User manual

32
10. MEASURING THE WIND SPEED
Pay attention to loose or ying objects at high wind speeds. They may cause injury.
The ow direction in the impeller sensor must be observed.
The wind speed is recorded with an impeller sensor with optical recorder. The ow speed it marked with an arrow in
the impeller housing (top inside). This ow direction must be observed to avoid wrong measurements.
Make sure that the impeller can move easily and freely.
Proceed as follows for measuring:
- Open the lateral cover and connect the plug of the impeller sensor (20)
to the round measuring socket (13).
- Switch on the meter by pushing the operating button (8).
- The meter always is in sound level measuring function “dBA” after
activation. Push the button “MODE” (9) 1x until the measuring range
“m/s” is displayed.
- Point the impeller sensor into the wind without lateral canting. The
arrow mark in the impeller housing must point into the ow direction.
- The display shows the measured wind speed in “m/s”.
- To switch the measuring unit, push the button “UNITS” (7). Every push
switches on the unit to “km/h”, “ft/min”, “Knots”, “Mph” and back to
“m/s”.
- After completion of the measurement, switch the meter off again by
pushing the operating button. Remove the sensor and close the lateral
cover.