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UserGuide
TemperatureandHumidityDatalogger
Model42280
Introduction
CongratulationsonyourpurchaseoftheExtech42280ThermometerandRelativeHumidityDatalogger.The42280isawall-mount,tripodmount,ordesktopindoorairqualitymonitorwithaninternalmemorycapableofstoring16,000readings(8000temperaturereadingsand8000relativehumidityreadings)thatcanlaterbetransferredtoPCusingtheUSBinterface.Real-timemeter-to-PCloggingisalsosupported.Thismeterisshippedfullytestedandcalibratedand,withproperuse,willprovideyearsofreliableservice.
Materiallist
SuppliedMaterials
Meter
UserGuide
USBcable
ProgramCD
Four(4)batteries;1.5V‘AA’
Optionalaccessories
9Vadaptor
Calibrationbottles(33%and75%)forRelativeHumidityCalibration
Features
LargeLCDdisplayshowstemperature,humidity,anddate/timeclocksimultaneously16,000internalmemorycapacity(8000temperature;8000RH%)
VisualandAudible(with117VACadaptoronly)Alarms
EasilyconfiguredataloggerthroughthekeypadorviaPCinterface
USBPCinterfacewithWindowsTMsoftware
Wallmount,tripodmount,orfordesktopuse
242280V4.010/2007
Description
MeterDescription
HumiditySensor(internalTemperaturesensor)
Audiblealarm(withACadaptorpoweronly)
VisualAlarmLED
RelativeHumiditydisplay
DateandTimedisplay1
Temperaturedisplay
RECORDstatusLED
USBport
910..DACataAlodgagpetorrSjaTcAkRT-STOP4368
2
7button59
MODEbutton
SETbutton
UpArrowbutton
15
DownArrowbutton1011121314
Tripodmountjack
Notes:Thebatterycompartmentislocatedonrearofinstrument.Desktopstandfooters
arenotshownindiagram.
LCDDisplayDescription
TemperatureDisplay2DP
DewPointicon3REC1
Dataloggericon
6
DateandTime%5
HumidityDisplay4Y-M-D
LowbatteryiconH:M:S
342280V4.010/2007
Operation
ImportantNotebeforestarting
Thismeterreliesonfirmbuttonpressestooperatecorrectly.Besuretopressfirmlyandholdthebuttonforaslongasdirectedintheinstructions.
MeterPower
Themeterispoweredbyfour(4)‘AA’1.5Vbatteriesorthe117VACadaptor.
WhenthebatteriesareinstalledortheadaptorisconnectedtoanACpowersource,momentarilypresstheSTART-STOPbuttontoturnthemeterON.
PresstheSTART-STOPbuttonagaintoturnthemeterOFF.
Viewingthedisplayedreadings
Normally,thetoplineindicatestemperatureindegreesCorF.UsetheMODEbuttontoswitchbetweendegreesCanddegreesF.
PressandholdtheMODEforatleast2seconds.ThiswillchangethetopdisplaytoDewPointtemperature.The‘DP’iconwillappearontheLCDwheninDewPointmode.PressandholdtheMODEbuttonforatleast2secondstoreturnthetopdisplaytothenormaltemperaturedisplaymode.
ThemiddlelinedisplaysRelativeHumidityin%.
ThebottomlineautomaticallyalternatesbetweenTimeandDatedisplays.
IftheALMstatusLEDilluminatesandthedisplayflashes,oneoftheAlarmlimitshasbeenreached.ProgramtheHighandLowTemperature/HumiditylimitsinProgrammingparameterP5(detailedlaterinthisuserguide).
DataloggerBasics
TheModel42280hasabuilt-inDataloggerthatcanstoreupto8000temperatureand8000humidityreadings.ReadingscanbestoredinthemeterandtransferredatalatertimetoaPC.Themetercanalsodisplayreal-timereadingsonaconnectedPC;inotherwords,thePCcandisplayreadingsattheinstantthereadingsaretaken.
Themetermustbeconfiguredbeforedataloggingcanbeattempted.ParameterssuchasRealTimeClockandDataloggerSampleRatemustbeprogrammedbeforedataloggingcanbegin.Itisstronglyrecommendedthattheusertakeadvantageofthesuppliedsoftwaretoconfigurethemeter.Instructionsformanuallyconfiguringthemeterareprovidedbelow;howeverconfiguringthemeterviasoftwareisveryconvenient.
