get back to the factory cali
41. he XGA301 The default RS232 configuration is 57600 8 N 1 as shown in this example for COM1 Figure 7 XGA301 Default COM Properties Box Alternatively the baud rate can be reduced to 9600 via the menu option 8 Set Baud Rate using the front panel keypad on the XGA301 This setting is stored in EEPROM Connection Connect to RS232 socket at the back of the XGA301 using a 9 way D type plug Signals are as follows XGA301 D type Socket PC PLC Pin 2 Data Out gt Data In RX Pin 3 Data In gt Data Out TX Pin 5 Common Gnd Common Gnd Figure 8 XGA301 RS232 Pin Configuration All other pins 1 4 6 7 8 9 Not Used Reading Data Data is read using command D Send the single character D to the XGA301 The XGA301 replies with one of the following responses All valid responses end with CR amp LF where CR ASCII 13 and LF ASCII 10 Response Initialising CR LF Meaning XGA301 is still initialising Response Sensor heating CR LF Meaning XGA301 is still heating sensor to operating temperature 16 97487 Issue 1 April 2015 Response Meaning Response Meaning Response Meaning Response Meaning Response Meaning Response Meaning xx Response Meaning OPERATION XGA301 User s Manual ISensor cooling CR LF XGA301 is still cooling sensor to operating temperature This can happen when switching from Normal to Helium operati
42. ice When configuring the software please refer to Appendix C 6 1 Auxiliary Analog Output 0 V 4 mA amp 10 V 20 mA H O Calibration Gas 1 amp 2 are greyed out when an Easidew is fitted as the sensor must be returned to Michell Instruments for calibration H O Sensor ADC Reading High amp Low These boxes are for information purposes only and show the ADC value that the H O sensor is transmitting at 4 mA and 20 mA Alarm Source Use the drop down box to assign a detector to the alarm If you want the alarm to be based on dew point readings select HO from the drop down list Michell Instruments 23 DEW POI NT SENSOR XGA301 User s Manual Real Time Graph When selected the Easidew output will be displayed on a graph with the other measurand It is possible to have dual scaling on the Y axis The example below has oxygen and dew point File View DataLogger Help Plot coordinates 3 02 axis x1 27 ppm 02 Y1 250000 Linear Data acquisition stopped by user H20 Cdp Configuring the Second Y Axis The secondary Y axis located on the right hand side of the graph can be used to display either HO or pressure taken from the internal pressure sensor It is not possible to display H O and pressure at the same time The axis is linear and auto scaling To select the mode of the secondary axis select View and then Second Axis Display Choose from the avai
43. ing temperature LCD Display When a stable working temperature has been reached the LCD display will show the concentration of gas measured in percent or ppm on line 1 and the pressure in mbar bar kPa torr or psi on line 2 if an oxygen sensor is fitted If two sensors are fitted the second gas will be displayed on line 2 The symbol AL1 or AL2 may also appear in the bottom right of the LCD if the alarm system is enabled and an alarm condition applies The oxygen sensor reading may flash show U Range or O Range when its limits are reached and display error messages if there is a fault with the sensor See table below for more details Pump Control if fitted The flow rate of gas drawn into the analyzer can be controlled using menu option 9 Set Pump Flow The unit is supplied with the flow rate set to 100 which equates to approximately 1 2 l min If you wish to change the flow rate press the ENT key and use the UP DOWN arrows to change the value from OFF to 100 in 10 increments The pump can be switched on or off using the switch Figure 2 9 on the rear panel When using the unit with a pressurized gas source the pump can be switched off 97487 Issue 1 April 2015 XGA301 User s Manual OPERATI ON 2 7 Menu Access Passwords The analyzer has an option to set a password that will restrict access to the menus The password menu is disabled by default in the factory To password protect the analyzer press the ENT
44. internal or temperature sensors It is also possible to enable the alarm relay circuits enable an audible buzzer and enable a visual warning on the screen The alarms can be programmed by the user via the keypad Figure 1 5 on the front panel or using the software provided Appendix C To change the alarm settings scroll down to the menu option 3 Set Alarms and press the ENT key Now use the UP amp DOWN arrows to select Alarm 1 or Alarm 2 and press the ENT key The next screen shows the message Assign To Use the UP amp DOWN arrows to select O or Pressure depending on which measurement you want the alarm to work with and press the ENT key to proceed The default is O Michell Instruments 7 OPERATI ON XGA301 User s Manual The next settings configure the behaviour of the alarm Use the UP amp DOWN arrows to select ON or OFF for the following parameters 1 OUTPUTS This enables the rear panel relay outputs when ON is selected 2 AUDIBLE This enables or disables the audible buzzer inside the unit which will sound in an alarm condition 3 VISIBLE This enables or disables warning messages on the LCD screen on the front of the XGA301 During an alarm condition either AL1 or AL2 or a combination of both will flash at the bottom right hand corner of the display 4 POLARITY This determines whether a rising or falling alarm is being set Use the UP amp DOWN arrows to change the direction of the alarm to up or down
45. ion purposes only but are a useful diagnostics tool for Michell Instruments staff as unusual values can indicate a particular fault To help diagnose a fault please capture this window as shown above using the screen capture function and e mail it to info michell com 46 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX D 2 Sensor State These boxes should all indicate OK on a healthy analyzer Note that the XGA301 does not have a temperature sensor fitted so all references to temperature on this screen are not relevant The possible messages are OK High Low or Fault The High and Low messages indicate that the sensor is out of normal range The fault message will only display if the sensor is disconnected or has failed in some way 3 Digital The digital signals coming directly from the computer chip inside the analyzer can be monitored here To test the keypad is working correctly try pushing the buttons and watching the panel A correctly functioning key will turn the box red on the screen and the digital value for that particular key will show in the data box If the analyzer has an external thermocouple correctly fitted 2100 and 3100 series only then this will display a signal in the Temperature Sensor box 4 Log Diagnostic Data If you check this box then the software will automatically start to save a diagnostic file in the My Documents directory called XGA301 diagnostics data XXXX txt where XXXX is th
