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MultiRAE User`s Manual

1. M Display Sensor names M Display Peak values M Display Minimum values M Display STEL values M Display TWA values M Display Battery voltage M Display Clock Run time Internal temperature M Configured for Manual datalog yes Start Stop Datalog Y Start or Stop Datalog M Go to Display LEL gas name no Display Datalog mode M Display LEL gas name if sensor is present M Display VOC gas name if sensor is present M Communicate with PC Y Monitor will pause OK Y Ready N Return to Instantaneous display M or N Return to Instantaneous display A 1 APPENDIX A PROGRAMMING MODE Press N and MODE together for 3 seconds to enter Mode to return Calibrate Monitor Press Y to select menu A Y Fresh Air Calibration i Multiple Sensor Calibration N N Single Sensor Calibration Modify Span Gas Value ws Change LEL VOC Span Gas Change Alarm Limits Change High Alarm limit Change Low Alarm limit i N Change STEL alarm limit Change Average alarm limit Y Mods 7 View or Change Datalog Reset Peak and Minimum Clear All Data 4 Change Datalog Period Select Data Type View Datalog Enable Disable Datalog Mode Change Monitor Setup Ta Change Site ID Y Change
2. scsssscssceeessceees G 1 Main Contact Numbers Outer Back Cover iii A WARNING A DO NOT proceed before reading This manual must be carefully read by all individuals who have or will have the responsibility for using maintaining or servicing this product The product will perform as designed only if it is used maintained and serviced in accordance with the manufacturer s instructions CAUTION To reduce the risk of electric shock turn off power before removing the monitor cover Disconnect the battery before removing sensor module for service Never operate the monitor while the cover is removed Remove monitor cover and sensor module only in an area known to be non hazardous The model PGM 50 equipment is classified as to intrinsic safety for use in class I division 1 groups A B C D or non hazardous locations only Special Note afi When the PGM 50 Multi gas Monitor is taken out from the transport case and turned on for the first time there may be some residual organic or inorganic vapor trapped inside the detector chamber The initial PID or toxic sensor reading may indicate a few ppm Ensure an area free of organic or toxic vapor and turn on the monitor After running for several minutes the residual vapor in the detector chamber will be cleared and the reading should return to zero Tp The battery of the MultiRAE PLUS monitor will discharge slowly even if it is turned off If the mon
3. Figure 5 17 Enable Datalog Dialog Box Figure 5 17 shows that the instrument s datalog feature is currently enabled If the user wants to change the datalog option click another datalog option radio button and type the three digit authorization code in the Authorization Code field then click the OK button to close the dialog box After the datalog option is changed a message box will appear on the screen to let the user know that the datalog option is successfully changed Note Each MultiRAE PLUS with datalogging function should be shipped with a 3 digit authorization code If the code is missing call the factory s Customer Service Department to obtain one COMPUTER INTERFACE FOR MULTIRAE PLUS 5 8 Upgrade the Firmware To upgrade the firmware in the MultiRAE PLUS monitor open the ProRAE Suite software Do not open any configuration file or data file so the ProRAE Suite software has no client window open as shown in Figure 5 16 Click Option gt Load Firmware menu item a message box will appear to remind the user to connect the instrument to the PC through the serial port After making sure that the instrument is connected to the PC click the OK button After the ProRAE Suite software made successful contact to the instrument connected to the PC an Open file dialog box is displayed as shown on Figure 5 18 Select the firmware file a07 which is going to be loaded into the instrument click the OK button to start the
4. will appear Press Y to confirm the change N or MODE key to abandon the changes 4 The pump stall threshold should be re adjusted if the pump speed is switched to low or high or water trap filter changed or the firmware configuration has been totally refreshed 11 Check Back Light Threshold This display can be used to adjust the LCD back light turn on and off threshold Verify that the threshold is 100 which will fit almost all of the situation 12 Serial Number and Pump Toggle This display shows the unit s serial number If a pump is installed and pump speed control circuit available the display Pump Low High may be toggled by pressing the N key Note that changes made here are only for testing the pump condition and do not become saved in the nonvolatile memory see Section 4 7 to update the pump speed setting 13 Display Battery Duration Time This display shows the run time of the last time the unit powered itself off due to a low battery It is useful for battery life testing 14 Communicate with PC This display give the option of communicate with the PC for upload or download activity TROUBLESHOOTING 8 2 Troubleshooting Table Table 8 2 Possible Reasons amp Solutions Cannot turn Reasons Discharged battery on power Defective battery after Microcomputer hang up charging the battery Solutions Charge or replace battery Disconnect then connect battery t
5. Battery voltage and shut off voltage in volts Real time clock run time and temperature Datalogging mode or Start Stop Datalog menu to enable disable datalogging if manual datalogging mode is selected LEL or VOC gas names if the LEL and VOC sensor are installed Print Reading menu to print the reading to the RAE Printer Communicate with PC menu to send or receive data between PC and the MultiRAE PLUS monitor 2 6 OPERATION OF MULTIRAE PLUS 2 3 Power On Off To turn on the MultiRAE PLUS Multi gas Monitor press MODE key The audio buzzer will beep once and the display will show ON and then MultiGas Monitor Ver n nn to indicate the software version number The custom power on name which can be changed by the customer using the ProRAE Suite Software The model number serial number current date and time temperature of the monitor are displayed next The monitor will then go through each sensor socket to check if a valid sensor is installed If a new sensor is installed a message to remind the user to calibrate the sensor will be displayed followed by a message that the alarm limits have been reset to default values for the new sensor If a sensor reaches its expected end of life a Warranty Expired message will be displayed Next the monitor displays the preset alarm limits for each sensor battery voltage shut off voltage user mode alarm mode datalog mode available d
6. Press the MODE key any time during Step 2 to reduce waiting time If the sensor failed the calibration the sensor name and an error message failed continue will appear Press N or MODE key to abort the calibration and move directly to the next sub menu 4 15 PROGRAMMING OF MULTIRAE item Press Y key to continue single gas calibration In either case the current calibration data will not be changed Oxygen Sensor Calibration The oxygen sensor calibration is slightly different from all other sensors The oxygen sensor measures a range from 0 to 30 of oxygen in the air During fresh air calibration the oxygen sensor is calibrated to fixed 20 9 of oxygen During single sensor calibration the user can supply a pure nitrogen gas so that the oxygen sensor can be calibrated to 0 of oxygen The user can also supply other span concentration of the oxygen e g 19 5 to calibrate the oxygen sensor A question 0 oxygen will be asked Enter Y key if the pure nitrogen gas is used to calibrate the oxygen sensor Otherwise enter N key to calibrate oxygen sensor to other span oxygen value During both single or multiple sensor calibration the oxygen sensor will be calibrated to the span value defined in Section 4 4 4 Note After a 0 oxygen calibration the user must perform a fresh air calibration to ensure that the oxygen sensor is calibrated correctly Calibration Time Stamp Whe
7. Single Sensor Calibration Modify Span Gas Value Change LEL VOC Span Gas The preferred calibration method for monitors with pumps is to place the calibration gas in a gas sample bag Tedlar bag Connect the bag to the MultiRAE PLUS gas inlet port when you are ready to perform the calibration Users may find it more convenient to connect the MultiRAE PLUS directly to the gas bottle using a flow on demand type regulator Calibration through such a regulator will produce similar results to the sample bag method with most gases but flow on demand regulators are not recommended with HS In an emergency the MultiRAE PLUS can also be calibrated directly from a fixed flow regulator with a flow rate between 0 5 and 1 0 liters per minute MultiRAE PLUS diffusion monitors must be calibrated using a fixed flow regulator with a flow rate between 0 5 and 1 0 liters per minute Diffusion monitors are supplied with a special calibration adapter that covers the gas diffusion port PROGRAMMING OF MULTIRAE The calibration adapter links up the inlet port of the MultiRAE PLUS Monitor to the gas sample bag see Figure 4 1 Figure 4 1 Connection of Calibration Gas MultiRAE PLUS diffusion monitors must be calibrated using a fixed flow regulator with a flow rate between 0 5 and 1 0 liters per minute Diffusion monitors are supplied with a special calibration adapter that covers the gas diffusion port PROGRAMMING OF MULTIRAE 4 4 1 Fresh Ai
8. error occur during serial port initialization will appear when a user tries to communicate between the PC and the MultiRAE Plus monitor COMPUTER INTERFACE FOR MULTIRAE PLUS 5 5 Processing the Configuration Data The ProRAE Suite software allows the user to edit the configuration data send the configuration data to the MultiRAE Plus and receive the configuration data from the MultiRAE Plus monitor The following subsection describes the detail of each operation COMPUTER INTERFACE FOR MULTIRAE PLUS 5 5 1 Editing the Configuration Data There are two different sources of the configuration files One is loaded from the unit the other is from a configuration file To load and review the configuration of the monitor From the main menu of the ProRAE Suite software select the Receive Configuration menu item from the Communication dropdown menu then click the OK if the unit is connected to the communication port and ready To load a saved configuration file From the main menu select Open from the File dropdown menu a dialog box appears Select the Files of type to Config Files cfg as shown in Figure 5 5 7x Sras Joe 3 Default_MultiRAE_V216 cfg 3 Default_T oxiRAE_V122 cla 23 Default_UltraRAE_ 224 cfg 1 Default_UltraRAE_V230 cfg pC Figure 5 5 Open Dialog Box 5 9 COMPUTER INTERFACE FOR MULTIRAE PLUS There should be one or more configuration files in the file l
9. E Figure 5 8 Gas Parameters Settings Tab Page LEL Alarm Levels This is the place where the user can specify the low alarm level and high alarm level for LEL sensor COMPUTER INTERFACE FOR MULTIRAE PLUS OXY Alarm Levels This is the place where the user can specify the low alarm level and high alarm level for OXY sensor VOC Alarm Levels ppm This is the place where the user can specify the STEL alarm level ppm TWA alarm level ppm low alarm level ppm and high alarm level ppm for VOC sensor Tox1 Alarm Levels ppm This is the place where the user can specify the STEL alarm level ppm TWA alarm level ppm low alarm level ppm and high alarm level ppm for Tox1 sensor Tox2 Alarm Levels ppm This is the place where the user can specify the STEL alarm level ppm TWA alarm level ppm low alarm level ppm and high alarm level ppm for Tox2 sensor Alarm mode If Auto reset is chosen the alarm will stop as soon as the alarm condition goes away The alarm will remain on if the Latched option is chosen To turn off a latched alarm press Y key to acknowledge the alarm condition Power On Zero This option allows the monitor to perform a fresh air calibration automatically when the monitor is turned on Care must be taken when using this mode to ensure that the monitor is in a fresh air environment when turned on COMPUTER INTERFACE FOR MULTIRAE PLUS Calibration spa
10. A Multi gas Monitor a battery charger rubber boot alkaline battery adapter water and dust filters plus calibration accessories 1 1 GENERAL INFORMATION 1 1 General Specifications Table 1 1 Multi Gas Monitor Specification Dimensions 4 65 L x 3 0 W x 1 9 H 11 8 cm x 7 6 cm x 4 8 cm Weight 16 oz 454 g with battery Detector Up to five sensors oxygen combustible two toxic and VOC Electrochemical sensors for toxic gases and oxygen photo ionization detector for ppm level VOCs and catalytic sensor for LEL level combustible gases Rechargeable 4 8V 1100 mAh Li ion or 4 8V 1700 mAh Ni Cd battery pack with built in charger 10 hours charge time or a 4 AA alkaline battery adapter Operating Time Up to 10 hours continuous operation Display 2 line 16 digit LCD with LED back light automatically in dim light Key pads 1 operation key and 2 programming keys Direct Readout Instantaneous values up to 5 sensor name high and low values for all detectors TWA and STEL values for toxic and VOCs battery voltage and elapsed time Continued GENERAL INFORMATION Multi Gas Monitor Specification Continued Alarm Settings Separate alarm limit settings for TWA STEL Low and High alarm Range Resolution and Response Time top diffusion CO 0 500 ppm 1 ppm 20 sec ES 0 100 ppm Ippm 30sec SO 0 20 ppm 0 1 ppm 15 sec NO 0 250 ppm I ppm 20 sec NO 0 20 ppm 0 1 ppm 25 sec CL 0 10 ppm 0 1
11. Evei HT a 0510 1999 TA fT 44b HT ah In ne EL HI Figure 5 10 Display Logged Data The data window is a two pane client window The left pane is a tree view which lists all the display format of each event and the right pane displays the information according to the display format and the event the user selected on the left pane To select any display format of any event the user can simply click the format item on the left pane To view the next event or the previous event the user can click the Next Event double right arrow or the Previous Event double left arrow toolbar buttons The user can also drag the splitter bar between the left pane and 5 26 COMPUTER INTERFACE FOR MULTIRAE PLUS the right pane to the left or to the right to enlarge a pane if that pane is not big enough To view the data points of a specific event the user can click the item representing that event under the item Data Text Mode For example click the item Event 1 on the left pane the right pane displays the data points of Event 1 as shown in Figure 5 10 COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 3 View STEL TWA AVG Value To view the STEL TWA or AVG value of any event click the event number item under the tree item STEL TWA AVG in the left pane the right pane displays the STEL TWA and AVG value of each data points of that event as shown in Figure 5 11 Piot Sute i imrg SOS dat MukiHAE FLGHSU SF glee sl Pies
12. Gas Parameters and Gas Selection To change a specific configuration setting click the corresponding tab page header to bring that tab page to the front then change the configuration setting on that tab page When finished editing the configuration settings click the OK button to close the Edit Configuration File dialog box The new values of the configuration settings will be reflected in the client window 5 11 COMPUTER INTERFACE FOR MULTIRAE PLUS Note The VOC gas configuration settings applies only to monitors which are equipped with PID detector option The General tab page which is shown in Figure 5 7 allows a user to change the general settings of the configuration data The following is the description of each field in the General tab page of the Edit Configuration File dialog ID This section sets the identification that is used throughout the datalog process Both editing fields Site and User can hold up to eight alphanumeric letters Security Level There are three levels of security They are used to provide protection against unauthorized changes to monitor settings which can be changed by using the programming menu of the MultiRAE PLUS monitor when the instrument is in the programming mode Level 0 allows a user to enter the programming menu without password checking but does not allow changes to alarm limits real time clock correction factor or user and site information etc The user can still perform
13. Table 2 2 Factory Calibration and Preset Alarm Limits no 27N pom 25 25 35 50 NO 5 Air ppm 1 j1 j 10 __ 20 9 N Vol 19 5 23 5 7 CH 50 Air_ LEL to 20 Note 100 ppm isobutylene gas is used for VOC gas calibration OPERATION OF MULTIRAE PLUS 2 8 Integrated Sampling Pump The MultiRAE PLUS Multi gas Monitor includes an integrated sampling pump This is a diaphragm pump providing about 300 cc per minute flow rate at the high setting with the standard filters in place A low pump speed of about 200 cc per minute is the factory default setting which will increase the battery life by about 5 and result in an increased LEL sensor lifetime see Chapter 4 or 5 for details of how to select the pump speed The high pump speed setting is required for vapors that are especially reactive or adsorb easily to instrument surfaces Such vapors include Cl PH3 NH3 HCN and semi volatile organic compounds like diesel fuel and jet fuels For such compounds it is helpful to remove the water trap filter for normal calibration and operation which will increase the pump speed to about 350 cc min It is also desirable to use inert connecting and sampling tubing such as Teflon instead of Tygon and to make connections as short as possible The pump is turned on automatically when the monitor is turned on and remains on during normal operation If liquid or other objects are sucked into the water trap
14. calibrations If Level 1 is selected a four digit password is required to enter the programming menu If Level 2 is selected the programming menu may be entered without restriction Any changes made in the programming menu can be saved 5 12 COMPUTER INTERFACE FOR MULTIRAE PLUS Password The four digit password must be entered if level 1 is selected as the security level or the monitor is in the Text mode Entry to the programming menu requires that this password be entered User mode In the Text mode the monitor only displays the sensor name and an OK message during normal operation In the Display mode the user can view several readings in the normal operation but cannot enter the programming menu In the Program mode the user can enter the programming mode to calibrate the monitor or change various setup in the monitor Warm up Time This option allows the user to choose the warm up time of the instrument in seconds Comfort Beep This option allows the user to specify a time interval that the buzzer will beep once to remind the user that the monitor is on If zero is entered for the time interval then the security beep feature is disabled COMPUTER INTERFACE FOR MULTIRAE PLUS Back Light This option allows the user to choose to turn on and off the LCD back light manually or automatically based on the ambient light sensor input If Manual mode is selected the user can also enter a time out period so that
