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156 • Calibrating the GX-2012

GX-2012 Operator’s Manual

7. Press and release the POWER ENTER button to save the span value. The LCD will

indicate that the calibration has ended, then the single calibration menu displays.

8. Disconnect the tubing from the GX-2012’s probe.
9. Repeat steps 3 through 8 for any other sensors you want to calibrate. Make sure you

use an appropriate calibration cylinder for each sensor.

CAUTION:

When calibrating the oxygen channel, verify the concentration of oxygen
listed on the cylinder’s label. For oxygen-free samples (100% nitrogen for
example), set the oxygen zero setting to 0.0%.

10. After the last channel is calibrated, disconnect the calibration tubing from the probe.
11. Use the AIR



and (SHIFT)



buttons to scroll to ESCAPE in the ONE CAL menu.

12. Press and release the POWER ENTER button to exit ONE CAL.
13. With the ONE CAL menu option displayed, press the (SHIFT)



button until the

NORMAL

menu option is displayed.

14. Press and release the POWER ENTER button to return to Measuring Mode.

MAINTENANCE

ONE CAL

www.calcert.com

[email protected]

1.800.544.2843

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Содержание 72-0290-22

Страница 1: ...GX 2012 Operator s Manual Part Number 71 0335 Revision F Released 10 1 18 www calcert com sales calcert com 1 800 544 2843 0 5 10 15 20 25 30...

Страница 2: ...as monitor is essen tial for proper operation and correct readings Please calibrate and maintain this instrument regularly Frequency of calibration depends upon the type of use you have and the sensor...

Страница 3: ...e full extent of our liability and we are not responsible for removal or replacement costs local repair costs transportation costs or contingent expenses incurred without our prior approval THIS WARRA...

Страница 4: ...es 16 Tapered Rubber Nozzle 16 Belt Clip 16 Wrist Strap 16 Sample Hose 10 Inch Probe 16 Optional Accessories 17 Charging Stations 17 Optional Probes 19 Purge Tee Fitting 22 External Dilution Fitting 2...

Страница 5: ...ode 56 Calibration Bump Test Supplies and Equipment 56 Preparing for Calibration or Bump Test 56 Calibrating the GX 2012 57 Bump Testing the GX 2012 63 Chapter 4 Using the GX 2012 in Bar Hole Mode 69...

Страница 6: ...reen On or Off 115 Updating the Bump Test Parameters 116 Updating the Confirmation Beep Setting 117 Updating the DataLog Overwrite Setting 118 Updating the Calibration Interval 118 Updating the Calibr...

Страница 7: ...Parts List 145 Appendix A Calibrating and Bump Testing with a Sample Bag 148 Overview 148 Calibration Bump Test Supplies Equipment 148 Preparing for Calibration or Bump Testing 149 Calibrating the GX...

Страница 8: ...ar Hole Mode for checking of bar holes when searching for underground gas leaks Sample drawing pump with up to 50 foot range Liquid crystal display LCD for complete and understandable information at a...

Страница 9: ...00 ppm or 0 5000 ppm N A N A N A N A Sampling Method Sample Draw Response Time T90 Within 30 Seconds Accuracy 5 of reading or 2 LEL whichever is greater 5 of reading or 2 full scale whichever is great...

Страница 10: ...lly Charged Case High impact Plastic with protective rubber layer RF Shielded Dust and Weather Proof Standard Accessories 10 foot hose 10 inch probe Flexible 4 inch tapered rubber nozzle Optional Acce...

Страница 11: ...port buzzer vibrator batteries pump flow chamber and inlet filter holder Figure 1 Components of the GX 2012 Front Back Inlet Fitting Exhaust Tapered Rubber Nozzle Battery Cover alkaline version Chargi...

Страница 12: ...ow chamber are located on the back of the GX 2012 The inlet filter holder is located on the top of the GX 2012 case Sensors The GX 2012 uses up to five sensors to monitor combustible gas oxygen O2 car...

Страница 13: ...as concentration and displayed on the LCD CO and H2S Sensors The CO and H2S sensors are electrochemical cells that consist of two precious metal electrodes in a dilute acid electrolyte A gas permeable...

Страница 14: ...n infrared IR communications port is located just below the RESET SILENCE button The signal goes through the control button material The data transmitted through the port is in standard IrDA protocol...

