User Manual

HOBO U14 Data Logger User Manual
8
 TemperatureReading.Thisdisplaysthecurrenttemperature(FahrenheitorCelsiusasselectedinHOBOware)onthe
LCD.Internalsensorhastemperaturemeasurementrangeof‐20°Cto+50°C(‐4°Fto+122°F).Notes:Theremaybeslight
variationsbetweenthedisplayedtemperaturevalueandtheloggedvalueduetolimitsin
displayconversions.The
valuesseeninHOBOwareandtheU‐Shuttlearetheactualrecordedvaluesandthemostaccurate.Thedisplayed
temperatureontheLCDscreenmaybe±0.3°C(±0.6°F)differentthantheloggedvalue.Fahrenheitvaluesof200°and
higheraredisplayedasthreedigitswithoutadecimal
(e.g.,205°F);however,thefullresolutionvaluewillberecordedin
theloggermemory(e.g.,205.4).
 RelativeHumidity(RH)Reading.ThisdisplaysthecurrentRHontheLCD.Theinternalsensorhasameasurementrange
of0%to100%.
 AlarmIcon.ThisdisplaysalertsasconfiguredwithinHOBOware.Specifically,
ALERTindicatorsignalswhentemperature
orrelativehumiditylimitshavebeenexceeded.ALERTDELAYEDifyouhavedelayenabledandanalarmistripped.
Trianglewithexclamationmarkimmediatelyafterdelay(ifenabled)indicatesthattherelayisinanalarmstate.
 BatteryLevel.Remainingbatterylevelisindicated
byafive‐segmentbar.Thenumberofsegmentsdecreasesasbattery
leveldecreases.BatteriesshouldbereplacedwhentheBATTLEVELbargraphisdowntoonesegment,whichindicates
20%batterylifeorless.
 RemainingMemory.Remainingmemoryisindicatedbyafive‐segmentbar.Thenumberof
segmentsdecreasesas
remainingmemorydecreases.NOTE:Ifthememoryisfull,theloggerwillnolongerlog.Theloggerwillcontinueto
monitorconditionshowever,andwilltriggeranalertifthereadingfallsoutsideoftheconfiguredrange.Youmust
readouttheloggerandthenrelaunchitusing
HOBOwaretoresumelogging.
LCD Indicators
Alarms
IfthetemperatureorRHmeasuredbytheloggerfallsoutsidetheselectedhighorlow
limit,theword‘Alert,’analertsymbol,andthetemperatureorRHmeasurementthat
wentoutoflimitswillflash.Ifyousetthenumberofsamplestogreaterthan1andthe
measured
valueisoutsidethelimits,ALERTDELAYEDwillflashuntileitherthenumber
ofsamplesisreached(ALERTwithatrianglesymbolisdisplayed)orthealertcondition
nolongerexists.
Battery Level
BATTLEVELbargraphdowntoonesegmentindicates20%batterylifeorless.Batteries
shouldbereplaced.
Condensation (100%RH) 100%RHisdisplayedifatemperature/RHsensorisconnectedandiscoveredwith
condensation.Thesensorwillnotprovideaccuratereadingsuntilithasdriedout.
Unread Data
Iftheloggerhasbeenstopped,eithermanuallyorbecausethememoryisfull,theMEM
LEFThashmarkswillblinkindicatingthereisunreaddata.
Memory
Remainingmemoryisindicatedbyafive‐segmentbar.Segmentsdecreaseasremaining
memorydecreases.TheMEMLEFTbargraphwilldecreaseasthememoryisfilled.
Whenthememoryhasbeencompletelyfilled,theMEMLEFTdisplaywillflashandall
segmentswillbeoff.TheHOBOU14will
continuetomonitorconditionshowever,and
willtriggeranalertifthereadingfallsoutsideoftheconfiguredrange.Youmust
readouttheloggerandthenrelaunchitusingHOBOwaretoresumelogging.
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