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AN200-EU-EN-V2.5-6/13
7
Air Flow Measurements (CMM / CFM)
1. Turn on the meter using the ON/OFF button
2. Press the UNITS button to select the desired air flow units:
CMM (cubic meters per minute) or CFM (cubic feet per minute).
NOTE: At power up the meter will display the last unit of
measure previously entered.
3. To begin entering the area in m
2
or ft
2
, press and hold the
AREA button until it beeps twice. The leftmost digit of the
bottom display will begin to flash.
4. Use the ▲ (UP) button to change the flashing digit
Use the ◄ (LEFT) button to move the decimal
Use ► (RIGHT) button to select the other digits.
After all of the digits are entered, press and hold the AREA
button (until meter beeps twice) to save the area into memory
and return to CFM or CMM measuring mode.
5. 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. The large main LCD display shows
the Air Velocity reading. The upper right LCD sub-display shows the temperature reading.
The meter has 16 memory locations (8 for CFM and 8 for CMM) that can be used to store commonly
used area sizes that you can recall at anytime.
1. Press the AREA button until meter beeps twice. A memory location number will appear in the
top right of the display indicating the memory location.
2. Push the AREA button to scroll thru and select the desired location. Once you have selected
the desired memory location enter your dimension
Use the ▲ (UP) button to change the flashing digit
Use the ◄ (LEFT) button to move the decimal
Use ► (RIGHT) button to select the other digits. After all of the digits are entered, press and
hold the AREA button (until it beeps twice) to save the area into memory and return to CFM or
CMM measuring mode.
To select and use a previously stored dimension, press and hold the AREA button until it beeps twice.
Press AREA to scroll thru the 8 memory locations. Press and hold the AREA button until it beeps
twice to return to the CFM or CMM measuring mode.
Air Flow 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. (IMPORTANT: Please note that the average readings are only held for 5 seconds and
cannot be recalled.)
4. Repeat steps 2 - 3 until all desired points have been measured.
5. Press the AREA button to clear the multipoint averaging memory.
6. To return to standard airflow measuring mode press and hold AVG button until meter beeps
twice.
airflow
Arrow
Side view of Vane