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TROUBLESHOOTING

8-2

8.1. Diagnostic Mode

To place the monitor in diagnostic mode, first turn the monitor
off. Next push and hold the

[Y/+]

and the

[MODE]

keys for at

least two seconds. After the unit “beeps”, release both keys and
the monitor will turn on in diagnostic mode. The monitor will
display a “Diagnostic mode” message and then start going
through the normal start-up procedure. After the unit starts up,
the standard display will show 1 to 4 numbers with a message
“Raw”. These numbers are the raw sensor readings without
calculation.

Other critical parameters of the monitor are available to be
viewed. They can be reached by pressing the

[MODE]

key

repeatedly until the desired parameters are displayed.

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Summary of Contents for QRAE PLUS PGM-2000

Page 1: ...QRAE PLUS PGM 2000 2020 MULTI GAS MONITOR OPERATION MAINTENANCE MANUAL Document Number 015 4001 001 Revision G 1 December 2002 ...

Page 2: ...015 3052 EEx ia d IIC T3 with Battery Pack P N 015 3053 B Recharge batteries only in non hazardous locations C Do not connect external cable to serial interface jack in hazardous locations D Use RAE Systems Adapter P N 500 0072 for connection to communication port and charging jack only in a non hazardous area ...

Page 3: ... sensor modules for service Never operate this monitor while the top or the cover is removed Remove the top the cover or sensor modules only in an area known to be non hazardous SPECIAL NOTE When the PGM 2000 or PGM 2020 multi gas monitor is taken out from the transport case and is turned on for the first time there may be some residual vapor trapped inside the detector chamber The initial toxic s...

Page 4: ... Calibration 4 8 4 3 2 Multiple Sensor Calibration 4 8 4 3 3 Single Sensor Calibration 4 10 4 3 4 Modify Span Gas Value 4 12 4 3 5 Change LEL Span Gas 4 13 4 3 6 OXY Calibration Type 4 14 4 4 Change Alarm Limits 4 15 4 5 View or Change Datalog 4 17 4 6 Change Monitor Setup 4 18 4 7 Change Sensor Configuration 4 20 4 7 1 Change LEL VOL Sensor Type 4 21 4 7 2 Enable Disable Sensor 4 22 4 7 3 Change ...

Page 5: ...NOTE THE SYMBOL MEANS CAUTION RISK OF DANGER CONSULT OPERATION AND MAINTENANCE MANUAL ...

Page 6: ...c safety Recharge batteries only in non hazardous locations Do not connect external cable to serial interface jack in hazardous locations STATIC HAZARD Clean only with a damp cloth CALIBRATION The calibration of all newly purchased RAE Systems Instruments should be tested by exposing it to known concentration calibration gases before the instrument is put into service for the first time For safety...

Page 7: ...batteries que dans l emplacements désignés non dangereux Connectex pas le cable externe au port parallel dans un environment non dangereux DANGER RISQUE D ORIGINE ELECTROSTATIQUE Nettoyer uniquement avec un chiffon humide LA CALIBRATION La calibration de toute instruments de RAE Systems doivent être testé en exposant l instrument a une concentration de gaz connue par une procédure dietalonnage ava...

Page 8: ......

Page 9: ...al are primarily for the PGM 2000 model The QRAE Plus monitors inorganic toxic gases and oxygen concentrations with electrochemical sensors It monitors combustible gases with a combination catalytic bead and thermal conductivity sensor The QRAE Plus includes Calibration Adapter Quick Reference Guide Operation and Maintenance Manual Training Video Rubber Boot with Belt Clip 10 Water Trap Filters PG...

Page 10: ...p to 16 hours of continuous operation Display Two line 16 character LCD with automatic LED backlight for dim lighting conditions Keypad One operation key two programming keys Direct Readout Up to four instantaneous values sensor name high and low values for all detectors TWA and STEL values for toxic battery voltage and elapsed time Sampling Pump Internal integrated pump with adjustable settings f...