BasicinstructionsforconnectingthemetertoaPCandgettingstartedwiththesuppliedsoftwareareprovidedlaterinthisguide.DetailedinstructionsregardingthesuppliedsoftwareareprovidedinaseparatemanualincludedonthesuppliedCD-ROMandtheHELPutilityinthesoftwareprogram.
442280V4.010/2007
ManualProgramming
TheModel42280hasseveralprogrammingmodes(P1,P2,P3,P4,P5,andP6).TheseparametersmustbeprogrammedbeforetheDataloggerortheAlarmcanbeused.
ListofProgrammingModes
P1-Numberofsamplestorecord(1,2,4,8,12,or16x1000;1=1000,2=2000,etc.)P2-DataloggingStartMethods(Immediate,Keypad,Scheduled,andRepeatmodes)
P3–StartTime(setthetimeanddatewhenDataloggingwillautomaticallybegin);
NotethatP3willnotappearinthemenuif‘SCh’isnotselectedinP2.
P4-SampleRate(setthedataloggingintervalfrom1secondupto12hours)P5-AlarmMode(setHighandLowTemperature/Humiditylimits)
P6-RealTimeClock(setthemeter’sinternaldateandtimeclock)
ProgrammingModeP1;Numberofreadings(samplepoints)torecord
PresstheSETbuttontoaccessthesetupmode
UsethearrowbuttonstoselectparameterP1(seesampledisplaybelow)
PresstheSETbuttonagain
Usetheup/downarrowbuttonstoselectthedesirednumberofsamples(inthousands)torecordforadataloggingsession(1,2,4,8,12,or16;where1=1000,2=2000,4=4000,andsoon)
PresstheSETbuttontosavesetting
UsethearrowbuttonstoselectanotherprogrammingmodeorpressMODEtoexittheprogrammingmode.
542280V4.010/2007
ProgrammingModeP2;DataloggerStartModes
PresstheSETbuttontoaccessthesetupmode
UsethearrowbuttonstoselectparameterP2
PresstheSETbuttonagain
SelectoneofthefourStartmodesusingtheup/downarrowbuttons(seelistanddiagrambelow)
rEp(RepeatStartmode):LoggerstartsoncereadingsaredownloadedtoPC
hEy(KeypadStart):DataloggingbeginsaftertheSTART/STOPbuttonisheldfor2seconds
imm(ImmediateStart):Recordingstartsimmediatelyafterexitingthesetupmode
SCh(ScheduledStart):Loggingbeginsatapresetdateandtime
PresstheSETbuttontosavethesetting
UsethearrowbuttonstoselectanotherprogrammingmodeorpressMODEtoexittheprogrammingmode.
642280V4.010/2007
ProgrammingModeP3;DatalogStartTime
NotethatparameterP3willonlybevisibleiftheStartMODEissettoSHCEDULE(ParameterP2setto‘SCh’).
PresstheSETbuttontoaccessthesetupmode
UsethearrowbuttonstoselectY-M-DparameterP3
PresstheSETbuttonagain
Usetheup/downarrowbuttonstoset
theyearY-M-D
Y-M-D
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosetmonth
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosetH:M:SH:M:Stheday
PresstheSETbuttonagain
Useup/downbuttonstosetthehours
H:M:S8
PresstheSETbuttonagain
Useup/downbuttonstosettheminutes
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheseconds
PresstheSETbuttonagaintostorethesettings
PresstheMODEbuttontobackouttothetoplevelofthismenu.
UsethearrowbuttonstoselectanotherprogrammingmodeorpressMODEtoexittheprogrammingmode.
742280V4.010/2007
ProgrammingModeP4;DataloggerSampleRate
PresstheSETbuttontoaccessthesetupmode
UsethearrowbuttonstoselectparameterP4
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosethours
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheminutes
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheseconds
H:M:S
H:M:SH:M:S
PressSETagaintostorethesettings
PresstheMODEbuttontobackouttothetoplevelofthismenu.
UsethearrowbuttonstoselectanotherprogrammingmodeorpressMODEtoexittheprogrammingmode.
