RKI Instruments GX-2012 Manuale utente

1.TurningtheGX-2012ON

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.AttachtherubbernozzleorsamplehosetotheGX-2012’s

quickconnectinlettting.

b.Ifahoseisused,attachprobetohose.

c.ToturnontheGX-2012,pressandbrieyholdthePOWER

ENTERbuttonuntilyouhearabeep.TheGX-2012willbegin

itswarmupsequence.Thefollowingscreensmayappear

duringthewarmupsequence:

CALTIMEREMAINING(factorysettoappear)

• Iftheinstrumentifoverdueforcalibration,theGX-2012

displaysCAL.PresstheRESETSILENCEbuttonto

continue.

• Calibrationshouldbeperformedassoonaspossible.

BUMPTIMEREMAINING(doesnotappearwith

factorysetting)

• Iftheinstrumentisoverdueforbumptesting,the

GX-2012displays“tEStB--Limit”.PresstheRESET

SILENCEbuttontocontinue.

• Abumptestshouldbeperformedassoonaspossible.

SENSORFAILURE

• IftheGX-2012experiencesasensorfailureduringstart

up,theLCDwilldisplayFAILandindicatewhichsensor(s)

failed.TocontinueoperationpressandreleaseRESET

SILENCEtoacknowledgethefailure.Gasreadingsfor

thatsensorwillbereplacedby“---”.

• Itisnecessarytoreplacethesensorandrecalibrate

beforetheGX-2012isused.

2.MeasuringModeScreen

a.AfterwarmuptheGX-2012willdisplaythefollowing:CH4

0%LEL,OXY20.9%,CO0ppm,H2S0.0ppm(somereadings

maynotappearifsensorsarenotinstalled).

b.Ifthereadingsarenotdisplayingfreshairvaluesasabove,

youmustperformaFreshAirAdjustment.

QuickReferenceGuideForModelGX-2012

Note: Turn on and adjust the GX-2012 gas monitor in a known fresh air area.

3.PerformingaFreshAirAdjustment

a.PerformingaFreshAirAdjustmentwillsettheCH4,CO,and

H2Schannelsto0andtheOXYchannelto20.9%.

b.Taketheinstrumenttoafreshairareawheretheairisfree

oftoxicorcombustiblegasandhasnormaloxygen(20.9%).

c.PressandholdtheAIRbutton.Thedisplaywillpromptyou

tocontinueholdingtheAIRbutton.

d.ThedisplaywillpromptyoutoreleasetheAIRbutton.The

GX-2012willautomaticallysetthefreshairreadingsforall

channels.

e.TheGX-2012isnowreadyforuse.

Note: If fresh air adjustment fails, refer to user’s manual.

4.FlowIntegrityTest

a.Placengeroverendofprobeorrubbertip.TheGX-2012

shouldgointoowfailinafewseconds.

b.PresstheRESETSILENCEbuttontorestartthepump.

c.Iftheinstrumentfailstoindicateowfailure,checkprobe

andhoseconnectionsforleaks.

5.BreathTest(forinstrumentsequippedwith 

 oxygensensor)

a.Ifconnected,removehoseandprobe.

b.Exhaleneartheinletttingoftheunit.Observethatthe

oxygenreadingdropsbelowthealarmsettingof19.5%and

theaudibleandvisualalarmsareactivated.

c.PresstheRESETSILENCEbuttontoresetthealarmsthe

reconnecthoseandprobe.

6.TurningtheGX-2012OFF

 PressandholdthePOWERENTERbuttonuntilTURNOFF

hasdisappearedfromthebottomofthescreen.

TheGX-2012isnowoff.

QuickReferenceGuideForModelGX-2012

PN71-0249RKRev0

RKIInstruments,Inc.33248CentralAve,UnionCity,CA94587

Phone(510)441-5656•(800)754-5165•www.rkiinstruments.com

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