Extech Instruments CO240 Manual de usuario



USERMANUAL

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CarbonDioxideMeter

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ModelCO240

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AdditionalUserManualTranslationsavailableatwww.extech.com

EXTECHINSTRUMENTS

2CO240‐en‐GB_v1.711/16

Introduction

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ThankyouforselectingtheExtechInstrumentsModelCO240.TheCO240measuresCarbon

Dioxide(CO2),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

CO2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CO2,AirTemperature,andRelativehumidityaccurately

MeasuresCO2(0~9,999ppm)usingNDIR(Non‐dispersiveInfraredTechnology)

DualdisplayindicatesRelativeHumidity/AirTemperatureandCO2

CalculatesDewPointandWetBulbTemperature

AdjustableCO2highalarmthresholdwithaudiblebeeper

Tripodmount

USBcableforPCdatastreaming(softwaresupplied)

BatteryorACAdaptorPowered



EXTECHINSTRUMENTS

3CO240‐en‐GB_v1.711/16

MeterDescription

1. Sensors

2. LCDScreen

3. HOLD/UpArrowButton

4. MODE/LeftArrowButton

5. SETButton

6. ACAdaptorjack

7. TripodMount

8. POWER( )Button

9. (Max/Min)/ RightArrowButton

10. UNITButton

11.  DownArrowButton

12. USBPCinterfaceport

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Batterycompartmentonrearofmeter.

EXTECHINSTRUMENTS

4CO240‐en‐GB_v1.711/16

Operation

Poweringthemeter

MomentarilypressthePOWERbuttontopoweronthemeter.HoldthePOWERbuttonfor2

secondstoturnoffthemeter.Duringmeasurement,ifthealarmissounding(audiblebeeper)

pressthePOWERbuttonmomentarilytoturnoffthebeeper.Pressagaintoactivatethebeeper

function.ThealarmbeeperissettoONbydefault.Themetercanbepoweredby6AAA

batteriesorACAdaptor.

Recommendation:Fordatalogging,powertheunitusinganAC/DCadaptorinordertoconserve

batterypower.

AutoPowerOff

TheCO240willautomaticallyturnoffafter20minutesofinactivity.Todisabletheautopower

offfunction:WiththemeterOFF,pressandholdtheHOLDbuttonandthenpressthePOWER

button.TheLCDwillshow“n”,andwillthenreturntonormalmeasurementmode.

Measurements

Whenthemeteristurnedon,aself‐testisimplemented.DuetothenatureoftheNDIRsensor,

ittypicallyrequiresapproximatelytenminutestoobtainstable,accuratereadings.IftheUSB

cableisconnectedtotheCO240,theUSBsymbolwillbeshownontheLCD.

ThetemperatureandrelativehumidityreadingswillalternateonthelowerLCDlinealongwith

theCO2readingonthetopdisplayline.UsetheMODEbuttontoswitchtoDP(DewPoint

Temperature)andWB(WetBulbTemperature)modes(lowerdisplayline).

MaximumandMinimumReadingsMemory

MomentarilypresstheMAX/MINbuttontoreviewthemaximumandminimumreadings

capturedsincethemeterwaspoweredon.Pressingthebuttononcewillshowthemaximum

value.Pressingthebuttonagainwilldisplaytheminimumvalue.Pressingthebuttonathirdtime

willreturnthemetertoitsnormalmodeofoperation.WhileinMAX‐MINmode,pressandhold

theHOLDbuttonfor2secondstoreset(clear)thestoredmaximumandminimumvalues.

SelectingoC/oFunitsofmeasure

PresstheUNITbuttontoselectthedesiredtemperatureunitofmeasure.

Calibration

PressandholdtheSET+UNITbuttonsfor2secondstoentertheself‐calibrationmode.Ensure

thatthereisaslittleCO2presentaspossible.Itisrecommendedthatthisbedoneinoutsideair.

TheLCDwilldisplay“CAL”andwillperforma60‐secondcountdownasitperformsthe

calibration.Areadingof“400”isdisplayedasanormalCO2levelreferencevalueduringthe

calibration.Afterthecalibrationhascompleted,themeterwillreturntoitsnormalmode

operation.

