Extech Instruments RHT30 User Manual

7RHT30_TH30‐en‐GB_V1.0(11/16)
 AlarmDelay
ThepresetalarmdelaytimefortheSingleEventAlarmmodeisalwayszero.
TheadjustabledelaytimerangefortheCumulativeAlarmis5~120minutes.
 AlarmModes
SingleEventAlarmmode:TheLEDimmediatelystartsflashingredevery10
secondswhenthemeasuredvalueexceedsthealarmthreshold.
CumulativeAlarmmode:TheLEDbeginsflashingredonlyaftertheaverage
valueexceedsthealarmthresholdandalsoafteranyprogrammedAlarm
Delaytime.SeeAlarmDelayparameterabove.
AlarmDisable(default):Alarmfunctiondisabled.
AlarmNote:TheLEDwillcontinueflashingredevery10seconds(onceitis
triggeredbyanalarm)evenwhenthemeasurementlaterreturnstothe
normalrange.TostoptheLEDalarm,plugtheloggerintothePCUSBportto
generateareport,orpoweroffthelogger(shortpressofthepowerbutton
whileitisnotconnectedtothePC).

AlarmLimits
Selectthealarmthresholdrangesforairandexternalprobetemperature
(TH30)orairtemperatureandRH%(RHT30).Forexample,iftheexternal
probetemperaturerangeissetto2.0~8.0
o
C,whenthemeasurementfalls
below2
o
Corexceeds8
o
CtheLEDwillflashredevery10seconds.
Note:Ifanalarmoccursbetweentwologgingpoints,theloggeddatawillnot
showthealarmbuttheLEDmaystillflashredevery10seconds,especiallyin
SingleEventalarmmode.Ifdesired,usetheCumulativeAlarmmodeto
minimizethiseffect.
 Password
A16alphanumericcharacter(max.)passwordmaybeusedtoprevent
unauthorizedre‐programming.
 UserCompanyName
Inputacompanynametobeincludedonthelogreport(20charactersmax.).
 ANoteOnTimeZones
Theloggerautomaticallysynchronizesthetimezonewith
theconnectedPC
when‘SAVE’isselected.Note:Timezonechangesoccurringduringloggingare
nottakenintoaccount.


Oncealltheprogrammingiscomplete,press‘SAVE’toconfirmthesettings.Closethe
setupwindow,removetheloggerfromthePCUSBport,andstartdataloggingas
describedinthenextsection.
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Extech Instruments RHT30 Specifications

General

Brand	Extech Instruments
Model	RHT30
Category	Data Loggers
Language	English