Vaisala WAA151 User Manual download pdf (Page 12)

User's Guide ________________________________________________________

10 _____________________________________________________ M210293en-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. Minimum distance between the mast and

obstacles is ten times the height of an obstacle. Refer to

Figure 2 on page 9.

0204-041

Figure 3 Recommended Mast Length on the Top of

Building

The recommended minimum length (marked with the letter

h in Figure 3 above) for the mast that is installed on the 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

Mounting

Sensor installation is most convenient when you use a

Vaisala manufactured cross arm for mounting the sensor.

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Vaisala WAA151 User Manual Page 12