Connections, 151 series wind sensors – Vaisala WAA151 User Manual
Page 15
Chapter 3 __________________________________________________ Installation
VAISALA__________________________________________________________13
The following numbers refer to Figure 6 on page 12:
1
=
Anemometer Cup assembly
2
=
Wind Vane Tail assembly
3
=
Cross arm
4
=
WAC151
5
=
Connector
6
=
Mounting flange
7
=
South
8
=
North
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 ground the mast equipment case close to
the mast with a short and low-resistance cable.
Connections
At the factory, the cables are connected for the 151 series
wind sensors. If you install 252 series wind sensor
combination, you have to change the connections in the
junction box of WAC151 Cross Arm.
151 Series Wind Sensors
Usually both 151 series wind sensors are connected to the
junction box of the WAC151 cross arm simultaneously.
Figure 7 on page 14 illustrates the standard wiring diagram
for the 151 series wind sensors. The thermostat switch in the
upper left corner is always included for temperature control
of the shaft heating power.