15. reading display Note Do not connect to the parallel port of the PC by mistake The parallel port is usually a 25 pin female D connector on the back of the PC the serial port is usually a 25 or 9 pin male D connector If the serial port on the PC is a 25 pin connector the user needs to use a 25 pin to 9 pin adapter in order to accept the serial cable COMPUTER INTERFACE FOR MULTIRAE PLUS 5 3 Start ProRAE Suite Software To start the ProRAE Suite software click the Start button on the taskbar to display the Start menu click Programs gt ProRAE Suite gt ProRAE Suite sub menu item to start the ProRAE Suite software Figure 5 3 shows the main window of the ProRAE Suite software gt ProRAE Suite Eile Communication Option View Hi elp laja Sel Sale KE 2 Figure 5 3 ProRAE Suite Main Window The functions of ProRAE Suite software can be divided into three categories 1 Configuration data category This category includes editing the configuration data file sending the configuration data to the MultiRAE Plus monitor and receiving the configuration data from the MultiRAE Plus monitor etc 2 Logged data category This category includes receiving the logged data from the MultiRAE Plus monitor 5 5 COMPUTER INTERFACE FOR MULTIRAE PLUS displaying the logged data in different format exporting the logged data to a tab delimited text file so that it can be read by the Microsoft Excel software etc 3 Upg
16. 40 gases Scroll the list using the up or down arrow until the desired gas name is shown Press Enter key to select the gas The user can also enter a custom gas name up to 16 characters long and a custom correction factor LEL Current Gas selection This is the place where the user can choose a set of gases for correction factors of the LEL sensor The user can choose one gas from the Calibration Gas list box for calibration and another gas from the Measurement Gas list box for measurement Each list box contains a list of 20 to 40 gases Scroll the list using the up or down arrow until the desired gas name is shown Press Enter key to 5 19 COMPUTER INTERFACE FOR MULTIRAE PLUS select the gas The user can also enter a custom gas name up to 16 characters long and a custom correction factor In the Others tap the user can put in a power on customized name The name will be displayed when the unit is powered on The user can also choose the supporting of the printer option OK Cancel When the configuration changes are completed click on the OK button to save the configuration and return to the client window Click on Cancel button to abort the configuration changes COMPUTER INTERFACE FOR MULTIRAE PLUS 5 5 2 Send Configuration to MultiRAE Plus After the configuration data is loaded into the ProRAE Suite software the user can send the configuration settings to the MultiRAE PLUS monitor To send the configuration setting
17. 50 Low 20 20 20 20 19 Sep 8 00 0 6 0 7 0 2 2 2 8 01 5 6 2 4 2 5 8 02 0 7 0 8 0 8 03 56 39 5 5 8 04 0 6 3 8 3 9 8 05 8 6 0 8 1 8 8 06 2 4 0 0 5 8 07 8 3 0 7 0 9 8 08 0 9 0 9 0 9 8 09 10 5 0 2 0 7 8 10 0 0 7 1l 8 11 15 3 1 0 Sheet1 3 The first step of the ChartWizard will appear In the Range area the cells that were highlighted on the chart will be denoted ChartWizard Step 1 of 5 Press the Next button to continue 4 The next step will show the different chart types For this example the Line chart has been selected APPENDIX C ChartWizard Step 2 of 5 Column Line Doughnut ad xY Scatter 3 D Area C 3 D Line D Pi 3 D Surface Press the Next button to continue 5 Step 3 of the ChartWizard give additional choices for the line chart including data markers and gridlines In this example number 4 has been selected so there will be markers and gridlines ChartWizard Step 3 of 5 Press the Next button to continue 6 The next step shows a preview of the chart This will ensure that the correct columns were chosen in the C 5 APPENDIX C spreadsheet that comprise the chart Press the Next button to continue The final step is where the chart title and axis titles may be added After these are added in the spaces provided press the Finish button A sample of a
18. A previously selected sensor to be datalogged is marked with an next to the sensor name The cursor is blinking at the first sensor location Press Y key to enable the datalogging for the sensor and N key to disable the datalogging TOX1 VOC TOX2 CO VOC H S LEL pick OXY Press MODE key momentarily to move from one sensor location to the next one Repeat Step 2 until all the sensors which needs to be datalogged are selected Press and hold MODE key for 1 second to save the new sensor selection The display shows Save To confirm the new selection press the Y key to accept the change Press the N key or the MODE key to discard the change and return to the first datalog sub menu PROGRAMMING OF MULTIRAE 4 7 Change Monitor Setup In the programming mode users may change monitor setup or enter user information for the MultiRAE PLUS monitor Table 4 6 shows the sub menus for changing the monitor Table 4 6 Monitor Setup Sub Menu Change Site ID Change User ID Change Alarm Mode Change User Mode Change Real Time Clock Change Backlight Mode Change Password Change Pump Speed Change Averaging Method PROGRAMMING OF MULTIRAE 4 7 1 Change Site ID The user can enter an 8 digit alphanumeric site ID in the programming mode This site ID will be included in the datalog report 1 Change Site ID and Change User ID are the first and second sub menu item
19. Data 5 24 il 5 6 1 Receive Data from MultiRAE PLUS 5 25 5 6 2 View Logged Data in Text Mode 0se0se 5 26 5 6 3 View STEL TWA AVG Value eee 5 28 5 6 4 View Summary Information 5 29 5 6 5 View Logged Data in Graph Mode 5 30 5 6 6 Export the Displayed Data to a Text File 5 34 5 6 7 Export Graphic to a File sses 5 35 5 6 8 Print the Logged Data 5 36 5 7 Upgrade the Datalog Option ee eeeeeeee 5 37 5 8 Upgrade the Firmware 5 39 6 THEORY OF OPERATION scccsccscsssseesseeeees 6 1 7 MAINTENANCE issectisscchasessounsatbasstacsivsbstaanaasdsseatbeae 7 1 7 1 Battery Replacement sisi 7 2 7 2 Sensor R placements sind 7 4 7 3 PID Sensor Cleaning Replacement 00000 7 7 TA PID Lanny afenn annnars 7 9 7 5 Sampling Pump Replacement eeeee 7 11 8 TROUBLESHOOTING sssssenssssnsnsnssnnese 8 1 8 1 Special Diagnostic Mode ec eeeeeeeesteeeeeeees 8 2 8 2 Troubleshooting Table ee eeeeeeeseeeeeees 8 10 APPENDIX A QUICK REFERENCE GUIDE A 1 APPENDIX B CORRECTION FACTORS B 1 APPENDIX C MULTIRAE PLUS DATA CONVERSION TO MICROSOFT EXCEL C 1 APPENDIX D RAE SYSTEMS TECHNICAL NOTES wisdisevscucuvesdeseuscsaussbetstacavensad racsideutavestessateecoatae D 1 APPENDIX E RAE SYSTEMS APPLICATION NOTES nine E 1 APPENDIX F LITERATURE REQUEST F 1 APPENDIX G REQUEST FOR RETURN AUTHORIZATION FORM
20. TL eI f Kin Date Talia Been 29 of 101 UE TWA Data Value Event i a GL EE a7G Date Falus Figure 5 12 Summary Information of the Logged Data COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 5 View Logged Data in Graph Mode To view the logged data of a specific event in graph mode click the event item under the tree item Graph Mode in the left pane and the right pane displays the graph of that event as shown in Figure 5 13 PeoklAE Guis T epareg WAI ds L H amp BASE PRHE ajala sel Le le 2 Eveni FI a 05 10 14 Event 12 a LS Everi E3 a 05 1013 Concentration Br STELT ENG fs s Event M a GAO BS TEE Er es Been 22 of 1014380 Briti Biriket Erir L Evert ELANET Date Time 1999 Figure 5 13 Graph of the Logged Data Select graph type The user can choose the type of sensor data in the Graph Type tab page of the Graph Settings dialog box To display the Graph Settings dialog box click any place in the right pane so that pane has the focus then click Option gt Graph Settings menu item to display the Graph Settings dialog box Figure 5 14 shows the Graph Type tab page of the Graph Settings dialog box Here the user can choose which sensor data to be shown on the graph COMPUTER INTERFACE FOR MULTIRAE PLUS whether to show a grid on the right pane and the title of the graph Graph Settings Figure 5 14 Graph Type Tab Page Select graph range The user can choose the value range on the x axis an
21. User ID i N Change Alarm Mode Change User Mode Change Real Time Clock N Change Backlight Mode Change Password Mode Change Pump Speed Change Averaging Method Change Sensor Configuration Change LEL VOC Gas Selection Enable Disable Sensor j N Change Dilution Ratio Change PID Lamp Type A 2 APPENDIX B APPENDIX B CORRECTION FACTORS A partial list of correction factors for a number of commonly used compounds for the LEL sensor 10 6 eV and 11 7 eV PID sensors is as follows refer to TN 106 and TN 156 at www raesystems com for complete lists of correction factors Table B 1 Correction Factors for PID amp LEL Sensors Acetaldehyde Acetic acid Acetone Acrylic acid 12 2 0 Acrylonitrile Allyl alcohol Ammonia 0 79 Benzene 0 53 06 2 1 Butadiene 0 85 25 Butane n 67 2 0 Butyl acetate n 26 Butyl acrylate n 1 6 06 Carbon disulfide 1 2 4 Carbon monoxide 1 2 Chlorine Cyclohexane 2 5 Cyclohexanone 09 0 7 Dichloroethane 1 2 NR 06 Dichloroethene t 1 2 Dichloromethane NR 0 9 1 0 APPENDIX B Compound Diesel Fuel Diethylamine Dimethylhydrazine 1 1 Epichlorohydrin Ethanol Ethene Ethyl acetate Ethyl acrylate Ethyl benzene Ethyl ether Ethyl hexyl acrylate 2 Ethyl sulfide Gasoline vapors Gasoline whole Heptane n Hexamethyldisilazane Hexane n Hydrazine Hydrogen Hydrogen sulfide Isobutan
22. VOC H S LEL pick OXY 3 Press MODE key momentarily to move from one sensor location to the next one Repeat Step 2 until all the sensors which needs to be enabled are selected Press and hold MODE key for 1 second to save the new sensor selection 4 The display shows Save To confirm the new selection press the Y key to accept the change Press the N key or the MODE key to discard the change and move to the next sub menu PROGRAMMING OF MULTIRAE 4 8 3 Change Dilution Ratio The user can insert an optional dilution fitting on the MultiRAE PLUS gas inlet port to dilute the gas sample The user can enter a dilution ratio from 1 to 10 from the programming menu so that the reading can be compensated to show the actual concentration of the gas sample with the dilution fitting 1 Change Dilution Ratio is the third sub menu item in Table 4 7 Press the Y key the display shows the current dilution ratio Dilution Ratio xx with the left most digit flashing Press the Y or N key to increase or decrease the value of the digit Press MODE key momentarily to advance to the next digit The flashing digit will move to the next digit to the right Repeat this process until both digits of the new dilution ratio are entered Press and hold the MODE key for 1 second to exit the data entry mode and move to the next sub menu If there is any change to the existing dilutio
23. Wizard Dialog Box C 2 APPENDIX C 4 Click Finish button the dialog box disappears and the event data is loaded into the MS Excel software as shown in Figure C 4 X Microsoft Excel TextE vent_txt Serial Number 001234 Site ID 00000012 E Data Type Avg ple Period 60 sec e 09 05 1996 18 00 Gas Type High Alarm Levels Low Alarm Levels 9 19 96 8 00 9 19 96 8 01 9 19 96 8 02 9 19 96 8 03 9 19 96 8 04 9 19 96 8 05 Figure C 4 File Text Event txt is Open 5 Click File gt Save As menu item to save the loaded event data to a MS Excel file Ensure that in the Save As dialog box the Save as type is Microsoft Excel Workbook Graphing MultiRAE PLUS Data in Excel 1 Open the Excel data file that contains the data to be graphed by selecting File and then Open Highlight the columns that contain the data points Make sure that the header information is not highlighted 2 Go to the Insert menu and under chart elect As New Sheet APPENDIX C X Microsoft Excel demo xls Pal 100 Zoom Control Arial 10 HI FT D7 0 6 S N 001 234 User ID ABCO0000Period s ec 60 Cal 9 05 1 8 00 Year 19 96 Site ID 12 Data Poi_ nts 347 Data TypejAvg Date Time Limit CO pp m VOC pp H2S ppm LEL High 50 50 50
24. are e Battery pack e Sensor modules e PID lamp e Sampling pump Figure 7 1 Main Components of MultiRAE PLUS 7 1 MAINTENANCE 7 1 Battery Replacement When the display shows a flashing message Bat the battery requires recharging The battery may be replaced in the field in area known to be non hazardous if required It is recommended to recharge the MultiRAE PLUS monitor upon returning from field work A fully charged battery powers a MultiRAE PLUS monitor for 10 hours continuous operation The charging time is less than 10 hours for a fully discharged battery The built in charging circuit is controlled by two step constant voltage constant current charging to prevent over charging WARNING To reduce the risk of ignition of hazardous atmospheres recharge battery only in area known to be non hazardous Remove and replace battery only in area known to be non hazardous 7 2 MAINTENANCE Replacing and Recharging Battery Pack Turn off power of the MultiRAE PLUS Refer to Figure 7 1 unscrew the two captured case screws from the bottom of the monitor case and remove the MultiRAE PLUS cover Unplug the battery from the battery jack which is connected to the PC board of the MultiRAE PLUS Connect the battery pack to the DC jack on an external charging station optional for charging Replace a fully charged spare battery pack in the MultiRAE PLUS Ensure the battery plug
25. automatically Charging Battery 5 6V 3 The LED should be red in color when charging If the battery is fully charged the LED will change from red to green The red color indicates that the battery is being charged The green color indicates that the battery is fully charged The display will also indicate Fully charged A completely discharged MultiRAE PLUS monitor will be charged to full capacity within 10 hours OPERATION OF ACCESSORIES NOTE 1 The latest version of the MultiRAE PLUS monitor has a smart charging circuitry and algorithm to prevent overcharging removing the charger is not necessary NOTE 2 After one charging cycle the monitor recognizes whether Li ion or NiCd batteries are installed When NiCd batteries are present the firmware displays Deep Discharge when the AC adapter is connected Perform occasional deep discharge to the NiCd battery to maintain full capacity by pressing the Y key when this message appears The battery will begin deep discharge followed by a charge cycle The deep discharge is useful to remove memory effects of the NiCd battery so that the charge capacity is maintained The battery of the MultiRAE PLUS monitor will be drained slowly even if the monitor is turned off If the monitor has not been charged for 5 7 days the battery voltage will be low The factory supplied battery is designed to last for 10 hours of normal operation no alarm no back light condition for a new bat
26. failure message i e Lamp is displayed the lamp failure level may be set too high This level can be adjusted by using the following steps 1 2 3 4 Turn the monitor off Remove the UV lamp of the PID sensor then replace the sensor and cover Turn on the monitor in the special diagnostic mode Press the MODE key until Lamp xxx Fail yyy is display The reading xxx is the lamp current reading when the lamp is off The value yyy is the threshold value which determines when does the lamp fail Push the Y or N key to increase or decrease the threshold value yyy until it is about 10 counts above the xxx value This will optimally set the lamp failure threshold Press MODE key to exit this display If the threshold value is changed a message Save new lamp threshold will appear Press Y to confirm the change N or MODE key to abandon the changes Turn the monitor off and replace the lamp Turn on the monitor in diagnostic mode again and press the MODE key until Lamp xxx Fail yyy is display This time the reading xxx is the lamp current reading when the lamp is on and it should be higher than the threshold value yyy by at least 15 20 8 5 TROUBLESHOOTING counts If not the lamp may be defective or very weak In most cases lamp failure threshold adjust is not required in which case the user should press MODE key to e
27. flashing digit will move on to the next digit to its right Repeat this process until all the new Alarm limits are entered Press and hold the MODE key for 1 second to exit data entry mode If there is any change to the existing value the display shows Save Press the Y key to accept the new value and move to the next sub menu Press the N key to discard the changes To preserve the previously stored alarm limit press and hold the MODE key for 1 second and the monitor will exit data entry mode and move to the next sub menu PROGRAMMING OF MULTIRAE 4 6 View or Change Datalog MultiRAE monitor calculates and stores the gas readings at a specified interval The user can review these stored readings or change datalog setup from the programming mode Users can also program additional datalog options in PC and down loaded them to the monitor see Section 5 0 for details on how to program additional datalogging options Table 4 5 shows the sub menus for datalog options Table 4 5 Datalog Sub Menu Reset Peak and Minimum Clear All Data Change Datalog Period Select Data Type View Datalog Enable Disable Datalog PROGRAMMING OF MULTIRAE 4 6 1 Reset Peak and Minimum This function will reset peak and minimum data stored in the non volatile data memory 1 Reset Peak and Minimum is the first sub menu item in Table 4 5 2 Press the Y key to clear the peak and minimum data memory Display sho
28. in the inlet port and cause the pump to stall the electronics of the monitor will detect the obstruction and shut down the pump immediately The alarm will be activated and a 2 22 OPERATION OF MULTIRAE PLUS flashing error message Pump will be also displayed in the LCD display The user needs to acknowledge the pump shut off condition by pressing the Y key to re start the pump Different pump shut off thresholds are desired for the two pump settings this value can be adjusted in the Special Diagnostic Mode as described in Section 8 1 OPERATION OF MULTIRAE PLUS 2 9 Datalogging The MultiRAE PLUS Multi gas Monitor calculates and stores the gas readings based on a user specified datalogging period and the type of measurement Two types of gas measurements average or peak concentration can be stored for each sensor during each datalogging interval The datalogging interval can be programmed from one second to 60 minutes in one second increments In addition time stamp user ID site ID serial number last calibration date and alarm limits are also stored All data is retained in a non volatile memory so that it can be down loaded at a later time to a PC Datalog Options There are four ways to initiate the datalog operation Automatic Start and stop datalogging automatically when the monitor is turned on and off Manual Start and stop datalogging by pressing a key manually There is a timer available to setup th
