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Operation
Power
Taking measurements
Dew Point measurements
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Press the power button(
) to turn power on or off.
1. Hold the probe in the area to be tested.
2. Allow adequate time for readings to
stabilize.
3. The Relative Humidity measurement
appears in the top display.
4. Pressing the °F/°C/WBT/Dew Point button
toggles the lower display between
Temperature (°F), Temperature (°C), Dew
Point (°C), Dew Point (°F), Wet Bulb (°C)
and Wet Bulb (°F).
1. To select the Dew Point
measurement, press the
°F/°C/WBT/Dew Point button until
DEWPOINT (°F or °C) appears in the
lower right.
2. Dew Point temperature is now
displayed.
GlobalTestSupply
www.
°C °F
°C °F
Dewpoint
RH390-EU-EN V2.3 07/13
3
.com
sales@GlobalTestSupply.com
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