Chapter 4 _______________________________________________________________ Installation
VAISALA_______________________________________________________________________ 39
Foundation
Soil and Frost Conditions
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 that you always use proper
insulation.
Orientation of the Mast
Refer to Figure 5 on page 40 for the orientation of the mast. The concrete
blocks for guy wires have to be placed so that the pole mast can be tilted
west (east in the southern hemisphere) by releasing only the detachable
guy wire 1; see Figure 5 on page 40.
To ease the orientation of the mast, the two-headed arrow is cut on the
orientation plate. "N" should face north and "S" should face south to
ensure the aiming of the weather station devices to the correct position.
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