Vaisala WAA151 Installation Manual Page 81

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Chapter 4 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 79
5. Connect the signal cable to MAWS (see section Connecting
Cables on page 129).
1
3
4
2
9901-005
Figure 67 Mounting the Wind Sensor
After mounting the sensor, you have to align the wind vane:
1. Turn the nose (number 1 on Figure 67 above) of the vane to a
known point of compass (e.g. north).
2. Give command winddircal0 with the known direction reading
(e.g. winddircal0 360. This will set the current direction to the
north, 360 degrees).
WT521
The cables from the sensors are already connected to the WT521
transmitter by the manufacturer.
When installing the equipment for example in tropical, marine, or cold
temperature environments it is important to note that the equipment is
kept within its specific operating conditions. The cables must be
terminated properly by tightening the cable glands to avoid dust, dirt
or water to enter the equipment.
WARNING
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 ground the mast equipment case
close to the mast with a short and low-resistance cable.
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