Extech 445814 Bedienungsanleitung
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User’sGuide
Model445814HumidityAlert
HumidityIndicatorwithDewPointandProgrammableHi/Lo%RHAlarms
Introduction
CongratulationsonyourpurchaseofExtech’sHumidityAlertHygro-Thermometer.
Humidityalarmswarnwhenthe%RHexceedsapre-setHIorLOlimit.Italso
featuresHumidityandTemperaturecalibrationadjustments.Theunitcanbewall-
mountedorplacedonaflatsurfaceusingthefold-outstand.Thisprofessional
meter,withpropercare,willprovideyearsofsafereliableservice.
MeterDescription
1.Temperature-HumiditySensor
2.%RHDisplay
3.DewPointDisplay
4.TemperatureDisplay
5.%RHLEDalarm
6.Max/Minpushbutton
7.Resetpushbutton
8.AudibleAlarmON/Offswitch
9.TiltStand
10.Humiditycalibrationadjust
11.Temperatureunitsswitch(ºF/ºC)
12.Temperaturecalibrationadjust
13.Wallhanger
14.Batterycompartment
Cautions
Thisdeviceisnotatoyandmustnotreachchildren’shands.Itcontains
hazardousobjectsaswellassmallpartsthatthechildrencouldswallow.In
caseachildswallowsanyofthem,pleasecontactaphysicianimmediately
Donotleavebatteriesandpackingmateriallyingaroundunattended;they
canbedangerousforchildreniftheyusethemastoys
Incasethedeviceisgoingtobeunusedforanextendedperiodoftime,
removethebatteriestopreventthemfromtraining
Expiredordamagedbatteriescancausecauterizationoncontactwiththe
skin.Always,therefore,usesuitablehandglovesinsuchcases
Seethatthebatteriesarenotshort-circuited.Donotthrowbatteriesintothe
fire.
Copyright©2005ExtechInstrumentsCorporation.Allrightsreservedincluding
therightofreproductioninwholeorinpartinanyform.
www.extech.com
V3.110/05
Operation
Preparationforuse
Openthebatterycompartmentbypushingthecoverontherearofthe
instrumentdownwardasindicatedbythearrow.Removethebatteryinsulating
stripandtheprotectivefilmcoverontheLCDdisplay.
TemperatureUnits
SelectºForºCunitsusingtherearselectionswitch.
Audiblealarm
Selectorusingtherearselectionswitchtoturntheaudiblealarmonor
off.
Maximum/Minimumdisplay
1.PresstheMAX/MINbutton.ThehighestvaluemeasuredsincetheReset
buttonwaslastpressedappearsonthedisplay.
2.PresstheMAX/MINbuttonagaintodisplaythelowestvaluemeasuredsince
theResetbuttonwaslastpressed.
3.PresstheMAX/MINbuttonagaintoreturntonormaldisplayoperation.
Resetting(clearing)theMAX/MINmemory
1.PresstheMAX/MINbuttontoentertheMAX/MINmode.
2.PressandholdtheRESETbuttonfor1secondtoclearthememoryand
startrecordingnewmax/minvalues.
Settingthe%RHAlarmLimits.
1.SimultaneouslyPressandHOLDtheMAX/MINandRESETbuttonuntil“HI”
andthestoredHI%RHlimitappearsflashing.
2.PresstheRESETbuttontosettheHi%RHlimit.Holdthebuttoninforrapid
adjustment.
3.PresstheMax/Minbutton.“LO”andthestoredLO%RHlimitwillappear
flashing
4.PresstheRESETbuttontosettheLO%RHlimit.
5.PresstheMax/Minbuttontoturnonoroffthealarm.Thealarmiconwill
appearinthedisplaywhenthealarmisactive.
6.PressandholdtheRESETbuttontosavethesettingsandexitthemode.
Alert
If%RHexceedstheHIlimitorgoesbelowtheLOlimitthealertwillbe
activated.Thealertconsistoftwoflashing‘ALERT”iconsintheupperdisplay,
aflashingredlight(for60seconds)andanaudiblebuzzer(for60seconds)
Calibration
RHCalibration
1.Insertmeter’ssensorintoahumiditychamber.Thereferenceshouldbe>70%
RH.
2.Checkthereadingafter1hour.
3.AdjusttheRHcalibrationpotin½turnincrements,waitingforthedisplayto
updateaftereachadjustment,untilthereadingiswithintheaccuracy
specification.
TemperatureCalibration
1.Placethesensorinastabilizedenvironmentofapproximately21°C.
2.Checkthereadingafter1hour.
3.Adjustthetemperaturecalibrationpotin½turnincrements,waitingforthe
displaytoupdateaftereachadjustment,untilthereadingiswithinthe
accuracyspecification.
BatteryReplacement
Openthebatterycompartmentbyslidingthebatterycoverontherearofthe
instrumentdownwardasindicatedbythearrow.Replacethe1.5V‘AA’batteries
andreplacethecover.
You,astheenduser,arelegallybound(Batteryordinance)to
returnallusedbatteriesandaccumulators;disposalinthe
householdgarbageisprohibited!
Youcanhandoveryourusedbatteries/accumulators,
gratuitously,atthecollectionpointsforourbranchesinyour
communityorwhereverbatteries/accumulatorsaresold!
Disposal:
Followthevalidlegalstipulationsinrespectofthe
disposalofthedeviceattheendofitslifecycle
Specications
RangeAccuracy
Temperature-10to60
o
C
14to140
o
F
+1.0
o
Cwithin-10
o
Cto50
o
C
+1.8
o
Fwithin14
o
Fto122
o
F
Humidity10%to99%
+
4%RHwithin25%to85%RHand0to
50
o
Cor32to122
o
F
DewPoint-36to60
o
C
-32.8to140
o
F
+/-2
o
C.@20
o
C
+/-3.6
o
F@68
o
F
Battery(2)1.5V'AAA'cell
Weight6oz(169g)
DimensionsDisplay:4.3x3.9x0.8”(109x99x20mm)
Note:Ifsubjectedtoanelectrostaticdischargethemetermay
malfunctionandrequiretheusertoperformareset.
Produktspezifikationen
| Marke: | Extech |
| Kategorie: | Messgeräte |
| Modell: | 445814 |
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