12
of friction, which is helpful in providing steady wind direction
measurements.
Figure 4: Wind vane installation diagram
5.3.3 Install wind speed cups
Push the wind speed cup assembly onto the shaft on the opposite side of the
wind vane, as shown in Figure 5 on the left side. Tighten the set screw, with
a Philips screwdriver (size PH0), as shown on the right side. Make sure the
cup assembly can rotate freely. There should be no noticeable friction when
it is turning.
Figure 5: Wind speed cup installation diagram
5.3.4 Install Batteries in sensor package
Open the battery compartment with a screwdriver and insert 2 AA batteries
in the battery compartment. The LED indicator on the back of the sensor
package (item 9) will turn on for four seconds and then flash once every 16
seconds indicating sensor data transmission. If you did not pay attention,
you may have missed the initial indication. You can always remove the