46. ion to the goods and services to be provided by the Supplier All warranty services are provided on a return to base basis Any transportation costs for the return of a warranty claim shall reside with the Customer Michell Instruments 53 APPENDIX F XGA301 User s Manual F 6 REACH Compliance Regulation EC No 1907 2006 Registration Evaluation Authorisation and Restriction of Chemicals REACH Michell Instruments is a manufacturer of moisture measurement and gas analysis instrumentation and is a downstream user of chemicals as described by the EU Council Directive 76 769 EEC The products we supply are not raw chemical products goods Under normal and reasonably foreseeable circumstances of application the goods supplied to you shall not contain or release any prohibited chemicals No listed SVHC Substances of Very High Concern appear within products manufactured by Michell Instruments Therefore the 0 1 mass per product or total usage of 1 tonne year will never be exceeded For these reasons we are neither required by obligation for registration nor for the creation of material safety data sheets MSDS for our products Our continued review of the SVHC Candidate List and latest additions is to ensure we remain compliant Michell Instruments maintains a hazardous material register in which MSDS data sheets are collated and we will check that our suppliers will comply to REACH requirements for all materials and substa
47. is box to programme the set point value at which you want the alarm to activate The units are in 9o ppm or mbar depending on which sensor as been assigned to the alarm 34 97487 Issue 1 April 2015 XGA301 User s Manual APPENDI X C Once you have finished editing the parameters select Write Configuration to Analyzer from the file menu and the new data set will be written to the XGA301 The XGA301 is reprogrammed using the new configuration The software then reads the new settings back from the XGA301 and displays them in the boxes on the left hand side confirming that the configuration was successful When you have finished programming the analyzer for new calibration gases the instrument must be re calibrated to benefit from the changes C 7 On Screen LCD It is possible to display an LCD emulator on the desktop of your PC This reproduces exactly the display on the XGA301 unit and is convenient if you are some distance away from the machine To activate the LCD select the UTILITIES menu and select the LCD on option This will display a small window showing the LCD that can be positioned independently anywhere on the desktop Ch Figure 12 On Screen LCD The blue LED indicator will flash to show that the display is updating C 8 Remote Calibrating and Cleaning With the on screen LCD display active it is possible to remotely calibrate the analyzer and clean the sensor Click on the down arrow icon in the bottom right hand corne
48. key and scroll down to the menu option 11 PASSWORD Pressing the ENT key again will ask you for the default password which is 0000 Enter this using the UP arrow and then the RIGHT arrow until 0000 appears on the screen then press the ENT key Once the password has been entered successfully you can choose between ENABLE CHANGE or DISABLE in the menu using the UP amp DOWN arrows To CHANGE the password to a new value use the UP amp DOWN arrows pressing the RIGHT arrow after each digit to move to the next digit and press the ENT key to accept If you press the ENT key at any stage it will accept whatever is currently displayed as the password The password must be 4 digits long and can be any combination of numbers from 0 9 Make sure that the new password is noted down If the password function ENABLE has been chosen each time the menu system is accessed the password prompt will display After the correct password is entered then the full menu will be accessible Pressing the ESC key takes you out of the password protected area and returns you to the Main Screen If the password has been forgotten contact Michell Instruments for advice on how to recover it 2 8 Alarms The XGA301 is fitted with two independent and fully programmable alarm relay outputs which can be programmed to be either normally open N O closes on alarm or normally closed N C opens on alarm Each alarm has the option of being assigned to the oxygen pressure
49. l 2015 XGA301 User s Manual OPERATI ON 096E 05ppm 02 ESC Back to Menu List No changes 0 0mbar Continued from previous page ESC 6 Display Setup ENT L2 Pressure Line 2 set Line 2 Options Refresh interval Mode Auto 1 000E 03mbar Edit ambient pressure Displays for 1 5s y 8 Set Baud Rate ENT Baud Rate 57600 ENT Baud Rate 57600 Baud Rate set 9600 57600 Displays for 1 5s Pressure None Interval 0 3s 0 1 1 5s Displays for 1 5s Displays for 1 5s Interval 0 3s LCD refresh set Mode None Mode configured ESC Vv 7 Pressure Mode ENT A Displays for 1 55 1 013E 03mbar Pressure set ENT ENT Y ENT ono ENT Pump flow 100 ESC 9 Set Pump Flow Pump flow 9096 BRE Select pump speed Displays for 1 5s hd ESC 10 Load Defaults ENT Load Defaults ENT Defaults Loaded Enter for 2s to load defaults Displays for 1 5s 11 Password ENT ENT Password Enable ENT Enable or Disable selected Enter password default 0000 Enable Disable Change Password 6234 Edit password Password Enable Password enabled Ly Back to Menu List Changes applied Figure 3 Menu Structure Michell Instruments 5 OPERATI ON XGA301 User s Manual 2 4 2 5 2 6 Set Up Ensure that the XGA301 analyzer is located away from ext
50. lable list 24 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX A Appendix A Technical Specifications Michell Instruments 25 APPENDIX A XGA301 User s Manual Appendix A Technical Specifications Sensor Type Zirconia Sensor 1 ppm to 30 Not suitable for enriched oxygen Calibration User Requires 2 or 3 user selectable gases 1 of the reading of 0 5 ppm whichever is greater Approx 5 seconds for a 90 step change gas flow rate of 1 NI min Stability Life Expectancy Measurement Range Calibration factory Dew point or ppm moisture content XGA301A2 only Please see Easidew Transmitter datasheet for more information Operating Temperature Warm Up Time Maximum Inlet Temperature Sample Flow Rate Measurement Range Response Time gt o o E y a lt gt ols lo 215 E Io la lt Maximum Inlet Pressure Display 16 x 2 character 9mm back lit LCD Power Supply 90 260 V AC 50 60 Hz 2 x 4 20 mA 2x alarm relays RS232 2 x 0 10 V XGA301A1 only 2 x 0 5 V XGA301A2 A3 only Standard 4mm ID 6mm OD nipple gas fittings on front panel Optional Rectus or Swagelok 6mm fittings rear panel fittings for XGA301A1 only XGA301A1 250 x 263 x 150mm 9 8 x 10 4 x 5 9 Dimensions XGA301A2 A3 350 x 263 x 150mm 13 8 x 10 4 x 5 9 XGA301A1 3 5 kg 7 7 lbs XGA301A2 A3 4 to 5 5 kg 8 8 to 12 1 Ibs Outputs Sample Connections Weight Note The XGA301A3
