Chapter 3 ______________________________________________________ Installation of the Mast
VAISALA _______________________________________________________________________ 41
CHAPTER 3
INSTALLATION OF THE MAST
This chapter provides instructions for preparing the installation and
selecting the site for the station. It also contains detailed information
on installing the tiltable pole mast.
Siting Criteria
Finding a suitable site for the MAWS201MP weather station is
important for getting representative ambient measurements. When
locating the weather station, consider the items presented in the
following sections. The descriptions are not comprehensive, for
further information refer to local and WMO recommendations.
Also note the tilting direction of the mast. When installed in the
northern hemisphere, the mast tilts to west. There should be a clear
area up to 9 m on the west side of the mast. The area should be free of
obstacles preventing the mast from being erected and tilted.
Soil Evaluation
Always, evaluate the soil to determine the appropriate type of the
foundation required. When designing the foundation, the local
construction companies must be consulted to find out about the soil
and frost conditions in your area. When the soil is frost-susceptible,
make sure to always use the proper insulation.
CAUTION
For mast base installation, the soil bearing capacity has to exceed
45 kPa (940 pounds-force/sq. foot).
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