Dostmann Electronic VA893, User Manual

Page: 4 / 9

4
Operation
Connecting the Vane
1. The vane plug is inserted in the meter’s sensor jack at the top of the meter. The plug
and jack are keyed so that the plug can only fit in the jack one way.
2. Turn the plug carefully until it lines up with the jack and then firmly push the plug in
place. Do not apply undue force or try to twist the plug side-to-side.
3. If the vane is not connected to the meter or if the sensor is defective, the LCD display
will indicate OL in place of a Temperature reading.
Air Velocity Measurements (Single Point)
1. Turn on the meter using the ON/OFF button.
2. Press UNITS button to select the desired unit of
measure. NOTE: At power up the meter will
display the last unit of measure previously
entered.
3. Place the sensor in the air stream. Ensure that
the air enters the vane as indicated by the arrow
sticker placed inside the vane.
4. View the readings on the LCD Display. The
large main LCD display shows the Air Velocity
reading. The upper right LCD sub-display shows
the temperature reading.
Air Velocity Averaging Mode
1. To enter 20 Point Averaging Mode, press and hold the AVG button until it beeps twice.
The AVG icon will be displayed.
2. Take a measurement and press the AVG button. A single beep will sound and the
HOLD icon will appear in the display.
3. The average reading will be displayed and number of readings measured will appear in
the upper right hand corner of the display. After 5 seconds, the display will return to the
current reading.
4. Repeat steps 2 - 3 until the desired number of points have been measured.
5. To return to standard velocity measuring mode press and hold AVG button until meter
beeps twice.
Note: In the standard velocity measuring mode, press the AVG button once to recall the
previous average. The average will be cleared when you enter the Averaging Mode
again.
airflow
Arrow
Side view of Vane