Operation - Extech Instruments AN200 User Manual

Operation

Connecting the Vane
Air Velocity Measurements
Air Velocity Measurements (Up to 20 Point averaging)
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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.
1. Turn on the meter using the
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.
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.
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ON/OFF button.
6
Side view of Vane
Arrow
airflow
AN200-en-GB_V2.6 4/15
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