General Tools and Instruments HWA2005DL - Manual (Page 14)

4)The display's bottom left side will show area size in
Meter^2 ( or Ft^2 ) when make the air flow measurement.
@ Meter^2 : Meter square, Ft^2 : Feet square.
@ The adjusting procedures of area size, please refer
Chapter 5-9.
5)Hold the " Telescope Probe " ( 3-21, fig. 1 ) by hand &
let the " Sensing Head " ( 3-20, Fig. 1 ) face against to
the measuring air flow source, then the Display ( 3-1,
Fig. 1 ) will show air flow value.
Measuring Consideration :
Sensor head direction
The mark on the sensor head indicates the
direction that " need to face against the air flow.
Zero setting :
a.When slide the sensor cover of " Sensing
Head " ( 3-20, Fig. 1 ) to the up position
to let the air velocity sensor isolated
from the environment ( refer Fig. 2 ).
b.Push the " Button " ( 3-5, Fig. 1 ) 2 seconds
▲
continuously at least to let the reading value
of air velocity show zero value.
4-3 Thermocouple ( Type K/J ) Thermometer
measurement
1)Not install the anemometer " Probe Plug " ( 3-19,
Fig. 1 ) into the " Probe Input Socket " ( 3-17, Fig. 1 )
Attention : After take away the anemometer
Probe Plug " , then should slide Probe
Lock Switch " ( 3-18, Fig. 1 ) to the On
position ( right position )
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