51. ld need to load each file in turn back into Excel to combine Michell Instruments 41 APPENDIX D XGA301 User s Manual D 5 Live Time Graphing Screen The XGA301 data logging package includes a live time graphing facility that allows you to monitor the progress of your data in a graphical format see below To access the graph check the box labelled Show Graph The graph will appear in a new window and can be accessed at any time without disturbing a run that is already in progress You can select Run and Stop from the Data Logger menu to begin and end data logging and the window can be minimized to and restored from the task bar while logging data To close the window and return to the main data logging page select Close Plot from the File menu or click on the close window button The features of the graph window are described below File View DataLogger Help Zoom box coordinates Time 0 E s ime X1 1210 4 X2 725 a ppm 02 0 Y1 8 550E 04 Y2 250000 Pressure 0 10ppm test txt Pressure mbar 100 E um 375 500 525 750 875 1000 1125 1250 Time Seconds Figure 19 Live Time Graphing Screen D 6 Main Graph Window The graph is an XY plot with time plotted on the X axis oxygen plotted on the primary Y axis Y1 and pressure plotted on the secondary Y axis Y2 The X axis and the two Y axes auto scale during data logging so that all data poi
52. led X2 and Y2 will appear showing the co ordinates in X and Y units of the second corner of the zoom rectangle as you drag the mouse pointer The plot will zoom and auto scale when you release the mouse button This can be repeated if you wish to zoom in even further To zoom back to the original size select Zoom Full from the View menu NOTE Although you can use the zoom facility during a live run the graph will auto scale to full size with each new data point Y Axis Graph Units You can toggle the Y1 oxygen units at any time from percent to ppm and vice versa Select O Units from the View menu and chose either percent or ppm The current selection is then displayed in the top right box labelled O Axis Oxygen Scale You can display the Y1 oxygen axis in linear or logarithmic format at any time by selecting O Scale from the view menu The current selection is then displayed in the top right box labelled O Axis Note that the zoom function is disabled when you are viewing on a log scale Second Y Axis The secondary Y axis located on the right hand side of the graph can be used to display the pressure taken from the internal pressure sensor The axis is linear and auto scaling To select the mode of the secondary axis select view and then second axis display Choose from none or pressure Loading an Old Run A previously logged data file can be loaded and viewed by selecting Open Data File f
53. lue at the mouse pointer This can be used to get a quick oxygen value from the graph Simply place the mouse pointer at a place of interest and read the corresponding X1 and Y1 values in the box D 10 Last data point During data acquisition the box labelled Last data point will appear at the upper middle of the graph window It displays the last data values read from the analyzer Michell Instruments 43 APPENDIX D XGA301 User s Manual D 11 D 12 D 13 D 14 D 15 D 16 Using the Cursor Clicking and holding the left mouse button with the pointer over the C at the top of the plot area activates the cursor which appears as a vertical dashed line on the plot While keeping the mouse button pressed you can now move the pointer anywhere in the plot area or on the C in order to move the cursor The box labelled Cursor to the upper right of the graph window will display actual values for oxygen temperature time and the data point number n at or immediately to the left of the cursor position The cursor can be used to investigate actual data values at specific points of interest on the graph Zooming You can zoom in to any part of the oxygen plot by simply placing the mouse pointer on the new graph start position and then clicking and dragging a new box to re size the graph The label on the box to the upper left of the graph window will change to Zoom box co ordinates and an extra set of co ordinates label
54. mal run mode The display will now correctly read the value of the calibration gas 6 Theanalyzer is now correctly calibrated and will read accurately between these two calibration points Note that this procedure can be performed remotely using the software described in Appendix D This process can be repeated for the third calibration gas if required 7 Ifat any time difficulties are encountered and the machine needs to be restored to its factory set calibration use the configuration software provided and load the default settings Each machine is provided with a unique file that contains the factory settings This is located on the CD ROM provided and is copied onto your PC during the installation process 8 Thethree calibration points are independent of each other so the analyzer can be calibrated in any order However note that O2 HIGH must always be greater than O2 MIDDLE which must always be greater than O2 LOW Typically the factory settings are O2 HIGH 20 95 O2 MIDDLE 0 1 1000 ppm and O2 LOW 0 001 10 ppm NOTE A FULL calibration must be performed to achieve good accuracy 20 97487 Issue 1 April 2015 XGA301 User s Manual ZI RCONI A SENSOR 4 4 1 4 2 ZI RCONI A SENSOR Start Up The sensor will take approximately four minutes to come up to temperature after which the XGA301 will begin to take measurements The progress of the sensor heater is shown in the form of a bar graph on the LCD Figure 1
55. me please refer to the help guide supplied with the programme Data is saved in comma separated value format with a txt file extension as the initial programme default However when entering the file name you can instead select a csv extension the programme will register the last used file extension as the new default The csv extension is recognised by MS Excel so that opening the file will automatically run MS Excel and this may be of benefit if your regional decimal separator is period rather than comma However if your decimal separator is comma you should continue to use the txt extension and open the file explicitly from within your spreadsheet programme defining the field delimiter as comma where appropriate Michell Instruments 45 APPENDIX D XGA301 User s Manual D 22 D 23 Disaster Recovery To prevent catastrophic loss of important data during a computer crash or power failure the data is automatically saved point by point in a temporary file called XGA301 temporary data file 2100xxx txt where 2100xxx is the serial number of your XGA301 This file is located in the same directory as the main XGA301 programme itself and can be renamed or copied to recover data that would otherwise be lost Note that this file is overwritten each time Run is selected from the Data Logger menu so make sure all data is recovered successfully before starting another run NOTE During a run using the auto