Страница 15: ...tation or by placing the battery pack in the charging station WARNING To prevent ignition of a hazardous atmosphere batteries must only be changed or charged in an area known to be nonhazardous Pump A...

Страница 16: ...er is installed Standard Accessories The standard accessories include the tapered rubber nozzle belt clip sample hose and 10 inch probe An optional bar hole probe is also available and is described at...

Страница 17: ...logging accessories are briefly described in Data Logging on page 55 Rechargeable Lithium Ion Battery Pack A rechargeable lithium ion battery pack is available for the GX 2012 A fully charged battery...

Страница 18: ...to the charging station with a jack on the end of a five foot DC output cable The AC adapter will also work for 100 VAC or 220 VAC if an appropriate plug adapter is provided The AC charging station i...

Страница 19: ...specific applications are available for the GX 2012 They include the following 30 inch aluminum probe Figure 7 30 Inch Aluminum Probe This probe is designed for applications where it is necessary to...

Страница 20: ...r holes are drilled through the 30 inch tube s wall near the end and the end is plugged so that debris from the barhole cannot be drawn into the tube The sample is drawn through the drilled holes in t...

Страница 21: ...s probe is designed to be used in a tank or a well that may have water or some other liquid at the bottom As you lower the probe down if it hits water it will float and continue to monitor the area Se...

Страница 22: ...accept a sample hose or probe The fittings are made with brass and nickel plated brass and are appropriate for use with the four standard gases The dilution fitting is normally used when it is necessa...

Страница 23: ...of the GX 2012 start up sequence assumes that the following items in Maintenance Mode are turned on LNCH BRK ID DISP CL RMNDR and BP RMNDR If any of these items is turned off then the corresponding sc...

Страница 24: ...times After this press the RESET SILENCE button until you hear a beep to continue If the unit is due for calibration and CL EXPRD is set to NOT USE then the following screen displays The GX 2012 cann...

Страница 25: ...is due for a bump test and BP EXPRD is set to NOT USE then the following screen displays The GX 2012 cannot be used until a bump test has been performed by selecting BUMP in the Maintenance Mode menu...

Страница 26: ...D Screen displays for a few seconds and then the Station ID Screen displays for a few seconds 8 The Date Time Screen appears for a few seconds This screen displays the current year month day and time...

Страница 27: ...for all channels Alarm setpoint high gas alarm for all channels STEL alarm setpoint for the CO and H2S channels TWA alarm setpoint for the CO and H2S channels NOTE If the combustible channel is facto...

Страница 28: ...de is set to LC bH or LC bH see Updating the Leak Check Bar Hole Mode Setting on page 125 then the user must select Normal Mode during the start up sequence to operate in Normal Mode The standard fact...

Страница 29: ...wn through these screens using the AIR or SHIFT buttons 6 With the Normal Mode Select Screen displayed press and release the POWER ENTER button and continue with the startup sequence as described in t...

Страница 30: ...ss and hold the POWER ENTER button 2 The buzzer will pulse for about three seconds and TURN OFF will be displayed along the bottom of the screen 3 Release the button when TURN OFF disappears Measuring...

Страница 31: ...and Fittings This section describes how to use the 8 meter hose with floating head and the purge tee fitting Using the 8 Meter Hose with Floating Head This probe is designed to be used in a tank or a...

Страница 32: ...ting to the GX 2012 s quick connect inlet fitting 3 Connect the tapered rubber nozzle or the sample hose to the GX 2012 s quick connect inlet fitting 4 If a sample hose is used screw the probe onto th...

Страница 33: ...resent When this happens OVER is displayed below the gas list and the display units to the right of the combustible gas channel change to volume However this protection is not adequate to completely p...

Страница 34: ...10 LEL x 1 56 15 6 LEL pentane present Snap Log Mode The snap logging function in Snap Log Mode allows the user to record data at a specific time and have it saved to the data logger The data is assi...

Страница 35: ...aken The second screen displays what Station ID will be associated with this snap log The third screen displays the year month day and time of the snap log and that you should press the POWER ENTER bu...

Страница 36: ...Snap Logging Screen sequence To return to the Snap Logging Screen sequence without changing the station ID press and release RESET SILENCE 4 To take a snap log of the current gas readings press and r...

