Appendices
Appendix A: Re-orienting the Wind Vane
The Vantage Pro2 station is configured to register wind direction correctly if the anemometer points to true north. If the anemometer shaft cannot be mounted to point to true north, use the following instructions to correct the wind vane orientation.
•Do not rely on a compass unless it is properly calibrated. In North America there can be up to 15° variation between true north and a raw compass reading.
•Correct the wind direction readings by calibrating the wind direction in the Van- tage Pro2 console. See the Vantage Pro2 Console Manual for information.
•To orient the wind vane accurately, look at the console display. Have another per- son watch the console display while orienting the wind vane.
•Also,
To re-orient the wind vane:
1.Loosen the wind vane set screw.
2.Pull the vane directly up and off the steel shaft on which it turns.
3.Press WIND on the console to display current wind direction in degrees.
4.Use a reliable map, properly calibrated compass or a landmark to determine which direction is true south.
5.Slowly turn the
Wind Direction Chart
6.Allow the wind direction display approximately 5 seconds to stabilize after the shaft is turned. Turn the shaft, wait, and turn it again until 180° is displayed on the con- sole.
7.Being careful to keep the
8.Slide the wind vane down the shaft as far as it will go.
9.Use the Allen wrench provided to tighten the set screw on the side of the wind vane.
10.Test the anemometer by pointing the wind vane in any direction and making sure the console displays the correct wind direction. Remove and
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