USER'S GUIDE____________________________________________________________________
48 __________________________________________________________________ M211095EN-C
WARNING
Make sure that you connect only de-energized wires.
WARNING
Using a long cable between different units (sensors, transmitters, power
supplies, and displays) can cause a lethal surge voltage, if a lightning
strike occurs in the vicinity. Always apply proper grounding procedures
and follow the requirements of the local Electrical Code.
WARNING
Do not install WMT700 when there is a risk of thunderstorm or lightning
activity in the area.
Alignment
WMT700 is permanently marked with the letter N and a north arrow.
WMT700 needs to be aligned in such a way that this arrow points to the
north. Misaligning WMT700 causes a wind direction offset error in the
measurement results, see Figure 22 on page 49.
To align WMT700:
1. Determine whether the array of WMT700 is correctly aligned with
a compass or other similar method.
2. If the alignment is not correct, readjust the orientation as follows:
- When installing WMT700 on a vertical mast, rotate the FIX70
mounting kit so that the north arrow and the north transducer
point to the north in the measurement location. Do not remove
WMT700 from the mounting kit during the alignment process.
Tighten the bolts of the FIX70 mounting kit.
- When installing WMT700 on a horizontal cross arm, rotate the
arm so that the north arrow and the north transducer point to the
north in the measurement location.
Figure 21 on page 49 and Figure 22 on page 49 show the correct
alignment and the measurement error caused by the misalignment
of WMT700.
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