General Tools and Instruments HWA2005DL - Manual (Page 13)

5)Hold the " Probe Handle " ( 3-21, fig. 1 ) by hand
& let the " Sensor Head's mark " ( 3-20, Fig. 1 ) face
against the measuring air flow source, then the
Display ( 3-1, Fig. 1 ) will show air velocity directly. At
the same time, the display will show the air
temperature value.
@ The Temp. unit adjustment, please refer Chapter 5-6.
Measuring Consideration :
The mark on the sensor head indicates the
direction that " need to face against the air
flow.
4-2 Air flow ( CMM, CFM ) measurement
1)Install the " Probe Plug " ( 3-19, Fig. 1 ) into the
" Probe Input Socket " ( 3-17, Fig. 1 ).
Attention :
After install the " Probe Plug ", should slide
Probe Lock Switch " ( 3-18, Fig. 1 ) to the On
position ( right position )
2)Power on the meter by pressing the " Power Button "
( 3-2, Fig. 1 ).
3)Select measuring function by pressing " Function
Button " ( 3-6, Fig. 1 ) until the display show the
air flow unit ( CMM or CFM ).
@ Air flow measurement, the display unit
will show CMM ( or CFM ).
@ CMM : cube meter per minute.
CFM : cube feet per minute.
@ The air flow unit adjustment, please refer Chapter 5-8.
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