Extech Instruments 42275 User manual

Brand: Extech Instruments

Model: 42275

Type: User manual

This manual is also suitable for

42270

Extech Instruments 42275 is a versatile temperature and humidity datalogging system designed to monitor and record environmental conditions in various settings. With its wide temperature range (-40 to 85°C) and high accuracy (±0.6°C), it can be used for applications such as greenhouse monitoring, food transport, museum climate control, and HVAC system analysis. The device's ability to measure relative humidity (0.0 to 99.9%) makes it suitable for humidity-sensitive environments.

42270-en-GB_v3.2 11/16

USERMANUAL



Model42270Temperature

&HumidityDatalogger



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

Introduction



Model42270:TemperatureandHumidityDataloggingModule

Model42275:42270module,Dockingstation,SoftwareCD



This Datalogger can be used to monitor the temperature of

greenhouses,warehouses,foodtransports,aircraftcabins,refrigerated

trucks, containers, museums, and HVAC equipment. The Model 42270

recordsRelativeHumidityreadingsinadditiontotemperaturereadings.

Programming and data retrieval instructions are included on the

SoftwareCDlocatedinthe42275kit

oronwww.Extech.com.



Description



1. Mountinghole

2. StatusLEDs(RecordandAlarm)

3. LCDdisplay



Displays

LCDDisplay

REC: Displayedwhileloggingreadings.

HIandLOW: DisplayedwhentheHighorLowAlarmlimitisexceeded.

RH%: RelativeHumidity

CorF: Temperatureunits.

COMM: AppearswhenDataloggeriscommunicatingwithaPC.



RecordingStatusIndication

BoththeREDstatusLEDandthedisplayindicator‘REC’

willflashevery5

secondsifthesamplingrateissetto5secondsorhigher.Ifthesampling

rateissetlowerthan5seconds,theindicatorswillflashevery1,2,3,or4

secondsasprogrammed.



ALARMStatusIndication

BoththeYELLOWstatusLEDandthedisplay

indicator‘ALM’willflash

whentherecordedvalueishigherthantheuserprogrammedHighAlarm

valueorlowerthantheLowAlarmvalue.TheAlarmstatusLEDandthe

‘ALM’displayindicatorflashevery5secondsifthesamplingrateis

programmedfor5secondsorhigher.Ifthesamplingrateissetlower

than5seconds,theindicatorswillflashevery1,2,3,or4secondsas

programmed.



LowBatteryIndication

Whenthelithiumbatteryvoltagenearsthecriticaloperatinglevelthe

LCDdisplays‘LO’.Toreplacethebattery,refertotheBattery

Replacementsectionof

thismanual.



Specifications

Frontpanelstatus LEDsTwo(2):RECORDandALARM

Temperaturerange‐40to85°C(‐40to185°F)

Temperatureresolution0.1°upto99.9°;1°from100°to185°

Temperatureaccuracy ±0.6°C(1.2°F)from‐20to50°C(‐4to122°F)

 ±1.2°C(2.4°F)allotherranges

RHrange&accuracy

0.0to99.9%RelativeHumidity;Accuracy:±3%

DataloggerMemory 16,000temperaturereadings

(8,000temperature&8,000RHreadings)

Samplingrate Programmablefrom1to7200seconds(2hours)

Powersupply 3.6V½‘AA’lithiumbattery(SAFTLS‐14250)

BatteryLife 1year:5secondsamplerateinsleepmode

 3.8months:24‐hourrateinnon‐sleepmode

LowbatteryIndicator Displayshows‘LO’

Dimensions 76.2x57.2x22.3mm(3x2.3x0.88")



BatteryReplacement

Whenlowbatteryicon(‘LO’)appears,replacetheLithiumCR2battery.

1. OpenDataloggerbyfirstremovingthefour(4)rearPhillipsscrews.

2. CarefullypryofftherearoftheDatalogger.

3. ThecylindricallithiumbatteryislocatedonbottomofPCBboard.

4. Replacethebattery,observingpolarity.

AssembletheDataloggerhousing.



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.



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

ISO‐9001Certified

www.extech.com

NOTE:Thedataloggerdisplaywillnotswitchonuntilactivated

bysoftware.

NOTE:This dataloggercannotbeusedwithoutthesoftware

anddockingstationincludedinthe42275kit.



Extech Instruments 42275 User manual

Brand: Extech Instruments

Model: 42275

Type: User manual

This manual is also suitable for

42270

Download PDF

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Extech Instruments 42275 User manual

This manual is also suitable for

Extech Instruments 42275 User manual

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