Operating the fan anemometer
50
5.8 Displaying the average value
The fan anemometer calculates the time-averaged and multi-point average of all
measured quantities.
5.8.1 Average value deter-
mined over time
Fig. 9: Time-averaged value display
In the normal Measuring mode, press and
hold the Up key for 2 seconds to access the
Multi-point average mode.
Press the key again briefly to access the
Time-averaged reading mode.
A clock and AVG are shown in the display.
Fig. 10: Average value determined over
time
Press the HOLD/MIN/MAX key to start the
measurement.
Direct the fan anemometer slowly and steady
over the entire area of the air passage.
Press the Up key to end measurements.
NOTE!
Make sure to stop the measurement by pressing
the button immediately after the data record has
been finished, because the calculation of the av-
erage will not be correct, if the average measure-
ment mode is stopped after the device has been
removed from the air passage.
The duration of the measurement is displayed in
the top part of the display; the average value is
displayed in the lower part of the display. AVG
flashes.
Press the Down key to toggle between the
average values of the different measured
quantities.
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