12
The plate and U-Bolts are not yet needed at this stage but doing this
now may help avoid damaging wind vane and wind speed cups later on.
5.2.2. Install wind vane
Push the wind vane onto the shaft on the top of the sensor, unitl it goes
further, as shown in figure 3.
Tighten the set screw, with a Philips screwdriver(size PH0), until the
wind van cannot be removed from the axle, as shown in figure 4. Make
sure the wind vane spin freely. The wind vane’s movement has a small
amount of friction, which is helpful in providing steady wind direction
measurements.
Figure 2