General Tools and Instruments HWA2005DL - Manual (Page 11)

* When begin to use the probe,
a. Slide the sensor cover to the down position, let the
air velocity sensor to contact the air, refer Fig. 3.
b. Extent the telescope probe to the convenient length
,refer Fig. 3
air velocity sensor
( do not touch by
fingers or tools )
" Sensor cover "
slide to the low
position when
make the
measurement
Probe Handle
Fig. 3
* Do not use the fingers or any tools to touch the air
velocity sensor, otherwise the meter may happen
the permanent damage without warranty.
* Direction of the sensor head :
There is a mark on the top of the " Sensor Head ",
When make the measurement, then this mark should
against the measured wind, refer Fig. 4.
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