ProgrammingModeP5;HighandLowAlarms
PresstheSETbuttontoaccessthesetupmode
UsethearrowbuttonstoselectparameterP5
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheHighTemperatureAlarmlimit
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheLowTemperatureAlarmlimit
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheHighHumidityLimit
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheLowHumidityLimit
PresstheSETbuttonagaintostorethesettings
PresstheMODEbuttontobackouttothetoplevelofthismenu.
UsethearrowbuttonstoselectanotherprogrammingmodeorpressMODEtoexittheprogrammingmode.
Note:TheACAdaptormustbeusedfortheaudiblealarmtosound
842280V4.010/2007
ProgrammingModeP6;RealTimeClock
H:M:S
PresstheSETbuttontoaccessthesetupmode
UsethearrowbuttonstoselectparameterP6
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheyear
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosetmonth
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheday
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosetthehours
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheminutes
PresstheSETbuttonagain
Usetheup/downarrowbuttonstosettheseconds
PressSETagaintostoresthesettings
PresstheMODEbuttontobackouttothetoplevelofthismenu.
UsethearrowbuttonstoselectanotherprogrammingmodeorpressMODEtoexittheprogrammingmode.
942280V4.010/2007
Datalogging
StartingaDataloggingsession
The42280canautomaticallystoreupto16,000readings(8000temperatureand8000humidity)forlatertransfertoPC.Programthecontroller,asdiscussedearlier,beforeDatalogging.IftheDataloggerhasnotbeenconfiguredatthispoint,configureasnecessary.Ifprogrammingiscomplete,continuewiththenextsection.
StartingtheDataloggerbypush-button(KeyMode)
ProgrammingmodeP2(DataloggingStartModes)mustbesettoKEY(hEy)modeforthismethod.
WhenP2issetto‘hEy’,pressandholdtheSTART-STOPbuttonfor2seconds.
TheRECfront-panelstatuslightwillblinkindicatingthatreadingsarecurrentlyrecordingattherateprogrammedinparameterP4(samplerate)
Tostoprecording,pressandholdtheSTART-STOPbuttonforatleast2seconds.TheRECstatuslightwillstopblinking.
StartingtheDataloggerinImmediateMode
ProgrammingmodeP2(DataloggingStartModes)mustbesetto‘Imm’modeforthismethod.
Whentheprogrammingmodeisexited,Dataloggerautomaticallybegins.
TheRECfront-panelstatuslightwillblinkindicatingthatreadingsarecurrentlyrecording.
Tostoprecording,pressandholdtheSTART-STOPbuttonforatleast2seconds.TheRECstatuslightwillstopblinking.
StartingtheDataloggerinScheduleMode
InScheduleModethemeterbeginsrecordingataspecificdateandtime,asprogrammedbytheuser.
ProgrammingmodeP2(DataloggingStartModes)mustbesetto‘SCh’modeforthismethod.
AftersettingP2to‘SCh’,setthedesiredtimeanddateinProgrammingModeP3(P3onlyappearsinthemenuwhen‘SCh’isselectedinP2.
Dataloggingwillstartattheprogrammeddateandtime.NotethattheRealTimeClock(ProgrammingModeP6)mustfirstbesettothecurrentdateandtime.
Whendataloggingbegins,theRECfront-panelstatuslightwillblinkindicatingthatreadingsarecurrentlyrecordingattherateprogrammedinparameterP4(samplerate)
Tostoprecording,pressandholdtheSTART-STOPbuttonforatleast2seconds.TheRECstatuslightwillstopblinking.
StartingtheDataloggerinRepeatMode
InRepeatModethemetersimplybeginsdataloggingagainafterreadingsaredownloadedtoaPC.Thisallowstheusertomaintainthesameprogrammingselectionstimeaftertime.DataloggingisindicatedbytheflashingREClightasdescribedintheotherStartModesabove.
Tostoprecording,pressandholdtheSTART-STOPbuttonforatleast2seconds.TheRECstatuslightwillstopblinking.
1042280V4.010/2007
ConnectingtheMetertoaPC
AUSBcableisprovidedwiththemeter.Oneendofthecableconnectstothemeter’sUSBjackandtheotherendconnectstoaUSBportonthePC.
RunningthesuppliedPCsoftware
ThesuppliedPCsoftwareisincludedonthesuppliedCD-ROM.InserttheCDintothecomputer’sCD-ROMdriveandfollowtheon-screenpromptsandinstructions.InthesoftwareCOMPORTSETTINGfield,selecttheCOMporttowherethemeterisconnected.