Page 11: ...ery P N 015 3053 CSA Class I Division 1 Group A B C D EM Immunity No effect when exposed to 0 43mW cm2 RF interference 5 watts at 12 Data Storage 16 000 points of non volatile memory up to 67 hours of reading four sensors at one minute intervals Datalog Interval Programmable 1 second to 36 000 second intervals External Alarm Optional plug in pen size vibration alarm External Printer Optional plug ...

Page 12: ...GENERAL INFORMATION 1 4 non condensing ...

Page 13: ...m 1 0 ppm 40 seconds H2S 008 1111 000 0 100 ppm 1 0 ppm 35 seconds SO2 008 1113 000 0 20 ppm 0 1 ppm 35 seconds NO 008 1114 000 0 250 ppm 1 0 ppm 30 seconds NO2 008 1115 000 0 20 ppm 0 1 ppm 25 seconds Cl2 008 1116 000 0 10 ppm 0 1 ppm 60 seconds HCN 008 1117 000 0 100 ppm 1 0 ppm 200 seconds NH3 008 1118 000 0 50 ppm 1 0 ppm 150 seconds PH3 008 1119 000 0 5 ppm 0 1 ppm 60 seconds ...

Page 14: ...nt replacement of external filters may help extend the required calibration interval Sensor Cross sensitivity and Deactivation After calibration all sensors will accurately read the gas for which they were designed and calibrated However all sensors can exhibit interferences or deactivation under more or less extreme conditions or concentrations The user should always be aware of potential interfe...

Page 15: ...onitor Figure 1 Front View of the QRAE PLUS Figure 2 Back View of the QRAE PLUS Communication Port Power Port Gas Exit Window Gas Inlet Buzzer Window Water Trap Filter Mode Key Light Sensor Alarm and Charging LED Liquid Crystal Display LCD Sensor Cover Yes and No Key Pads Battery Pack ...

Page 16: ...an communicate with a PC via the communication port 6 Concentration readings and messages are shown on the LCD 7 Use the MODE key to turn the power ON OFF and cycle through the displays Use the Y and N keys to enter data or respond to queries from the instrument 8 The light sensor will detect ambient light levels and the Display s backlight will activate in low light conditions 9 Alarm and indicat...

Page 17: ...and the keypad on the front panel of the monitor The functions of the three keys during normal operation are summarized in the next page Figure 3 Front Keypad and Display Figure 4 Side Keypad LCD Display Alarm and Charging LEDs Light Sensor MODE and ON OFF Key N Y ...

Page 18: ...instrument Hold for 5 seconds to turn OFF the instrument Choose different displays N Answer No to a question Decrease a number Toggle ON OFF the backlight Y Answer Yes to a question Increase a number Test Alarm Alarm Acknowledgment turns off latched alarm turns on pump or LEL sensor after alarm conditions clear ...

Page 19: ...to see critical data battery voltage or enter the PC communication mode The displays in Basic mode are shown in Figure 5 Figure 5 Displays in Basic Mode 2 Advanced mode shown schematically in Figure 6 displays more information than the Basic mode and allows access to more programming functions The Programming Mode is explained in detail in Chapter 4 Sensor Names Instantaneous Readings Comm with PC...

Page 20: ... installed Appears only if the option is enabled through ProRAE Suite software Figure 6 Displays in Advanced Mode Date Time Run time Temp Min Values Comm with PC Peak Values LEL Gas Name STEL Values Start Stop Datalog TWA Values Print Reading Sensor Names Instantaneous Readings MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE Datalog Mode XXX MODE ...

Page 21: ...cent by volume of oxygen and percent of LEL or percent by volume for combustible gases The readings are updated once per second Advanced mode display 0 0 0 20 9 Basic mode display An OK mark means the unit is in Basic mode and no alarm condition exists 0 0 0 OK 20 9 Both modes A small L means the unit is logging data 0 0 0 L 20 9 2 The Sensor Names are displayed as LEL Lower Explosive Limit combus...

