Extech Instruments CO220 Bedienungsanleitung

USERGUIDE

CO2MonitorandDatalogger

ModelCO220

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

2 CO220-EU-EN V1.3 07/13

Introduction

CongratulationsonyourpurchaseoftheModelCO220CarbonDioxideMeter.Thismeter

measuresCO2concentration,airtemperature,andrelativehumidity.TheCO200includesa99

MemoryDataloggerforstoringandretrievingreadingswithdateandtimestamping.

Theaudiblealarmsmakethisisanidealinstrumentforindoorairquality(IAQ)diagnostics.

Carbondioxide(CO2)isagaseouscomponentoftheearth’satmosphere.Theconcentrationof

CO2innaturalambientairisapproximately0.04%or400ppm.

Thismeterisshippedfullytestedandcalibratedand,withproperuse,willprovideyearsof

reliableservice.Pleasevisitourwebsite tocheckforthelatestversionofthisUserGuide,

ProductUpdates,andCustomerSupport.

FEATURES

ExtraLargeLCDsimultaneouslydisplaysCO2Level,AirTemperature,&RelativeHumidity

DisplayedCalendarClock.

Six(6)iconsindicateindoorairqualitylevels(350/450/700/1000/1250/5000ppm)

StableNDIRsensorforCO2detection

AutomaticBaselineCalibration(ABC)function

AudiblehighCO2concentrationalarmwithselectablehighalarmthreshold

DewPointandWetBulbtemperaturemeasurements

Descriptions

METER

1. CO2reading

2. RelativeHumidityReading

3. AirTemperatureReading

4. Time/DateDisplay

5. SETbutton

6. ESC–MEMbutton

7. SELECT–RECALLbutton

8. C/F‐%RHbutton

9. CO2button

10. ACadaptorjack

NOTE:CO2,TemperatureandRHsensorsonrearofinstrument

3 CO220-EU-EN V1.3 07/13

DISPLAYSYMBOLDESCRIPTIONS

ppmCO2concentrationunitofmeasure

350ppmto450ppm

450ppmto700ppm

700ppmto1000ppm

1000ppmto2500ppm

2500ppmto5000ppm

5000ppmandabove

AirTempAirTemperature

TWATimeWeightedAverage(8hrs)

STELShort‐TermExposureLimit(15minuteweightedaverage)

IPS%Literspersecondperperson

cfm/pCubicfeetperminuteperperson

WBWetBulbtemperature

DPDewPointtemperature

MAX/MINMaximumorMinimumreading



PUSH‐BUTTONDESCRIPTION

SETEntersetupmode

Saveandconfirmsettings

ESC‐MEMExitsetupandprogrammingpages

Endacalibrationsession

MemoryDatalogger(99points)

SELECT/RECALLSelect/RecallandClearDataloggerMemoryReadings

oC/oF‐%RHTemperature/RelativeHumidityModes/TemperatureUnitchanging

CO2CO2modepagestepping



4 CO220-EU-EN V1.3 07/13

Operation

POWERINGTHEINSTRUMENT

PowertheunitbypluggingtheACadaptorintothemeterand

intoanACsource.ThemeterwillswitchONwithashortbeep.

Pleaseuseanappropriatepowersource:100to240VAC(50‐60Hz).

TheACadaptor’soutputvoltageis7.5to9.0Vanditsoutput

currentis0.5A.Useof3rdpartyACadaptorcandamagethemeter.

TheLCDwilldisplaythecurrentCO2

concentration

,airtemperature,

relativehumidity,date,andtime(dateandtimetoggleevery10

seconds).Sixfacialiconsindicatetheindoorairqualityleveland

appearonthetop‐tierdisplayarea(seefigureatrightandthe

sectiontitledDisplaySymbolsearlierinthisguideforadditional

details).

CO2MEASUREMENTCONSIDERATIONS

ThemeterstartsmeasuringwhenpoweredONandupdatesreadingsevery6seconds.

Responsetimeis10secondsforCO2and2secondsforRelativeHumidity.

Iftheenvironmentalconditionschange(forexample,alowtohightemperatureswing)please

allow30secondsforCO2readingsand30minutesforRelativeHumidityreadingstostabilize.

NOTE:DonotholdthemeterclosetothemouthoranyothersourceofCO2.

CHANGETHETEMPERATUREUNITS(oC/oF)

Thechangethedisplayedtemperatureunitsofmeasure:

1. PressandholdtheSETbutton

2. WhileholdingtheSETbutton,presstheoC/oFbutton

3. Repeatthesestepstochangetheunitsagain



5 CO220-EU-EN V1.3 07/13

CO2DISPLAYPAGES

PresstheCO2buttontochangetheCO2displaypageonthetop‐tierLCDarea.Thepagesare

shownbelowforCO2,Max‐Min,TWA,STEL,IPS%andcfm/p.