29. in Table 4 6 Press MODE key to choose one of them and press the Y key the display shows the current site ID Site ID xxxxxxxx or the current user ID User ID xxxxxxxx With the left most digit flashing Press the Y or N key to cycle through all 26 letters and 10 numerals Press MODE key momentarily to advance to the next digit The flashing digit will move to the next digit to the right Repeat this process until all 8 digits of the new site ID are entered Press and hold the MODE key for 1 second to exit the data entry mode and move to the next monitor setup sub menu If there is any change to the existing site ID the display shows Save Press the Y key to accept the new site ID and exit the monitor setup sub menu Press the N key to discard the changes and move to the next sub menu PROGRAMMING OF MULTIRAE 4 7 2 Change Alarm Mode There are two different alarm modes latched and automatic reset in MultiRAE PLUS that can be selected from the programming menu l Change Alarm Mode is the third sub menu item in Table 4 6 Press the Y key the display shows the current alarm mode selection Alarm Mode Latched Press the Y key to accept the currently displayed alarm mode Press N key to change to the other alarm mode Alarm Mode Auto Reset Press MODE key to exit this sub menu and move to the next monitor setup sub menu
30. is securely connected to the MultiRAE PLUS Close the MultiRAE PLUS cover and tighten the screws Replacing Alkaline Battery Adapter 1 Insert four fresh AA size alkaline batteries into the alkaline battery adapter Make sure that the polarity of the battery is correct Follow the same procedure as described above to replace the battery adapter Note The internal charging circuit is designed to prevent charging to alkaline batteries when alkaline batteries are installed inside the monitor 7 3 MAINTENANCE 7 2 Sensor Replacement The toxic combustible and oxygen sensors all have limited expected operating lives Under normal operating condition most sensors will lose their original sensitivity after the expected operating life and will need to be replaced Each sensor module in MultiRAE PLUS includes a non volatile memory which records the manufacturing date of the sensor In the diagnostic mode the microprocessor will check the date code and display the expiration date of each sensor It is suggested that the user should replace the sensor when the current date exceeds the expiration date of a sensor Sensor Replacement Procedure The oxygen and combustible sensor each has their unique sensor sockets in the MultiRAE PLUS monitor The two toxic sensor sockets in the MultiRAE PLUS monitor allow users to plug in any two sensors selected from the series of toxic sensors offered by RAE Systems Inc 1 T
31. loading process After the firmware loading is finished a message box will appear on the screen to let the user know that the firmware is successfully loaded into the instrument COMPUTER INTERFACE FOR MULTIRAE PLUS Lx Bresse EE a MiniRAE2000_ 105 a07 fe VR4E 7840 109 07 MiniR amp E 2000 106 207 fa VRAE7800_ 109 a07 MultiR amp E_216 a07 Firmware files a07 Figure 5 18 Open Firmware File Dialog Box Note In order to upgrade the firmware the MultiRAE PLUS monitor must have a 2 04 or later version of the firmware Call the factory s Customer Service Department if the existing firmware version is older than 2 04 for instruction on how to upgrade the firmware THEORY OF OPERATION 6 THEORY OF OPERATION The MultiRAE PLUS monitor uses one to five different sensors to measure a variety of gases A newly developed electrodeless discharge UV lamp is used as the high energy photon source for the PID sensor see Figure 6 1 The patented PID sensor will detect a broad range of organic vapors Up to two electrochemical toxic gas sensors can be installed in the monitor to measure inorganic toxic gases Many different types of toxic sensors are offered They can be plugged into these two sensor sockets and are interchangeable A catalytic bead sensor is used to measure combustible gases An electrochemical sensor is used to measure oxygen Light OL sensor Figure 6 1 Block Diagram of Mu
32. minutes the real time clock will be lost In this case users need to enter the real time clock information again as described in Section 4 OPERATION OF MULTIRAE PLUS Datalog versus Non Datalog monitor There are two versions of the PGM 50 Multi gas Monitors Datalog monitors and Non Datalog monitors During power on sequence a letter D following the version number indicates that the monitor is configured as a Datalog monitor Without the letter D it is a Non Datalog monitor Users can upgrade a Non Datalog monitor to a Datalog monitor Call the factory for information on how to order the upgrade kit and follow the instructions described in Section 5 7 to enable or disable the datalog feature for the monitor OPERATION OF MULTIRAE PLUS 2 4 Operation The MultiRAE PLUS Multi gas Monitor offers three different user modes of operation Text mode Display mode and Programming mode default mode setting The text mode is the simplest mode of operation The monitor will display the sensor name after the monitor is turned on The user can press the MODE key to see the instantaneous gas concentration reading battery voltage or enter the PC communication menu The user can get into the calibration mode from text mode to do calibrations but cannot change most of the parameters In the display mode the MultiRAE PLUS Multi gas Monitor is able to display all the information in the text mode In addition the foll
33. ten x10 amplifier If the increase does not agree with expected value then the gain switch of the amplifier may be defective 6 Adjust LCD Contrast This display allows the user to adjust the LCD contrast Press Y to increase the contrast and N key to decrease the contrast The bar graph shows the current LCD contrast setting If the display appears having dark lines press Y key several times should see a more clear display 7 Check LEL Power ON OFF This display shows the present condition of the LEL sensor power and raw reading The top display shows the instantaneous reading of raw counts from the LEL sensor The bottom line shows if the LEL sensor is powered By pressing N key the power can be turned off The Y key turns powers to the LEL on 8 Show Clock Battery and Temperature This display shows the real time clock battery voltage in raw count and temperature sensor reading 9 Sensor Expiration Date This display shows the expiration date month and year of all the installed sensors in the MultiRAE PLUS monitor The expiration date is calculated based on the manufacturing date and expected life of each sensor which were stored inside each sensor when it was fabricated in the factory If the current date exceeds the expiration date 8 7 TROUBLESHOOTING of any sensor the performance of the given sensor can no longer be guaranteed It is strongly recommended that the user replace the sensor imme
34. the LCD displays the message Monitor will pause OK to remind the users that during PC communication there will be no real time monitoring of the gas concentration Press Y to proceed and the monitor enters the communication standby mode The LCD then displays Ready Connect the monitor to the serial port of a PC The monitor is then ready to receive any command from a PC see Section 5 for details on communications between the MultiRAE PLUS and a PC Note When the monitor is in communication standby mode it stops monitoring the gas concentration and stops the datalogging Datalogging must be manually restarted when exiting the communication standby mode unless it is in automatic datalogging mode Displays in text mode The four displays are arranged in a round robin order OPERATION OF MULTIRAE PLUS Displays in display or program mode The twelve displays are arranged in a round robin order Sensor name Instantaneous Reading Print Reading LEL VOC gas Start stop datalog TWA value Run time clock Battery voltage To choose a specific display press the MODE key one or more times until the desired display appears Display time out In all displays the LCD will automatically return to the instantaneous reading in display or program mode or sensor name in text mode after a one minute time out interval if no key is pressed OPERATION OF MULTIRAE PLUS 2
35. the ProRAE Suite will scale the range of X axis by itself to cover the every data points on x axis COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 6 Export the Displayed Data to a Text File The ProRAE Suite software allows the user to export the displayed text to a tab delimited text file so that it can be read by Microsoft Excel directly To export the text displayed in the right pane to a tab delimited text file click Option gt Export Text menu item a Save As dialog box is displayed Specify the file name in the File name field then click the OK button to close the Save As dialog box A new file is created that can be read by Microsoft Excel directly Appendix C shows a detailed step by step instruction on how to export data as text file and use Microsoft Excel to open the text file COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 7 Export Graphics to a File The ProRAE Suite software allows the user to export the displayed graph to a windows bitmap bmp file or a windows metafile wmf file To export the displayed graph in the right pane to a windows bitmap or metafile file first click any place in the right pane to make sure that the graph pane has the focus then click Option gt Export Graph menu item to display a Save As dialog box Select the export graph file type bmp or wmf in the Save as type field then specify the export file name in the File name field Click OK button to close the Save As dialog box The newly crea
36. the back light will be turned off automatically after the time out period If Auto is selected the ambient light sensor will automatically turn on and off the backlight Clock from PC This option allows the PC clock to be downloaded to the MultiRAE PLUS monitor so that the user does not need to manually set the clock in the MultiRAE PLUS monitor Pump Speed This option allows the user to choose the high pump speed or low pump speed for the MultiRAE PLUS monitor Measure The user can choose to record the average or peak Max reading of all the sensors during each datalog period Datalog Interval The datalog interval is the rate at which datalog samples are recorded while the datalog is running The unit of datalog interval is second The datalog interval determines how often a new sample is calculated and stored to the datalog The unit of a datalog interval is one second COMPUTER INTERFACE FOR MULTIRAE PLUS Datalog Selection The user can choose one or more sensors for datalogging purpose This does not activate or inactivate the particular sensor s readings except for the purpose of datalogging recording Datalog Mode This may be set to either of four choices With Automatic start stop the datalogging begins when the monitor is turned on and ends when it is turned off With Manual start stop the datalog can begin by a series of key presses in the menu of normal operation The maximum run time determines
37. the instrument ID serial number and the datalog option in the MultiRAE monitor To configure all the settings in the instrument click the Option gt Config All menu item and a message box will appear to remind the user to connect the instrument to the PC through the serial port After making sure that the instrument is connected to the PC click the OK button Another message box will appear to warn the user that this operation will erase all the current configuration settings in the monitor If the user does not want this to happen click the Cancel button otherwise click the OK button to start the data transfer After the information is sent successfully a message box will appear to indicate that the sending configuration process is completed Click the OK button to close the message box Warning The Config All option is mainly used to restore the MultiRAE monitor s default operational settings when the configuration of the unit is non recoverable and the unit is malfunctioning Because the default parameters are not normally fit a specific unit a user will need to re calibration re setup lamp pump and LCD contrast threshold etc Try not to use this function if possible COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 Processing the Logged Data The ProRAE Suite software allows the user to retrieve the logged data from the MultiRAE PLUS monitor and display the data in many different formats The user can also export the displaye
38. 5 Alarm Signals The built in microcomputer updates the gas concentrations every second and compares them with the programmed alarm limits TWA STEL and two instantaneous gas concentration alarm limit settings Low amp High Whenever the concentration exceeds the sensors preset limits the loud buzzer and red flashing LED are activated immediately to warn the user of the alarm condition In addition the MultiRAE PLUS will alarm if one of the following conditions occurs battery voltage falls below a pre set level 4 4 V failure of the UV lamp LEL sensor off pump stall or when the datalog memory is full When the low battery alarm occurs there will be approximately 20 30 minutes of operating time remaining When the battery voltage falls below 4 2 V the monitor will be turned off automatically Alarm Signal Disabled It is extremely important to note that during the following conditions the alarm signals are disabled 1 In PC communication standby mode 2 In calibration mode including reviewing datalog data During these modes of operation real time monitoring of the gas concentration stops None of the gas concentrations will be calculated including Peak STEL and TWA OPERATION OF MULTIRAE PLUS Alarm Signal Latching It is possible to setup the MultiRAE PLUS from a PC or in programming mode so that when an alarm condition occurs the alarm signals stay on even after the alarm condition is no longer present T
39. If there is any change to the existing selection pressing the y key the display will show Save Then press the Y key to accept or the N key to discard and move to the next sub menu PROGRAMMING OF MULTIRAE 4 7 3 Change User Mode There are three different user modes text display and programming in MultiRAE PLUS that can be selected from the programming menu 1 Change User Mode is the fourth sub menu item in Table 4 6 2 Press the Y key the display shows the current user mode selection User Mode Program 3 Press the Y key to accept the currently displayed user mode Press N key to scroll through the other two user modes Press MODE key to exit this sub menu and move to the next monitor setup sub menu 4 If there is any change to the existing selection pressing the y key the display will show Disable Program Are you Sure Then press the Y key to accept or the N key to discard and move to the next sub menu NOTE If the user mode is changed to display or text mode the user can no longer enter the programming menu Therefore the user cannot change the user mode back to program mode from the monitor The only way to change the user mode back to program mode is to use a PC and the ProRAE Suite program or multicfg program see Section 5 for details PROGRAMMING OF MULTIRAE 4 7 4 Change Real Time Clock The MultiRAE monitor is equipped with
40. Menu Turn on the MultiRAE PLUS monitor refer to Section 2 3 for the power on sequence Press and hold down both MODE and N keys for three seconds to enter programming mode Note This is to prevent a user from entering the programming mode by accident If the security level is O or 2 after holding down two keys for 3 seconds the monitor should enter the programming mode and the first menu item Calibrate Monitor will be displayed If the security level is 1 or user mode is text mode after holding down the two keys for three seconds the display will show Enter Password 0000 with the left most digit flashing The user should enter a password starting from this flashing digit Note 1 Prior to factory shipment the MultiRAE PLUS monitor was installed with 0000 as the default password Note 2 For added security 0000 is always displayed instead of the actual password at this step PROGRAMMING OF MULTIRAE If the correct digit value is not 0 use the Y key or N key to increase or decrease the digit value Then press MODE key momentarily to confirm the digit value Display shows the actual digit entered and moves the flashing cursor to the next digit to the right Repeat Step 5 until all four digits are entered Press and hold MODE for one second If the entered password is correct the monitor enters the programming menu The first menu item Calibrate
41. Monitor will be displayed If the password is incorrect the display shows Wrong Password and returns to the regular display of instantaneous gas readings If the User mode is set to display mode a message Display Only Cannot enter will be shown PROGRAMMING OF MULTIRAE 4 4 Calibration of MultiRAE PLUS Monitor CALIBRATION WARNINGS The calibration of all newly purchased RAE Systems instruments should be tested by exposing the sensor s to known concentration calibration gas before the instrument is used or put into service For maximum safety the accuracy of the MultiRAE PLUS should be checked by exposing the sensor s to known concentration calibration gas before each day s use In programming mode the user may re calibrate the sensors in the MultiRAE PLUS monitor This is a two point calibration process using fresh air and the standard reference gas First a fresh air which contains 20 9 oxygen and no detectable VOC toxic or combustible gases is used to set the zero point for each sensor Then a standard reference gas which contains a known concentration of a given gas is used to set the second point of reference also known as span gas The two point calibration procedure is detailed below Table 4 3 shows the sub menus for calibration operations PROGRAMMING OF MULTIRAE Table 4 3 Calibration Sub Menu Fresh Air Calibration Multiple Sensor Calibration
42. MultiRAE PLUS MULTI GAS MONITOR PGM 50 OPERATION AND MAINTENANCE MANUAL Document No 008 4001 Rev G 1 CE RAE SYSTEMS INC 1339 Moffett Park Drive Sunnyvale CA 94089 February 2002 SS E ISO 9001 Table of Contents 1 GENERAL INFORMATION ssssmssssssssnse 1 1 1 1 General Speciicalions assaut 1 2 2 OPERATION OF MULTIRAE PLUS ss 2 1 2 1 Physical Description ss ataetestitn 2 2 2227 Keys and Display AA Sn darei 2 4 23 Powet Oil OM brasse 2 7 24 Operations are den nacre 2 10 297 Alarm STOMA S a5 esses nacre 2 17 2 6 Back bishti oracin eae erai 2 20 2 7 Preset Alarm Limits and Calibration 2 21 2 8 Integrated Sampling Pump 2 22 2 9 AIO DITES nant 2 24 3 OPERATION OF ACCESSORIES ss 3 1 3 1 Battery Charging Operation 3 2 3 2 Alkaline Battery Adapter 3 4 3 3 Water Trap FO ds neveu 3 5 3 4 Remote Sampling Probe or Tygon Tubing 3 6 3 5 Dilution EHESS emcees tement 3 7 3 6 Calibration Adapter serment 3 8 4 PROGRAMMING OF MULTIRAE PLUB 4 1 4 1 Programming Mode 4 2 4 2 Keys for Programming Mode 4 4 4 3 Entering into Programming Menu 4 5 4 4 Calibration of MultiRAE PLUS Monitor 4 7 4 4 1 Fresh Air Calibration 4 10 44 2 Multiple Sensor Calibration eee 4 11 44 3 Single Sensor Calibration eeeeeeeeeeeees 4 14 4 4 4 Modify Span Gas Value 4 17 44 5 Change LEL VOC Sp