56. nces we use in the processes of our manufacturing In the unlikely event that any chemicals of concern appear in our products in quantities greater than 0 1 of total mass per product we will immediately inform you by correspondence according to the REACH Article 33 requirements Our current appraisal is however that we do not expect or foresee such an incidence January 2013 F 7 Calibration Facilities Michell Instruments calibration facilities are among the most sophisticated in the world and have been recognized for their excellence Traceability to the National Physical Laboratory NPL UK is achieved through our UKAS Accreditation Number 0179 This covers dew point over the range 90 to 90 C 130 to 194 F and also Relative Humidity Dew point calibrations are also traceable to the National Institute for Standards amp Technology NIST USA over the range 75 to 20 C 103 to 68 F NOTE Standard traceable calibration certificates for instruments and sensors are not issued under our UKAS accreditation 54 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX F F 8 Return Policy If a Michell Instruments product malfunctions within the warranty period the following procedure must be completed 1 Notify a Michell Instruments distributor giving full details of the problem the model variant and the serial number of the product 2 If the nature of the problem indicates the need for factory service then
57. nd Engineering Practices Sr F 2 Recycling Policy d Michell Instruments is concerned with the protection of the environment It is our commitment to reduce and eliminate from our operations wherever possible the use of substances which may be harmful to the environment Similarly we are increasingly using recyclable and or recycled material in our business and products wherever it is practical to do so To protect natural resources and to promote material reuse please separate batteries from other types of waste and recycle responsibly If batteries are not properly disposed of these substances can cause harm to human health and the environment The product that you have purchased may contain recyclable and or recycled parts and we will be happy to provide you with information on these components if required For further information please see the following sections F 3 WEEE Compliance Directive 2012 19 EU 4 July 2012 on Waste Electronic and Electrical Equipment WEEE The Waste Electronic and Electrical Equipment WEEE Directive places rules upon European manufacturers of electrical and electronic equipment The directives aim is to reduce the impact that electronic devices have on the environment Michell Instruments is in full compliance with the WEEE Directive and is registered with an approved recycler Registration No WEE JB0235YW and treats the requirement of the directive and the protection of the environment with the u
58. ng Software D 1 I ntroduction The XGA301 software includes a full data logging facility Data can be saved to a file automatically at regular intervals and the format is compatible with modern spreadsheet programmes such as MS Excel A live time graphing facility is also included which has many powerful features Note that the data logging facility will only function if the analyzer is in NORMAL run mode D 2 Setting up the Data Logger Click on the tab labelled Data Acquisition to display the following page gt Units Utilities DataLogger Help Config 1 Config 2 Data Acquisition Diagnostics Fimware w8 81 20 08 2008 Seconds 02mV 02 ppm Pressmbar No Temp Time Date Status 384 0 28 0 000e 0 3 0 19 27 46 20 08 2008 ALARM PR 385 0 28 0 000e 0 20 19 27 46 20 08 2008 ALARM PR 386 0 28 0 000e 0 20 19 27 47 20 08 2008 ALARM PR 387 0 28 0 000e 0 20 19 27 48 20 08 2008 ALARM PR 388 0 29 0 000e 0 19 27 50 20 08 2008 ALARM PR 389 0 28 0 000e 0 19 27 50 20 08 2008 ALARM PR 390 0 28 0 000e 0 8 19 27 52 20 08 2008 ALARM PR 381 0 29 0 000e 0 19 27 52 20 08 2008 ALARM PR 382 0 28 0 000e 0 j 19 27 54 20 08 2008 ALARM PR 383 0 29 0 000e 0 19 27 55 20 08 2008 ALARM PR 394 0 29 0 000e 0 19 27 55 20 08 2008 ALARM PR 395 0 28 0 000e 0 d 19 27 57 20 08 2008 ALADM PR 386 0 28 0 000e 0 I 19 27 57 20 08 2008 ALARM PR 397 0 28 0 000e 0 19 27 58 20 08 2008 ALARM PR 388 0 28 0 000e 0 I 19 27 59 20 08 2008
59. ng mode ICleaning sensor CR LF XGA301 has finished heating sensor and is cleaning the sensor for 5 seconds User setup active CR LF The configuration menu has been activated via the front panel keypad The menu will automatically time out 60 seconds after the last key was pressed or press the ESC key to return immediately to normal run mode Possible sensor fault CR LF The sensor has failed to reach operating temperature within 10 minutes from power up This may be due to the age of the sensor or because a high thermal conductivity gas is being used INo sensor or sensor fault CR LF Sensor is not connected or there is a fault in the sensor d2 959E 05 1 426E 01 2 000E 00 23 19 40 14 01 00 ALM1 amp 2 0 CR LF d means data is being sent 2 959E 05 is Oxygen reading in ppm data separator 1 426E 01 is Oxygen sensor reading in mV data separator 2 000E 00 is the internal pressure sensor reading in bar gauge data separator 23 19 40 is XGA301 time data separator 14 01 00 is XGA301 date in DD MM YY format n data separators ALM1 amp 2 means both alarm conditions 1 and 2 exist data separator 0 sensor state code 02 OK 1 0 O Range 2 O U Range 3 0 Fault 4 Press U Range 5 Press O Range 6 Press Fault CR ASCII 13 Carriage Return character LF ASCII 10 Line Feed character If no alarm conditions exist
60. ng temperature is 5 to 35 C 41 F or 95 F Avoid direct sunlight Do not use liquid cleaners aerosols or solvents to clean the case Use a damp cloth for cleaning Do not use this equipment near water Avoid touching the LCD display as this may cause permanent damage Make sure the rear ventilation slots and the fan on the rear panel are free of obstruction There are no user serviceable parts in this unit Do not attempt to repair the analyzer Refer all servicing to qualified Michell Instruments personnel This unit is NOT designed for use in life support systems No responsibility can be held for injury or loss of life caused by inappropriate use of this equipment The unit is not suitable for enriched oxygen samples O gt 21 2 97487 Issue 1 April 2015 XGA301 User s Manual OPERATI ON 2 1 Front Panel Figure 1 XGA301 Front Panel 2 2 Rear Panel Figure 2 XGA301 Rear Panel 6 Terminal block 8 Cooling fan 9 Pump On Off switch 2 3 Menu System All of the user programmable functions are accessed via a menu system which is controlled using the front panel keypad Figure 1 5 To access the menu press the ENT key To escape and return to the operating screen press the ESC key at any time The menu system flow chart is shown below Michell Instruments 3 OPERATI ON XGA301 User s Manual 2 3 1 Menu Structure ESC Back to Menu List No changes Back to Measurem