Страница 37: ...tration of oxygen rises above the High Alarm level and when the STEL and TWA alarm points are reached for CO and H2S When a failure condition occurs such as a sensor failure low flow or dead battery c...

Страница 38: ...at same rate as alarm indication Vibrator pulses at same rate as alarm indication Low Flow The display indicates FAIL LOW FLOW The Alarm LED s flash Buzzer sounds a double pulsing tone two pulses in...

Страница 39: ...concentration was still above the alarm level when the button was pressed the LEDs continue to flash and the GX 2012 continues to display the current alarm level The gas reading must fall below or ri...

Страница 40: ...n or a decreasing oxygen condition 3 If necessary reset the alarm using the RESET SILENCE button once the alarm condition has been cleared Responding to Over Range Alarms WARNING An over range alarm m...

Страница 41: ...gered the sensor failure alarm 2 Try calibrating the sensor first as described in Calibration Mode on page 56 before replacing it 3 If the sensor failure continues replace the sensor as described in R...

Страница 42: ...points are factory set at 5 0 and 10 0 It is recommended that the volume sensor be installed in a unit that is used to monitor combustible gas during Inert Mode operation since it does not require oxy...

Страница 43: ...readings display STEL and TWA readings H2S and CO only display full scale warning alarm STEL and TWA H2S and CO only values display time in operation display the date and time display remaining log t...

Страница 44: ...g Display Mode and arriving at the HC Range Screen press and release the POWER ENTER button The current setting will appear at the bottom of the LCD 2 Use the AIR or SHIFT button to change the setting...

Страница 45: ...rs If 8 hours have not elapsed since the last time the TWA reading was cleared the average is still calculated over 8 hours The missing time is assigned a 0 value for readings Alarm Points Screen The...

Страница 46: ...IR or SHIFT buttons to scroll through screens showing the different settings 100 40 0 500 100 0 vol LEL ppm ppm CH4 O2 F S CO H2S 10 19 5 25 5 0 LEL ppm ppm CH4 O2 WARNING CO H2S 50 23 5 50 30 0 LEL p...

Страница 47: ...tion time screen displays the time in minutes since the GX 2012 was last turned on The operation time may be continued from the last time the GX 2012 was in operation by using the lunch break option S...

Страница 48: ...rned on and off The table below illustrates how much data logging time is available for the various interval times It assumes that the unit is set up with all 5 sensors and there are no alarm occurren...

Страница 49: ...e Datalog Overwrite Setting on page 118 The bottom line of the screen alternates between LG CLEAR NO DISP and YES ENT To clear the data log 1 With the above screen displayed press and release the POWE...

Страница 50: ...alternates between PUMP OFF NO DISP and YES ENT This feature can be used to conserve battery life if there is a significant period of time until the next gas monitoring task but you do not want to wa...

Страница 51: ...e user ID provides a way to identify the user during a data logging session The user ID is saved to the data logger for that session when you turn off the GX 2012 or change users during operation This...

Страница 52: ...ion ID provides a way to identify the station during a data logging session The station ID is saved to the data logger for that session when you turn off the GX 2012 or change stations during operatio...

Страница 53: ...ave been performed the following screen will appear 3 If snap logs have been performed the following screen will appear This screen indicates the year month day and time that the most recent snap log...

Страница 54: ...umber press and release POWER ENTER Peak Bar Select Screen The Peak Bar Select Screen allows you to turn the peak bar on or off If the function is turned on the peak bar appears along the left side of...

Страница 55: ...ing systems Windows 7 Windows 8 or Windows 10 If your computer has an infrared port then no additional accessories are needed to download data from the GX 2012 If your computer does not have an infrar...

Страница 56: ...with the regulator or valve or damage to the pump will result See Appendix A Calibrating and Bump Testing with a Sample Bag on page 148 for instructions to properly use a gas bag kit To calibrate or...

Страница 57: ...ressing and releasing POWER ENTER to confirm it and move on to the next number To go back a number press and release the RESET SILENCE button The factory set password is the same as the factory set pa...

Страница 58: ...tible gas channel s are calibrated to a gas other than methane use an appropriate multigas cylinder or use single calibration to calibrate the combustible channel s 1 You may only calibrate either the...