43. RAE PLUS The MultiRAE PLUS Monitor gives real time measurements and activates alarm signals whenever the exposure exceeds preset limits on any of the five possible sensors Prior to factory shipment the MultiRAE PLUS is pre set with default alarm limits and the sensors are pre calibrated with standard calibration gas However the user should calibrate the instrument before the first use After the monitor is fully charged and calibrated it is ready for immediate operation OPERATION OF MULTIRAE PLUS 2 1 Physical Description Figure 2 1 shows the main components of the MultiRAE PLUS Multi gas Monitor which include Buzzer amp Gas Outlet Gas Inlet and Filter Charge Contact Serial Port for PC Communication Wrist Strap LED Alarm Programming Keys Figure 2 1 Major parts of the MultiRAE PLUS Multi gas Monitor 3 keys for the user to interact with the monitor 1 operation key and 2 programming keys for normal operation or programming of the monitor LCD display with back light to show real time and calculated measurements 2 2 OPERATION OF MULTIRAE PLUS Buzzer and red LED for alarm signal whenever the exposures exceed preset limits and for error conditions Wrist strap Charge contact for plugging directly to the charging station Gas entry port Serial communication port for PC interface OPERATION OF MULTIRAE PLUS 2 2 Keys and Display Figure 2 2 shows the LCD display and th
44. a real time clock The user can enter the correct date and time into the real time clock in the programming mode 1 The fifth sub menu item in Table 4 6 is Change Real Time Clock Press Y key the display shows both the current date and time Date mm dd and Time hh mm with the left most digit of the date flashing 3 To modify this value use the Y or N key to change the digit value and press the MODE key momentarily to advance to the next digit The flashing digit will move on to next digit to its right Repeat this process until the new date and time values are entered Press and hold the MODE key for 1 second to exit data entry mode If there is any change to the existing value the display shows Save Press the Y key to accept the new value and move to next sub menu Press the N key to discard the changes and move to next sub menu PROGRAMMING OF MULTIRAE 4 7 5 Change Back Light Mode The MultiRAE monitor allows a user to choose to turn on and off LCD back light automatically when ambient light falls bellow or above a threshold level or to turn on and off the back light manually by pressing the N key 1 The sixth sub menu item in Table 4 6 is Change Backlight Mode 2 Press Y key the display shows the current back light mode Back Light Mode manual turn on 3 Press the Y key to accept the currently displayed back light mode Press N ke
45. alibration are selected Press and hold the MODE key for 1 second to save the new sensor selection 8 The display shows Save To confirm the new selection press the Y key to accept the change and continue on with Step 2 Press the N key or the MODE key to discard the change and to continue on with Step 2 Cross Sensitivity Some sensors may show cross sensitivity to other gases Therefore it is important to choose the gas mixture carefully for the multiple sensor calibration to avoid erroneous calibration due to cross sensitivity For example some VOC gases are known to cause erroneous readings by the CO sensor In general it is recommended to calibrate the two toxic sensors combustible and oxygen sensor with a bottle of mixed gas using the multiple sensor calibration procedure and to calibrate the PID sensor with a bottle of a single VOC gas PROGRAMMING OF MULTIRAE 4 4 3 Single Sensor Calibration This procedure determines the second point of the sensor calibration curve for a single sensor A standard reference gas span gas is needed to perform this procedure Table 2 2 shows the standard calibration gas which is typically used as the span gas in the factory connect the tube to the sampling bag filled with the standard gas as shown in Figure 4 1 1 2 Continuing from Step 4 or Step 6 of the previous section the display should show Single Sensor Calibration Press Y key The display shows
46. all the installed sensors in the monitor with the cursor blinking at the first sensor location Press Y key to select the high lighted sensor and start the calibration or press MODE key momentarily to move to the next sensor location TOX1 VO co VOC HS LEL pick OXY LEL OXY TOX2 Turn on the valve of the CO gas bottle to start the flow of the span gas Display shows Apply CO Gas and will wait for the calibration gas to reach the sensor When the calibration gas has reached the sensor the display will show calibration in progress 60 with the countdown timer shows the number of remaining PROGRAMMING OF MULTIRAE seconds while the monitor performs calibration When the countdown timer reaches 0 the display shows the sensor name and the calibrated value CO cal ed reading 50 ppm If no gas has reached the sensor after 60 seconds the display will show No gas flow and abort the calibration Note The reading should be very close to the span gas value After about 5 seconds pause the display will show the message Span Cal Done Turn Off Gas This completes the single gas calibration procedure for one sensor The display shows the single gas calibration sub menu for a user to select another sensor or move to next calibration sub menu Turn off the flow of gas Disconnect the calibration adapter from the MultiRAE PLUS Monitor Repeat Step 1 to Step 5 to calibrate the next sensor
47. an Gas 4 18 4 5 Change Alarm Limits eeesceesneeeeeteeees 4 20 4 6 View or Change Datalog eeeeeceeeeeeeeeteees 4 22 4 6 1 Reset Peak and Minimum 4 23 4 6 2 Clear All Data 4 24 4 6 3 Change Datalog Period 4 25 AOA Select Data EDEN es EE 4 26 AGO VNIEWDalO entends 4 27 4 6 6 Enable Disable Datalog eee 4 28 4 7 Change Monitor Setup c eeeceeceeseeeeenteeees 4 29 ATA Change Site Deen mn re 4 30 72 Change Alarm Mode 558 ua sde 4 31 47 3 Change User Mode ses 4 32 4 7 4 Change Real Time Clock 4 33 4 7 55 Change Back Light Mode 4 34 LRO Change Pass word 2 5 SSSR 4 35 47 7 _ Change Pump Speeds sense 4 36 4 7 8 Change Averaging Method 4 37 4 8 Change Sensor Configuration eee 4 38 4 8 1 Change LEL VOC Gas Selection 000000 4 40 4 8 2 Enable Disable Sensor 4 44 4 8 3 Change Dilution Ratio 4 45 4 8 4 Change PID Lamp Type eee eeeeeeeteeees 4 46 4 9 Exit Programming Mode 4 47 COMPUTER INTERFACE FOR MULTIRAE PLUS ssseessesseeee 5 1 5 1 Install ProRAE Suite Software ceeeeeeee 5 2 5 2 Connect MultiRAE PLUS to PC 5 4 5 3 Start ProRAE Suite Software 5 5 5 4 Setup Communication Port 5 7 5 5 Processing the Configuration Data 5 8 5 5 1 Editing the Configuration Data 5 9 5 5 2 Send Configuration to MultiRAE Plus 5 21 5 5 3 Saving Configuration Data 5 22 5 5 4 Configuring All Settings 5 23 5 6 Processing the Logged
48. an automatic end to the datalog or it can be stopped manually If Periodic start stop or daily mode is chosen the user must specify the start and stop hour and minute The interval between start and stop is the period of time the monitor will datalog at data logging period rate With Scheduled start stop all the entry boxes for year month day hour and minute for both start and stop time must be entered to specify when the datalog is to occur Run Time If manual start stop mode for datalogging is chosen the user needs to specify a maximum run time After the monitor has been on for the specified run time datalogging will be turned off automatically Start Time and Stop Time If scheduled start stop mode is chosen for datalogging all entry boxes must be completed for start and stop year month day hour and minute The monitor must already be 5 15 COMPUTER INTERFACE FOR MULTIRAE PLUS turned on Then once the start date time is reached the monitor will start datalogging When the stop date time is reached the datalogging will stop automatically With periodic start stop mode the hours and minutes are used for the data log period to be run each day Figure 5 8 shows the Gas Parameters tab page which allows the user to change the gas parameters of the configuration data The following is the description of each field in the Gas Parameters tab page of the Edit Configuration File dialog See Selec Dies
49. and N keys for 3 seconds as described in Section 4 4 COMPUTER INTERFACE FOR MULTIRAE PLUS 5 COMPUTER INTERFACE FOR MULTIRAE PLUS Each MultiRAE PLUS with a datalogging option is shipped with a software package called ProRAE Suite and a serial computer interface cable This software package runs on any IBM compatible Personal Computer PC under Windows 95 Windows 98 Windows NT 4 0 and later environments It allows the user to configure the MultiRAE PLUS through a user friendly interface and send the configuration information from the PC to the MultiRAE PLUS monitor Collected data can also be extracted from the MultiRAE PLUS to the PC in order to perform data analysis report generation or record keeping Installation and operation of this software package is described in the following sections COMPUTER INTERFACE FOR MULTIRAE PLUS 5 1 Install ProRAE Suite Software ProRAE Suite software package is supplied with the MultiRAE PLUS datalogging monitor This software package is available on two 3 5 setup diskettes To install the ProRAE Suite software insert the first setup diskette into the A or B floppy disk drive Click the Start button on the taskbar to display the start menu then click the Run from the start menu to display the Run dialog box If the setup diskette is in disk drive A type A Setup exe in the Open field as shown in Figure 5 1 Figure 5 1 Run Dialog Box Press the Enter k
50. ata storage memory in hours datalog mode and datalog interval in seconds and then after 10 seconds the display shows the instantaneous reading of the gas concentration in ppm and is ready to monitor gases To turn off the MultiRAE PLUS Multi gas Monitor press and hold the MODE key for 5 seconds Monitor will beep once per second during power down sequence with a count down timer showing the number of remaining seconds The message Off flashes on the LCD display and the 2 7 OPERATION OF MULTIRAE PLUS display will go blank indicating that the monitor is turned off Turning off the Multi gas monitor with the AC charger in place will result in a display of Charging or Battery Charged and indication of battery voltage This indicates that the monitor is off but the smart charger circuit is now active To turn the unit on from the charge or discharge mode press the MODE key Data protection during power off When the monitor is turned off all the current real time data including TWA STEL Peak and elapsed time are erased However the datalog data is preserved in non volatile memory Even if the battery is disconnected the datalog data will not be lost During the power off period the real time clock will continue to operate until the battery is completely drained usually in 5 7 days without any charging If the battery is completely drained or is disconnected from the monitor for more than 30
51. d text to a tab delimited text file so that Microsoft Excel can read it directly COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 1 Receive Data from MultiRAE PLUS To receive the logged data from the MultiRAE Plus click Communication gt Receive Data menu item or click the Receive Data toolbar button left arrow with Recv letters a message box will appear to remind the user to connect the instrument to the PC through the serial port After making sure the instrument is connected to the PC click the OK button to start the data transfer After the data transfer is finished a new client window is opened with the newly received logged data displayed In order to save the logged data for future use the user can click File gt Save or File gt Save As menu item to save the newly received logged data to a file COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 2 View Logged Data in Text Mode Once the user opened a data file or received the logged data from the instrument a data window appears as shown in Figure 5 10 Mork uate I imng S0451 dk MukiHAE Po D 5PT Instrument BultiRAE FCNSO E User ID g0000001 Lists Points 2 Last Calibration Time Event H2 8064101989 03 k Eveni H3 a LA D Hish Ta Levels _ Event Ha a 10 1569 06 38 Low Alara Mat Eb Giph Mode Le Event H1 a E00 599 CE l Eveni 2 a 06101999 CE UN 06 10 1999 09 38 L Event HI a BADAIA CE 06 10 1999 09 38 L Eveni Ha a 05101999 08 38 A STELIT WaT
52. d y axis in the Graph Range tab page of the Graph Settings dialog box To display the Graph Settings dialog box click any place in the right pane so that pane has the focus then click Option gt Graph Settings menu item to display the Graph Settings dialog box To bring the Graph Range tab page the user can simply click the page header of the Graph Range tab page Figure 5 15 shows the Graph Range tab page of the Graph Settings dialog box 5 31 COMPUTER INTERFACE FOR MULTIRAE PLUS This is the place where the user can choose the graph range on the x axis and y axis Graph Settings Figure 5 15 Graph Range Tab Page To choose the range of Y axis the user first click the User Defined radio button in the Y Axis Data Value Range group box then the user can specify the top value and the bottom value in the Data Value Range Y axis group box If the user select the Default radio button in the Y Axis Data Value Range group box the ProRAE Suite software will scale the range of Y axis by itself to cover the maximum data value on y axis 5 32 COMPUTER INTERFACE FOR MULTIRAE PLUS To choose the range of X axis the user first click the User Defined radio button in the X Axis Data Time Range group box then specify the start time fields in the Start Time X axis group box and the end time fields in the End Time X axis group box If the user select the Default radio button in the X Axis Data Time Range group box
53. diately to ensure proper operation of the sensor 10 Adjust Pump Stall Threshold This display can be used to calibrate the pump stall threshold If the gas inlet is blocked but the pump does not shut down or the pump shut down too easily with a slight blockage to the gas inlet then the pump stall threshold value may be set too high or too low Use the following steps to adjust the pump stall threshold 1 The maximum and average pump current is displayed on the first row Pump xxx zzz The current pump stall value is displayed on the second row Stall yyy The typical maximum pump current without any blockage should be between 20 35 when the speed is set to be low and the water trap filter is installed The typical stall value should be higher than the un blocked pump current by at least 5 8 counts 2 The user can block the gas inlet for about ten seconds and watch the pump current reading The stall threshold should set to be the average of the idle reading and the block reading That is Stall Idle Block 2 The readings to be used in the calculation are maximum pump current readings at the xxx location of the unit 3 Use Y or N key to increase or decrease the stall value until it is the average of the idle reading and the block reading Press MODE key to exit this display If the threshold value is changed a message Save new 8 8 TROUBLESHOOTING stall threshold
54. e Isobutene Isobutyl acrylate Isopropanol Jet fuel JP 4 Jet fuel JP 5 Jet fuel JP 8 Methane Methanol Methyl acrylate Methyl ethyl ketone Methyl isobutyl ketone 10 6 11 7 0 97 ee Fe fe EE i aa 0 51 0 85 28 06 1 5 0 60 6 0 0 6 0 46 0 6 0 32 0 80 0 60 LEL 2 8 2 3 2 1 2 4 2 3 N lo ww APPENDIX B Compound 10 6 11 7 LEL Methyl methacrylate Methyl t butyl ether 0 91 Nitric oxide Octane n 18 29 Pentane 1 8 Perchloroethene Pinene a Pinene b Propane 1 5 Propene 1 5 Styrene Tetrahydrofuran Toluene 1 9 Trichloroethane 1 1 1 Trichloroethene Vinyl chloride 1 8 Xylene m 2 7 Xylene o 0 59 0 69 3 0 Xylene p 0 45 0 62 2 8 NR No Response Blank space no data For more data see Technical Notes 106 PID and 156 LEL The VOC correction factors in Table B 1 are measured relative to isobutylene gas and LEL correction factors are measured relative to methane gas All measurements are at lt 5 relative humidity and 25 C typically at 50 100 ppm for VOC and 20 80 LEL for LEL The factors may change at higher concentration or different temperature and humidity conditions The factors are to be multiplied by the reading to obtain the actual concentration or LEL of the gas If the correction factor of a gas is lt 1 0 then the sensitivity to the gas is higher than that of isobutyl
55. e it requires only a small amount of ions inside the lamp to initiate the glow discharge process If the UV lamp has not been used for a long period of time gt 1 month it may be slightly harder to turn on If such a condition occurs an error message Lamp will appear in the monitor display during the power on sequence This phenomenon is more significant in 0 25 UV lamps used in MultiRAE Plus products because of the relatively small lamp size To solve this problem simply turn on and off the monitor a few times and the lamp should turn on Gently shaking the monitor will also help to initiate the glow discharge process After the UV lamp is turned on for the first time it should be easier to turn on the UV lamp next time 7 9 MAINTENANCE The MultiRAE Plus has a built in sensing mechanism to monitor the status of the UV lamp If the UV lamp is not on the error message Lamp will be displayed It is possible that the UV lamp is actually on when the lamp error message appears When the UV lamp becomes old changed or the configuration file in side the MultiRAE has been totally over written the threshold level to determine lamp failure may be wrong and cause a false alarm To eliminate such a possibility simply apply some VOC by putting a felt tip marker close to the inlet of the MultiRAE and see if the VOC raw count goes up If the UV lamp is on while the error message persists then it is necessary to adjust the
