1.TurningtheGX-2012ON
Note: This start up sequence assumes the following maintenance mode items
are turned on: LNCH BRK, ID DISP, CL RMNDR, and BP RMNDR
Set to CONFIRM
a.AttachtherubbernozzleorsamplehosetotheGX-2012’s
quickconnectinlettting.
b.Ifahoseisused,attachprobetohose.
c.ToturnontheGX-2012,pressandbrieyholdthePOWER
ENTERbuttonuntilyouhearabeep.TheGX-2012willbegin
itswarmupsequence.Thefollowingscreensmayappear
duringthewarmupsequence:
CALTIMEREMAINING(factorysettoappear)
• Iftheinstrumentifoverdueforcalibration,theGX-2012
displaysCAL.PresstheRESETSILENCEbuttonto
continue.
• Calibrationshouldbeperformedassoonaspossible.
BUMPTIMEREMAINING(doesnotappearwith
factorysetting)
• Iftheinstrumentisoverdueforbumptesting,the
GX-2012displays“tEStB--Limit”.PresstheRESET
SILENCEbuttontocontinue.
• Abumptestshouldbeperformedassoonaspossible.
SENSORFAILURE
• IftheGX-2012experiencesasensorfailureduringstart
up,theLCDwilldisplayFAILandindicatewhichsensor(s)
failed.TocontinueoperationpressandreleaseRESET
SILENCEtoacknowledgethefailure.Gasreadingsfor
thatsensorwillbereplacedby“---”.
• Itisnecessarytoreplacethesensorandrecalibrate
beforetheGX-2012isused.
2.MeasuringModeScreen
a.AfterwarmuptheGX-2012willdisplaythefollowing:CH4
0%LEL,OXY20.9%,CO0ppm,H2S0.0ppm(somereadings
maynotappearifsensorsarenotinstalled).
b.Ifthereadingsarenotdisplayingfreshairvaluesasabove,
youmustperformaFreshAirAdjustment.
QuickReferenceGuideForModelGX-2012
Note: Turn on and adjust the GX-2012 gas monitor in a known fresh air area.