61. nt pressure conditions can also be entered to improve accuracy of the correction factory setting is 1013 mbar absolute To access this function scroll down to menu option 7 Pressure Mode and press the ENT key The desired mode can then be selected using the UP amp DOWN arrows and pressing the ENT key to store and proceed The two modes available are 1l None If this mode is selected then there is no pressure correction performed on the oxygen reading The pressure and oxygen sensor act independently If the sensor is working in air 20 9596 and the pressure is doubled to 1000 mbar then the reading will also double to 41 996 This is the correct oxygen partial pressure in air at 2 bar since there is a simple linear relationship between pressure and concentration 2 Auto This is the factory default setting If the Auto mode is selected then the XGA301 uses the reading from the internal pressure sensor to correct the oxygen partial pressure and maintain a concentration reading If the sensor is working in air 20 9596 and the pressure suddenly jumped to for example 500 mbar above atmospheric the oxygen reading would remain at 20 9596 because the sensor has been corrected for the pressure change This allows users who are working with fluctuating input pressures to maintain a meaningful reading of oxygen concentration that will only be affected by changes in gas composition and not gas pressure NOTE When this mode is activated the user
62. nts are shown on the graph 42 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX D D 7 Plot Colors The default colors used on the graph are set to blue for oxygen and red for pressure To change the colors double click on the colored axis label at the top of each axis A color palette window will appear see Figure 20 and a new color can either be chosen from a color box or for more variety by clicking the Define Custom Colors button Click on OK to select the new color or Cancel to return to the graph without change m m Es E m IT m Define Custom Colors gt gt coa Figure 20 Plot Color Palette Menu D 8 Graph Titles and Labels If you want to change the text of the graph axis labels place the mouse pointer over the text and do a single left click to enter edit mode The text can then be modified Similarly to change the title of the graph place the mouse pointer over the title and click once to edit If you choose not to enter a title the graph will display the path and filename of the run as the new title once the run has finished Note that these changes are only temporary and will be overwritten by the defaults if a new run is started or the graph window is closed and reopened They are provided so that the plot may be printed with alternative labels D 9 Plot Co ordinates The box labelled Plot co ordinates to the upper left of the graph window displays the actual plot co ordinate va
63. onditions Notes 1 The current outputs are active self powered outputs they are not loop powered The voltage 0 to 10 V outputs produce non zero voltages during start up fault and over under range conditions if 1 V to 5 V outputs are required with these conditions indicated by corresponding voltages between 0 V and 1 V the current outputs can be used with a 250 Q load resistor 3 Alarms are de activated during start up initialization and when a fault condition occurs on the assigned sensor Michell Instruments 13 OPERATI ON XGA301 User s Manual 2 11 2 12 Setting the Display Units The notation used by the display is fully programmable to suit your needs using the keypad Figure 1 5 or the software provided Appendix C The following options are available 1 Oxygen The oxygen reading can be displayed in percent e g 20 95 ppm e g 0 01 ppm or scientific e g 2 095E 05 ppm If percent is selected the XGA301 will display oxygen as a percentage down to 0 196 and ppm below this value There are also options to display the oxygen reading in terms of a pressure units will be the same as the units selected for pressure or a nitrogen balance N reading In this case the reading displayed is 100 0 N so for example in air 21 the nitrogen balance reading will display 79 N NOTE This is NOT an actual nitrogen reading 2 Pressure The reading can be displayed in mbar bar psi torr or kPa To
64. or the 4 20 mA and 0 10 V signals The default is LIN ppm Temperature Units Enable Not available for the XGA301 Pressure Units See Section 2 12 for a full description Use the drop down menu to select MBAR KPa TORR BAR or PSI as the unit for pressure measurement The default setting is MBAR Pressure Correction Mode See Section 2 14 for a full description Use the drop down menu to select NONE AUTOMATIC or MANUAL The default setting is NONE Operating Mode Not available for the XGA301 Auxiliary Output Parameter Not available for the XGA301 LCD Refresh interval Use the drop down menu to select a refresh rate for the LCD min 0 1 max 1 5 sec The default is 0 3 seconds LCD Second Line Option See Section 2 13 for a full description Use the drop down menu to select PRESSURE or NONE Pump Flow Rate See Section 2 6 for a full description Use the drop down menu to select a pump flow value from 10 100 or OFF The default is 10096 Password option See Section 2 7 for a full description The password is factory disabled and set to 0000 Use the drop down menu to enable or disable the password feature and the password box can be used to enter a new password Note that you will be prompted to enter the original password to make changes to the password or its status XGA301 User s Manual XGA301 User s Manual APPENDI X C C 6 1 Configuration 2 Screen ile Comms Units Utilities DataLogger Help Config 1 E ig
65. ppendix C Software Installation Michell Instruments 29 APPENDIX C XGA301 User s Manual Appendix C Software I nstallation C 1 Software I nstallation It is possible to programme a range of variables to the XGA301 using an RS232 link with a PC running MS Windows all versions and the supplied XGA301 software The software is installed automatically by inserting the XGA301 CD into the CD ROM drive If auto installation does not start then click the Windows START button and select RUN Type X setup exe where X is the drive letter of the CD Alternatively access the CD from Windows Explorer or the My Computer icon on your desktop and double click on the Setup exe programme Follow the on screen instructions to install the programme onto the hard drive Once installed access the programme by clicking START PROGRAMS XGA301 Software The software has been tested successfully on most language machines including Chinese Korean amp Japanese and all current versions of Windows operating system We do not recommend the use of Vista as the unit will not communicate successfully with this operating system Note that software is regionally aware and will therefore accept and display data using the decimal separator that is set in the PC s Regional Settings in the Control Panel For example in the UK or US you might enter the value 2 5 in continental Europe this would normally be entered as 2 5 assuming the PC s Regional Settings ha