Страница 59: ...es screens NOTE The RKI Four Gas Cylinder typically contains 12 O2 by volume Be sure to set the OXY reading to agree with the concentration listed on the cylinder s label not zero 12 Use the AIR or SH...

Страница 60: ...ess and release the POWER ENTER button to return to Measuring Mode Calibrating with the Single Calibration Method This section describes calibration using the Single Calibration method To calibrate us...

Страница 61: ...on page 131 1 While in the calibration menu use the AIR or SHIFT button to navigate to the ONE CAL menu option 2 Press and release the POWER ENTER button to display the single calibration menu The LEL...

Страница 62: ...le calibration menu displays 8 Disconnect the tubing from the probe 9 Repeat steps 3 through 8 for any other sensors you want to calibrate Make sure you use an appropriate calibration cylinder for eac...

Страница 63: ...d number and then pressing and releasing POWER ENTER to confirm it and move on to the next number To go back a number press and release the RESET SILENCE button The factory set password is the same as...

Страница 64: ...e proceeding confirm that the bump test gas value s are the same as the concentration s in the calibration cylinder If they are not adjust the bump test gas value s by entering the AUTO CAL menu item...

Страница 65: ...ump test results and the bump test gas readings with the AIR or SHIFT button To return to the BUMP screen in Calibration Mode press POWER ENTER If one or more sensors fail the bump test see Troublesho...

Страница 66: ...he AIR or SHIFT button You can scroll between the bump test results and the bump test gas readings with the AIR or SHIFT buttons To return to the BUMP screen in Calibration Mode press POWER ENTER Disc...

Страница 67: ...led bump test is the difference between the bump test gas time and the calibration time defined in the BUMP SET menu item in Maintenance Mode At the end of the calibration the instrument displays the...

Страница 68: ...OWER ENTER button Disconnect the tubing from the probe 12 Unscrew the demand flow regulator from the calibration cylinder 13 With the BUMP menu option displayed press the SHIFT button until the NORMAL...

Страница 69: ...on Turning On the GX 2012 Bar Hole Mode WARNING If a CO or H2S sensor is installed these sensors will not be active while the GX 2012 is in Bar Hole Mode WARNING Gas alarms are not active when the GX...

Страница 70: ...ibration and CL EXPRD is set to CONFIRM factory setting then the following screen displays The alarm LED s and buzzer will pulse several times After this press and release the RESET SILENCE button to...

Страница 71: ...PRD is set to CONFIRM factory setting then the following screen displays The alarm LED s and buzzer will pulse several times After this press the RESET SILENCE button until you hear a beep to continue...

Страница 72: ...ed off a WARM UP screen will display before the warm up sequence continues 8 If ID DISP is turned on see page 123 the User ID Screen displays for a few seconds and then the Station ID Screen displays...

Страница 73: ...If the unit is powered by alkaline dry cell batteries a D will appear in front of the V in the lower right corner 11 The display then indicates the following items for about a second each Full scale v...

Страница 74: ...s and release the RESET SILENCE button to acknowledge the failure and continue to Bar Hole Mode 13 The GX 2012 is now operating in Bar Hole Mode The pump is off and the following screen appears The me...

Страница 75: ...turn on when any button is pressed other buttons may initiate an undesired operation sequence See Updating the LCD Back Light Time Setting on page 123 to program backlight duration If BEEP SET is tur...

Страница 76: ...thane reading and the minimum oxygen reading for the sample period will be displayed The peak methane reading will also be visually displayed on the graph along the left side of the screen 7 If a high...

Страница 77: ...n 10 To exit Bar Hole Mode and return to the Mode Select Screen at any time press and hold the SHIFT button for 5 seconds Turning Off the GX 2012 Bar Hole Mode 1 Press and hold the POWER ENTER button...

Страница 78: ...nded operation in this mode will result in shorter battery life than specified in Specifications on page 9 Turning On the GX 2012 Leak Check Mode WARNING If an oxygen or H2S sensor is installed these...

Страница 79: ...n Leak Check Mode All screens in this section do not show the CO channel If CO DISP is turned on for your instrument your screens may appear different 5 With the Leak Check Mode Select Screen displaye...