56. e maximum datalogging time Periodic Start and stop datalogging daily based on a preset time hour and minute Scheduled Start and stop datalogging based on a preset date and time month date hour and minute Choose a datalog option Most of the datalogging options can be programmed from the monitor Additional options can be programmed using a PC and downloaded to the monitor see Chapter 5 for details on how to program various datalogging options OPERATION OF MULTIRAE PLUS Start stop datalogging manually If manual datalogging mode has been selected from the normal operation menu toggle through the menu using the MODE key until the Start Datalog prompt is displayed Pressing the Y key turns on datalogging Likewise pressing the Y key while Stop Datalog is displayed turns off datalogging The other three datalogging options will start and stop automatically without any user intervention Datalogging event Each time a datalogging operation is initiated a datalog event is created Information such as start time datalogging period alarm limits etc will be recorded in the event header followed by the measurement data If more than 900 measurement intervals are recorded in one event a new event will be created automatically Datalogging pause Under the following conditions the datalogging will be paused automatically 1 When entering programming mode datalogging will stop Upon exiting the prog
57. e keypad on the front panel of the monitor The functions of the 3 keys during normal operation are summarized in Table 2 1 on the next page LED alarm charge status Light VOC TOX2 sensor 0 1 0 0 0 0 0 0 20 9 LEL OXY mp 3B Mode Y Key N Key key Figure 2 2 Key pad and Display of the MultiRAE PLUS Multi gas Monitor OPERATION OF MULTIRAE PLUS Table 2 1 Function in Normal Operation Turn on off the power and choose different display mode Toggle on off the back light Answer as No 99 Alarm test and alarm acknowledgment turn off latched alarm turn on pump or LEL sensor Answer as Yes Pressing and holding MODE key for 5 seconds turns off the power to the monitor Monitor will beep once per second during power down sequence Press MODE key momentarily to choose different display modes see Section 2 4 for details OPERATION OF MULTIRAE PLUS The Multi gas Monitor includes a 2 line 16 digit dot matrix LCD display The LCD shows the following eight types of displays during normal operation if the MODE key is pressed Real time instantaneous gas concentration in ppm for toxic and VOC gases by volume for oxygen and LEL for combustible gases Sensor names Peak and minimum gas concentration for toxic VOC oxygen and combustible gases 15 minute Short Term Exposure Level STEL values of the toxic and VOC gases in ppm and 8 hours Time Weighted Average TWA
58. e span gas during LEL or VOC gas calibration 1 Change LEL VOC Span Gas is the next sub menu item in Table 4 3 Press Y key If LEL sensor is installed and enabled the display shows LEL Span methane Otherwise the message No LEL installed will appear If the user does not want to change the LEL span gas press Y key to accept the current selection and exit this sub menu If the user wants to select a different LEL span gas press N key Then use Y or N key to scroll through a list of gas names until a desired gas name appears in the LCD display then press MODE key to select the new gas name The display shows Save To confirm the new gas selection press the Y key to accept the change Press the N key or the MODE key to discard the change and move to the next display PROGRAMMING OF MULTIRAE 6 If the VOC sensor is installed and enabled the display shows VOC Span isobutylene LEL OXY TOX2 Otherwise the message No VOC installed will appear 7 If the user does not want to change the VOC span gas press Y key to accept the current selection and exit this sub menu 8 If the user wants to select a different VOC span gas press N key first then use Y or N key to scroll through a list of gas names until a desired gas name appears in the LCD display then press MODE key to select the new gas name 9 The dis
59. ects the pump to the gas inlet port Replace a new pump assembly Connect the Tygon tubing to the gas inlet port Solder the pump wire and screw down the pump assembly to the analog PCB Refer to Figure 7 2 replace the gas piping plate and tighten the four screws to hold down the sensors Re connect the battery pack Replace the monitor cover TROUBLESHOOTING 8 TROUBLESHOOTING To aid the user in diagnosing the monitor the monitor has a special diagnostic mode that can display critical low level parameters Section 8 1 describes the operation of the diagnostic mode Section 8 2 summarizes the frequently encountered problems and suggested solutions Turning on the MultiRAE PLUS monitor in diagnostic mode and using the troubleshooting table in Section 8 2 the user can usually narrow the problem down to one or two areas and correct the problem without having to return the monitor for repair WARNING The diagnostic mode allows the user to set several low level parameters which are very critical to the operation of the monitor Extra care should be taken when setting these low level parameters If the user are not familiar with these parameters and set them incorrectly it may cause the monitor to shut down or malfunction The diagnostic mode should be used by qualified personnel only TROUBLESHOOTING 8 1 Special Diagnostic Mode To place the monitor into the special diagnostic mode first turn the monitor off Next push and ho
60. ene VOC or methane LEL APPENDIX C APPENDIX C MULTIRAE PLUS DATA CONVERSION TO MICROSOFT EXCEL The MultiRAE PLUS multi gas monitor has a built in 20 000 point datalogger that in conjunction with the ProRAE Suite software will provide data that can be converted into other application program such as Microsoft Excel Version 7 0 for further data manipulation or graphing To convert the data file into Excel and to facilitate easier data manipulation the follow these procedures 1 Export the event data to a tab delimited text file as described in Section 5 6 6 Export the displayed data to a text file Assume we have just export the event data to a file called TextEvent txt in C To convert that file to a MS Excel file open the MS Excel software as shown in Figure C 1 Figure C 1 Excel Window C 1 APPENDIX C 2 Click File gt Open menu item to open the Open dialog box select the folder where the file TextEvent txt is resided and select the Files of type as Text Files Click to select the file TextEvent txt as shown in Figure C 2 a Text Files prn txt csv any time E Figure C 2 Open Dialog Box 3 Click OK button a Text Import Wizard dialog box is open as shown in Figure C 3 Text Import Wizard Step 1 of 3 windows anso E T 4 E a ra Figure C 3 Text Import
61. ensor readings provide a quick diagnose on the response and the sensitivity of each sensor When zero gas fresh clean air is applied to the monitor the raw sensor readings typically should be between 200 to 700 for toxic and VOC sensors between 100 to 1300 for LEL sensor and between 1200 to 2300 for oxygen sensor If the raw reading is outside these ranges when zero gas is applied the sensor or the electronics may be defective When a specific gas is applied to the monitor the corresponding sensor should respond and the raw reading should increase or decrease If the reading of the corresponding sensor does not change when the specific gas is applied then the sensor may be defective TOX1 VOC TOX2 365 360 373 530 RAW 1879 LEL OXY 2 Sensor Name All the toxic oxygen and LEL sensors have a non volatile memory which contains the sensor identification and other vital information such as manufacturing date expected operating life etc If a sensor is programmed and installed properly in the monitor the sensor name should be displayed If the sensor name does not show up in the display then the sensor may not be programmed properly or may be defective TROUBLESHOOTING 3 Adjust Lamp Failure Threshold This diagnostic menu only applies to the monitor which is equipped with a PID detector option This display can be used to calibrate the PID lamp failure threshold If the lamp appears to be good but in normal operation a lamp
62. erefore the calibration adapter for these two models is a simple 6 inch Tygon tubing with a male Luer connector on one end During calibration simply connect the tubing to the water trap filter on MultiRAE PLUS and the calibration gas on the other side Alternatively the calibration gas can be sampled 1 from a Tedlar gas bag 2 from an open cup or tube using flowing calibration gas exceeding the pump demand or 3 using a demand flow regulator directly from the gas cylinder The PGM50 4 model does not have a built in sampling pump A special diffusion calibration adapter is provided During calibration place this adapter over the front cover of the monitor and connect the Tygon tubing to the regulator on the gas bottle PROGRAMMING OF MULTIRAE 4 PROGRAMMING OF MULTIRAE PLUS The MultiRAE PLUS Monitor is built with a microcomputer to provide programming flexibility for the user Authorized users can re calibrate the monitor change the alarm limits change site ID user ID datalogging period real time clock etc Programming is menu driven to provide intuitive end user operation The display shows the menu options and the key pad is used for menu selection and data entry Note The real time monitoring of the gas concentration continues while in the programming mode However during the calibration or review datalog procedures the real time monitoring will pause until the procedures are completed In addition entering prog
63. ey on the keyboard or click the OK button on the menu to start the setup process If the user choose the default settings in every steps of the process the ProRAE Suite software package will be installed under the default directory C Program Files RAE Systems Inc ProRAE Suite After the software is installed successfully a new menu item ProRAE Suite is added to 5 2 COMPUTER INTERFACE FOR MULTIRAE PLUS the Programs menu To start the ProRAE Suite software click the Start button on the taskbar to display the Start menu click the Programs menu item to display the Programs submenu then click the ProRAE Suite menu item to display the ProRAE Suite submenu There are two submenu items under the ProRAE Suite submenu ProRAE Suite and Readme as shown in Figure 5 2 Click the ProRAE Suite submenu item to start the ProRAE Suite software C1 CS 3Com NIC Utilities My Computer Explorer e Internet Explorer gt Internet Mail gt Intemet News EX Microsoft Access Microsoft Binder BS Microsoft Excel A Microsoft NetMeeting 24 Microsoft Outlook j Microsoft PowerPoint EY Microsoft Word MS DOS Prompt ES The Microsoft Network QY Windows Explorer I Windows Messaging Accessories Compaq Utilities GS Graphics Server 5 7 GS Hiask 95 Compag Information Center Fee New Office Document Us Lotus Applications Main MFC Samples on CDROM QA MFC Template GS Microsoft ODBC GS Microsof
64. finished chart is below For additional information and other modifications that can be made to the Excel chart please refer to the Excel instruction manual File Edit View Insert Format Tools Window Help la xj oela alely ele ele sel AA isl lel fe Olne JT Jelzlul sx sls Si Gt wl MaltiRAE Demo Dat Time 14 4 gt rN Chart2 Shestt Z Sheet Sheet Z Sheet Z Sheets Z 4 Ready NUM RAE Systems Inc 1339 Moffett Park Drive Sunnyvale California 94089 Main Contact Numbers TEL 408 752 0723 FAX 408 752 0724 Toll Free Numbers Instrument Sales 877 RAE CUSTomer 723 2878 Technical Service 888 RAE 4800 723 4800 Tube Sales 888 RAE TUBE 723 8823 E mail Instrument Sales raesales raesystems com Technical Service tech raesystems com Tube Sales raetubes raesystems com World Wide Web site www raesystems com
65. g up off monitor or corrupted Solutions Disconnect and re connect characters battery to reset computer in LCD Call authorized service display center Calibration Reasons No standard gas input error Solutions Make sure standard gas message flows into monitor TROUBLESHOOTING Possible Reasons amp Solutions Bat Reasons Discharged battery message in operation Solutions Recharge battery Voltage Reasons Battery fuse blown or wrong too high AC adapter or AC adapter message in does not fully plug in charge mode Solutions Check battery and adapter Detach and plug in the adapter again Full scale Reasons Dirty or wet sensor measure ment in Solutions Clean and dry sensor humid Replace water trap filter environment VOC Reasons Dirty PID sensor module Measureme Weak PID lamp nt max out at certain Solutions Clean lamp sensor module level Replace new lamp Replace filter Excessive Reasons Leaky inlet path pump noise Defective pump or no inlet air vacuum Solutions Check inlet connection Replace a new pump APPENDIX A APPENDIX A QUICK REFERENCE GUIDE DISPLAY MODE Display Instantaneous Readings N IMODE for 3 seconds Security level 0 or Display Mode No Action Security level 1 or Text Mode Password check Wrong password Back to instantaneous display Correct password Enter Programming menu N Toggle back light Y Test alarm stop alarm
66. he equivalent concentration of the selected LEL or VOC gas The user can also modify this relative correction factor to increase or decrease the gas reading This allows users to create a custom factor for a specific gas or mixture of gases 1 Change LEL VOC Gas Selection is the first sub menu item in Table 4 7 2 Press Y key If an LEL sensor is installed and enabled the display shows TOXI VOC TOX2 LEL Gas methane LEL OXY Otherwise the message No LEL installed will be displayed and skip to Step 8 3 If the user does not want to change the LEL measurement gas press Y key to accept the current gas and skip to Step 6 4 If the user wants to modify the LEL measurement gas press N key first then use Y or N key to scroll through a list of gas names until the desired gas name appears in the LCD display then press MODE key to select the new gas name 4 40 PROGRAMMING OF MULTIRAE 5 The display shows Save new gas To confirm the new gas press the Y key to accept the change Press the N key or the MODE key to discard the change and move to the next step 6 Display shows methane LELFactor 1 00 where 1 00 is the calculated correction factor of the selected gas in Step 4 7 If the user does not want to modify the LEL correction factor press Y key and go to Step 8 To modify this factor press N key first Then starting from the left mo
67. his is called the latching alarm mode The alternative mode is to automatically reset the alarm signal when the alarm condition is cleared The default alarm mode is automatic reset see Chapter 4 or 5 for details on how to set alarm mode Alarm Signal Summary The various alarm signals are summarized here Condition AlarmSignal Alarm limit plus sensor name on LCD Alarm limit plus sensor name on LCD sensor name on LCD sensor name on LCD Negative Drift or 3 beeps flashes per second Over Range plus NEG or OVR name on LCD Pump failure 3 beeps flash per second plus Pump message on LCD LEL sensor off 3 beeps flash per second plus LEL sensor name and Off message on LCD OPERATION OF MULTIRAE PLUS PID lamp failure 3 beeps flash per second plus Lamp message on LCD Low battery 1 flash per second 1 beep per minute plus Bat message on LCD Memory full 1 flash per second plus Mem message on LCD Alarm Signal Testing Under normal non alarm conditions it is possible to test the MultiRAE PLUS LED buzzer and back light by pressing the Y key momentarily The buzzer will beep once and the LED and back light will flash once to indicate that these alarm signals are functioning correctly WARNING The alarm signals are disabled during PC communication calibration or datalog review operation To reduce the risk of exposure to hazardous atmospheres perform PC communica
68. hout any restriction This is the default security setting The level 1 security requires a 4 digits password to enter programming mode Level 0 security allows a user to enter the programming mode without any password checking as in the level 2 However it does not allow a user to save any changes to the alarm limits real time clock correction factor user and site information etc A user can still perform calibration with level 0 security The security level must be set using a PC see Chapter 5 for details on setting up the security level Once inside the programming mode LCD will display the first menu Each subsequent menu item can be viewed by pressing the N repeatedly until the desired menu is displayed To enter the sub menu of a particular menu press the Y key and the sub menu will be displayed To exit the programming mode and return to the normal operation press the MODE key at any of the first tier menu displays PROGRAMMING OF MULTIRAE 4 2 Keys for Programming Mode The three keys perform a different set of functions during the programming mode as summarized below Table 4 2 Key Function in Programming Menu Exit menu when press momentarily or exit data entry mode when pressed and held for 1 second Increase numerical value for data entry or confirm yes for a question Decrease numerical value for data entry or deny no for a question PROGRAMMING OF MULTIRAE 4 3 Entering into Programming
69. ion 4 10 PROGRAMMING OF MULTIRAE 4 4 2 Multiple Sensor Calibration This function simultaneously determines the second point of calibration curves for multiple sensors in the monitor Mixed standard reference gases is needed to perform this procedure The user can choose several gas mixtures to be used in multiple sensor calibration Connect the tube to the sampling bag filled with mixed gas as shown in Figure 4 1 1 Continuing from Step 4 of the previous Section the display should show Multiple Sensor Calibration Press the Y key The display shows all the pre selected gases for the sampling bag filled with mixed gas and OK question Press Y key to accept the multiple sensor selection and start the calibration or press the N key to modify the sensor selection and go to Step 7 TOX1 VOC TOX2 co cose HS LEL OK OXY LEL OXY 2 Turn on the valve of the sampling bag to start the flow of the span gas Display shows Apply Mixed Gas and will wait for the calibration gas to reach the sensor When the calibration gas has reached the sensor the display will show calibration in progress 60 with the countdown timer shows the number of remaining seconds while the monitor performs calibration When the countdown timer reaches 0 the display shows the name of each sensor the message cal ed and the calibrated values for each gas If no gas has reached the sensor after 60 seconds the di
70. is updated at one second intervals and is shown in the LCD display with Peak message TOX1 VOC TOX2 5 2 0 3 10 Peak 20 9 LEL OXY The Minimum reading is the lowest reading of each gas concentration since the monitor was turned on The reading is updated at one second intervals and is shown in the LCD display with Min message 0 0 0 0 Min 19 9 5 The STEL reading is the last 15 minute average reading of the gas concentration The reading is updated once per minute and is shown in the LCD display with STEL message For the first 15 minutes will be displayed This reading applies to VOC and toxic gases only 0 0 0 0 STEL OPERATION OF MULTIRAE PLUS 6 The TWA reading is the accumulated reading of the gas concentration divided by 8 hours since the monitor was turned on The reading is updated once a minute and is shown in the LCD display with TWA message This reading applies to VOC and toxic gases only 0 0 0 0 TWA LEL OXY TOXI TOX2 7 The battery voltage reading is the current battery voltage in volts The reading is updated once per second and is shown in the LCD display The shut down voltage is also shown Note A fully charged battery pack should show 4 8 volts or higher When the battery voltage falls below 4 4 volts a flashing Bat will appear as a warning message This means there is 20 30 minutes run time left before the monitor will be turned off automatically whe
