Vaisala WXT520 Uživatelská příručka stáhnout pdf (Strana 44)

User’s Guide ______________________________________________________________________

42 __________________________________________________________________ M210906EN-C

Wind Direction Offset

Make a wind direction offset in case WXT520 cannot be aligned in such

a way that the arrow on the bottom points to the north. In this case, the

deviation angle from the true north should be given to WXT520.

1. Mount the transmitter to a desired position, see section Mounting

on page 34.

2. Define the deviation angle from the north-zero-alignment. Use the

± sign indication to express the direction from the north line (see

example pictures).

3. Feed the deviation angle to the device by using the wind message

formatting command aWU,D (direction offset), see section

Checking the Settings (aWU) on page 107.

4. From now on, WXT520 transmits the wind direction data by using

the changed zero-alignment.

0505-201

Figure 19 Wind Direction Offset

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Vaisala WXT520 Uživatelská příručka Strana 44