Страница 80: ...the unit is due for calibration and CL EXPRD is set to NOT USE then the following screen displays The GX 2012 cannot be used until a calibration has been performed either by selecting AUTO CAL or ONE...

Страница 81: ...t is due for a bump test and BP EXPRD is set to NOT USE then the following screen displays The GX 2012 cannot be used until a bump test has been performed by selecting BUMP in the Maintenance Mode men...

Страница 82: ...een displays for a few seconds and then the Station ID Screen displays for a few seconds 9 The Date Time Screen appears for a few seconds This screen displays the current year month date and time U Id...

Страница 83: ...ting which sensor failed displays In the example below the catalytic LEL sensor has failed If the catalytic LEL sensor fails it is not possible to enter Leak Check Mode Press and release the RESET SIL...

Страница 84: ...This is an environment free of toxic or combustible gases and of normal oxygen content 20 9 2 Turn on the unit as described above in Turning On the GX 2012 Leak Check Mode on page 78 3 Press and hold...

Страница 85: ...always detecting combustible gas up to 5000 ppm The display range value is only adjusting what part of the detection range is displayed on the LCD To change the display range value 1 While in Leak Ch...

Страница 86: ...ve 5000 ppm Exceeding 5000 ppm If the combustible gas level exceeds 5000 ppm the GX 2012 will display an overscale condition but will continue displaying the gas reading in LEL Exceeding 100 LEL If th...

Страница 87: ...ing session while viewing the current methane reading To enter Peak Hold Mode 1 Turn the GX 2012 on as described in Turning On the GX 2012 Leak Check Mode on page 78 Select the desired display range I...

Страница 88: ...tton and hold both until you hear a beep The Station ID Select Screen will display and the current station ID will be flashing NOTE If the gas levels reach a warning or alarm condition while in this s...

Страница 89: ...countered will be saved NOTE If the gas concentration exceeds the display range without exceeding 5000 ppm the full scale display range value will be displayed but the actual gas reading at that time...

Страница 90: ...n the upper left corner of Leak Check Mode Operation data to indicate that the snap log was taken during Leak Check Mode Operation This screen indicates the year month day and time that the most recen...

Страница 91: ...M009 2012 2 15 14 18 LEAK CK MODE M010 POWER 50 23 5 50 LEL ppm CH4 O2 BLDNG 1 CO 4500 5000 ppm ppm LEAK CK MODE CH4 VALVE 3 PEAK 0 5000 ppm ppm LEAK CK MODE CH4 VALVE 3 2011 8 31 22 39 M007 35 22 0...

Страница 92: ...data point appears without a peak data point after it it is because a peak data point was not taken You can use the AIR and SHIFT buttons to scroll through the different snap logs The gas readings and...

Страница 93: ...reen on or off update bump test parameters update the confirmation beep setting update the data logger overwrite setting update the calibration interval setting turn the calibration reminder function...

Страница 94: ...ting parameters to exit the screen without saving any changes Using Maintenance Mode WARNING The GX 2012 is not in operation as a gas detector while in Maintenance Mode Although it will respond to gas...

Страница 95: ...ate Screen displays 6 Use the AIR or SHIFT button to move through the menu item screens Updating the Date and Time Settings 1 Use the AIR or SHIFT buttons to display the DATE menu item Press and relea...

Страница 96: ...esh air environment that is free of toxic and combustible gases and of normal oxygen concentration 20 9 2 Use the AIR or SHIFT buttons to navigate to the AIR CAL menu option 3 Press and release the PO...

Страница 97: ...gas other than methane use an appropriate multigas cylinder or use single calibration to calibrate the combustible channel s 1 Perform a fresh air adjust See previous section for instructions 2 Insta...

Страница 98: ...alue you want to adjust 11 Press and release the POWER ENTER button The sensor s calibration gas value will flash 12 If necessary use the AIR and SHIFT buttons to set the correct calibration gas value...

Страница 99: ...e GX 2012 lists the sensor s that failed to calibrate In the example below the OXY and H2S channels failed calibration The other sensors calibrated normally The buzzer and alarm lights activate Press...

Страница 100: ...ents Inc recommends that you use a cylinder that contains a concentration of 10 50 of the full scale value of the target gas For example if you are calibrating the combustible gas channel your calibra...

