A. MEASURING AIR VELOCITY (SINGLE POINT) FEET PER MINUTE (FPM)
1. Press the ON/OFF button and turn meter on. Meter will show full display when first
powered on.
2. Unit is ready for use when LCD display shows “vel” at upper left corner and temperature
at lower right corner.
B. CONTINUOUS MOVING AVERAGE
The meters displays continuous moving average for up to two (2) hours
1. Power the unit on.
2. Place sensor in front of air flow source.
3. Press
MIN/MAX REC
key and unit will begin to display moving average. The Meter will
record the reading every second.
4. Press
HOLD
prior to moving instrument away from air flow source to store readings.
C. MIN/MAX/AVG READING ON A SINGLE POINT
To obtain MIN/MAX/AVG readings on a single point:
1. Power unit on.
2. Place sensor in front of air flow source.
3. Press
MIN/MAX REC SINGLE POINT
key. The unit will begin to record readings.
4. Press
HOLD
prior to moving instrument away from air flow source to store readings.
a) Press the
MIN/MAX
key once and the screen will display AVG velocity readings under
REC.
b) Press the
MIN/MAX
key again and AVG disappears.
c) Press the
MIN/MAX
key again to display MIN velocity readings next to REC.
d) Press the
MIN/MAX
key again to display MAX velocity readings.
e) Press the
MIN/MAX
key again to display current velocity.
5. To clear the current MIN/MAX average readings, turn off the power or press and hold the
MIN/MAX REC
key until unit beeps twice, then release. This will clear the stored readings.
D. AIR VELOCITY AVERAGE FOR MULTIPLE POINTS
1. Power the unit on and position the vane at the first point to be measured.
2. As soon as the first measurement is completed press the
HOLD
key until you hear a single
beep, then release. The display will show “Hold” above the reading
3. Press the
MIN/MAX
key. When you will hear a single beep release the button. The display
will show a digit (1-8). This number represents the point that is being recorded.
4. Repeat this process until all desired points have been measured and recorded. A maxi-
mum of 8 points may be recorded at one time.
5. Once all measurements have been recorded press
AVERAGE
key, The unit will display the
average air velocity reading and the number of points measured.
E. NON-SLEEP MODE -
(BYPASS AUTO POWER OFF)
1. Power unit off
2. Press
ON
and
HOLD
at the same time
3. Release
ON
only
4. When an “n” appears on the LCD release the
HOLD
key. The instrument will now remain on
until the OFF button Is pressed.
2
DCFM8906_Manual 7/3/03 2:43 PM Page 2
