Operation - Extech Instruments AN200 User Manual

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 dashed lines in place of an air velocity reading.
Air Velocity Measurements
1. Turn on the meter using the
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. Refer to
the diagram.
4. View the air velocity and temperature 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 Measurements (Up to 20 Point averaging)
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 all desired 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.
ON/OFF
Side view of Vane
6
Arrow
airflow
AN200 V2.1 05/07