Страница 101: ...If necessary use the AIR and SHIFT buttons to adjust the reading to match the concentration listed on the calibration cylinder If the reading already matches the concentration listed on the calibratio...

Страница 102: ...w or update these parameters see Updating the Bump Test Parameters on page 116 NOTE If the combustible gas channel s are calibrated to a gas other than methane use an appropriate multigas cylinder If...

Страница 103: ...volume combustible sensor Use the AIR or SHIFT buttons to display the screen for the sensor s you wish to bump test 9 Before proceeding confirm that the bump test gas value s are the same as the conce...

Страница 104: ...between the bump test results and the bump test gas readings with the AIR or SHIFT button To return to the main menu press POWER ENTER If one or more sensors fail the bump test see Troubleshooting on...

Страница 105: ...eadings press the AIR or SHIFT button You can scroll between the bump test results and the bump test gas readings with the AIR or SHIFT button To return to the main menu press POWER ENTER Disconnect t...

Страница 106: ...failed bump test is the difference between the bump test gas time and the calibration time defined in the BUMP SET menu item in Maintenance Mode At the end of the calibration the instrument displays...

Страница 107: ...Mode Turning the Lunch Break Setting On or Off With LNCH BRK set to OFF factory setting the GX 2012 automatically starts new TWA and PEAK reading collection and resets the time in operation at startup...

Страница 108: ...til the alarm condition passes and the POWER ENTER button is pressed With LATCHING set to OFF the GX 2012 automatically resets an alarm when the alarm condition passes 1 Use the AIR or SHIFT buttons t...

Страница 109: ...to flash the unit will continue to vibrate and the buzzer will remain off Once the condition clears press the RESET SILENCE button to clear the alarm indications With ALM SLNC set to OFF you cannot s...

Страница 110: ...to save the setting and return to the main menu Updating the Alarm Point Settings The ALARM P menu item allows you to update one or more warning alarm STEL and TWA for CO and H2S settings the reading...

Страница 111: ...ect a channel The combustible gas channel is shown for example 3 Press the POWER ENTER button to display the warning setting for the combustible channel It will be flashing 4 Use the AIR or SHIFT butt...

Страница 112: ...the bottom line of the display during Normal Operation Make your selection using the AIR or SHIFT buttons and press POWER ENTER when finished The factory setting is L H 9 You may then adjust the warni...

Страница 113: ...ect the H2S channel and press POWER ENTER Adjust the values for the warning and alarm settings using the procedure in step 4 through step 7 When you press POWER ENTER after selecting the alarm value y...

Страница 114: ...factory setting the Clear Data Logger Screen appears in Display Mode and allows the user to clear any logged data When set to OFF the Clear Data Logger Screen does not appear in Display Mode and any...

Страница 115: ...button to display the desired setting 4 Press and release the POWER ENTER button to save the setting and return to the main menu Turning the Pump Off Screen On or Off The POFF DSP menu item is used t...

Страница 116: ...tolerance CAL TIME and AUTO CAL The cursor on the left of the screen shows which setting is associated with the parameter shown at the bottom of the screen Use the AIR or SHIFT buttons to scroll up or...

Страница 117: ...played along the bottom of the screen press and release the POWER ENTER button The value will begin to flash Use the AIR or SHIFT buttons to select a new cal time value The choices are 90 and 120 seco...

Страница 118: ...y the desired setting 3 Press and release the POWER ENTER button to save the setting and return to the main menu Updating the Calibration Interval This CL INTVL setting defines the amount of time betw...

Страница 119: ...quire the user to press the RESET SILENCE button to continue With CL EXPRD set to NOT USE if the unit is due for calibration the GX 2012 will give an indication at start up that calibration is due and...

Страница 120: ...button to display the desired setting 3 Press and release the POWER ENTER button to save the setting and return to the main menu Updating the Bump Test Interval This BP INTVL setting defines the amoun...

Страница 121: ...p Test Expired Action Setting This item defines what indication is given during start up when a bump test is due and BP RMNDR is set to ON With BP EXPRD set to CONFIRM factory setting the GX 2012 will...

Страница 122: ...S or ALL If B CHECK is set to 4 GAS factory setting the calibration dates for only the standard 4 sensors LEL O2 H2S and CO are used to determine if a bump test is due If B CHECK is set to ALL the cal...

