Extech Instruments CO40 User manual



USERGUIDE

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PortableCarbonMonoxide(CO)Meter

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ModelCO40

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EXTECHINSTRUMENTS

2CO40‐en‐GB_v1.312/14

Introduction



ThankyouforselectingtheExtechInstrumentsModelCO40.TheCO40simultaneouslymeasures

COconcentrationandAirTemperature.TheCO40isdesignedusingventedballtechnologyfor

fastresponse(<30seconds)forsensingCOgas.

Theuser‐programmablehighalarmalertstheuseriftheCOlevelrisesabovetheprogrammed

limit.

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.



Features

PortablemetercapableofmeasuringCOandtemperatureaccurately

MeasuresCO(0~999ppm)withalarm(alarmdefault30ppm)

DualdisplayindicatesairtemperatureandCO

AdjustableCOalarmthreshold(0to999ppm)withaudiblebeeper

Electrochemical,ventedballCOsensortechnology

Tripodmount

BatteryorACAdaptorpowered



IMPORTANTSAFETYNOTES

ThisCarbonMonoxideMonitorisintendedforgeneralpurposeAirQualitymonitoringonly,and

hasnotbeencertifiedforusepursuanttoanystateorcitysafetyCarbonMonoxideAlarmor

Monitoringrequirements.

TheCO40CarbonMonoxideMonitorhasnotbeentestedbyanindependentlabtocomplywith

UL2034orIAS6‐96standard.

Itistheresponsibilityofthecustomertoobtainandapplycurrentlocal,state,andnational

regulationswithregardtoCOalarms,monitoringandtesting.



EXTECHINSTRUMENTS

3CO40‐en‐GB_v1.312/14

MeterDescription

1. Sensors

2. LCDDisplayarea

3. HOLDButton/Uparrowbutton

4. MODE/LeftArrowButton

5. SETButton

6. ACadaptorjack

7. TripodMount

8. POWER( )Button

9. (MaxReading)/ RightArrowButton

10. UNITButton

11.  DownArrowButton

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Note:Batterycompartmentonrear

EXTECHINSTRUMENTS

4CO40‐en‐GB_v1.312/14

Operation

Poweringthemeter

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

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

buttonmomentarilytoturnoffthebeeper.Pressagaintoactivatethebeeper.Thealarmbeeper

issettoONbydefault.Themetercanbepoweredby4AAAbatteriesorACadaptor.

AutoPowerOff

TheCO40willautomaticallyturnoffafter15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performedastheLCDcountsfrom“9999”downto

“0000”andthenentersthenormalmodeofoperationwheremeasurementsaretakenbythe

sensorsanddisplayedontheLCD.TheupperLCDareashowstheCOreadinginppmandthe

lowerLCDareashowstheairtemperaturereadinginoC/oFunitsofmeasure.

SelectingoC/oFunitsofmeasure

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

MaximumReadingMemory

MomentarilypresstheMbuttontoviewthemaximumreadingscapturedsincethemeterwas

poweredon(theMAXiconwillbeappear).PressMbuttonagaintoreturntonormaloperation.

DataHold

MomentarilypresstheHOLDbuttontofreezethedisplayedreadings(theHOLDiconwill

appear).PresstheHOLDbuttonagaintoreturntonormaloperation.

Calibration

PressandholdtheMODEbuttonfor2secondstoentertheself‐calibrationmode.Ensurethat

thereisnoCOpresentwhilecalibrating.TheLCDwilldisplay“CAL”and“ooooo”flashing.Wait

forapproximatelyfifteenseconds,untilthecalibrationiscompleted.“End”appearsonthe

screenwhencalibrationhascompleted.Afterfiveseconds,themeterthenreturnstoitsnormal

measurementmode.

EXTECHINSTRUMENTS

5CO40‐en‐GB_v1.312/14

COHighAlarm

SettingtheAlarmThreshold

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

Thesettingrangeis0to999ppm(defaultis30ppm)

PresstheHOLDbuttontoincreasethevalueandpressthebuttontodecreasethe

value

PresstheMODEbuttontoselectthedigittotheleft

PresstheM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

andtoreturntothenormalmode

Arming/DisarmingtheAlarm

MomentarypressesofthePowerbutton willarm/disarmthealarm(Belliconappearswhen

thealarmisarmed)

Alarmbeeper

Whenthealarmistriggered,theaudiblebeeperwillsound.AmomentarypressofthePower

buttonwillsilencethealarm.

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four(4)1.5VAAAbatteries.Pleasereplacethebatterycompartment

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

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.



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.



EXTECHINSTRUMENTS

6CO40‐en‐GB_v1.312/14

Specifications

DisplayDualMultifunctionLCDdisplaysCOconcentration,AirTemperature

COSensor Ventedball,electrochemicalCOmeasurementdevice

COmeasurementrange0to999ppm

COResponsetime <30seconds

COaccuracy  ±5%ofreadingor±10ppm

COResolution 1ppm

TemperaturesensorThermistor

Temperaturerange  ‐ 10to50°C(14to122°F)

Temperatureaccuracy 0.6°C(±1.2°F)

Temperatureresolution0.1°C(0.1°F)

HighCOAlarm AudiblealertwhenCOlevelrisesaboveprogrammedlimit(user‐

programmablefrom0to999ppm;defaultis30ppm)

MemoryMaximumreading(MAX)HoldandDataHold

Power Four(4)AAAbatteries(withlowbatteryindication)orACAdaptor

OperatingTemperatureandRelativeHumidity0to50°C(32to122°F);10~90%RH

StorageTemperatureandRelativeHumidity‐40to70°C(‐40to158°F);0~95%RH

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

Weight  181.4g(6.4oz.)

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

www.extech.com

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