66. r of the LCD display to expand the window Cailibrate Middle 02 Cailibrate Low 02 Clean Sensor A Figure 13 Remote Calibration and Clean Function Use the four buttons to calibrate or clean the sensor directly from the PC Before calibrating the analyzer with gas make sure that you know the exact O concentration in your gas bottle AND you have a calibration certificate from the gas supplier confirming the concentration You can calibrate the analyzer in any order but remember that the gas value for O2 HIGH must be greater than the gas value for O2 MIDDLE which must be greater than the gas value for O2 LOW Allow sufficient time for the calibration gas to pass over the sensor and let the reading on the LCD stabilize This is extremely important to perform a successful and accurate calibration Michell Instruments 35 APPENDIX C XGA301 User s Manual The software uses the three calibration gas values already stored in the XGA301 as a starting point These are typically High 20 95 Middle 0 1 and Low 0 001 as set in the factory but may be different if the user has recalibrated with other gas values in the past Either way you are given an option to change the cal gas value before proceeding to the actual calibration Assuming you are using fresh air 20 95 to calibrate O2 HIGH then simply click on the button labelled Calibrate High O to see the following Rapidox High 02 20 95 Figure 14 Calibration Gas
67. ranspose the provisions into their respective national laws by 2 January 2013 Under the provisions of the RoHS2 EU Directive 2011 65 EU Article 3 24 defines Control and Monitoring Equipment specifically as monitoring and control instruments designed exclusively for industrial or professional use RoHS2 EU Directive 2011 65 EU states the closing date for compliance of any Control and Monitoring Equipment product sold into the EU market place as 22nd July 2017 However the careful design policy of all Michell Instruments products continues to attain compliance in the shortest practical timescales and strives to ensure that less than 0 1 of total mass per product of all non compliant materials appear within them Michell Instruments continues to monitor suppliers and material sources to ensure that compliance of goods provided is maintained January 2013 F 5 Warranty Unless otherwise agreed the Supplier warrants that as from the date of delivery for a period of 12 months the goods and all their component parts where applicable are free from any defects in design workmanship construction or materials The Supplier warrants that the services undertaken shall be performed using reasonable skill and care and be of a quality conforming to generally accepted industry standards and practices Except as expressly stated all warranties whether express or implied by operation of law or otherwise are hereby excluded in relat
68. reme heat and dirty environments Plug the unit into a suitable supply using the power cable supplied and into the power socket Figure 2 7 on the rear panel Make sure that the cooling fan Figure 2 8 is not obstructed during operation Gas Connection The unit is supplied as standard with push fit gas connectors located on the front or rear panel of the instrument depending on configuration Place the retaining collar over the sample tube 6mm OD 4mm ID then push the tube onto the GAS IN Figure 1 2 and GAS OUT Figure 1 3 connectors and tighten the retaining collar by hand Alternatively the unit can be supplied with Quick connect Rectus or Swagelok 6mm connections Warning when using Rectus fittings Always connect the outlet fitting before the inlet to avoid pressurizing and damaging the internal pipe work and or sensor There is an optional internal sample pump if fitted there will be a Pump On Off switch Figure 2 9 on the rear panel The pump will draw gas at a flow rate depending on the value set either in the software or from the menu The default setting is one hundred percent Turn the unit on using the red power switch on the front Figure 1 4 The LCD Figure 1 1 will display the firmware version and may be followed by the message HEATING SENSOR dependent on sensor fitted Allow thirty minutes for the unit to stabilize fully This allows the components of the analyzer to reach a stable work
69. revent false alarms and the relay contacts for the affected channel will go to the programmed N O or N C setting For more information please refer to Table 2 8 97487 Issue 1 April 2015 XGA301 User s Manual OPERATI ON 2 9 Analog Outputs The XGA301 analyzer provides various analog outputs The standard industrial analog outputs 0 to 10 V and 4 20 mA for both oxygen and temperature or internal pressure are accessible via the terminal block Figure 2 6 on the rear panel These outputs have a 12 bit resolution approximately 1 in 4000 and the lower and upper values are fully user programmable using the keypad Figure 1 5 or the software provided Appendix C In the case of oxygen three output mode options are provided for setting the outputs in order to give the user maximum flexibility 1 LIN The linear output mode setting produces an output that is scaled linearly between 0 and 10 V or 4 and 20 mA So for example if the scale is set 0 V 0 O and 10 V 100 O then 5 V would indicate an oxygen reading of 5096 O The scaling of this example is shown in the following plot from which other intermediate values can also be read Linear output mode Ei 2 g 23 o o o gt N o O2 mA output Aa o o Figure 4 Graph Showing Linear Output Mode Option For Oxygen The following general formulae can be used to calculate the oxygen from the voltage or