71. ist Each configuration file has a file extension of CFG There is one generic MultiRAE Plus configuration supplied with ProRAE Suite software Default_MultiRAE_V CFG where is the version number of the default configuration file For example Default_MultiRAE_V216 cfg means this file is for MultiRAE monitor and its version is V2 16 Choose a configuration file by highlighting the file name and press the Enter key or click the OK button on the dialog box Once the configuration file is open the configuration data is displayed in the newly opened client window as shown in Figure 5 6 ProAAk Suite Detail MuhiPRAE V716 cio MultiAAE PGS Mi E alala slal Hal lt i gt 2 be Delma HuliHAb VAT chg MultiHAE Pb ede Instrument MuliA E PGMS0 5P Serial Number 000000 Fintware Version 2 16 Datalog Enabled General Site ID DO000001 User ID 00000 Security Level Level 2 no password needed User Mode Program Warmup Time 10 sec Comfort Beep Disabled 1 Back Light Manual Figure 5 6 Displayed Configuration Data COMPUTER INTERFACE FOR MULTIRAE PLUS To edit the opened configuration data file click the Edit gt Configuration menu item or the Configuration toolbar button to open the Edit Configuration File dialog box as shown in Figure 5 7 a F all a z Figure 5 7 Edit Configuration File Dialog Box The Edit Configuration File dialog box contains three tab pages General
72. itor has not been charged for 5 7 days the battery voltage will be low Therefore it is a good practice to always charge the monitor before using it It is also recommended to fully charge the monitor for AT LEAST 10 HOURS before initial use see Section 7 for more information on battery charging and replacement WARNINGS Use only RAE Systems battery packs part Nos 500 0028 500 0029 or 500 0039 This instrument has not been tested in an explosive gas air atmosphere having an oxygen concentration greater than 21 Substitution of components may impair intrinsic safety Recharge batteries only in non hazardous locations AVERTISSEMENT Utiliser seulement l ensemble de batterie RAE Systems la reference 500 0028 500 0029 au 500 0039 Cet instrument n a pas t essay dans une atmosphere de gaz air explosive ayant une concentration d oxyg ne plus lev e que 21 La substitution de composants puet compromettre la s curit intrinsique Ne charger les batteries que dans emplacements d sign s non dangereuse STATIC HAZARD Clean only with a damp cloth DANGER RISQUE D ORIGINE ELECTROSTATIQUE Nettoyer uniquement avec un chiffon humide vi CAUTION For safety reasons this equipment must be operated and serviced by qualified personnel only Read and understand instruction manual completely before operating or servicing ATTENTION Pour des raisons de s curit cet equipment d
73. ivity to a specific gas PROGRAMMING OF MULTIRAE Correction factors are often used to obtain a calculated concentration of a specific gas while using a different gas during calibration The MultiR AE PLUS monitor store three sets of correction factors one for the LEL sensor one for the 10 6 eV PID sensor and the other for the 11 7 eV PID sensor Each set consists of 20 to 40 different gases The user can choose one gas from the list to be the calibration gas and another gas to be the measurement gas For example the user can choose methane as the calibration gas for the LEL sensor and select pentane as the measurement gas The MultiRAE PLUS monitor will calculate the correction factor between these two gases and convert the measured value of the LEL sensor into equivalent concentration of the pentane gas Similarly the user can choose one VOC gas for calibration and choose another VOC gas for measurement In addition the correction factor is different for the PID sensor due to different energy of the UV lamp used in the PID sensor The user needs to choose the correct type of UV lamp 10 6 eV or 11 7 eV for the PID sensor in Section 4 8 4 PROGRAMMING OF MULTIRAE 4 8 1 Change LEL VOC Gas Selection This function allows users to choose one of the pre stored LEL or VOC gases in the monitor and calculate its correction factor relative to the LEL or VOC calibration gas This factor will then be used during gas measurements to show t
74. lamp threshold Please refer to Chapter 8 on adjusting the threshold level for the UV lamp If chemical liquid or dust has been sucked into the unit clean the lamp window surface by wiping it with anhydrous methanol using a cotton swab Rub in a circular motion at moderate pressure After cleaning hold the lamp up to the light at an angle to detect any remaining film Repeat the process until the lamp window is clean Never touch the window surface with fingers or anything that may leave a film CAUTION Water will degrade window surfaces especially the 11 7 eV lamp window 7 10 MAINTENANCE 7 5 Sampling Pump Replacement The sampling pump is positive displacement piston pump When approaching the end of the specified life time of the pump it will consume higher amount of energy and reduce its sample draw capability significantly When this occurs it is necessary to replace the pump 1 Turn off power of Multi gas Monitor Refer to Figure 7 2 open the monitor cover disconnect the battery pack carefully unscrew four No 2 screws that hold down the gas piping plate to the analog PCB and sensors Remove the gas piping plate Carefully loosen the connector Unscrew the two screws that hold the pump assembly to the gas plate For older model use a soldering iron to de solder the two wires that connect the pump to the PCB Unscrew the two screws that holding the pump to the PCB Disconnect the Tygon tubing that conn
75. ld the Y key while still holding the Y key also push and hold the MODE key for at least two seconds After the required delay release both keys the monitor will now go through the normal start up display sequence and display a Diagnostic mode message At the end of the special mode start up the display will show 1 to 5 numbers with a message Raw These numbers are raw sensor readings without calibration Other critical parameters of the monitor are available as shown in Table 8 1 They can be reached by pressing the MODE key repeatedly until the desired parameters are displayed TROUBLESHOOTING Table 8 1 Show rawreadings MODE Show sensorname MODE Adjust PID lamp failure threshold MODE Show battery type and Tox bias Show xl and x10 range of PID sensor MODE Adjust LCD contrast MODE Check LEL power on off RE temperature ad expiration date ee expiration date MODE Adjust pump stall threshold MODE Adjust back light on off threshold Show serial number and toggle pump speed MODE Begin battery deep discharge MODE Show battery duration time MODE Communicate with PC Note The 3 and 5 display only apply to the monitor which is equipped with PID detector option Here is a brief description of each diagnostic display and how to interpret the displayed values TROUBLESHOOTING 1 Raw Sensor Readings The raw s
76. le 2 0 Eveni 1 a AIMER Instrument HultiRAE FCHS0 E _Evenl 2 amigas d User ID 00000001 Event H3 at O51 001399 Orb Dats Points 2 L Event Hd a BADANI CEE E Geoph Mode Event 1 at 0510 1568 09 33 ype Eu H Eveni H2 a 1115 03s j Event 3 a 05 10133 GE L Eveni H4 a A0 Oss Linet Date Tise D D GTEL TWANG CCCEELLCLLLCCLELCLCLLLLLCEEEC 1 06 10 1999 09 98 2 05 10 1999 09 38 Event HS st E007 856 Oe 18 Evert HI a Ea TOTIS JE Everi Hl at DINTI IE zj al o dl Figure 5 11 STEL TWA AVG of the Logged Data COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 4 View Summary Information To view the summary information of any event such as peak data value and minimum data value click the event number item under the tree item Summary in the left pane the right pane displays the summary information of that event as shown in Figure 5 12 Pofl AE Guis ensreg FAST chet HehFlAE Pts Sl he E Event 1 a O11 355 SE Instrument HultiRAE PGHGO 6E Event 2 a I oe esr ID 000000 Site ID Event tiamo bets Pointe 2 Date T Last Calibration Tome Dae bei P99 1 Event BE at OFT ES QUE Start AE DS 10 1999 09 58 End At OF Bs STELTER ce S RR E a EA S E A A E m D A e a Even s CELL eee Seer Colpo WOOL api eine nes High Alara Levels 200 0 100 gt nn Lov Alara Levels F H Eventi a a OS STEL ilsra Levels Emmi H a 11 Se TH laru Levels Eb rase Peek Data Valium j Event Tia
77. letely absorb a kerosene type fuel Tygon can be used for the common confined space entry gases including CO HS and CH4 OPERATION OF ACCESSORIES 3 5 Dilution Fitting An optional dilution fitting can be installed together with the remote sampling probe or Tygon tubing on the gas inlet port to dilute the gas samples This fitting is needed if the gas sample does not contain more than 10 oxygen This is due to the fact that the combustible sensor will not function correctly when the oxygen concentration falls below 10 The dilution fitting will increase the oxygen concentration so that the combustible sensor can still be used under oxygen deficient conditions The other use of the dilution fitting is to measure the combustible VOC or toxic gas when the concentration exceeds the upper limit of the sensor range See the dilution fitting instructions for proper installation Make sure to set the dilution ratio in the programming mode see Section 4 8 so that the correct gas reading will be displayed when the dilution fitting is used WARNING For this application the user must have the monitor or dilution air inlet located in a clean atmosphere outside the confined space and use a remote access probe or Tygon tubing to sample the gas under test OPERATION OF ACCESSORIES 3 6 Calibration Adapter There are two types of calibration adapter for the MultiRAE PLUS monitor The PGM50 4P or PGM50 5P model has a built in sampling pump Th
78. ltiRAE PLUS Monitor 6 1 The PID sensor for this MultiRAE PLUS monitor is constructed as a small cavity in front of the UV lamp The other sensors are mounted next to the PID sensor A diaphragm pump is installed inside the monitor to draw the air sample into the sensor manifold and then distribute it to all sensors A single chip microcomputer is used to control the operation of the alarm buzzer LED pump and light sensor It measures the sensor readings and calculates the gas concentrations based on calibration to known standard gases The data are stored in non volatile memory so that they can be sent to a PC for record keeping RS 232 transceivers provide a serial interface between the monitor and the serial port of a PC A 2 line by 16 character LCD display is used to show the readings The user interacts with the monitor through three keys on the front panel keypad A rechargeable Li ion or Ni Cd battery or a set of four disposable AA alkaline batteries powers the monitor NOTE The printed circuit board is connected to the battery pack even if the power is turned off Therefore it is very important to disconnect the battery pack before servicing or replacing sensors or any components inside the monitor Severe damage to the printed circuit board may occur if the battery pack is not disconnected before servicing the unit MAINTENANCE 7 MAINTENANCE As shown in Figure 7 1 the major maintenance items of MultiRAE PLUS
79. mentarily to advance to the next digit The flashing digit will move to the next digit to the right Repeat this process until all 4 digits of the new period are entered Press and hold the MODE key for 1 second to exit data entry mode If there is any change to the existing value the display will show Save Press the Y key to accept the new value and exit the datalog sub menu Press the N key to discard the changes and move to the next menu option 4 To preserve the previously stored period press and hold the MODE key for 1 second The monitor will exit data entry mode and move to the next sub menu item in Table 4 5 PROGRAMMING OF MULTIRAE 4 6 4 Select Data Type The user can choose to store either the average or the peak value during each datalog period 1 Select Data Type is the fourth sub menu item in Table 4 5 Press the Y key the display shows the current data type Data Type Average Press the Y key to accept the currently displayed data type Press N key to change to the other data type Data Type Peak Press MODE key to exit this sub menu and move on to the next sub menu If there is any change to the existing selection pressing the y key the display will show Save Then press the Y key to accept or the N key to discard and move to the next sub menu Note It is necessary to select Average data type in order to calcula
80. n The user can specify the calibration gas span for LEL OXY VOC Tox and Tox2 sensor here O a _ es _ Figure 5 9 Gas Selection Settings Tab Page Figure 5 9 shows the Gas Selection tab page There are three sets of gases for correction factors that the user can choose one for the LEL sensor one for the PID sensor with 10 6 eV lamp and other one for the PID sensor with the 11 7 eV lamp The following is the description of each field in the Gas Selection tab page of the Edit Configuration File dialog box VOC10 6 Current Gas selection COMPUTER INTERFACE FOR MULTIRAE PLUS This is the place where the user can choose a set of gases for the correction factors of the PID sensor with 10 6 eV The user can choose one gas from the Calibration Gas list box for calibration and another gas from the Measurement Gas list box for measurement Each list box contains a list of 20 to 40 gases Scroll the list using the up or down arrow until the desired gas name is shown Press Enter key to select the gas The user can also enter a custom gas name up to 16 characters long and a custom correction factor VOC11 7 Current Gas selection This is the place where the user can choose a set of gases for correction factors of the PID sensor with 11 7 eV The user can choose one gas from the Calibration Gas list box for calibration and another gas from the Measurement Gas list box for measurement Each list box contains a list of 20 to
81. n a single or multiple sensor calibration is performed a time stamp will be stored in the non volatile memory This information will be included in the datalogging report PROGRAMMING OF MULTIRAE 4 4 4 Modify Span Gas Value This function allows the user to change the span values of the standard calibration gases 1 Modify Span Gas Value is the next sub menu item in Table 4 3 Press Y key Display shows TOX1 TOX2 50 100 25 50 span 20 9 The cursor is blinking at the first digit of the first Span value If the user wants to modify any one of the span gas value go to Step 3 Otherwise press and hold the MODE key for 1 second to accept the previously stored span gas value and move to the next calibration sub menu Starting from the left most digit of the span gas value use Y or N key to change the digit value and press MODE key momentarily to advance to next digit the cursor will move to the next digit to the right Repeat this process until all span gas values are entered Press and hold the MODE for 1 second to save the new calibration gas value The display shows Save To confirm the new value press the Y key to accept the change Press the N key or the MODE key to discard the change and move to the next calibration sub menu PROGRAMMING OF MULTIRAE 4 4 5 Change LEL VOC Span Gas This function allows the user to select a specific LEL or VOC gas to be used as th
82. n ratio the display shows Save Press the Y key to accept the new ratio and exit the sub menu Press the N key to discard the changes and move to the next sub menu PROGRAMMING OF MULTIRAE 4 8 4 Change PID Lamp Type This programming menu only applies to the monitor which is equipped with a PID detector option There are two different energy UV lamps available for the PID sensor 10 6 eV and 11 7 eV The user can select either lamp from the programming menu 1 Change PID Lamp Type is the fourth sub menu item in Table 4 7 Press the Y key the display shows the current PID lamp selection PID Lamp 10 6 eV Press the Y key to accept the currently displayed PID lamp Press N key to change to the other lamp Press MODE key to exit this sub menu and return to the first sub menu If there is any change to the existing selection pressing the Y key the display will show Save Then press the Y key to accept the N key to discard and return to the first sub menu PROGRAMMING OF MULTIRAE 4 9 Exit Programming Mode 1 To exit programming mode from the first tier menu level see Table 4 1 press the MODE key once Display shows an instantaneous reading of normal operation mode 2 To exit programming mode from 2nd tier sub menu level see Table 4 2 4 6 press the MODE key twice 3 To return to programming mode press and hold down both the MODE
83. n the battery voltage falls below 4 2 volts Battery 4 8 V Shut down at 4 2 V LEL OXY TOX1 TOX2 OPERATION OF MULTIRAE PLUS 8 The run time reading is the accumulated On time in 9 hours and minutes since the monitor was turned on The reading is updated at one minute intervals and is shown in the LCD display together with the current date time and temperature 8 3 96 8 30 On 3 50 20 C The datalog menu shows the current datalog mode If manual datalog mode is selected the menu will prompt the user to turn on or off datalogging Pressing the Y key while Start Datalog message is displayed turns on the datalogging Likewise pressing the Y key while Stop Datalog message is displayed turns off the datalogging 10 The monitor will display the selected LEL and VOC gas name if the combustible sensor and PID sensor are installed When an LEL or VOC gas is selected the calculated gas concentration based on the built in correction factor for that specific gas will be displayed 11 Print Reading asks for printing out of the gas concentration reading If a serial printer is connected and ready pressing the Y key will print out the reading OPERATION OF MULTIRAE PLUS 12 The Communicate with PC menu allows the user to upload data from the MultiRAE PLUS to a Personal Computer PC or download configuration information from a PC to the MultiRAE PLUS Press the Y key and