Page 22: ...g is updated once per minute and is shown in the display with a STEL message For the first 14 minutes will be displayed This reading applies to the toxic sensors only 0 0 STEL 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 display with a TWA label This reading applies ...

Page 23: ...on the current date time and temperature The readings are updated at one minute intervals Feb 07 01 11 05 ON 03 50 86 F 10 The Datalog screen shows the current datalog mode If your QRAE PLUS does not have datalogging enabled the Start Datalog screen will not show up Instead the screen will display Datalog Mode Automatic Datalogging can be added to any instrument Contact the Factory to learn how to...

Page 24: ...printing current readings of a location when attached to your QRAE PLUS Contact the Factory for more information on this time saving addition By pressing the Y key the current instantaneous readings of the monitor will be printed out from the serial printer Print Reading 13 The Communicate with PC screen allows the user to send data from the QRAE PLUS to a Personal Computer PC or download configur...

Page 25: ...elow a pre set voltage level 3 3V LEL sensor turns off pump shuts off datalog memory error or datalog memory is full etc WARNING The QRAE Plus portable gas detector has been designed for the detection of oxygen deficiencies flammable gas and toxic vapor levels An alarm condition indicating the presence of one or more of these potentially life threatening hazards should be taken very seriously In t...

Page 26: ...als are disabled while 1 PC communication is in standby mode 2 In calibration mode 3 Viewing data during datalog 4 Printing data to a serial printer WARNING The alarm signals are disabled during PC communication calibration and datalog review or when printing data to the serial printer To reduce the risk of exposure to hazardous atmospheres perform PC communication calibration datalog review or da...

Page 27: ...hen an alarm condition occurs the alarm signals stay on even after the alarm condition is no longer present This is called the latching alarm mode The default mode is to automatically reset the alarm signal when the alarm condition is cleared see Chapter 4 for details on how to set the alarm mode ...

Page 28: ...cond Vibration Sensor name and OVR Move away from the gas Water sucked in unit short circuit or reading out of the maximum range 3 beeps flashes per second Vibration Sensor name and MAX Move away from the gas Excessive sensor negative drifting 1 beep flash per second Vibration Sensor name and NEG Perform a fresh air zero calibration Blocked inlet or pump failure 3 beeps flashes per second Pump Unb...

Page 29: ...non alarm conditions it s possible to test the QRAE PLUS buzzer vibration alarm LED and backlight by pressing Y momentarily The buzzer vibration alarm LED and backlight will activate once to indicate that these alarm signals are functioning correctly ...

Page 30: ...rogrammed time out period to save power In Automatic mode the ambient light is sensed and the backlight will turn on automatically if the ambient light is below a threshold level The backlight will then turn off automatically when the ambient light exceeds the threshold level See Chapter 4 for details on how to set the backlight mode and time out period from either the monitor or from a PC See Cha...

Page 31: ...edures if new calibrations or alarm limits are required Table 5 Factory Calibration and Preset Alarm Limits Gas Cal Gas Balance Units TWA STEL Low High CO 50 Air ppm 35 100 35 200 H2S 10 N2 ppm 10 15 10 20 SO2 5 N2 ppm 2 5 2 10 NO 25 N2 ppm 25 25 25 50 NO2 5 Air ppm 1 1 1 10 Cl2 10 N2 ppm 0 5 1 0 5 5 O2 0 N2 Vol 19 5 23 5 CH4 50 Air LEL 10 20 CH4 20 N2 Vol 10 20 HCN 10 N2 ppm 5 5 5 50 NH3 50 N2 pp...

Page 32: ...stop datalogging automatically when the monitor is turned on or off Manual start and stop datalogging in user mode manually Periodic start and stop datalogging daily based on a preset start and stop time hour and minute Scheduled start and stop datalogging one time per year at a preset start and stop date and time See Chapter 4 for setting up the datalog options If manual datalog mode has been sel...

Page 33: ...OPERATION 2 20 A new datalog event is created when the datalogging is resumed ...

Page 34: ......

