9
Storing Wind Speed or Air flow Data and Displaying the Mean Value
It is possible to store wind speed or air flow data in memory and display the mean value.
Note: The maximum, minimum, and mean values can also be displayed even during data storage.
(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) To store data, press the HOLD key to hold (freeze) the displayed value.
(4) Press the MIN/MAX RECORD key to store data in memory. The number of stored values will be
displayed for approximately one second and the data will be stored.
Data stored
Number of data
(5) Repeat Steps (2) to (4) to store data. Up to eight values can be stored.
(6) Press the MULTI-POINT AVERAGE key to display the stored mean wind speed value and the
number of stored values on the display.
(7) To clear the stored mean value, hold down the MULTI-POINT AVERAGE key. A beep sound will be
heard immediately after pressing the key. After approximately four seconds, a double beep sound will be
heard and the mean value will be cleared.
(8) The device returns to wind speed measurement mode.
Note: If you wish to display the mean airflow rate value, collect wind speed data as described in Steps
(2) to (4). When all data have been stored, enter the cross-sectional area. After the cross-sectional area
has been entered, airflow rate measurement mode is invoked. Press the MULTI-POINT AVERAGE key.
The stored mean air flow and the number of stored values will be displayed.
Holding Displayed Values
It is possible to hold (freeze) displayed values during wind speed or airflow rate measurement, as
follows.
(1) Press the HOLD key. The displayed value will be held (frozen).
(2) Press the HOLD key again to release the held (frozen) value.
