Co2meter CM-0001 - Calibration Procedure

SamplingDataLoggerUser’sManual CO2Meter.com
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1%or30%SamplingDataLogger
Calibrationcanbeperformedusingeither100%CO2calibrationgas(typicallynitrogen,argon,etc.),orusinga
freshsourceofair,assumedtobeapproximately400ppm.
NOTE:RefertotheGasLab
®
User’sManualforcompleteinstructions.
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CalibrationProcedure
Tocalibrateyourmeter,followthesesteps:
1. TurnONthemeter.
2. Exposethemetertoambientair(assumedtobeat400ppm)orsupplycalibrationgasbottle/cylinder
(100%nitrogenorargon)withtheappropriatedemandregulator.
3. Wait25secondstocollectasample.Writedownthisvalueasthe“before”value.
4. ClicktheCALIBRATEbuttonafterselectingyourcalibrationgas.
5. Wait25secondsagain.Thistime,themeterwilltakeasampleandusethisdatatoadjustzerovalues.The
displayedmeasurementwillshowthenewcalibrationvalue(0or400ppm,dependingonmethodused).
6. DisconnecttheCalibrationgasandwait25seconds.Alldisplayeddatawillnowbebasedonthenew
calibrationvalue.Repeatthisprocedureifthesensorisstilloperatingoutsideofitsspecifiedrangeorif
readingsvarygreatly.
5%,60%,and100%SamplingDataLogger
ThesemodelsdonotfeatureAutomaticBackgroundCalibration(ABC)algorithmduetotheCO2scalethey
measure.Toensurethehighestaccuracy,werecommendcalibratingtheseunitswithcalibrationgas(Nitrogenfor
ZEROorCO2),closetotheconcentrationbeingmeasured.Alternatively,a100%orambientcalibrationcanbe
performed.
Toperformacalibration,attachtheunittoyourcomputer,poweritwiththewalladapterandeitherexposeitto
atmosphereorsupplyitwithyourcalibrationgas,fedwithademand‐basedregulator.
OpentheGasLab
®
softwareonyourpersonalcomputerandclicktheCO NFIGURESENSORbutton.ClicktheTURN
PUMPONCONTINUOUSLYbuttontoensurecontinuousflow.(Toapplyanychanges,themeterhastobe
restarted).Makesuretoturnthisbackoffaftercalibration.
ZeroorFreshAirCalibration 
Supplygasandselecttheappropriateconcentrationinthescreen.ClicktheCALIBRATEbutton.Thesensorreading
shouldinstantlyreflectthecalibration.
High‐ConcentrationCalibration
WritedowntheoriginalZeroValuebeforeadjustmentforfuturereference.Applythedesiredconcentration
calibrationgas;adjusttheZeroValueinincrementsof10pressingthelargeSAVEbuttonontherightuntiltheunit
displaysthecorrectconcentration.
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