Extech Instruments CO50 User manual

USERGUIDE
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DesktopCarbonMonoxideMonitor
ModelCO50
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EXTECHINSTRUMENTS
2CO50‐en‐GB_V1.212/14
Introduction
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ThankyouforselectingtheExtechInstrumentsModelCO50,thismetermeasurescarbon
monoxide(CO),airtemperature,andhumidity.TheCO50canbeusedtocheckindoorairquality
andcarbonmonoxideproblemareas.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
Largefour‐tieredLCDSimultaneouslydisplaysCOconcentration,AirTemperature,andRelative
HumiditywithDateandTime
Desktopstylewithaudiblealarm
Latestsmartmeasurementtechnology
Easytouse,intendedforindoorairqualitymonitoring
BrightmulticolorLEDrepresentingRecording(Green),Alarm(Red),Startup(Orange)
99datapointmemory
UseradjustableCOAlarmlimit(default30ppm)
Max.readingutility
ElectrochemicalCOsensor,measuresupto999ppm
IncludesUniversalACadaptor(100‐240V)forUS,EU,UK,andAUSplugtypes
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IMPORTANTSAFETYNOTES
TheCO50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CO50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CO50‐en‐GB_V1.212/14
MeterDescription
ButtonDescription
SETButton:
Setdateandtime
AudibleAlarmON/OFF(SET+MODE)
AlarmLimitAdjustment
Togglethetimeformat(12/24clock)
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SEL/RECALLButton:
Movetonextdigit
Shortpresstosavecurrentreading
Longpresstorecallstoredreading
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C/F/%RHButtonwithuparrow:
Increaseavalue
Pressandholdtoswitchtemperatureunits
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MODEButtonwithdownarrow:
Decreaseavalue
ReviewMaximum(MAX)reading
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MeterDescription
1. TopLCDdisplayforCOconcentration
2. MiddleLCDdisplayforRHandtemperature
3. BottomLCDdisplayTimeandDate
4. PowerAdaptorjack
5. Push‐buttoncontrols
6. MulticolorLEDindicatorlight
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LEDIndicatorDescription
WhenmeterispoweredontheLEDisilluminatedorange
InnormalmodewithmeterON,LEDisnotilluminated
EachtimeareadingisstoredinmemorytheLEDflashesgreenandtheaudiblebeepersounds
WhenthealarmistrippedtheLEDflashesredandtheaudiblebeepersounds
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EXTECHINSTRUMENTS
4CO50‐en‐GB_V1.212/14
Operation
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POWERTHEMETER
PlugtheACadaptorintometerandreceptacletoturnonthe
meter.Resetthedateandtimeeachtimethemeterpoweris
cycled.RemovetheadaptororswitchofftheACpowersource
toshutdownthemeter.
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GETTINGSTARTED
AllLCDdisplaylineswillswitchONwhenpowerisappliedto
meter.TheLEDindicatorwillalsobeONsteadywithanorange
color.Thedisplaywillnowautozero.Autozerotakes
approximately60secondsandthenthemetercountsdown
from9to0.Themeterisnowinthenormaloperatingmode.
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WhenattemptingtomanuallystorethecurrentCOreading,theLEDlightturnsgreenforone
secondandashortbeepertonewillsound.
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TheLCDsshowthecurrentCOvalueinppm(top),ambienttemperature/relativehumidity
(middle),andthedateandtime(bottom).
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TogglethetemperatureunitsbypressingandholdingtheC/F/%RH▲button.
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SETTINGDATE/TIME
Innormaloperation,themeteralternatesthedateandtimedisplays.
PresstheSETbuttontoswitchbetweenthe12‐hoursystem(am/pm)
andthe24‐hoursystem.Notethatthedefaulttimedisplayisa24‐
hourclockformat.
1. PressandholdSETfor3secondstoseeimageatright.
2. Press▼todecreaseanumberorpress▲toincreaseanumber
3. PressSEL/RECALLECALLtoscrollthroughtheYEAR‐MONTH‐DAY
4. WhenfinishedchangingtheDate,pressSETtochangetheTime
5. Press▼todecreasenumberorpress▲toincreasenumber
6. PressSEL/RECALLECALLtoscrollthroughHR‐MIN‐SEC
7. PressSETtoaccessthealarmsetting(seeAlarmsection).
8. Toexit,pressandholdSETfor3seconds.
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EXTECHINSTRUMENTS
5CO50‐en‐GB_V1.212/14
MAXIMUMREADING
PresstheMODE▼button,theLCDwillshowthemaximumreadingsincethemeterwasfirst
powered.Pressagaintoreturntothenormalmeasurementmode.
Toclearthemaximumreading:EntertheMaximummodeand,whenMAXIconappears,press
andholdtheSETbutton,“Clr”appearsforconfirmationofclearcommand.
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COALARMSETTING
1. PressandholdtheSETbuttonfor3secondstoenterthesetupmode
2. PressSETagaintoskiptheDatesetting(settheDateifdesiredperearlierinstructions)
3. PressSETagaintoskiptheTimesetting(SettheTimeifdesiredperearlierinstructions)
4. Aflashingdigitwillappear.Usetheup▲anddown▼arrowstoincrease/decreasethe
alarmthreshold.PressSEL/RECALLtomovetothenext
digit.Thereare3digitplaceswithamaximumsettingof
999pm(30ppmisthedefault).
5. PressandholdSETfor3secondstosaveandreturnto
thenormalmeasurementmode.
Whilealarmistripped,theLEDwillflashredevenif“beeper
audiooff”isselected.Tosilencethebeeperwheninanalarm
condition,pressSETandMODEatthesametime.TheredLED
willcontinuetoflash,however,untiltheenvironmentalCO
levelnolongerexceedsthedefaultoruserselectedAlarm
level.Remembertoreactivatethebeeperforfutureuse.
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EXTECHINSTRUMENTS
6CO50‐en‐GB_V1.212/14
AUDIBLEALARMBEEPER(ON/OFF)
Bydefault,thebeeperissetON,andtheLCDshowsthebelliconontheleftsideoftheLCD
screen.
ToswitchOFFtheaudiblealarmtemporarily:Fromthenormalmeasurementmode,pressthe
SET+MODE▼buttonatthesametime(thebellicondisappears).After4minutesthealarm
willturnonagainautomatically.TocomplywithULregulations(2013),thebeepervolumeis85
dBatadistanceof3meters(9.8feet).
TheAlarmbeeperwillsoundwhentheenvironmentalCOlevelexceedstheDefault(30ppm)or
userselectedlevel.
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BEEPERON BEEPEROFF

