(number 0) button. The lower four digits will become blank, and anemometer wait for users to enter.
5. Press the OPTION button several times until none of AVE or 2/3VMAX is shown in LCD.
6. Users enter free area by pressing the numerical keypad. After free area is entered, press ENTER
button to end. The anemometer will also automatically exit entering if all 4 digits are entered.
7. Determine the approximate wind direction.
8. Hold the anemometer so that the air flow will pass through the vane from the back to the front (the
back: where the mounting nut is; the front: where engraving of ANEMOMETER is).
9. Wait for 2 seconds for a stabilized reading. The flow value equals velocity time’s free area.
10. For more accurate results, try to keep the axis of the vane within 20
°
of the wind direction.
3.4. Measurement of Wind/Air Flow (2/3Vmax Air Flow)
1. Press the on/off button to turn on the anemometer.
2. Select anemometer function by pressing the VEL/FLOW button (number 4). FLOW symbol will appear
in LCD.
3. Select the desired unit (CFM or CMM) by pressing the unit button (number 3).
4. The previous stored free area will be displayed in upper LCD. To enter new free area, press AREA
(number 0) button. The lower four digits will become blank, and anemometer wait for users to enter.
5. Press the OPTION button to select 2/3VMAX method.
6. Users enter free area by pressing the numerical keypad. After free area is entered, press ENTER
button to end. The anemometer will also automatically exit entering if all 4 digits are entered.
7. Determine the approximate wind direction.
8. Move around the center of free area to measure the maximum velocity of wind velocity. The
anemometer will record the maximum value and use it to calculate the wind flow.
9. For more accurate results, try to keep the axis of the vane within 20
°
of the wind direction.
3.5. Measurement of Wind/Air Flow (Average Air Flow)
1. Press the on/off button to turn on the anemometer.
2. Select anemometer function by pressing the VEL/FLOW button (number 4). FLOW symbol will appear
in LCD.
3. Select the desired unit (CFM or CMM) by press the unit button (number 3).
4. The previous stored free area will be displayed in upper LCD. To enter new free area, press AREA
(number 0) button. The lower four digits will become blank, and anemometer wait for users to enter.
5. Press the OPTION button to select AVE method.
6. Users enter free area by pressing the numerical keypad. After free area is entered, press ENTER
button to end. The anemometer will also automatically exit entering if all 4 digits are entered.
7. Press the START button (dot) to clear the upper LCD to zero.
8. Determine the approximate wind direction.
9. Select measuring point in the free area. Once a point is selected, press the NEXT button (dot) to
average the wind flow. The value in the upper LCD will increment by one to indicate how many points
have been averaged. The maximum number of points is 12.
10. For more accurate results, try to keep the axis of the vane within 20
°
of the wind direction.
3.6. Holding the Reading
Press the hold button to hold the reading of values in LCD.
3.7. Finding the Maximum or Minimum values
Press the MAX/MIN button to record the maximum or minimum values of wind velocity and temperature
or flow.
FLOW
=
VELOCITY
´
(
FREE
AREA
)
