7
the NEXT DIGIT
key to save the changed value in each digit. Each time the NEXT DIGIT
key is
pressed, the cursor moves to the next digit on the right.
(5) Set up the cross-section in the same way as in Step (4). The input unit is m
2
.
(6) After entering the cross-section, press the RECORD key. The numeric value stops blinking on the
device. Then, press the HOLD key. The entered cross-section will be registered in the device and air
flow measurement mode will be invoked. Note that pressing the HOLD key for more than one second
switches air flow measurement mode to the display hold state. If this happens, press the HOLD key
again to release the display hold state.
(7) Orient the probe in the direction of wind flow. Set the probe so that wind is flowing from the rear of the
probe to the front (the surface marked “CFM Master”).
(8) When the approximate direction of wind flow is determined, wait at least two seconds for the
measured values to stabilize before reading them.
(9) Upon completion of measurement, press the POWER key to turn off the power.
Caution
- If the measured airflow rate goes beyond the measurement range (99.00 m
3
/sec or less
), “
” will
appear on the display panel. Always use this device within the specified measurement range.
Measuring and Storing the Maximum, Minimum, and Mean Values
The device can measure and store the maximum, minimum, and mean values at a fixed measurement
point. The following is the method for measuring maximum, minimum, and mean values in wind speed
measurement mode (temperature measurement).
(1) Press the POWER key. Numeric values will appear on the display and wind speed measurement
mode will be invoked.
(2) Place the probe at the measurement point. Set the probe so that wind is flowing from the rear of the
probe to the front (the surface marked “CFM Master”).
(3) When the approximate direction of air flow is determined, press the MIN/MAX RECORD key twice.
“REC” will light on the display panel. The current wind speed and temperature values will be displayed
and storage mode will be invoked.
(4) To display the stored data, press the HOLD key to terminate storage mode before disconnecting the
sensor probe. Then, the HOLD key works as a key for terminating data storage. Note that the device will
continue storing data unless the HOLD key is pressed.
(5) To display the minimum wind speed and temperature values, press the MIN/MAX RECORD key once.
“REC” and “MIN” will light on the display panel and the stored minimum wind speed and temperature
values will be displayed.
(6) To display the maximum wind speed and temperature values, press the MIN/MAX RECORD key
again. “REC” and “MAX” will light on the display panel and the stored maximum wind speed and
temperature values will be displayed.
(7) To display the mean wind speed and temperature values, press the MIN/MAX RECORD key again.
