Meter Description; Display Description - Extech Instruments RH490 User Manual

Meter Description

Humidity & Temperature Sensor
1.
LCD Display
2.
Power ON/OFF button
3.
°F/°C/WBT (wet bulb)/Dew Point button
4.
Hold/MIN-MAX button
5.
%RH, GPP, g/Kg, Backlight button
6.
Note: The battery compartment is located
on the rear of the instrument

Display Description

Relative Humidity %
1.
Dew Point
2.
Wet Bulb
3.
°C/°F
4.
Temp/WB/DP Display
5.
Maximum
6.
Minimum
7.
Low Battery
8.
Hold
9.
RH% Display
10.
Auto Off
11.
Grains per pound
12.
RH490 V2.0 12/06
3