This button provides
several functions:
Selects individual
digits in the “Free Area”
number for which you want to
change the value. For example, in
1.111, with this button you can
select the second “1.” Using the
HOLD / ADVANCE button, you
can then change the second digit to
1.211 or higher (see HOLD /
ADVANCE above).
Displays multipoint averages for
FPM, and the number of points
measured.
Auto Power Off
If powered and unused, the unit will
turn off after 20 minutes to save the
battery. Auto shut-off wull be
proceeded by three beeps. To restart,
simply press the ON button.
Non-Sleep Mode
To bypass “Auto Power Off” for
continuous operation follow these
steps whn turning the unit on:
1. Press the ON and HOLD buttons
at the same time.
2. Release only the ON button.
3. After an “n” appears on the LCD,
release the HOLD button.
The 68915 will remain on until the
OFF button is pressed.
Specifications
Air flow ranges: 125 - 4900 ft/min
(0.7 - 25 m/sec)
Flow resolution: 1 (0.01)
Flow accuracy: ±2%
Temperature: 14 to 122°F
(-10 to 50°C)
Temp. resolution: .01 (0.1)
Temp. accuracy: ±1.0°F (±0.6°C)
Power: 9 volt/100 hour
Fan diameter: 2-7/8” (70mm)
Measuring Air Velocity (FPM)
(See changing to metric on page 6)
SINGLE POINT FPM
1. Turn unit on by pressing ON/OFF
button.
2. Unit is ready when LCD
shows “vel” in upper left and
temperature
at lower right
(fig. 2).
3. Hold vane probe head in
front of the air source for a
measurement
in FPM
(fig. 3).
•
vel
0080
ft/m
72.3
°F
Fig. 3
NEXT DIGIT
→
MULTI-POINT
AVERAGE
•
UPC# Description
68915 Anemometer
68916 Replacement 2.75 (70mm)
probe assembly
vel
0000
ft/m
70.2
°F
3
