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AN500-EU-EN v1.5 1/13
4
Operation
Initialization and Zero
The meter should always be zeroed at temperature before use using the ZERO button. Do not
rely on the initial zero display.
Notes:
The meter does not display negative numbers.
Open antenna to desired length.
1. Connect the sensor to the input jack on top of the meter and open antenna to desired length.
2. Switch the meter ON using the Power button. The meter will perform a self-test during which the
display will show SELF CHECK.
3. Select the desired temperature units by holding in the C/F select button. The LCD will reflect the
selection.
4. Select the desired air velocity units using the UNIT button. The LCD will reflect the selection.
5. Place the sensor in the area to be measured and allow a short time for the sensor to reach the
temperature of the air under test.
6. Press the ZERO button to zero the meter.
Taking Air Velocity Measurements
1. Zero the meter as described above.
2. Place the sensor in the air current to be measured. Have the air flow in the direction of the arrow
shown on the top of the sensor head.
3. View the air velocity and temperature readings on the LCD Display. The top LCD display
indicates the Air Velocity reading. The lower LCD display indicates the temperature reading.
MAX/MIN Function
1. To begin capturing the Minimum (MIN), Maximum (MAX), and Average (AVG) readings, press
the MAX-MIN button momentarily. The RECORD icon will appear on the LCD (flashing on and
off).
2. Take readings as described previously.
3. Press MAX/MIN button again to stop recording.
4. The MAX-MIN-AVG display screens will automatically scroll from one to the next showing the
highest (MAX), lowest (MIN), and average (AVG) readings captured since the MAX-MIN button
was first pressed.
5. Press the MAX-MIN button again to continue recording. The RECORD icon will continue
flashing.
6. Press and hold the MAX-MIN button for 1 second to exit the MAX-MIN mode and return to the
normal operating screen. The MAX-MIN-AVG readings will be reset.