Страница 123: ...3 Press and release the POWER ENTER button to save the setting and return to the main menu Updating the LCD Back Light Time Setting The BCK LGHT setting indicates the length of time the LCD illuminat...

Страница 124: ...the AIR or SHIFT button to display the desired setting 3 Press and release the POWER ENTER button to save the setting and return to the main menu Updating the Demand Zero Function The DEMAND Z functi...

Страница 125: ...nd Leak Check Mode when the GX 2012 is turned on With L B MODE set to LC bH you will be prompted to choose between Normal Mode Bar Hole Mode and Leak Check Mode when the GX 2012 is turned on 1 Use the...

Страница 126: ...The screen will indicate the current setting 3 Use the AIR or SHIFT button to display the desired setting 4 Press and release the POWER ENTER button to save the setting and return to the main menu Tur...

Страница 127: ...in Normal Mode With CO DISP set to On the CO channel will be displayed in Leak Check Mode but there will be no CO alarms and the CO channel reading will not be saved to any snap log data taken during...

Страница 128: ...n Turning the Password Function On or Off With PASSWORD set to ON the GX 2012 prompts you for a password when you enter Calibration Mode With PASSWORD set to OFF factory setting no password is require...

Страница 129: ...e password is saved and you return to the main menu Performing a Low Flow Setpoint Adjustment If your instrument repeatedly goes into low flow alarm and you have tried all of the recommendations in th...

Страница 130: ...ow flow setpoint You do not need to adjust anything at the instrument Once the low flow setpoint is set press and release the POWER ENTER button 4 You will return to the FLOW ADJ menu item in Maintena...

Страница 131: ...GX 2012 Symptoms Probable Causes Recommended Action The LCD is blank The unit may have been turned off The alkaline batteries may need to be replaced or the lithium ion battery pack recharged 1 To tur...

Страница 132: ...is on the CO channel replace the charcoal filter 2 Recalibrate the unit 3 If the difficulties continue replace the sensor for the affected channel s and calibrate the affected channel s 4 If the diffi...

Страница 133: ...e sensor for the affected channel s may need replacement 1 Check all calibration tubing for leaks or for any bad connections 2 Make sure the GX 2012 has been properly set up for calibration 3 Change t...

Страница 134: ...ing Alkaline Batteries 1 Turn off the GX 2012 WARNING Do not remove the batteries while the GX 2012 is on 2 Turn the battery cover release knob counterclockwise remove the battery cover and lay it asi...

Страница 135: ...on the bottom of the GX 2012 toward the front of the instrument to release the battery pack Figure 19 Releasing the Battery Pack 3 Slide the battery pack away from the instrument 4 Insert a new batter...

Страница 136: ...argeable batteries or chargers or charging of other rechargeable batteries in the GX 2012 will void the warranty 1 Make sure the GX 2012 is off 2 Confirm that the adapter s DC output cord is plugged i...

Страница 137: ...battery charging station as shown in Figure 23 below so that the metal contacts on the back of the unit come into contact with the metal contacts on the back of the holder in the charging station Whe...

Страница 138: ...be charged using the charging station while it is out of the GX 2012 This is useful if spare battery packs are kept in case the pack in the GX 2012 needs to be charged but the unit must be used immed...

Страница 139: ...AC powered charging station plug the AC adapter into an electrical outlet Figure 24 Connecting the Charging Station s AC Adapter Charge LED AC Powered Charging Station Power Supply Jack AC Power Suppl...

Страница 140: ...the Charging Station s DC Adapter The construction of the charging stations allows them to be chained together but a separate adapter must be used for each charging station One adapter will not opera...

Страница 141: ...osure With this many ppm hours of absorption the H2S filter disk should be replaced after 80 minutes of exposure to 25 ppm H2S This equates to replacing the H2S filter disk after 40 2 minute calibrati...

Страница 142: ...nd tighten the three screws retaining it Replacing a Sensor 1 Verify that the GX 2012 is off 2 Use a screwdriver to remove the three screws holding the belt clip to the back side of the instrument Two...

Страница 143: ...Make sure that the flat side is up and the hollow side is down 9 Place the sensor gasket and filters back into the chamber ensuring that it seals with the sensors and the edge of the chamber 10 Place...

