Wet Bulb Measurements; Data Hold - Extech Instruments RH390 User Manual

Wet Bulb measurements

1. To select the Wet Bulb measurement,
press the °°F/°C/WBT/Dew Point
button until WET BULB (°F or °C)
appears in the lower right.
2. Wet Bulb temperature is now
displayed.
Temperature measurements
1. To select the temperature
measurement, press the
°F/°C/WBT/Dew Point button until °C
or °F appears in the lower right.
2. Temperature is now displayed.

Data Hold

Press the hold button (
momentarily to freeze the displayed
readings."HOLD" will appear on the upper
left-hand side of the display. Press the
hold button (
normal operation.
)
) again to return to
5
°C °F
WetBulb
°C °F
WetBulb
MAX MIN
°C °F
WetBulb
RH390-EU-EN V2.2 2/11