Page 35: ...E 500 0036 000 CSA UL approved Alkaline Battery Adapter Water Trap and C Filters 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 l emplacements désignés non dangereux ...

Page 36: ...battery is being fast charged The green color indicates that the battery is fully charged The display will also indicate Fully charged It takes about 8 hours to fully charge the batteries Fully charged The smart charging circuitry in the QRAE PLUS will protect the battery from overcharge or over discharge so removing the charger is not required The battery of the QRAE PLUS monitor will be drained ...

Page 37: ...intended to be used in emergency situations when there is no time to charge the Li ion battery pack Figure 7 Alkaline Battery Adapter The internal charging circuit of QRAE PLUS will automatically detect the alkaline battery adapter and prevent the charging of alkaline batteries NOTE The monitor draws power from the battery pack even when the power is turned off It is very important to disconnect t...

Page 38: ...together to prolong the operating life of the sensors and pump Either or both filters should be changed if they change color become clogged with particulates or if liquid water has been sucked in To install the water trap filter twist the threaded end tightly into the Luer connector on the inlet probe Install the C filter into its plastic housing and twist the threaded end tightly into the Luer co...

Page 39: ...ovides intuitive end user operation The display shows the menu options and the keypad is used for menu selection and data entry Note The real time monitoring of gas concentrations 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 programming mode pauses the ...

Page 40: ...e Factory default password is 0000 Level 0 security does not require a password but offers only limited access to the programming menus In Basic mode calibration is available but modification of the other monitor settings is limited Refer to Appendix A for the detailed accessibility to the programming functions The programming menus allow you to change the setup of the monitor calibrate the monito...

Page 41: ...l 1 after holding down the two keys for three seconds the display will show Enter Password 0000 with the left most digit flashing Starting from this flashing digit the user should enter a password using the Y and N keys To exit the programming mode and return to the normal operation press the MODE key at any of the first tier menu displays Note 1 Prior to factory shipment the QRAE PLUS monitor was...

Page 42: ...ogramming mode as summarized below Table 6 Key Functions in Programming Menu MODE Exit one tier of the menus when pressed momentarily or exit data entry mode when pressed and held for 1 second Y Increase an alphanumerical value for data entry Answer yes N Decrease an alphanumerical value for data entry Answer no ...

Page 43: ...e QRAE PLUS monitor This is a two point calibration process using fresh air and the standard reference gas First fresh air containing 20 9 oxygen and no detectable toxic or combustible gases is used to set the zero point for each sensor and span the oxygen 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 know...

Page 44: ...he gas cylinder using a demand flow regulator Calibration through such a regulator will produce similar results to the open tube methods but special corrosion resistant demand flow regulators are recommended for reactive gases such as Cl2 and H2S The monitor can also be calibrated from a gas sample bag Tedlar bag or directly from a cylinder through a fixed flow regulator with a flow rate between 0...

Page 45: ...d 60 second calibration time some newer versions automatically apply the full calibration time After completing the zero calibration expose the unit to the gas for the pre exposure time listed below if a 60 second countdown time is programmed in the unit If the firmware has the full calibration time programmed in the sensors must be calibrated in the Single Sensor mode to take advantage of this fe...

Page 46: ... also be used A charcoal filter should be used if one is not sure of the ambient air s purity After pressing the Y key at Calibrate Monitor the Fresh Air Calibration screen will appear Press Y to perform zero calibration When the zero calibration is successful 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 3 2 Multiple Sensor ...

Page 47: ...r each gas Note The readings should be very close to the span gas values 3 After showing the concentrations of the calibration gases the display will show Span Cal Done Turn Off Gas Follow the instructions on the LCD and the multiple sensor calibration is finished 4 From Step 1 if the N key is pressed the display shows all the sensor names selected for multiple sensor calibration with the cursor b...

Page 48: ...oid erroneous calibration due to cross sensitivity For example some organic gases are known to cause a response on the CO sensor and H2S responds on the NH3 sensor In general it is recommended to calibrate the CO H2S and combustible and oxygen sensors with a cylinder of mixed gas using the multiple sensor calibration and to calibrate other toxic gas sensors with a separate cylinder of toxic gas us...

