General Tools and Instruments DAF4223 - Manual (Page 11)

4-4 Humidity measurement
1)Turn on the meter by pressing the " Power Button "
( 3-3, Fig. 1 ) momentarily.
2)For the above 4-1 mode ( function ) selection, please
set to :
a. Humidity/Temp.
( Upper display show humidity value , lower
display show Temp. value )
4-5 Dew point measurement
1)Turn on the meter by pressing the " Power Button "
( 3-3, Fig. 1 ) momentarily.
2)For the above 4-1 mode ( function ) selection, please
set to :
b.Humidity/Dew point
( Upper display show humidity value , lower
display show dew point value )
4-6 Data Hold
* During the measurement, press the " Hold Button "
( 3-4, Fig. 1 ) momentarily to hold the measured
value. The LCD will show a " HOLD " symbol.
* Press the" Hold Button " once again to release the
data hold function.
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