70. rom the File menu and selecting the appropriate TXT or CSV file A progress bar is displayed while the data is being imported Note that very large data files may take several seconds to load The data is re graphed and you can zoom label axes change colors etc before printing the graph 44 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX D D 17 D 18 D 19 D 20 D 21 Printing Graphs You can print the graph at any time by selecting Print Plot from the File menu This will bring up the printer dialogue box for your specific printer where you can chose various printing options Make sure that the printer page is set to landscape to obtain a full size print out Data Logging in the Background It is possible to begin data logging and then minimize the windows to continue working with another application To minimize the graph simply click on the minimize button on the blue title bar at the top of the window You can then use the ALT TAB keys to take you to other programmes already running To return to the graph simply maximise from the start menu bar or press ALT TAB again If the graph does not redraw immediately select Zoom Full from the View menu to redraw Pausing the Data Logging You can pause the data logging at any time during the run by selecting the data logger menu and selecting pause Repeat the action to continue noting that the live graph will draw a straight line between the paus
71. ropriate boxes The value can be entered either in 9o or ppm depending on the units selected The default is 9o The default values are 25 for the high setting and 0 001 for the low setting 4 Auxiliary Analog Output 0 V 4 mA 10 V 20 mA Use these two boxes to set the High and Low auxiliary e g pressure sensor values for the analog outputs 6 on the rear panel For example if you want 0 V 4 mA to represent 0 mbar and 10 V 20 mA to represent 100 mbar then enter these two values into the appropriate boxes The units are fixed in mbar 5 Absolute Ambient Pressure Use this box if you want to enter the current ambient pressure in mbar This value is used in the automatic pressure correction function only and provides enhanced accuracy in the correction The default is 1013 mbar which is the average ambient pressure in the UK Michell Instruments 33 APPENDIX C XGA301 User s Manual C 6 2 Alarm Configuration Screen ile Comms Units Utilities DataLogger Help Config 1 Config 2 1 Alarm 1 High Alarm Source Alarm Dutputs Audible Alarm Visible Alarm Rising or Falling Alarm Contacts Normally Open or Normally Closed Alarm 1 Set Point Alarm 2 Low Alarm Source Alarm Outputs Audible Alarm Visible Alarm Rising or Falling Alarm Contacts Normally Open or Normally Closed Alarm 2 Set Point Gi Figure 11 Alarm Configuration Screen NOTE The actual values u
72. sed may differ from those shown above 1 Alarm Source Use the drop down box to assign a detector to the alarm If you want the alarm to be based on oxygen readings select oxygen from the drop down list The choices are oxygen pressure or temperature 2 Alarm Outputs This option enables or disables the alarms on the rear panel labelled Alarm High and Alarm Low Make sure these are enabled if you wish to use the signals from the alarm circuit 3 Audible Alarm This option enables or disables the audible buzzer fitted to the XGA301 internally When an alarm condition occurs the buzzer will emit a continuous noise to alert the operator 4 Visible Alarm This option enables or disables the visual warning on the front LCD When enabled and an alarm condition occurs the message AL1 or AL2 will flash in the lower right hand corner 5 Rising or falling Alarm This option allows the alarm to be set as a rising or falling type If the alarm is rising then the reading must rise above the set point for the alarm to be activated If the alarm is falling then the reading must fall below the set point for the alarm to activate 6 Contacts N O or N C This option allows the user to programme how the relay contacts are set on the rear panel Normally Open means that the contacts are open circuit when an alarm is not activated and Normally Closed means that the contacts are closed when the alarm is not activated 7 Alarm Setpoints Use th
73. tered If the mV signal coming from the sensor is out of the expected range the following message is displayed This normally indicates one of two things that you are using the wrong Cal gas value compared with the actual gas flowing over the sensor OR the sensor is getting old and can no longer output the expected signal required for a healthy calibration 2 Bad Pressure Reading The XGA301 software checks to see what the gas pressure is before allowing the calibration to continue If the pressure is outside the range 25 mbar to 25 mbar gauge then the following message is displayed Bad Calibration Ml Gas pressure out of range A Continue calibration anyway CS This normally indicates that you are allowing gas from a cylinder set at too high pressure to enter the analyzer Try displaying the pressure reading on the second line of the LCD and adjusting the gas regulator to trim it close to 0 mbar If you are using a standard gas regulator then try switching off the sample pump on the rear of the analyzer OR better still use a demand flow regulator and allow the gas to enter the analyzer from the draw of the pump NOTE The above are only advisories and you can proceed with the calibration if you believe everything is checked and correct Michell Instruments 37 APPENDIX C XGA301 User s Manual C 10 C 10 1 C 10 2 C 10 3 Software Utilities The utilities menu is located on the main file menu
74. tmost importance All Michell Instruments products are appropriately marked indicating their requirement for recycling It may be required to return certain instruments for treatment at the end of their working life Feb 2013 52 97487 Issue 1 April 2015 XGA301 User s Manual APPENDIX F F 4 RoHS2 Compliance Directive 2011 65 EU of the European Parliament and of the Council of 8 June 2011 The Restriction of Hazardous Substances RoHS Directive places rules upon European manufacturers of electrical and electronic equipment The directives aim is to reduce the impact that electronic devices have on the environment According to the EC Directive 2002 95 EC Michell Instruments products qualify as Category 9 Control and Monitoring Equipment Under the 2002 95 EC Directive Category 9 products are exempt from compliance with the Directive However the careful design of all Michell Instruments products takes into consideration the requirements of the Directive and wherever possible compliance is achieved All future products will be developed entirely using compliant materials Furthermore Michell Instruments is taking active steps to remove non compliant materials and components from existing products wherever these may occur Presently none of the non compliant materials are known to occur in Michell Instruments products The new Directive 2011 65 EU RoHS2 entered into force on 21 July 2011 and required all Member States to t
