General Tools and Instruments HWA4204HA - Manual (Page 7)

4. MEASURING PROCEDURE
1) Connect the " Probe's Plug " (3-13, Fig. 1) to the
" Probe Input Socket " (3-10, Fig.1).
2) Power on the meter by push the " Power On/Off Button "
(3-2, Fig.1) once a while.
3) Select the desired temperature units, using the " F/C "蚓/蚌
Button (3-4, Fig. 1).
4) Select the desired air velocity units, m/s, km/h, ft/min,
knots, mile/h, using the " Unit Button " (3-8, Fig. 1).
5) Zero setting :
a. On the " Sensing Head " (3-11, Fig. 1), slide the sensor
cover to the up position to let the air velocity sensor isolated
from the environment, refer Fig. 2.
b. Push the " Zero Button " (3-7, Fig. 1) to let
the reading value of air velocity show zero value.
" Sensor cover " slide to the up position.
Fig. 2
Probe Handle
5