Extech Instruments THD5 - Page 4

4 THD5-en-GB_V1.0 4/15
 Startdelay
SelectaperiodoftimethatmustelapsebeforerecordingcanbeginaftertheSTART
buttonispressed(selectfrom0minto2hours).
 Alarmdelay
Thepresetalarmdelaytimeforsinglealarmtypeisalwayszero.
Theadjustablealarmdelaytimeforcumulativealarm
typeis5minutesto2hours.
 Alarmtypes
Regardlessofwhatalarmtypeisselected,theLEDwillcontinueflashing (onceitis
triggered)evenwhenthemeasuredvaluelaterreturnstothenormalrange.
SingleAlarm:TheLEDalarmistriggeredimmediatelywhenthemeasuredvalue
exceedsthealarmthreshold.
Cumulative:TheLEDalarmisnottriggeredwhenthemeasuredvalueexceedsthe
alarmthreshold.TheLEDalarmistriggeredonlywhentheaveragevalue,duringthe
alarmdelaytime,exceedsthealarmthreshold.
Disable:NoLEDalarmfunctionduringtheloggingprocess
 Alarmvalue
Selectthealarmthresholdvalue.Forexampleif2~8
o
Cisselected:Whenthe
measuredvaluefallsbelow2
o
Corexceeds8
o
CtheLEDindicatorwilltrigger.
 Unit
SelectthedesiredtemperatureunitforthePDFreport(CelsiusorFahrenheit).
 TimeZone
TheTHD5LoggerautosynchronizesthetimezonewithaPCwhen‘Save’isselectedto
confirmasetting.Note:Timezonechangesoccurringduringloggingarenot
takeninto
account.
 Password
ThepasswordsecurityfunctionisOFFbydefault.Thepasswordfunctioncanbe
enabledanda16alphanumericcharacter(max.)passwordcanbeusedtoprevent
unauthorizedre‐programming

Oncealltheprogrammingiscomplete,press‘Save’toconfirmthesettings.Ifdesired,close
thesetupwindowandremovetheloggerfromthePCUSBport.

Thedefaultvaluesforaboveparameters:
Samplingrate 5minutes
Startdelay 0minutes
Alarmdelay 0minutes
Temp.Unit °C
AlarmLimits
15~25
o
C
AlarmType SingleEvent
Language English
Password Disabled
CompanyName Blank

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