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

Specications

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