Table of Contents
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Introduction
Congratulations on your purchase of the Extech RH300 Digital Psychrometer. This device measures
Humidity, Air Temperature, Dew Point temperature and Wet Bulb temperature. Advanced features
include External Temperature Measurement (with optional probe), Data Hold, selectable Auto Power
Off, and MAX/MIN/Average reading. Careful use of this meter will provide years of reliable service.
Meter Description
1.
Humidity Sensor & Air Temperature Sensor
2.
Triple LCD Display
3.
ON/OFF button
4.
T1-T2/Dew Point/T1 button
5.
°F/°C select
6.
MIN/MAX/RESET button
7.
T2-DP/Wet Bulb/T2 button
8.
HOLD button
9.
T2 Probe Jack
Note: The battery compartment is located
on the rear of the instrument
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RH300-EU-EN v1.6 9/13
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