84. o reset computer No LED or Reasons Defective LED or LCD back LCD back light light Solutions Call authorized service center Lost Solutions Ask the service center for password help Buzzer Reasons Bad buzzer inoperative Solutions Call authorized service center TROUBLESHOOTING Possible Reasons amp Solutions Reading Reasons Wrong calibration data abnormally Dirty sensor module high Dirty water trap filter Excessive moisture and water condensation Solutions Re calibrate with the gas Clean sensor module Replace water trap filter Blow dry the sensor module Lamp Reasons Wrong threshold message Dirty PID sensor during Weak or defective PID lamp operation Solutions Adjust the lamp threshold Clean PID sensor Replace PID lamp Reading Reasons Incorrect calibration abnormally Low sensitivity to the low specific gas Solutions Calibrate the monitor Replace sensor TROUBLESHOOTING Possible Reasons amp Solutions Read a Reasons Sensor zero drifted small The unit was out of battery background power connection or the value when sensor just plugged in there is no detectable Solutions Do fresh air calibration see gas Section 4 4 1 Wait for reading to stabilized Reading Reasons Incorrect gas calibration jumping Low sensitivity to cal gas around randomly Solutions Calibrate the sensor Use different cal gas Cannot turn Reasons Microprocessor han
85. of the selected gas in Step 10 13 If the user does not want to modify the VOC correction factor press Y key and exit the sub menu To modify this factor press N key first Then starting from the left most digit use the Y or N key to change the digit value and press the MODE key momentarily to advance to the next digit The flashing digit will move on to next digit to its right Repeat this process until all 4 digits of the new factor are entered Press and hold the MODE key for 1 second to exit data entry mode If there is any change to the existing value the display shows Save Press the Y key to accept the new value and exit the gas selection sub menu Press the N key to discard the changes PROGRAMMING OF MULTIRAE 4 8 2 Enable Disable Sensor This function allows the user to selectively enable or disable individual sensors in the MultiRAE PLUS monitor When a sensor is disabled the sensor will not measure nor display the gas concentration 1 Enable Disable Sensors is the second sub menu item in Table 4 7 2 Press Y key The display shows all the installed sensors in the monitor A previously enabled sensor is marked by an next to the sensor name The cursor will blink at the first sensor location Press Y key to enable the sensor and N key to disable the sensor A previously disabled sensor will show instead of the sensor name TOX1 VOC TOX2 CO
86. oit tre utilis entretenu et r par uniquement par un personnel qualifi Etudier le manuel d instructions en entier avant d utiliser d entretenir ou de r parer l quipement Vii CAUTION Before each day s usage sensitivity must be tested on a known concentration of methane gas equivalent to 20 50 of full scale concentration Accuracy must be within 0 to 20 of actual Accuracy may be corrected by calibration ATTENTION Avant chaque utilisation journali re verifier la sensibilit avec une concentration connue de methane equivalente a 20 50 de la pleine chelle La pr cision doit tre comprise entre 0 20 de la valeur vraie et peut tre corrig e par une proc dure di talonnage CAUTION Any rapid up scale reading followed by a declining or erratic reading may indicate a gas concentration beyond upper scale limit which may be hazardous ATTENTION Toute lecture rapide et positive suivie d une baisse subite au erratique de la valeur peut indiquer une concentration de gaz hors gamme de d tection qui peut tre dangereux viii WARNING The calibration of all newly purchased RAE Systems instruments should be tested by exposing the sensor s to known concentration calibration gas before the instrument is used or put into service For maximum safety the accuracy of the MultiRAE PLUS should be checked by exposing the sensor s to known concentrati
87. on calibration gas before each day s use AVERTISSEMENT La calibration de toute instruments de RAE Systems doivent tre test en exposant instrument a une concentration de gaz connue par une proc dure di talonnage avant de mettre en service l instrument pour la premi re fois Pour une securite maximale la sensibilit du MultiRAE PLUS doit tre verifier en exposant instrument a une concentration de gaz connue par une proc dure di talonnage avant chaque utilisation journaliere GENERAL INFORMATION 1 GENERAL INFORMATION MultiRAE PLUS is a programmable Multi gas monitor designed to provide continuous exposure monitoring of toxic gases oxygen and combustible gases for workers in hazardous environments It monitors three classes of hazardous gases 1 Organic vapors in the ppm range with the supplied Photo Ionization Detector PID using a 9 8 10 6 eV or 11 7 eV gas discharge lamp 2 Combustible gases near their lower explosive limits LEL with a catalytic bead sensor and 3 Inorganic compounds including oxygen deficiency with the electrochemical sensors Other features include Lightweight and Compact 16 oz 454 g Walkman size e Dependable and Accurate 10 hours monitoring with micro controller e User Friendly menu driven intuitive end use operation e Programmable Alarm Thresholds audio buzzer amp flashing display alarm MultiRAE PLUS PGM 50 consists of
88. owing information is also available by pressing the MODE key peak minimum STEL TWA run time in hours and minutes temperature in degree C datalog mode or enable disable datalogging operation in manual datalog mode LEL VOC gas names printing and communication with a PC options The user cannot get into the calibration mode from display mode so the user cannot do calibration and cannot change any of the parameters In the programming mode which is the default setting the user can perform all of the functions of the display 2 10 mode In addition the user can get into calibration mode perform calibrations and change any of the parameter in the OPERATION OF MULTIRAE PLUS calibration mode The following is the detail explanation of the displays when the MODE key is pressed D 2 The instantaneous reading is the actual gas concentration in parts per million ppm for toxic or VOC gases of volume for oxygen and of LEL for combustible gases The reading is updated once per second and is shown in the LCD display TOX1 VOC TOX2 0 0 0 0 0 20 9 LEL OXY The sensor names are displayed as LEL for combustible gas sensor VOC for PID sensor OXY for oxygen sensor CO HS etc for up to 2 toxic sensors TOX1 VOC TOX2 co VOC HS LEL OXY 2 11 3 4 OPERATION OF MULTIRAE PLUS The Peak reading is the highest reading of each gas concentration since the monitor was turned on The reading
89. play shows Save To confirm the new gas press the Y key to accept the change Press the N key or the MODE key to discard the change and return to the first calibration sub menu PROGRAMMING OF MULTIRAE 4 5 Change Alarm Limits In the programming mode the users may change alarm limits of each sensor for the MultiRAE PLUS Monitor Table 4 4 shows the sub menus for changing the alarm limits Table 4 4 Alarm Limit Sub Menu Change High Alarm limit Change Low Alarm limit Change STEL alarm limit Change Average alarm limit 1 The sub menu item in Table 4 4 allows the user to change the high alarm limit low alarm limit STEL alarm limit or average alarm limit The average alarm limit can be Running Average or TWA Time Weight Average depending on the menu selection on Change Averaging Method see Section 4 7 8 Press N key to circle through the sub menu Press Y key to enter a sub menu and the display shows HIGH LOW STEL TWA or AVG with a flashing cursor on the left most digit of the previously stored alarm limits 200 100 0 20 20 HIGH 23 5 LEL OXY TOX1 TOX2 PROGRAMMING OF MULTIRAE 35 50 0 10 10 LOW 19 5 100 25 0 15 STEL 35 10 0 10 TWA 1 0 10 0 10 AVG To modify this limit starting from the left most digit use the Y or N key to change the digit value and press the MODE key momentarily to advance to the next digit The
90. ppm 60 sec O 0 30 0 1 15 sec VOC 0 200 ppm 0 1 ppm 10 sec VOC 200 2000 ppm 1 ppm 10 sec LEL 0 100 1 15 sec HCN 0 100 ppm I ppm 60sec NH 0 50 ppm 1ppm 150 sec PH 0 5 ppm 0 1 ppm 60 sec 90 dB buzzer and flashing red LED to indicate exceeded preset limits low battery or sensor failure Calibration Two point field calibration for fresh air and standard reference gases Attachment Rubber boot wrist strap belt clip Sampling Pump Internal integrated with 300 cc min flow rate high setting Protection Password protected calibration settings alarm limits and data GENERAL INFORMATION Multi Gas Monitor Specification continued Intrinsic Safety UL amp cUL Class 1 Division I Group A B C D US amp Canada EEx ia IIC T4 Europe EM Immunity No effect when exposed to 0 43 mW cm2 RF interference 5 watt transmitter at 12 inches Data Storage 20 000 readings 64 hours 5 channels at 1 minute interval in non volatile memory Datalog Interval Programmable 1 3600 sec External Alarm Optional plug in pen size vibration alarm or earphone Communication Upload data to PC and Download monitor setup from PC through RS 232 link to serial port on PC Temperature 200 to 45 C 49 to 113 F Humidity 0 to 95 relative humidity non condensing Configuration 2 3 4 and 5 gas with without pump and with without datalogging OPERATION OF MULTIRAE PLUS 2 OPERATION OF MULTI
91. prolong the operating life of the sensors To install the water trap filter simply slide the Tygon tubing onto the ribbed inlet port on the monitor A male Luer connector fits to the female Luer of the filter To remove the filter disconnect the Luer connector The water filter should not be used for normal calibration and operation with vapors that are especially reactive or adsorb easily to surfaces Such vapors include Cl PH NH3 HCN and semi volatile organic compounds like diesel fuel and jet fuels For these compounds the high pump speed setting should be used see Section 2 8 It is also desirable to use inert connecting and sampling tubing such as Teflon instead of Tygon and to make connections as short as possible OPERATION OF ACCESSORIES 3 4 Remote Sampling Probe or Tygon Tubing An optional 6 foot Teflon remote sampling probe with a telescoping handle or a 15 foot Tygon tubing are handy accessories for users to probe areas which are difficult to reach such as ceilings storage tanks underground man holes etc Connect the male Luer connector at the end of the remote sampling probe or the Tygon tubing to the female Luer connector on the water trap filter The remote sampling probe or the Tygon tubing is ready for operation Teflon remote sampling tubing should be used for reactive gases such as Cl PH3 NH3 HCN and for semi volatile organic compounds like gasoline and jet fuels A few feet of Tygon tubing can comp
92. r When biased toxic sensor is plugged into the Tox1 position it is necessary to turn the dip switch or move the jumper to the ON position to enable the bias voltage During power on sequence the microprocessor will check the sensor ID and the bias voltage If the NO or NH sensor is plugged into the wrong toxic sensor socket or the bias voltage is not switched on an error message will be displayed 7 6 MAINTENANCE 7 3 PID Sensor Cleaning Replacement This section only applies to a monitor that is equipped with the PID detector option During the course of normal operation a film of gas vapor may build up inside the PID sensor module and the UV lamp The rate at which the film develops depends on the type and concentration of the vapors being sampled As a guide it is recommended to clean the PID sensor module and lamp only when the PID is malfunctioning The sensor module is made of several components and is attached to the lamp housing unit as shown in Figure 7 2 If the lamp does not turn on the monitor will display an error message of Lamp to indicate cleaning or replacing of the lamp is required Periodic cleaning of the lamp window will also remove film deposits and restore lamp sensitivity Care must be exercised when cleaning the window surface so that it will not be damaged 1 Turn off power of Multi gas Monitor 2 Refer to Figure 7 1 open the monitor cover by unscrewing the two case screws from the bo
93. r Calibration This procedure determines the zero point of the sensor calibration curve To perform fresh air calibration the calibration adapter and a bottle of fresh air optional are required The fresh air is clean dry air with 20 9 oxygen concentration and without any organic toxic or combustible gases or impurities If such an air bottle is not available any clean ambient air without detectable contaminant can also be used A charcoal filter should be used if one is not sure of the ambient air s purity 1 Calibrate Monitor is the first menu item in Table 4 1 Press Y to perform calibration The first sub menu shows Fresh Air Calibration 2 If the fresh air bottle is available twist on the calibration adapter over the inlet port of the MultiRAE PLUS Monitor and connect the other end of the tube to the fresh gas bottle If the fresh air bottle is not available simply leave the monitor in an area free of any detectable vapor 3 Press the Y key to start fresh air calibration of the monitor The display shows zero in progress followed by the name of each sensor and the message zeroed The display should show a reading of 20 9 for the oxygen sensor and 0 0 or a very small number for all other sensors 4 After about a 5 second pause the display will show the message Zero Cal Done and move to the next sub menu Multiple Sensor Calibrat
94. rade category This category includes upgrading the datalog feature of the MultiRAE Plus monitor and upgrading the firmware in the MultiRAE Plus monitor There is a tool bar beneath the menu bar The frequently used functions are represented in this tool bar in the form of a small icon For example the Receive data function in the Communication sub menu is represented as a small arrow with the letters RECV When the mouse cursor a small arrow is positioned near each icon in the tool bar a short text will also appear at the bottom of the Window to describe the function of this icon This tool bar allows users to invoke a function conveniently by clicking on the icon without going through the sub menus COMPUTER INTERFACE FOR MULTIRAE PLUS 5 4 Setup Communication Port It is necessary to setup the communication port on the ProRAE Suite software so that the MultiRAE PLUS monitor can communicate with the PC correctly Figure 5 4 shows the Setup Port dialog box Choose the appropriate port according to the PC s serial port setup m Please select the serial port COM C COM2 C coma COM4 Figure 5 4 Setup Port Dialog Note In most PC s there are two serial ports Make sure that the serial port selected in the Setup Port dialog box matches the actual serial port connected to the MultiRAE Plus monitor The default serial port for ProRAE Suite is COMI If the incorrect serial port is selected an error message of
95. ramming mode will pause the datalogging operation automatically After exiting programming mode datalogging operation will resume PROGRAMMING OF MULTIRAE 4 1 Programming Mode The MultiRAE PLUS has three user modes text display and programming mode The user can access the programming function only if they are in the programming mode or from text mode with password If the monitor is set to display mode the user cannot enter the programming menu In this case the user mode can be changed only through a PC see Section 5 0 for details on setting up the user mode The programming mode allows users to change the setup in the monitor calibrate the monitor modify the sensor configuration and enter user information etc The programming functions are organized in a three tier menu structure Table 4 1 shows the first tier of the programming menu Each menu item includes several sub menus to perform additional programming functions Appendix A shows a more detailed menu tree structure Table 4 1 Programming Menu Calibrate Monitor Change Alarm Limits View or Change Datalog Change Monitor Setup Change Sensor Configuration PROGRAMMING OF MULTIRAE Security Level There are three levels of security in the MultiRAE PLUS programming mode to provide further protection against unauthorized changes to the monitor alarm settings and other settings The level 2 security allows a user to enter programming mode wit
96. ramming mode the datalogging will resume 2 When entering PC Communication standby mode datalogging will stop Upon exiting the PC communication standby mode datalogging will resume only if datalogging mode was set to automatic mode In either case a new datalog event will be created when the datalogging is resumed OPERATION OF MULTIRAE PLUS 3 OPERATION OF ACCESSORIES The accessories for MultiRAE PLUS include e Battery charger e Alkaline battery adapter e Water trap filter and remote sampling probe e Dilution fitting e Calibration adapter WARNING To reduce the risk of ignition of hazardous atmospheres recharge battery only in area known to be non hazardous Remove and replace battery only in area known to be non hazardous Ne charger les batteries que dans emplacements d sign s non dangereuse 3 1 OPERATION OF ACCESSORIES 3 1 Battery Charging Operation The charging circuit of the MultiRAE PLUS is built into the monitor It only needs a regular AC to 12V DC adapter wall mount transformer to charge the monitor 1 Connect the AC adapter or the optional automotive charging adapter to the DC jack on the MultiRAE PLUS monitor 2 The display will ask whether a discharge cycle see NOTE on next page is required press N key and the charging function will begin The display will show Charging Battery x x V If a key is not pressed within ten seconds the charging will begin
97. s to the instrument click Communication gt Send Config menu item or click the send toolbar icon right arrow with Send letters a message box will appear to remind the user to connect the instrument to the PC through the serial port After making sure that the instrument is connected to the PC click the OK button to start the data transfer After the configuration information is sent successfully a message box will appear to indicate that the sending configuration process is completed Click the OK button to close the message box If the communication is not successful an error message indicating that there is no response from the instrument will appear Check the cable to make sure that the connectors on both ends of the cable are securely seated in the sockets Try to send the information again If the error message still appears after repeated attempts call an authorized service center for help COMPUTER INTERFACE FOR MULTIRAE PLUS 5 5 3 Saving Configuration Data In order to save the configuration information for future use user can click File gt Save or File gt Save As menu item to save the opened configuration data to a file Once the configuration file is saved on disk it can be opened at a later time for further modification or can be sent to the MultiRAE monitor COMPUTER INTERFACE FOR MULTIRAE PLUS 5 5 4 Configuring All Settings A user can use this function to update the entire configuration settings except
