Extech Model 444731 Hygro-Thermometer 说明书用户手册.pdf

INSTRUCTIONMANUAL

Model444731

Hygro-Thermometer

1.INTRODUCTION

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CongratulationsonyourpurchaseoftheExtechModel444731Hygro-Thermometer.

ThismeterincludesaremotesensorandsimultaneouslydisplaysRelativeHumidityand

Temperaturemeasurements.

2.SPECIFICATIONS

RangeAccuracy

Humidity10-95%+3%(25to90%);

+5%(10to25%and90to95%)

0000

Temperature0to199.9F(0to93C)+4F,+2C

0000

Operatingtemperature32Fto122F(0Cto50C)

000

Storagetemperature32Fto140F(-20Cto60C)

TTLSerialOutputBaudrate1200bps,databits7,stopbits1,paritynone

FormatTxxx.xF:Hxx.x%crlf

Txxx.xC:Hxx.x%crlf

Power9Vbattery

Batterylife100hrs.typical(alkaline)

Dimensions-meter6.8x2.9x1.14

Dimensions-probe8.2Lx0.7D

Weight2lbs.2oz.

3.METERDESCRIPTION

1.Keypad

2.LCDDisplay

3.TTLOutputjack

4.ACAdapterjack

5.SensorInputjack

6.Sensor

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4.OPERATION

4.1BasicOperation

a)PresstheONkey.Themeterwilldisplaytherelativehumidity(large

charac