General Tools and Instruments DAF80PW - Manual (Page 7)

4. MEASURING PROCEDURE
4-1 Air velocity/Temperature measurement
1 )Install the " Probe Plug " ( 3-13, Fig. 1 ) into the
" Input Socket " ( 3-8, Fig. 1 ).
2) Power ON the meter by pressing the " Power Button "
( 3-2, fig. 1 ).
3) a. Select the desired air velocity unit ( m/s, km/h, mph,
knots, ft/min ) by pusing the " unit Button " ( 3-5, fig. 1 ).
b. Select the desired temperature units by pusing the " 蚓/蚌
Button " ( 3-6, fig. 1 ).
4) Use the hand to hold the " Probe Handle " ( 3-12, Fig. 1 ),
face the " Vane Probe Head " ( 3-11, Fig. 1 ) to the
measured wind. In the same time the air velocity and the
temp. value will show on the LCD display.
Measuring Consideration :
The yellow dot mark on the sensor head indicates the
" yellow dot mark " need to face against the direction of
air flow.
4-2 Data Hold, Date Record
1) Data Hold
a. During the measurement, pushing the " Data Hold
Button " ( 3-3, Fig. 1 ) will hold the measured value &
the LCD will indicate " HOLD " symbol.
b. Push the " Data Hold Button " again to release the
data hold function.
2) Data Record ( Max., Min. reading )
a. The data record function records the maximum and
minimum readings. Press the " REC. Button " ( 3-4,
Fig. 1 ) to start the Data Record function and there
will be a " REC " symbol on the display.
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