Page 49: ...display shows Apply Oxygen Y 0 N 19 5 c If the oxygen calibration type is 2 point calibration that is 20 9 air and 0 99 9 N2 calibration the display shows Apply Oxygen Y 0 d If the Y key is pressed the display shows Apply 0 oxygen turn on the flow of the 99 9 nitrogen or other inert gas After a count down on the calibration timer the display shows O2 cal ed Reading 0 e Press the N key for the 19 5...

Page 50: ...e previously stored span gas value and move to the next calibration sub menu 2 Starting from the left most digit of the span gas value use the Y or N key to change the digit value and press the MODE key momentarily to advance to next digit the cursor will move one digit to the right Repeat this process until all span gas values are entered Press and hold the MODE for one second to exit and choose ...

Page 51: ...If the combination LEL VOL sensor is installed and the sensor is set to LEL mode the display shows LEL span Methane Otherwise the message No LEL selected will appear 3 If the user does not want to change the LEL span gas press the Y key to accept the current selection and exit this sub menu 4 If the user wants to select a different LEL span gas press the N key Then use the Y or N key to scroll thr...

Page 52: ...arm limit for warning of oxygen depletion Only the 19 5 calibration point can be modified from 19 0 to 20 0 as described in Section 4 3 4 For more details see Section 4 3 3 for oxygen calibration and Section 4 3 4 for span value modification When the display shows OXY Calibration Type answer the question on the LCD will get the desired calibration type 1 OXY Calibration Type is the next sub menu i...

Page 53: ... 1 The sub menu items allow the user to change the alarm limits high low STEL or average Note The average type can be set to either Running Average or Time Weight Average TWA under the Change Averaging Method sub menu of the Change Monitor Setup menu see Table 10 Press the N key to cycle through the sub menus Press the Y key to enter a sub menu and the display will show HIGH LOW STEL TWA or AVG wi...

Page 54: ...larm 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 3 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...

Page 55: ...reading in the datalog period will be stored Note The QRAE PLUS monitor generates one concentration reading every second If the datalog period is 900 second 15 minute and the data type is average the QRAE PLUS will calculate the average of 900 readings and store it to the memory every 15 minutes 4 Enable Disable Datalog will activate or suspend the datalog function The asterisk next to the sensor ...

Page 56: ...information that will be stored into the datalog with the concentration readings an 8 digit alphanumeric character 2 User ID The user information that will be stored into the datalog with the concentration readings an 8 digit alphanumeric character 3 Alarm Mode determines whether the alarm will latch or automatically reset after an alarm situation occurs 4 User Mode Basic or Advanced Mode controls...

Page 57: ... increases the battery run time by 10 and increases the lifetime of the LEL sensor Setting the pump speed to high see Section 4 7 offers quicker response time A high pump speed is required to measure reactive and slowly responding gases such as Cl2 PH3 NH3 and HCN 9 Averaging Method TWA Time Weighted Average default or AVG a running Average These two averaging methods are alternate ways to evaluat...

Page 58: ...E Plus responds to a broad range of gases having different sensitivities A correction factor can be multiplied by the apparent reading to give the true gas concentration True Concentration Correction Factor x Monitor Reading Correction factors allow measurement of a specific gas while using a different gas for calibration The QRAE PLUS stores several different correction factors for the LEL sensor...

Page 59: ... to measure combustible gases by percentage of the Lower Explosive Limit LEL or it can be set up to measure combustible gases in percent by volume VOL levels up to 100 It can also be set to switch automatically from LEL to VOL when combustible gases go beyond the lower explosive range This auto ranging feature only works for methane gas The user can select one of these sensor modes from the first ...

Page 60: ...PROGRAMMING 4 22 CAUTION Auto range should be selected only when the methane is used as the calibration and target gas ...