98. splay will show No gas flow and abort the calibration 4 11 PROGRAMMING OF MULTIRAE Note the readings should be very close to the span gas values After about 5 seconds pause the display will show the message Span Cal Done Turn Off Gas This completes the multiple sensor calibration procedure and moves to the next sub menu item Turn off the flow of gas Disconnect the calibration adapter from the MultiRAE PLUS Monitor If the sensor failed the calibration the sensor name and an error message failed continue will appear Press the N or MODE key to abort the calibration and move directly to the next sub menu item Press the Y key to continue the next sensor calibration In either case the calibration data for the current sensor is not changed From Step 1 if the N key is pressed the display shows all the sensor names which are selected for multiple sensor calibration with the cursor blinking at the first sensor location TOXI VOC TOX2 Press the Y key to select the sensor and the N key to de select the sensor A previously selected sensor will show an next to the sensor name A PROGRAMMING OF MULTIRAE previously de selected sensor will not show an next to the sensor name 7 Press the MODE key momentarily to move from one sensor location to the next one Repeat Step 7 until all of the sensors which need to be calibrated during multiple sensor c
99. st digit use the Y or N key to change the digit value and press the MODE key momentarily to advance to the next digit The flashing digit will move on to next digit to its right Repeat this process until all 4 digits of the new factor are entered Press and hold the MODE key for 1 second to exit data entry mode If there is any change to the existing value the display shows Save Press the Y key to accept the new value and exit the gas selection sub menu Press the N key to discard the changes PROGRAMMING OF MULTIRAE 8 If the VOC sensor is installed and enabled the display will show TOX1 VOC TOX2 VOC Gas isobutylene Otherwise the message No VOC installed will be displayed and move to the next sub menu 9 If the user does not want to change the VOC measurement gas press Y key to accept the current gas and go to Step 12 10 If the user wants to modify the VOC measurement gas press N key first then use Y or N key to scroll through a list of gas names until the desired gas name appears in the LCD display then press MODE key to select the new gas name 11 The display shows Save To confirm the new gas press the Y key to accept the change Press the N key or the MODE key to discard the change and move to the next step 12 Display shows isobutylene VOCFactor 1 00 PROGRAMMING OF MULTIRAE where 1 00 is the calculated correction factor
100. t Reference E enms RIRE SEE C CG Microsoft Visual C 5 0 CR Eind QA Microsoft Works for Windows Ss ee Odbe GS Online Services ZEA Bun QA RapidComm Voice Lea gp Shut Down QA StartUp Stat O Exploring C lt uS Robotics Connections Z gt Open Office Document a Prearams SAN Documents vy v vB vvvBdvvvvvyvyvyv vv vv vv vy Windows95 3 05 PM Figure 5 2 Start Menu COMPUTER INTERFACE FOR MULTIRAE PLUS 5 2 Connect MultiRAE PLUS to PC The basic kit of a MultiRAE PLUS datalogging monitor includes a serial interface cable Connect the DB 9 connector side of the cable to the serial port of the PC and connect another side of the cable to the MultiRAE PLUS monitor Turn on the power to the MultiRAE PLUS monitor Press the MODE key several times until the LCD shows Communicate with PC Press the Y key and the display shows Monitor will Pause OK Press Y key to confirm and the display shows Ready to indicate that the MultiRAE PLUS monitor is ready for communication with PC During the communication session the PC will directly control the MultiRAE PLUS monitor through the serial link There is no need for users to press any key on the MultiRAE PLUS monitor during the communication session If no data transfer has occurred within one minute the MultiRAE PLUS monitor will return to instantaneous
101. te the correct STEL and TWA data for datalogging report see Section 5 9 PROGRAMMING OF MULTIRAE 4 6 5 View Datalog This function allows the user to review all the data that is stored in the non volatile data memory 1 View Datalog is the fifth sub menu item in Table 4 5 Press the Y key and the LCD display shows the first event number and start date and time of the event TOX1 VOC TOX2 Event 1 8 3 96 8 20 Press Y key to review data of the first event The LCD display shows the stored data of each sensor and the time stamp 1 0 0 0 2 8 20 20 5 Press the Y or N key to move forward or backward to view other data of this event When reaching the end or the beginning of the event the message Start of data or End of data will appear Press MODE key to exit the current event Press N key at Step 2 to see next event If there is no more event the message no more event quit will appear Press N key to go back to the first event or press Y key to exit and move to the next sub menu PROGRAMMING OF MULTIRAE 4 6 6 Enable Disable Datalog The user can choose to enable or disable the datalogging function on each individual sensor This allows users to selectively log certain sensor readings of interest 1 Enable Disable Datalog is the sixth sub menu item in Table 4 5 Press Y key The display shows all the installed sensor in the monitor
102. ted graph file contains the graph displayed in the right pane COMPUTER INTERFACE FOR MULTIRAE PLUS 5 6 8 Print the Logged Data After viewing the data results the user may print the data to a printer in order to obtain a hard copy of the text or graphic data report First click any place in the right pane to set the focus on that pane then select Print function from the File sub menu or click the Print toolbar button a printer to print the graphic or text data A printer setup dialog box will appear before the printing starts so that the paper size orientation printer type etc can be configured correctly COMPUTER INTERFACE FOR MULTIRAE PLUS 5 7 Upgrade the Datalog Option To upgrade the datalog option open the ProRAE Suite software Do not open any configuration file or data file so the ProRAE Suite software has no client window open as shown in Figure 5 16 Enab e the lainey capati ol Chey intranet Figure 5 16 Main Window of ProRAE Suite Click Option gt Enable Datalog menu item a message box will appear to remind the user to connect the instrument to the PC through the serial port After making sure that the MultiRAE PLUS monitor is connected to the PC click the OK button to start After the ProRAE Suite software made successful contact to the instrument connected to the PC a dialog box is displayed as shown on Figure 5 17 COMPUTER INTERFACE FOR MULTIRAE PLUS Enable Datalog oi N
103. tery under the best condition As the battery becomes older or is subject to adverse conditions such as cold ambient temperature the battery capacity may be reduced significantly Li ion batteries do not have a memory effect and tend provide longer run time even at the same mAh rating OPERATION OF ACCESSORIES 3 2 Alkaline Battery Adapter An alkaline battery adapter is supplied with each MultiRAE PLUS kit It accepts four AA size alkaline batteries and can be used in place of the Li ion or NiCd battery pack to provide approximately 12 14 hours of operation The adapter is intended to be used in emergency situations when there is no time to charge the rechargeable batteries Figure 3 1 Alkaline Battery Adapter To install the adapter remove the cover of the monitor Unplug the Li ion or NiCd battery pack from the battery connector and plug the alkaline battery adapter into the battery connector The internal charging circuit will automatically detect the alkaline battery adapter and prevent charging of the battery Note The AA Alkaline battery adapter supplied by RAE Systems Inc is intrinsically safe 3 4 OPERATION OF ACCESSORIES 3 3 Water Trap Filter The water trap filter is made of PTFE Teflon membrane with a 0 2 micron pore size to prevent liquid water from being sucked into the sensor manifold which would cause extensive damage to the monitor It will also prevent any dust from entering the monitor and will
104. tion calibration or datalog review only in area known to be non hazardous OPERATION OF MULTIRAE PLUS 2 6 Back Light The LCD display is equipped with an LED back light to assist in reading the display under poor lighting conditions This back light can be turned on manually by pressing and holding the N key for one second in normal operation The back light can be turned off by pressing N a second time If the N key is not pressed the back light will be turned off automatically after a pre programmed time out period to save power In automatic mode the ambient light is sensed and the back light will be turned on automatically if the ambient light is below a threshold level The back light will be turned off automatically when the ambient light exceeds the threshold level See Chapter 4 or 5 for details on how to set back light mode and time out period from the monitor or from PC See Chapter 8 for details on how to set the ambient light threshold level Note The LED back light consumes a higher amount of energy from the battery and shortens the operating time of the monitor by 20 30 OPERATION OF MULTIRAE PLUS 2 7 Preset Alarm Limits and Calibration The MultiRAE PLUS Multi gas Monitor is factory calibrated with standard calibration gas and is programmed with default alarm limits as listed below refer to Chapter 4 or Chapter 5 for programming procedures if new calibration or alarm limits is required
105. ttom of the monitor case Disconnect the battery pack 3 Refer to Figure 7 2 carefully unscrew four No 2 screws that hold down the gas piping plate to the analog PCB and sensors Remove the gas piping plate MAINTENANCE Remove the shielding cap for the PID sensor Gently pull out the PID sensor Note the sensor is made of Teflon and stainless steel material Dip the entire PID sensor into GC grade methanol It is highly recommended that an ultrasound bath to be used to clean the sensor for at least 3 minutes Then dry the sensor thoroughly If the lamp is operational use a cotton swab to clean the flat window surface with GC grade methanol If the lamp does not turn on remove the UV lamp Install a new lamp avoiding contact with the flat window surface Reinstall the PID sensor Install the shielding cap Refer to Figure 7 2 install the gas piping plate and tighten the four screws to hold down the sensors Re connect the battery pack Install the monitor cover 7 8 MAINTENANCE 7 4 PID Lamp Care The UV lamp is made of a glass envelope and a UV window on one end of the envelope The inside of the lamp is filled with low pressure gases To turn on the lamp a high voltage electric field is applied from the outside of the glass envelope The molecules inside the lamp are ionized and produce a glow discharge to generate the UV light Because this UV lamp does not have an electrode inside the glass envelop
106. up sub menu If misentered the second time the password reverts to its original setting PROGRAMMING OF MULTIRAE 4 7 7 Change Pump Speed There are two speed settings for the pump motor in the MultiRAE PLUS that can be selected from the programming menu low default and high The high setting should be used for long lengths of tubing or when rapid changes in input conditions are expected Low may be selected when the operating conditions are slow to change Low may also be used to prolong pump motor life LEL sensor life and battery run time Note that this screen may not be present for diffusion models or if speed control is not available 1 Change Pump Motor Speed is the eighth sub menu item in Table 4 6 2 Press the Y key the display shows the current pump speed selection Pump Speed Low 3 Press the Y key to accept the currently displayed pump speed and move to the next monitor setup sub menu Press N key to change to the other speed Pump Speed High Press MODE key to exit this sub menu and move to the next monitor setup sub menu PROGRAMMING OF MULTIRAE 4 7 8 Change Averaging Method There are two methods of calculation used in the averaging of the monitor Using this selection can cause the calculation to be performed using an eight hour time weighted average TWA the default or a running average AVG The display indicator for whichever averaging type is selected
107. urn off power of the MultiRAE PLUS 2 Refer to Figure 7 1 open the monitor cover by unscrewing the two captured screws from the bottom of the monitor case Disconnect the battery pack MAINTENANCE Figure 7 2 Sensor Assembly of MultiRAE PLUS Refer to Figure 7 2 carefully unscrew four No 2 screws that hold down the gas piping plate to the analog PCB and sensors Remove the gas piping plate Refer to Figure 7 2 identify the location of a specific toxic sensor and remove the sensor by gently pulling the sensor upward 7 5 MAINTENANCE 5 Plug a new sensor into the empty sensor socket Make sure that black line on the sensor label is lined up with the white marker on the PCB and the sensor pins are aligned with the socket before pushing down the sensor 6 Replace the gas piping plate and tighten the four screws to hold down the sensors Re connect the battery pack Replace the monitor cover 7 Turn on the power of the MultiRAE PLUS The microprocessor will automatically recognize the sensors installed and configure the monitor accordingly Special Bias Voltage for Toxic Sensors The NO and NH toxic sensors require a special 300 mV bias voltage to operate Only the Tox1 sensor position provides such a special bias voltage Therefore the NO or NH toxic sensor must be plugged into the Tox1 sensor socket in MultiRAE PLUS In addition there is a dip switch or pin jumper located on the analog PCB next to the PID senso
108. will show on the LCD display wherever the average is indicated 1 Change Averaging Method is the ninth sub menu item in Table 4 6 Press the Y key the display shows the current average selection Average Type TWA Press the Y key to accept the currently displayed type Press N key to change to the other selection Average Type Running Average and Y to select If there is any change to the existing selection pressing the Y key the display will show Save Then press the Y key to accept or the N key to discard and move to the first setup sub menu PROGRAMMING OF MULTIRAE 4 8 Change Sensor Configuration In the programming mode users may change several sensor related configurations of the MultiRAE PLUS monitor Table 4 7 shows the sub menus for setting various configurations of the sensors Table 4 7 Sensor Configuration Sub Menu Change LEL VOC Gas Selection Enable Disable Sensors Change Dilution Ratio Change PID Lamp Type Before these sub menus are described the term Correction Factor needs to be explained Correction Factor The PID and LEL sensor used in MultiRAE PLUS are broad band sensors i e they respond to a broad range of gases Typically these sensors show a different sensitivity to different gases The correction factor for a specific gas is defined as Sensitivity to a calibration gas Correction Factor er Sensit
109. ws Are You Sure to re confirm whether to reset peak and minimum data 3 Press the Y key again will reset peak and minimum data 4 Press the N or MODE key to exit without resetting the data and move to next datalog sub menu Note STEL and TWA or AVG value will not be affected when peak and minimum values are reset PROGRAMMING OF MULTIRAE 4 6 2 Clear All Data This function will erase all data stored in the non volatile data memory This does not change STEL TWA Peak minimum concentration and run time values which are stored in the other location 1 Clear All Data is the second sub menu item in Table 4 5 2 Press the Y key to clear the data memory Display shows Are You Sure to re confirm the clearing of memory 3 Press the Y key again will erase all the data memory 4 Press the N or MODE key to exit without clearing the data memory and move to next datalog sub menu PROGRAMMING OF MULTIRAE 4 6 3 Change Datalog Period The datalog period can be programmed from 1 to 3 600 seconds 1 hour 1 Change Datalog Period is the third sub menu item in Table 4 5 Press the Y key the display shows New Period 0060 with the left most digit flashing where 0060 is the previously stored datalog period To modify this period starting from the left most digit use the Y or N key to change the digit value and press the MODE key mo
110. xit this display 4 Battery Type and Bias Display For some toxic sensors such as nitric oxide or ammonia sensor a bias voltage of a few hundred millivolts is required for the sensor to function properly In the MultiRAE PLUS monitor the user needs to manually switch on the bias voltage supply located on the analog PCB see Section 7 2 for details This may alternately be a jumper where the jumper position should follow the board marking On or Off For this test to work a nitric oxide or ammonia sensor has to be installed in the toxic 1 socket If the bias voltage is switched to ON position the bias reading should be below 182 otherwise the bias supply may be defective The MultiRAE PLUS monitor can be powered by either a rechargeable Ni Cd battery pack or an alkaline battery adapter This display also shows the type of battery which is installed inside the monitor 5 Show x1 and x10 Range of PID Sensor This diagnostic menu only applies to the monitor which is equipped with a PID detector option The PID sensor output is connected to two amplifiers with two different gains Unity gain and gain of ten Raw outputs of both amplifiers are displayed When zero gas is applied both amplifier output should be between 200 to 500 When a VOC gas is applied both amplifier output should increase 8 6 TROUBLESHOOTING and the amount of increase for the unity gain x1 amplifier should be about 1 10 of the increase for the gain of
111. y to change to the other back light mode Back Light Mode manual turn on Press MODE key to exit this sub menu and move to the first monitor setup sub menu 4 If there is any change to the existing selection pressing the Y key the display will show Save Then press the Y key to accept or the N key to discard and move to the next sub menu PROGRAMMING OF MULTIRAE 4 7 6 Change Password The user can modify the password from the monitor 1 2 The seventh sub menu item in Table 4 6 is Change Password Press the Y key and the display shows the current password Enter new password xxxx with the left most digit flashing Press the Y or N key to cycle through all 10 numerals Press MODE key momentarily to advance to the next digit The flashing digit will move to the next digit to the right Repeat this process until all 4 digits of the new password are entered Press and hold the MODE key for 1 second to exit the data entry mode and move to the next monitor setup sub menu If there is any change to the existing password the display shows Save Press the Y key to accept the new password Press the N key to discard the changes and move to the next sub menu The monitor next asks for this value to be confirmed Confirm New Password 0000 with the left most digit flashing The number must be reentered as before to exit the monitor set

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