Installation Manual _________________________________________________________________
96 __________________________________________________________________ M210485EN-B
NOTE
Do not remove the plastic cover from the end of the pole mast.
10. Attach the sensor adapter to the pole mast tube so that when the
mast is erected, the transducer head marked with "N" is closely
aligned for north and the transducer head marked with "S" is
closely aligned for south. For more information, see Figure 82
on page 97. To make the alignment procedure easier, mark (for
example, with paint or colored tape) the sensor body to indicate
the north and south transducer heads so that you can easily see
them from the ground.
11. Tighten the mounting clamp bolt using the correct size Allen
key.
12. Erect the mast and check that the sensor is correctly aligned at
the accuracy required for the intended use. The sensor is
correctly aligned when the transducer heads are exactly in line
with the compass pointing to true north or magnetic north. See
Figure 81 below and Figure 82 on page 97.
Wind direction can be referenced to either true north, which uses
the earth’s geographic meridians, or magnetic north, which is
read with a magnetic compass. The magnetic declination is the
difference in degrees between true north and magnetic north as
presented in Figure 81 below.
0209-024
Figure 81 A Sketch of Magnetic Declination
NOTE
Your source for magnetic declination must be current because
declination changes over time.
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