General Tools and Instruments WDCFM8912 - Manual (Page 8)

• Diameter:
While in default outlet setting mode (length), pressing
ENTER
key
for over two seconds to choose diameter setting. Press
M
HOLD key
to select the setting digit first, then press
L
Mx/Mn key to select the
appropriate value (0-9)
(Fig. I) (Fig. J)
• Area:
While in diameter setting mode, pressing
ENTER
key for over two
seconds to enter area setting. Press
M
HOLD key to select the
setting digit first, then press
L
Mx/Mn key to select the appropriate
value (0-9)
After selection, short press
ENTER
again to finish the size setting
and enter next step. (Fig. L)
(Fig. K) (Fig. L)
CAPACITY: MEASUREMENT
After short pressing
ENTER
to finish and leave size setting, there are
90 or 20 second (note 1) waiting time for you to put the vane to the
grill.
During above waiting time, the count down number displayed on
top-left corner and meter also beeps when time is up. (Fig. M)
If no need to wait for 90 or 20 seconds, just press
REC
/
START
key
to start measuring the capacity right away.
Note 1: If you have many outlets to
measure, while you start to measure
the second one, the waiting time
will adjust to 20 sec automatically.
90 sec. is the buffer for sensor to
stable. No matter in inlet or outlet,
suggest to move the vane along the
grill to get accurate values.
(Fig. M)
After starting measuring the capacity, the meter will automatically
count the capacity for 60 seconds to give an average value. (Fig. N)
8
WDCFM8912 Manual final2F-062708:Layout 1 6/27/08 10:55 AM Page 8