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RKI Instruments GX-2009 Reference guide

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1. Turning the GX-2009 On
a.PressandbrieyholddownthePOWERMODEbutton.The
backlightwillturnonandactivateallLCDsegments.Release
thebuttonwhenyouhearabeep.
i.IfCalC-LIMITisdisplayed,unitispastdueforcalibration.Pressand
releasethePOWERbuttontoconrmandcontinueuse.
ii. IfFAILC-LIMITisdisplayed,unitispastdueforcalibrationandcannotbe
usedwithoutcalibrating.
b.Theinstrumentwillgothroughabriefwarmupshowingdate,
numberofdaystonextcalibration,timeofday,batterypower,
alarmlatchsetting,fullscalevaluesforallchannels,warning
alarmsettingandhighalarmsettingforallchannels,STEL
alarmsetpointforH2SandCOandTWAalarmsetpointfor
H2SandCOchannels.
c.Ifthebatterylevelisloworthebatteryiconisashingandthe
unit’sbuzzersounds,rechargetheGX-2009beforeuse.
2. Measuring Mode Screen
a.Afterwarm-uptheGX-2009willdisplaythecurrentO2,H2S,
COand%LELgasreadings.
b.Ifthereadingsarenotdisplayingfreshairvalues,itis
necessarytoperformaFreshAiradjustment.
3. Performing a Fresh Air Adjustment
a.Findafresh-airenvironmentfreeoftoxicorcombustible
gasesandofnormaloxygencontent(20.9%).
b.PressandholdtheAIRbuttonforaboutthreeseconds.The
displaywillindicateAirCALHOLDAIR.Continuetoholduntil
ADJandRELEASEaredisplayed.ReleasetheAIRbutton.
TheGX-2009willsettofreshairvalues,0%LELCH4,20.9%
O2,0.0ppmH2Sand0ppmCO.
4. Performing a Breath Test
a.PerformingabreathtestquicklyteststheGX-2009oxygen
sensor,audible,visualandvibratoryalarmsforproper
operation.Performingabreathtestisnotasubstitutefor
calibrationorperformingabumptestonallsensors.
b.CuphandsoverO2sensoropeningandgentlyexhaleover
thesensor.
c.Theoxygensensoroutputwilldropbelowthealarmpointof
19.5%andactivatealarms.
d.Ifalarmsaresettolatching,pressthePOWERMODEbutton
toresetalarmsonceoxygenreadingisabove19.5%.
i. Note:YoumayalsoseeslightresponseontheCOgassensorwhen
performingabreathtest.
Quick Reference Guide For Model GX-2009
Turn on and adjust the GX-2009 gas monitor in a known fresh air area.
Quick Reference Guide For Model GX-2009
PN71-0160RKRevP1
RKI Instruments, Inc. 33248 Central Ave, Union City, CA 94587
Phone(510)441-5656•(800)754-5165•www.rkiinstruments.com
5. Sensor Failure
a.IftheGX-2009experiencesasensorfailureduringstartup,the
LCDwillindicateFAILandindicatethesensorthathasfailed.
Example:FAILCOppmSENSOR.Tocontinueoperation
pressandreleasethePOWERMODEbuttontoacknowledge
thefailure.Gasreadingsforthatsensorwillbereplacedby
dashes.
b.Itisnecessarytoreplacesensorandcalibrateassoonas
possible.
6. Display Mode
a.PressandreleasethePOWERMODEbuttontoaccessPEAK
readings.
i. ThiswilldisplaythehighestLEL,COandH2SandlowestO2readings
encounteredwhiletheinstrumenthasbeeninoperation.
ii. ToResetPEAKreadings,pressandholdtheAIRbuttonuntilCLEAR
RELEASEisdisplayed.
b.PressthePOWERMODEbuttonagaintomovetotheSTEL
screen.
i. STELisa15minuteaverageexposureforCOandH2S.
c.PressthePOWERMODEbuttonagaintomovetotheTWA
screen
i. TWAisan8houraverageexposureforCOandH2S.
d.PressthePOWERMODEbuttonagaintodisplaythefullscale
readingsofeachchannel.
e.PressingthePOWERMODEbuttonagainwillreturnyoutothe
normalmeasuringscreen.
7. Resetting Alarms
a.IftheGX-2009alarmsaresetuptolatch,pressandrelease
thePOWERMODEbuttontoresetalarmsoncealarm
conditionhascleared.
b.IftheGX-2009alarmsaresetupforself-resetting,thealarms
willautomaticallyresetoncethealarmconditionhascleared.
8. Turning off the GX-2009
a.PressandholdthePOWERMODEbutton.
b.TURNOFFwillbedisplayedandtheinstrumentwillbeepthree
timesbeforeshuttingdown.
9. Consult the operator’s manual for further
information.
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