EXTECHINSTRUMENTS

5CO240‐en‐GB_v1.711/16

AutomaticCO2BaselineCalibration(ABC)

TheABCalgorithmcontinuallytracksthesensor’slowestreadingoverafixedtimeintervaland

slowlycorrectsforanylong‐termdrift(ascomparedtotheexpectedfreshairvalueof400ppm).

TheABCperiodis15days,duringwhichtheABCfunctiondefaultisalwayson.

CO2AlarmSetting

PressandholdtheSETbuttonfor2secondstoenterthehighCO2alarmthreshold.Pressthe

HOLDbuttontoincreasethevalue,andtheDownarrowbuttontodecreasethevalue.Pressthe

MODEbuttontoselectthedigittotheleftandpresstheMAX/MINbuttontoselectthedigitto

theright.Oncethedesiredvalueisset,presstheSETbuttonfor2secondstosavethealarm

setting.TheLCDwillreturntoitsnormalmodeofoperation.Themeteralarmlimitdefaultis

1000ppm(OSHA).MomentarilypressthePOWERbuttontotogglethealarmonandoff.

DataStreamingtoPC

TheCO240featuresreal‐timedatastreamingtoaPCusingthesuppliedSW200‐Ssoftware.

WhenthemeterisconnectedtoaPC,theUSBiconwillbevisibleontheLCDdisplay.Please

installtheUSBdriverandsuppliedsoftwarebeforeattemptingtostreamdata.RefertotheHelp

Utilitywithinthesoftwareprogramforfurtherdetails.

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EXTECHINSTRUMENTS

6CO240‐en‐GB_v1.711/16

MaintenanceandTroubleshooting

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BatteryReplacement

WhenthebatteryiconappearsontheLCD,thebatteriesmustbereplaced.

Inadownwardmotion,slidetherearbatterycompartmentcoveroffofthemeterhousing.

Removetheoldbatteriesandreplacewithnewbatteries(allofthesametype)observingcorrect

polarity.Thismeterusessix(6)1.5VAAAbatteries.Pleasereplacethebatterycompartment

coverbeforeattemptingtousethemeter.

Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriate

collectionsites,theretailstorewherethebatterieswerepurchased,orwherever

batteriesaresold.

Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuserisobligatedtotake

end‐of‐lifedevicestoadesignatedcollectionpointforthedisposalofelectricalandelectronic

equipment.

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BatterySafetyReminders

oPleasedisposeofbatteriesresponsibly;observeallrelevantregulations.

oNeverdisposeofbatteriesinafire;batteriesmayexplodeorleak.

oNevermixbatterytypes;installnewbatteriesofthesametype.



Troubleshooting/ErrorMessageDisplays

ErraticReadingsReplacethebatteriesorusetheAC/DCadaptorandcheckagain.

ER1DisplayCO2,TemperatureorHumiditysensorfailureorasensorcommunication

error.Sendforserviceifdisplaypersists.

ER2Display Out‐of‐rangeconditionforCO2,TemperatureorRelativeHumidity.

DetectedreadingexceedsCO2,TemperatureorHumidityrange

specification.Thiserrorisnormalwhenclearingthemaximumand

minimumreadingsintheMAX/MINmode.

“9999”DisplayReadingexceedstheCO2maximummeasurementrangeorthebattery

powerisweak.



EXTECHINSTRUMENTS

7CO240‐en‐GB_v1.711/16

Specifications



Display  DualmultifunctionLCD

CO2measurerange 0to9,999ppm

CO2accuracy  ±(75ppm+5%ofreading)0to2,000ppm

OperatingTemperature0to50°C(32to122°F);0.1°resolution

TemperatureAccuracy±1°C(1.8°F)

OperatingRelativeHumidity0to95%RH(avoidcondensation)

RelativeHumidityAccuracy ±5%ofrdgat25°C(77°F)otherwise±7%RH

DewPointTemperaturerange‐72.9to47°C(‐99.22to118°F);0.1°resolution

WetBulbTemperaturerange‐11to48.2°C(12.2to118.8°F);0.1°resolution

StorageTemperature‐20to50°C(‐4to122°F)

StorageHumidity 0to95%RH(avoidcondensation)

Power   AAAbatteriesx6pcsorACadaptor

Dimensions 211x60x40mm(8.3x2.4x1.6")

Weight  181.4g(6.4oz.)

Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

ISO‐9001Certified

www.extech.com



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