Page 61: ...enabled sensor is marked with an next to the sensor name The cursor will blink at the first sensor location Press the Y key to enable the sensor or the N key to disable the sensor A previously disabled sensor will show instead of the sensor name CO H2S LEL pick OXY 3 Press the MODE key momentarily to move to the next sensor location Repeat Step 2 until all the appropriate sensors are enabled 4 Pre...

Page 62: ... 1 If a combination LEL VOL sensor is installed pressing the Y key will cause the display to show LEL Gas Methane Otherwise the message No LEL installed will be displayed and you will return to the first sub menu 2 If the user does not want to change the LEL measurement gas press the Y key to accept the current gas and skip to Step 5 3 To modify the LEL measurement gas press the N key first then u...

Page 63: ...t 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 t...

Page 64: ...f menus press the MODE key once The display will return to the instantaneous readings of normal operation 2 To exit programming mode from the second tier of menus press the MODE key twice 3 To re enter programming mode press and hold the N and MODE for 3 5 seconds as described in Section 4 1 ...

Page 65: ......

Page 66: ...ter Interface Every QRAE PLUS that is ordered with datalogging enabled additionally includes a ProRAE Suite software package and a serial computer interface cable Please refer to the ProRAE Suite Manual for installation instructions ...

Page 67: ......

Page 68: ...ensor is combined with a catalytic gas sensor to measure combustible gases Several different types of toxic gas sensors are offered They can be plugged into the two toxic sensor sockets and are interchangeable Figure 10 Block Diagram of QRAE PLUS Monitor Micro processor LCD Display Keypad Serial Port Battery TOX2 LEL VOL OXY Pump Light Sensor Buzzer Charger TOX1 Air Inlet ...

Page 69: ...n 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 is used to display the readings The user interacts with the monitor through the three keys on the front and right side keypads For portability a rechargeable Li Ion or an alkaline battery pack powers the monitor NOTE The monitor draws powe...

Page 70: ...M 015 2001 000 Communication Jack 015 3033 000 Gas Input 015 2007 000 015 2016 000 Power Jack 015 3032 000 TOX2 SENSOR H2S Sensor 008 1111 001 TOX1 SENSOR CO Sensor 008 1112 001 SENSOR COVER 015 3036 000 Including Gas plate 015 2003 000 Gas plate cover 015 2004 000 Gas plate foam 015 2009 000 Screws X4 015 2015 000 O rings 430 0112 000 430 0115 000 Sensor Bias Switch 420 0010 000 ANALOG SECTION 01...

Page 71: ...ing the water trap filter frequently as described in Chapter 3 the unit will provide a longer period of service The possible maintenance replacement items are Water trap filter Battery Sensors Sampling pump AC DC adapter RAE 500 0036 000 CSA UL approved Refer to Table 2 Figure 11 for assembly and part number information when ordering new components Cleaning Use only a cloth dampened with water to ...

Page 72: ...that tighten the housing top are under the unit refer to Figure 11 Remove the housing top only when changing pump is necessary Before closing the housing top do not forget to reconnect the tubing and the buzzer wire A pair of needle nose pliers is helpful to reconnect the tubing and wire 6 Identify the location of a specific sensor and pay attention to the sensor pin orientation when removing and ...

Page 73: ......

Page 74: ... diagnostic mode and using the troubleshooting table in section 8 2 the user can narrow problems down to one or two areas and often correct the problem without having to return the monitor for repair WARNING The diagnostic mode allows the user to set several low level parameters that are critical to monitor operation Extra care should be taken when setting these low level parameters If the user is...

Page 75: ...n diagnostic mode The monitor will display a Diagnostic mode message and then start going through the normal start up procedure After the unit starts up the standard display will show 1 to 4 numbers with a message Raw These numbers are the raw sensor readings without calculation Other critical parameters of the monitor are available to be viewed They can be reached by pressing the MODE key repeate...