EXTECHINSTRUMENTS
7CO50‐en‐GB_V1.212/14
MANUALLYSTORE/RECALL99COREADINGS
TheCO50canmanuallystoreaCOreadingwithapressoftheSEL/RECALLbutton.TheLCD
showsthecurrentrecordnumber(01‐99)inthehumidityreadingareaeachtimeareadingis
manuallystored(ashortbeepwillsoundeachtimeareadingisstoredalso).
Torecallstoredreadings,pressandholdtheSEL/RECALLButton,theLCDshowsthenumberof
therecordwithitsCOreading,toscrollotherstoredreadingsusethe▲and▼buttons.
Toclearstoreddata:
AccesstheRecallmodeandpressandholdtheSETbuttonuntil“Clr“appearsonLCD.TheLCD
automaticallyreturnstonormalmode.
Theillustrationbelowontheleftshowsamanuallyrecordedreading(readingnumber‘05’inthis
case);themiddleillustrationshowstherecalledreading;theillustrationontherightshows
readingscleared.
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COCALIBRATION
Itisrecommendedthatthemeterbecalibratedmonthlyinacleanair
environment.
Fromthenormalmeasurementmode,pressandholdtheMODE▼
buttonforatleast6secondstoentercalibrationmode.
TheLCDshowsCALandanumberrepresentingthetimeremainingin
thecalibration(15seconds).Themeterreturnstothenormal
measurementmodeautomaticallywhencalibrationiscomplete.
Warning:EnsurethatnoCOconcentrationispresentwhilecalibrating.
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ReadingstoredReadingRecalled ReadingCleared

EXTECHINSTRUMENTS
8CO50‐en‐GB_V1.212/14
Specifications
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MeasurementsCO(ppm),TemperatureoF/oC,andRH%
COmeasurementrange000to999ppm
COresolution1ppm
COaccuracy±5%ofreadingor±10ppm
COSensorElectrochemicaltype
AlarmalertRedLEDandaudiblebeeper>85dB(3mdistance)
Temperaturerange‐10to60oC(14to140oF)
Temperatureresolution0.1oC/oF
TemperatureAccuracy±0.6oC(1.2oF)
RHrange10to90%RH
RHResolution0.1%RH
RHAccuracy±5%RH(at25oC)otherwise±7%
Memorycapacity99datapoints
PowerACadaptor
Dimensions155x87x81mm(6.1x3.4x3.2”)
Weight165g(5.8oz.)
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Copyright©2014FLIRSystems,Inc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform
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