WS150 User Manual
9
4.5 Masthead installation
Note: Perform linearization and calibration
(see section 4.6.1 and 4.6.2) before installing
the masthead on top of the mast by
connecting the masthead transducer directly
into the red connector on the WS150.
Proper planning for the location and installation of
the wind instrument and its accompanying hardware
provide maximum instrument accuracy. Refer to
the figures in section 4.5.2 for additional clarity
while performing the installation procedures.
Mount the Masthead Assembly pointing forward for
the best performance. The Masthead Assembly
may be pointed aft with some degradation in system
performance. Regardless of the Masthead
Assembly direction, the wind vane is pointed in the
desired direction and held firmly in place during
calibration.
4.5.1 Junction Box Installation
In most cases, it will be convenient to cut the
Masthead Cable in order to run the cable through the
mast and through the vessel. The Junction Box is
used to connect the two cut ends of the masthead
cable together.
1
Connect the Masthead Cable to the wind
instrument and route the wire to the junction
box. Cut the Masthead Cable to the wind
instrument at the Junction Box adding 6 to 12
4.4 Multiple Instruments
The model WS150 wind instrument can be connected to the model SL150 speed instrument to display true
wind speed direction and speed VMG data on the WS150 display. The WS150 may also be connected to the
RP150 system repeater or to any other instrument that will accept standard NMEA 0183 data. The NMEA
sentences are: VWT, VWR, MWV and VPW.
Fuji Plug
& Socket
Wind Transducer
Red
Black
Green
Blue
1A Fuse
+12 VDC
Ground
NMEA data to Wind
+ NMEA speed data
Speed Transducer
+ NMEA wind data
inches for cable stripping.
2
Remove the Junction Box cover and connect
the cut cable wires to the terminal strip.
Replace the cover.
Wire color and uses:
Red
+/- 12VDC
Green
Wind Speed
Brown
Wind Direction
White
Wind direction
Shield
Ground
4.5.2 Masthead Cable Installation
Secure the mounting block of the Masthead Cable
to the masthead plate of the spar. The mounting
block should be aligned as close to the centerline of
the vessel as possible to ensure proper performance.
Final alignment of the wind direction pointer is
accomplished by following the calibration procedure
(see section 4.6), if not performed prior to the
installation of the Masthead Assembly.
1
The mounting block should be used as a
template to drill the two screw starter holes
required. Attach the mounting block with the
supplied self tapping screws.
2
To accommodate the Masthead Cable, dill two
5/16" to 3/8" holes in the mast, one near the
top and one near the base. See Figure below.
These holes will accommodate grommets (not
provided) with 1/4" inner diameters. Insert a
grommet in each hole to prevent cable chafe.
