User's Guide _______________________________________________________________________
30 ___________________________________________________________________ M210243en-A
Sensors
Wind Sensor
0201-008
Figure 11
QMW101 Wind Sensor
QMW101 and QMW110 are compact sized wind sensors with the
wind speed and direction sensors integrated into one unit. A single
compact sensor is ideal for low-power applications. The rotating cup
anemometer at the top of the unit provides isotropic and linear
response to wind speed. The vane attached to the body of the unit
provides fast response to wind direction. Direction is detected using
an axial symmetric rotating potentiometer with two slides, thus
providing a full range from 0 to 360°, while speed is converted into
pulses using dual reed relay.
The cup wheel shape, dimensions and material have been carefully
designed to achieve maximum quality of measurement. The conical
cups have been tested to give linear response between wind speed and
angular velocity of the cup wheel. The polyamide plastic reinforced
with carbon fiber guarantees a rigid structure even at the highest wind
speeds.
The balanced wind vane is integrated in the housing, underneath the
cup wheel. The circular tail is located far enough from the body and
the cup wheel to avoid turbulences due to these structures. The vane
assembly is of PA (reinforced with glass fiber) providing durable and
lightweight structure with fast response and low inertia.