TIMEWEIGHTEDAVERAGE(TWA)

TWAisTimeWeightedAverage(8hours);themeterupdatesthereadingevery60seconds.If

themeterhasbeenpoweredonforlessthan8hours,theTWAvaluewillbetheweighted

averageofreadingstakensincetheunitwaspoweredON.

SHORT‐TERMEXPOSURELIMIT(STEL)

STEListheShort‐TermExposureLimit(15minutesweightedaverage);themeterupdates

readingsevery60seconds.Ifthemeterhasbeenpoweredonforlessthan15minutes,theSTEL

valueshowstheweightedaverageofreadingtakensincetheunitwaspoweredON.

LPS%

LPS%representsLiterspersecondperperson.

CFM/P

CFM/PrepresentsCubicFeetperMinuteperperson.

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VENT.R(CO2‐baseddemand‐controlledventilation)

CO2‐baseddemand‐controlledventilationreferstothepracticeofusingcarbondioxide

concentrationsasanindicatorforaper‐personventilationrate.Inthiscontext,CO2ismonitored

asabyproductofrespirationratherthanasanindoorcontaminant.Therateatwhichpeople

produceCO2varieswithdietandhealth,aswellaswiththedurationandintensityofphysical

activity.Themoreexertionanactivityentails,themorecarbondioxideisproduced.

CHANGINGTHE2NDTIERDISPLAYCOMBINATION

RepeatedpressesoftheC/F‐RH%buttonstepthroughthefollowingcombinationsof

parameters:

Humidity+AirTemperature

Humidity+WebBulbTemperature

Humidity+DewPointTemperature

MAX/MINMEMORY

ThemeterautomaticallyrecordsMaximumandMinimumreadingswhenthemeterisswitched

ON.Inthenormalmode,presstheCO2buttontoseethemaximumandminimumlevelsofCO2.

WhileviewingtheMaxorMinreading,pressandholdtheSELECT/RECALLbuttontoresetthe

MAXorMINmemory.The“Clr”iconwillappearfor2secondsandthedisplaywillbegintracking

newMAXandMINreadings.

DATALOGGERMEMORY99READINGS

Theusercanstoreupto99CO2readingsinmemoryforlaterrecall.

PresstheESC‐MEMbuttonmomentarilytosavethecurrentCO2

readingwithdate/timestamp.Themeterwillemitashortbeepand

thememorylocationnumberwillreplacetheRHreadingfor2

secondsbeforereturningtotheRHreading.

Oncethememoryisfull,themeterwilloverwritethefirstdatapoint

storedandcontinuetooverwriteexistingreadingsasnewreadings

arestored.

TorecallthedatausetheSELECT/RECALLbutton.Themiddletierdisplaywillshowthe

memorylocationnumberandthetoptierdisplaywillshowthestoredreadinginppm.The

bottomtierdisplayshowsthedate/timestampforthedisplayedreading.

PresstheoC/oF‐RH%buttonmomentarilytoreturntothenormaloperatingmode.

PressandholdtheSELECT/RECALLbuttontoresetthe99pointmemorybank,the“Clr”iconwill

appearfor2secondsbeforereturningtothenormaldisplaymode.

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7 CO220-EU-EN V1.3 07/13

SetupMode



PressandholdtheSETbuttonfor2secondsfromthenormalmodeofoperationtoaccessthe

SETUPmode.

SettingYear

Whenthetwo‐digityearnumberappears,usetheSELECTbuttontoincreasetheyearvalue.

PressSETtomovetothenextsetting

SettingMonth

Whenthetwo‐digitmonthappearsontheLCDpressSELECTtoincreasethemonth.PressSETto

saveandmovetothenextsetting.

SettingDate

Whenthetwo‐digitdateappearsonLCDpressSELECTtoincreasethedate.PressSETbuttonto

saveandmovetothenextsetting.

SettingHours

Whenthetwo‐digithourappearsontheLCDpressSELECTtoincreasethehour.PressSETto

movetothenextsetting.

SettingMinutes

Whenthetwo‐digitminutesvalueappearsontheLCDpressSELECTtoincreasetheminutes.

PressSETtomovetothenextsetting.

SettingSeconds

Whenthetwo‐digitsecondsvalueappearsontheLCDpressSELECTtoincreasetheseconds.

PressSETtomovetothenextsetting(highalarmbelow).

HighCO2Alarm

IntheSETUPmode,afterthedateandtimeareset(asdetailedabove)theA‐oniconwillbe

displayedintheupperdisplay.PresstheSELECTbuttontoswitchthealarmONorOFF.See

diagrambelow.

WhenthealarmisON,presstheSETbuttontosavethesettingandmovetoCO2alarmsetting.

ThemetershowsCO21000ppmasthedefaultalarm.TochangetheHighAlarm,pressthe

SELECTbuttontoincreasethevalue(pressandholdtheSELECTbuttontoscrollfaster).PressSET

tosaveandpressESCtoreturntothenormaloperatingmode.

