Continuous Moving Average
1. Turn unit on.
2. Place vane probe head in front of
air flow source.
3. Press MIN/MAX RECORD button.
The unit makes a reading once a
second and displays a moving
average for up to two hours.
MIN/MAX/AVG
1. Turn unit on.
2. Place vane probe head in front of
air flow source.
3. Press MIN/MAX button and the
unit will begin recording.
4. Press HOLD button to store
readings before moving the vane
probe head away from the air
flow source.
5. Press MIN/MAX once to see AVG
velocity readings.
6. Press MIN/MAX again to see MIN
velocity readings.
7. Press MIN/MAX again to see MAX
velocity readings.
8. Press MIN/MAX again to return to
the velocity reading you stored with
the HOLD button.
9. Press ON/OFF RESET to clear the
MIN/MAX average readings.
NOTE: At any time you can use
MODE (SELECT) to switch from
FPM velocity to CFM flow readings.
Before switching, be sure the “Free
Area” number matches the open square
footage of the grill or duct you are
measuring (see page 5 for “Setting
Free Area Number”).
Multipoint FPM
1. Turn unit on.
2. Place vane probe head at first point
to be measured.
3. After you see the reading in the
LCD, press HOLD/ADVANCE.
Release the button when you hear
a single beep. The LCD will show
HOLD above
the reading
(fig. 4).
4. Press MIN/MAX RECORD.
Release the button when you hear
a single beep. The LCD will show
a number from 1-8 representing the
reading point that was saved
(fig. 5). The unit will return
automatically to the “vel” display
ready for the
next reading.
5. Repeat steps 2-4 until you’ve
measured and recorded all desired
points up to 8.
6. Press NEXT DIGIT/MULTIPOINT
button to view the average air
velocity and the number of points
measured
(fig. 6).
vel Hold
0075
72.3
°F
Fig. 4
ft/m
vel Hold
0075
1
°F
Fig. 5
ft/m
vel Hold
0068
8
Fig. 6
ft/m
AVG
4
