Operating the fan anemometer
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
Fig. 10: Average value determined over
time
50
•
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.
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.