Страница 144: ...ers and or wire mesh disk from the gasket A hydrophobic filter is located on either side of the wire mesh disk 7 Install the new hydrophobic filters and or wire mesh disk making sure a hydrophobic fil...

Страница 145: ...ule Legasic for use with all premier portables without USB cable 47 5084RK 01 USB IrDA adapter assembly Legasic for use with all premier portables with module and USB cable 47 5085RK Cable USB A to US...

Страница 146: ...Oxy H2S CO unit 34 liter aluminum 81 GX03VCO Calibration kit for VOL CH4 LEL Oxy CO unit 58 liter 81 GX03VCO DLV Calibration kit for VOL CH4 LEL OxyCO unit 34 liter steel 81 GX03VHSCO Calibration kit...

Страница 147: ...ulator demand flow type for 34 liter aluminum 58 liter 103 liter calibration cylinders cylinders with internal threads 81 1055RK Regulator demand flow type for 17 liter and 34 liter steel calibration...

Страница 148: ...gulator kit Appendix A describes how to use a sample bag calibration kit to calibrate and bump test the GX 2012 A parts list at the end of this appendix lists spare parts for the calibration kit Calib...

Страница 149: ...e combustible gas channel s are calibrated to a gas other than methane use an appropriate multigas cylinder or use single calibration to calibrate the combustible channel s Preparing for Calibration o...

Страница 150: ...ator or dispensing valve Calibrating the GX 2012 From Measuring Mode enter Calibration Mode by pressing and holding the SHIFT button then pressing the DISPLAY ADJ button and releasing both If the unit...

Страница 151: ...RKI 4 gas calibration cylinder Calibrating with the Auto Calibration Method This section describes calibration using the auto calibration method To calibrate using the single calibration method see Ca...

Страница 152: ...value you want to adjust 7 Press and release the POWER ENTER button The sensor s calibration gas value will flash 8 If necessary use the AIR and SHIFT buttons to set the correct calibration gas value...

Страница 153: ...elease the POWER ENTER button to set the calibration to the programmed values If all channels passed calibration PASS displays along the bottom of the screen then the calibration menu displays If any...

Страница 154: ...he CH4 channel s span is adjusted See Parts List on page 145 for available calibration kits and calibration kit spare parts Calibration cylinders that contain only one target gas may also be used for...

Страница 155: ...nsor you selected The gas reading flashes 5 Connect the tubing from the filled gas bag to the rigid tube on the probe Allow the calibration gas to flow for one minute 6 If necessary use the AIR and SH...

Страница 156: ...nnel verify the concentration of oxygen listed on the cylinder s label For oxygen free samples 100 nitrogen for example set the oxygen zero setting to 0 0 10 After the last channel is calibrated disco...

Страница 157: ...actory set password for Maintenance Mode 2102 You can change the password by entering the PASSWORD menu item in Maintenance Mode See Turning the Password Function On or Off on page 128 If you enter an...

Страница 158: ...or SHIFT buttons to see the volume combustible gas bump test value 11 A bump test may be performed on the standard 4 sensors or on the volume combustible sensor Use the AIR or SHIFT buttons to displa...

Страница 159: ...p test results and the bump test gas readings with the AIR or SHIFT buttons To return to the BUMP screen in Calibration Mode press POWER ENTER If one or more sensors fail the bump test see Troubleshoo...

Страница 160: ...e AIR or SHIFT button You can scroll between the bump test results and the bump test gas readings with the AIR or SHIFT buttons To return to the BUMP screen in Calibration Mode press POWER ENTER Disco...

Страница 161: ...d bump test is the difference between the bump test gas time and the calibration time defined in the BUMP SET menu item in Maintenance Mode At the end of the calibration the instrument displays the re...

Страница 162: ...ntil you press and release the POWER ENTER button Disconnect the tubing from the probe 16 With the BUMP menu option displayed press the SHIFT button until the NORMAL menu option is displayed 17 Press...

Страница 163: ...hreads 81 1051RK 60 Regulator with gauge and knob 6 LPM for 34 liter aluminum 58 liter 103 liter cylinders cylinders with internal threads 81 1126RK Gas bag with clamp and hose barb 9 x 9 2 liter 81 G...

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