RKI Instruments 72-0290-22 Operator'S Manual Download Page 1

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GX-2012

Operator’s Manual

Part Number: 71-0335

Revision: F

Released: 10/1/18

www.calcert.com

[email protected]

1.800.544.2843

Summary of Contents for 72-0290-22

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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RKI Instruments 72-0290-22, Operator'S Manual

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