SoftwareDataloggingParameters
Fromthemainsoftwarescreen,selectLOGGERSETandsetthesamplerate,samplepoints,andstartmode.ThesearedescribedinsomedetailintheseparatesoftwaremanualandthesoftwareHELPutilityonthesuppliedCD-ROM.Remembertopress‘OK’afterchangingasettingtoensurethatthesoftwareprocessesthechanges.Themeterisnowreadytorecord.
TransferringreadingstoPC
Connectandrunthesuppliedsoftwareaspreviouslydescribed.
PresstheDOWNOADSTARTbuttononthemainsoftwarescreentotransferthereadings.
Theseparatesoftwareinstructionssuppliedinthesoftware’sHELPutilityexplainhowtoview,graph,save,exportandprintthedownloadeddata.
NOTE:TheSoftware’sHELPutilityprovidesin-depthsoftwareanddownloadinginstructions,whichisbeyondthescopeofthisuserguide;pleaserefertotheHELPutilityinthesuppliedsoftwareprogramfordetailedguidelinesandinstructions.
1142280V4.010/2007
HumidityCalibration
Turnonthemeterandplugthehumiditysensorprobeintothe33%CalibrationReferencebottle.
SimultaneouslypressandholdtheSTART-STOPandtheSETbuttonsforatleast2secondstoenterthe33%Calibrationmode.Thedisplay’32.8%’willbegintoflashonthedisplay.
Approximately30minuteslater,the’32.8%’displaywillstopflashing,indicatingthatthe33%calibrationiscomplete
Plugthehumiditysensorprobeintothe75%CalibrationReferencebottle.
PressandholdtheSTART-STOPbuttonforatleast2secondstoenterthe75%Calibrationmode.Thedisplay’75.3%’willbegintoflashonthedisplay.
Approximately30minuteslater,thedisplaywillstopflashing,indicatingthattheentirecalibrationiscomplete.Themeterwillautomaticallyreturntothenormaloperatingmode
%%
CalibrationNotes:
TheusercanexitthecalibrationwithoutfinishingbypressingtheSTART-STOPbuttonfor2seconds(beforereachingstep6above).
Forbestaccuracy,performthecalibrationatroomtemperature.
CalibrationReferencebottlesareavailableoptionallythroughExtechInstrumentsdistributors
1242280V4.010/2007
Specifications
GeneralSpecifications
DisplayMeasurementranges
ResolutionAccuracy
DataloggermemoryOverrangeindication
LowbatteryindicationPowersupply
Multi-functionLCDwithstatusLEDindicators
Temperature:-4to144oF(-20to70oC)
Humidity:0to100%
DewPointtemperature:-4to144oF(-20to70oC)
0.1oC/oF/%
Temp:+/-1.0°F(0.6°C)from32to122°F(0to50’C)
+/-2.0°F(1.2°C)outsideofthisrange
Humidity:+/-3%from10to90%(+/-5%outsideofthisrange)16,000total(8000temperatureand8000humidityreadings)
ErrorcodeappearsontheLCD(seeTroubleshootingsectionbelowforlistofcodes)
BatterysymbolappearsontheLCDFour(4)1.5v‘AA’batteries
1342280V4.010/2007
Troubleshooting
PowerisONbutthere’snodisplay
CheckthatthebatteriesortheACadaptorisinstalledandconnectedproperlyEnsurethattheSTART-STOPbuttonispressedfirmlyandforatleast100ms
CalibrationFailure
CheckthatthebatteriesortheACadaptorisinstalledandconnectedproperlyEnsurethatthecalibrationbottlesaretightlysealedaroundthemetersensorEnsurethatcalibrationtakesplaceatroomtemperature
FlashingLEDIndicators
RECflasheswhendataloggingtakesplace
ALMlightflasheswhenalarmlimithasbeenexceeded
ErrorCodes
E02-Underflowerror
E03-Overflowerror
E04-E02andE03combinederror
E11-CALerror(recalibrationrequired)
E32-ICread/writeerror.ReturnunitforrepairE33-CircuitError.Returnunitforrepair
1442280V4.010/2007
CalibrationandRepairSe
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