Nowwhenthereadingexceedstheprogrammedlimitthemeterwillbeatoncepersecond.The

meterwillsoundthealarmuntilthereadingdoesnotexceedthealarmlimit,theuserchanges

thealarmlimitvalue,thealarmisswitchedoffasdescribedabove,orthemeterpoweris

removed.

8 CO220-EU-EN V1.3 07/13

AutomaticBaseline(ABC)Calibration

ABC(AutomaticBaselineCalibration)establishesabaselinecalibrationtoeliminatethezerodrift

oftheinfraredsensor.TheABCfunctionisalwaysONwhenthemeterisON.ABCisdesignedto

calibratethemeterattheminimumCO2readingdetectedduring7.5dayscontinuousmonitoring

(withpoweron).ItassumesthattheareabeingtestedreceivesfreshairwithaCO2levelof

approximately400ppmatsomeperiodoftimeduringthesevendays.Itisnotsuitabletouse

desktopCO2inclosedareaswithconsistentlyhighCO2levels24hoursaday.

NOTE:Afterthemeterhasbeenpoweredforoneday,presstheCO2buttontodetermineifthe

environmentissuitablefortheautomaticbaselinecalibration.

Maintenance

Cleaningandstorage

1. Themetershouldbecleanedwithadampclothandmilddetergentwhennecessary.Donot

usesolventsorabrasives.

2. Storethemeterinanareawithmoderatetemperatureandhumidity.

9 CO220-EU-EN V1.3 07/13

Specifications

FunctionRangeResolutionAccuracy

CO20to9999ppm1ppm±(5%rdg+50ppm)from0to2000ppm

Temperature

‐10to60°C

14to140°F 0.1°±0.6°C/1.0°F

RelativeHumidity0.1to99.9%0.1%

±3%(10to90%)

±5%(<10%or>90%)

@25°C

Display3‐tierMulti‐functionLCD

SensorTypeCO2:NDIR(non‐dispersiveinfrared)technology

Humidity:Capacitancesensor;

Temperature(air):Thermistor

Datalogging99points

OperatingConditions0to50°C(32to122°F);5to80%RH

StorageConditions‐20to50°C(14to122°F);5to90%RH

PowerSupply9VDCuniversalplugadapter

Dimensions155x87x81.5mm(6.1x3.4x3.2”)

Weight178g(6.2oz.)

Troubleshooting

Meterwon’tpowerONChecktoseethattheadaptorisproperlypluggedin.

SlowresponseCheckthattheairflowchannelsontherearofthe

meterhaveclearance.

ErrorCodes:

E‐1 CO2sensorisdamaged Returnforrepair

E‐2 Humiditysensoris

damaged

Returnforrepair

E‐3 Temperaturesensoris

damaged

Returnforrepair

E‐4Operatingtemperature

istoohigh

Putthemeterintypicalroom

temperaturefor30minutes,if

problempersists,returnforrepair

E‐5Operatingtemperature

istoolow

Putthemeterintypicalroom

temperaturefor30minutes,if

problempersists,returnforrepair

E‐6HardwarefailedReturnforrepair

10 CO220-EU-EN V1.3 07/13

CO2LevelsandGuidelines

IMPORTANTLIABILITYNOTE

TheCO2guidelinedataprovidedhereismeantforinformationalpurposesonlyandisnot

intendedasadirectrecommendationfromExtechInstrumentsorFLIRSystems.Theuser

musttakefullresponsibilitywhendetermininghowthisinformationistobeused.

Non‐EnforcedReferencelevels

250‐350ppm–background(normal)outdoorairlevel

350‐1,000ppm‐typicallevelfoundinoccupiedspaceswithgoodairexchange.

1,000–2,000ppm‐levelassociatedwithcomplaintsofdrowsinessandpoorair.

2,000–5,000ppm–levelassociatedwithheadaches,sleepiness,andstagnant,stale,stuffy

air.Poorconcentration,lossofattention,increasedheartrateandslightnauseamayalso

bepresent.

>5,000ppm–Exposuremayleadtoseriousoxygendeprivationresultinginpermanent

braindamage,comaandevendeath.

Regulatoryexposurelimits

ASHRAEStandard62‐1989:1000ppm:CO2concentrationinoccupiedbuildingshouldnot

exceed1000ppm.

OSHA:5000ppm:Timeweightedaverageoverfive8‐hourworkdaysshouldnotexceed

5000ppm

Buildingbulletin101(Bb101):1500ppm.UKstandardsforschoolssaythatCO2averaged

overtheentireday(i.e.9amto3.30pm)shouldnotexceed1500ppm.

Germany,Japan,Australia,UK:5000ppm,8hoursweightedaverageoccupational

exposurelimitis5000ppm.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

TestEquipmentDepot.com

Andere Handbücher für CO220

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