Vaisala WAA151 - Manual (Page 12)

User's Guide ________________________________________________________
10 _____________________________________________________ M210349en-A
In general, any object of height (h) will not remarkably
disturb wind measurement at a minimum distance of 10
× h.
There should be at least 150 m open area in all directions
from the mast. Refer to Figure 2 on page 9.
0204-041
Figure 3 Recommended Mast Length on Top of a
Building
The recommended minimum length (marked with the letter
h in Figure 3 above) for the mast that is installed on top of a
building is 1.5 times the height of the building (H). When
the diagonal (W) is less than the height (H), the minimum
length of the mast is 1.5
× W.
Installation Procedure
When installing the equipment for example in tropical,
marine, or cold temperature environments it is important to
note that the equipment is kept within its specific operating
conditions. The cables must be terminated properly by
tightening the cable glands to avoid dust, dirt or water to
enter the equipment.