Page 76: ...aw count MODE Adjust LCD contrast MODE Adjust Buzzer Frequency MODE Show LEL or VOL sensor raw readings MODE Show date clock battery voltage and temperature MODE Show LEL OXY sensor expiration date MODE Show Tox1 Tox2 sensor expiration date MODE Adjust pump stall threshold MODE Show serial number MODE Show battery duration time MODE Communicate with PC ...

Page 77: ...ther 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 3 Show Battery and Charging Raw Count The battery voltage charge input sampling and charging current in ...

Page 78: ...exceeds the expiration date of any sensor the performance of the given sensor can no longer be guaranteed It is strongly recommended that the user replace the sensor immediately to ensure proper and safe operation of the instrument 9 Adjust Pump Stall Threshold This display can be used to set the pump stall threshold The firmware compares the pump s current raw count to the threshold raw count set...

Page 79: ...ase significantly i e more than 3 5 counts then there may be a leak in the gas inlet or the pump might be weak or defective 2 Use the Y or the N key to increase or decrease the stall value until it is the average of the idle and the blocked counts of the maximum xxx That is yyy stall value xxx idle xxx block 2 3 Press the MODE key to exit this display If the threshold value is changed a message Sa...

Page 80: ... path or cylinder pressure Change cal gas or sensor Voltage too high message Battery fuse blown or wrong AC adapter Check battery and adapter Bat message Battery Low Recharge battery High pump noise or no inlet suction Leaky inlet path Defective pump Check inlet connection Replace pump Abnormally low reading Incorrect calibration or calibration error Make sure the span gas value matches the calibr...

Page 81: ...TROUBLESHOOTING 8 8 ...

Page 82: ...û ü ü Change Datalog Clear All Data û û û û ü ü Change Datalog Period û û û û ü ü Select Data Type û û û û ü ü Enable Disable Datalog û û û û ü ü Select memory full type û û û û ü ü Change Monitor Setup Change ID Site User û û û û ü ü Change Alarm Mode û û û û ü ü Change User Mode û ü ü ü ü ü Change Real Time Clock û ü ü ü ü ü Change Backlight Mode û û û û ü ü Change Password û û û û ü ü Change Pu...

Page 83: ...APPENDIX A A 2 ü Function allowed Password required ...

Page 84: ...Change STEL alarm limit Change Average alarm limit Change Datalog Clear All Data Change Datalog Period Select Data Type Enable Disable Datalog Select Memory Full Type Change Monitor Setup 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 Change Display Language Set Temperature Unit...

Page 85: ...humidity and 77 F 25 C The CFs may change at other concentrations but temperature and humidity variations usually have little effect on the sensor response The CFs are for new sensors and may change with age CAUTION The LEL CFs listed in Table 14 should not be confused with CFs for volume measurements using the thermal conductivity TC function of the sensor See Technical Note 153 at www raesystems...

Page 86: ...chloromethane 1 0 13 0 Ethanol 1 7 3 3 Ethene 1 4 2 7 Ethyl acetate 2 2 2 0 Ethylbenzene 2 8 0 8 Ethyl ether 2 3 1 9 Gasoline whole 2 1 1 3 Heptane n 2 4 1 1 Hexane n 2 3 1 1 Hydrogen 1 1 4 0 Isobutane 1 8 1 8 Isobutene 1 5 1 8 Isopropanol 2 6 2 0 Methane 1 0 5 0 Methanol 1 5 6 0 Methyl ethyl ketone 2 6 1 4 Octane n 2 9 1 0 Pentane 2 3 1 5 Propane 1 6 2 1 Propene 1 5 2 0 Toluene 2 6 1 1 Turpentine...

Page 87: ...APPENDIX B B 3 Xylene p 2 8 1 1 Lower Explosion Limit of the gas in volume percent ...

Page 88: ...alifornia 94089 Contact Numbers Fax 408 752 0724 Telephone 408 752 0723 Instrument Sales 877 RAE CUSTOMER 877 723 2878 Tubes Sales 888 RAE TUBE 888 723 8823 Technical Support 888 723 4800 E mail RaeSales raesystems com Tech raesystems com Website www raesystems com ...

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