User manual

EXTECHINSTRUMENTS
2CO240‐en‐GB_v1.63/15
Introduction
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Thank you for selecting the Extech Instruments Model CO240. The CO240 measures Carbon
Dioxide(CO
2
),AirTemperature,andRelativeHumidity.ItalsocalculatesDewPointTemperature
and Wet Bulb Temperature. The user‐programmable high alarm feature alerts the user when
CO
2
levelrisesabovetheprogrammedlimitandthedatastreamingfeatureallowsreadingstobe
capturedinrealtimebyPC(USB connection). This deviceisshippedfullytestedand calibrated
and, with proper use, will provide years of reliable service. Please visit our website
(www.extech.com) to check for the latest version of this User Guide, Product Updates, and
CustomerSupport.
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Features
 PortablemetermeasuresCO
2
,AirTemperature,andRelativehumidityaccurately
 MeasuresCO
2
(0~9,999ppm)usingNDIR(Non‐dispersiveInfraredTechnology)
 DualdisplayindicatesRelativeHumidity/AirTemperatureandCO
2

 CalculatesDewPointandWetBulbTemperature
 AdjustableCO
2
highalarmthresholdwithaudiblebeeper
 Tripodmount
 USBcableforPCdatastreaming(softwaresupplied)
 BatteryorACAdaptorPowered
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