Operation - Extech Instruments ExStik DO600 User Manual

Operation

PreparetheElectrode
Theelectrodeisshipped"dry"andrequiresfillingwiththesuppliedelectrolytesolutionbefore
use.Themembraneshouldbeinplaceanddoesnotneedreplacement.Followtheprocedureat
theendofthisguideforfillingthebondedcap.
NOTE:Makesurethattherearenoairbubblesintheelectrodebeforeuse.
PoweringtheExStik®
®
TheExStik
usesfour(4)CR2032LithiumIonBatteries.PresstheON/OFFbuttontoturnthe
meteronoroff.Ifthebatteriesareweak,the'BAT'indicatorappearsontheLCD.Theauto
powerofffeatureshutstheExStik
inactivity.Theautopowerofffeaturemaybetemporarilydisabledforconvenienceorfor
extendedpolarizationtime.
StartupPolarizationPeriod
®
WhentheExStik
ispoweredupforthefirsttime,theelectroderequirespolarization.Inorder
forthistooccurathreeminute(approx.)polarizationperiodmustelapsebeforemeasurements
canbemade.
Whenthemeterisleftpoweredon,aspecialcircuitisincludedinthismeterwhichmaintainsa
verysmallbiasingcurrenttotheelectrodeforaperiodofsevendays.Thiskeepstheelectrode
polarizedandenablestheusertomakeimmediatemeasurementswithoutwaitingforthe
electrodetore‐polarize.
EachtimetheExStik®isturnedon,thepolarizationtimerisresetandthe7‐daypolarization
periodisinitiated.Asmallasteriskatthebottomrightcornerofthedisplayisusedtoindicate
thatthepolarizationtimercircuitisactiveevenwhenthemeterisoff.
Turn‐OnDiagnostics
1. WhenthemeteristurnedONtheLCDdisplays"SELF"and"CAL"whilethemeterrunsa
diagnosticroutine.
2. DuringthistimethemeterisrecallingtheUserCalibrationdata,performingselfdiagnostics
&initializingthecircuitry.
3. Afterthisfunctioniscomplete,themeterproceedstothenormalmeasurementmode.
4. TheDO600shouldbecalibrateddailyformeasurementaccuracy.
®
offautomaticallyafterapproximately10minutesof
3
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DO600-en-GB_V7.4 12/16