Alignment Of The Wind Vane - Observator Instruments OMC-150 Manual

Place the vane unit and mounting materials on the upper shaft in the following sequence:
1) Vane unit
2) Plain washer
3) Capped nut
Place the cup unit and mounting materials on the lower shaft in the following sequence:
1) Cup unit
2) Spring washer
3) Capped nut

6.6 Alignment of the wind vane

The wind direction sensor needs alignment to North. The wind direction sensor has on the wind direction
head a dot marking (figure 2). This dot marking is in most cases opposite of the mounting arm and must
be aligned to North.
REMARK : Depending on local circumstances, it may be more practical to first align the wind vane with
the sensor mounting bracket and adjust the wind vane shaft until the LED's light. The mounting bracket
can then be aligned to the North by rotating the complete mast, thus aligning the wind vane to the North.
Note that the accuracy of the wind direction reading of the OMC-150 anemometer depends fully on the
alignment of the vane!
Manual | OMC-150
Status: Final | Not confidential
The wind direction vane can only be installed in one
position on the axis due to a small iron pin. With the
sensor installed in such a way that the dot in pointing to
the North the indicator will show the correct wind direction.
Locate the North direction, using a hand hold compass or
similar. Unscrew the nuts of the complete sensor and
rotate the sensor so, that the red dot points to the North.
Figure 2 North alignment dot
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