75. ts If the gas value is not what you require you can edit the value in ppm scientific notation using the UP DOWN and RIGHT arrows on the keypad The cursor flashes underneath the digit to edit For example air 20 95 should be entered as 2 095E 05 ppm 209 500 ppm NOTE It is not possible to go backwards to edit a digit to the left of the cursor Instead keep pressing the RIGHT arrow and the cursor will wrap around back to the beginning Alternatively press the ESC key to start again Press the ENT key when you are ready to proceed Scientific Format Meaning Equivalent Equivalent ppm Percent 1 000E 06 ppm 1 000 x 1 000 000 1 000 000 ppm 100 00 2 095E 05 ppm 2 095 x 100 000 209 500 ppm 20 95 1 000E 05 ppm 1 000 x 100 000 100 000 ppm 10 00 Table 2 Common Scientific Format Michell Instruments 19 CALI BRATI ON XGA301 User s Manual 2 The sensor needs to be exposed to the first calibration gas from a cylinder or exposed to ambient air 20 95 if this is the calibration gas of choice Allow several minutes to pass to flush the sensor properly Wait for the top line of the display Figure 1 1 to become stable To complete the calibration press and hold the ENT key for two seconds During this time a bar graph will progress across the lower display The analyzer will then recalibrate and display O2 recalibrated and then return to normal run mode The display will now correctly read the value of the first calibration gas
76. uld consider checking the Auto date stamped file option This feature will save the data at midnight for the previous twenty four hours and so on until the data logging is complete OR the user interrupts The data file is stored with a date suffix in brackets in yy mm dd format This feature ensures that data is saved periodically in sensible sized files This will prevent the computer from crashing and will also ensure that the data is small enough to fit into an Excel spreadsheet As an example the user wishes to run the data logger for seven days recording every minute starting at lunchtime on 12th November 2005 He starts the data logger with the auto date stamp function enabled When prompted he gives the filename as test1 In this situation the data logger will run from lunchtime to midnight and then save the first file as test1 2005 11 12 The data logger then clears and continues for another twenty four hours until midnight the following day The data is then stored as test1 2005 11 13 This will continue for seven days when the data logger will finish After this the user will have a sequence of files testi 2005 11 12 txt testi 2005 11 13 txt testi 2005 11 14 txt and so on Combined together they represent all the data over the last seven days Note that the XGA301 uses the computer clock and date to perform this action so make sure that they are correct before starting a run To view the data in its entirety the user wou
77. ur local Michell office or representative To measure water dew point correctly you must use appropriate fittings tubing and regulators You should only use FEP or stainless pipe when measuring dew point as most plastics are highly permeable to water molecules If you are running pipes from a gas regulator make sure good quality Swagelok type fittings are used and any gas regulators are fitted with stainless steel diaphragms The Rectus fittings on the XGA301 will maintain a gas tight seal and allow a sample of low dew point to be trapped inside to reduce sampling times Warning Always connect the outlet fitting before the inlet to avoid pressurizing and damaging the internal pipe work H O Reading The default setting for Line 2 of the display is H O Other options for line 2 are Pressure displayed in mbar bar psi torr or kPa or to alternate between pressure and HO both H O and pressure are displayed alternatively or the date and time displayed dd mm yy HH mm ss Use the UP amp DOWN arrows to select the display required and press ENT to store and return to normal operating mode If either the dew point or pressure sensor fails in any way they will report Fault H O or Fault Press on the second line of the display If pressure correction is set to Auto and there is a fault with the pressure sensor then the oxygen reading will also display Fault to warn that it may be unreliable Please contact Michell Instruments for adv
78. ure 14 Calibration Gas Confirmation CICLO ii ee 36 Figure 15 Calibration Gas Update SON EE 36 Figure 16 Calibration Confirmation BCFOBIT eite tan tuxu n kae nA PIRE cu ue na aea 36 Figure 17 Software Lbs Menu Sareen ida 38 Figure 18 DATA Logom NI M Eet 40 Figure 19 Live Time Graphing SO PEN 42 Figure 20 Plot Color Palelte MCA V 43 Figure 21 Eelsten m 46 Tables Table 1 Analog Output Settings and Alarm Status for Certain Conditions 13 Table 2 Monuenleer i aei d 19 Table 3 Sensor Reading Display Possibilities ioseeae enean taa eea pi peek ith sees pa PAS Eu basata ti daas 2 Michell Instruments V XGA301 User s Manual Appendices Appendix A Technical Zeie 26 Appendix B EU Declaration or COnPerblibyue daga en abc GER 28 Appendix C SoftWare EN E 30 cl SONWare Ins CM OI EE 30 C2 Start M 30 ORC A An 31 C 4 Cono FO e 31 C 5 Re onfig ring the Analyzer iia 32 C 6 Configuration Mesi oo i 32 C 6 1 C nng ration 2 SERE ee 33 Co Alarm CODIQURALIOD SOPORE sue uo enixe mi Ee EE Ee 34 Cil On Screen raid drid do 35 C 8 Remote Calibrating and CISMA E 35 29 Calibration Error MESSAGES oeessseskeergteeeuue gegeckst 37 C10 Ee IES Geo 38 C101 Setting Analyzer Date amd Tre una 38 5 102 Check for Hegle gees 38 10 3 Image GODS ti 38 Appendix D Dara Logging SON EE 40 D 1 Mangels ON ETT T Ss 40 D 2 Setting up the Data
79. ve been set up to use as the decimal separator C 2 Start Up Make sure that the XGA301 is connected to a free serial port on the rear of your computer These will nearly always be COM1 or COM2 but the software will scan through the ports until it finds the XGA301 The analyzer must be switched on for this to succeed and while you are communicating with it On start up the software will locate the XGA301 and display the following page le Comms Units Utilities DataLogger Help Config 1 Config 2 Alarm Config Data Acquisition Diagnostics FAW 01 01 09 02 18 08 2010 10 15 28 Oxygen Units and Format Oxygen Analogue Output Mode Pressure Units Pressure Correction Mode LCD Refresh Interval LCD Second Line Option Pressure Pump Flow Rate 100 Password Protection Disabled Password Figure 9 Configuration Screen NOTE The actual values used may differ from those shown above The yellow status box at the bottom will display confirmation that the XGA301 was found and the result of the last action or any error messages if there is a problem with communication If you experience problems check that your serial cable supplied is correctly fitted to a valid serial port Also check the status of your COM port settings in Device Manager accessed by clicking START Settings Control Panel 30 97487 Issue 1 April 2015 XGA301 User s Manual APPENDI X C C 3 On Screen Help You

XGA301 Manual.indd

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