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Capricorn II Plus User Manual
Rotate the vane and rain cap counterclockwise; stop as soon as the NNW light is
illuminated. Make a second pencil mark on the sensor body which is directly below
the pencil mark on the rain cap (that was made in the previous step).
Divide the distance between the two marks on the sensor body, and mark that point
with a pencil. This center mark indicates north in relation to the console display.
Rotate the rain cap so that its mark aligns with the middle mark on the sensor body.
Secure the rain cap to the sensor body with a piece of tape so that the rain cap
cannot rotate around the sensor body.
Disconnect the wind sensor wires from the console back panel and prepare to take
the Wind Sensor Assembly to the roof for the final installation procedure.
Installing the Mast
The Capricorn II Plus will measure wind speeds of up to 125 mph (200 km/h).
However, unless the Wind Sensor Assembly is properly mounted to withstand such
high winds, this capability is useless. Please read these instructions carefully to
insure a safe and reliable installation. Mounting the mast and the wind speed and
direction sensors should be comparable in scope to installing a TV antenna.
There are three acceptable methods for mounting the mast to a roof or building
structure. Sloped roof mounting, flat roof mounting or wall mounting. See Section 4:
Optional Sensor Mounting Hardware for more information.
Location
Do not attach the Wind Sensor Assembly to a chimney or a TV or radio transmitting
mast or tower.
Select a mounting location that will allow the Wind Sensor Assembly cables to be
routed away from TV antenna cables and other data cables to avoid interference.
Do not mount sensors close to power lines or telephone lines. For normal roof
mounting, the recommended minimum distance from power or telephone lines is 25
ft. (8 m). Use extreme caution when working close to power lines
Never route sensor cables in tall trees.
Mounting Method
Choose the appropriate mounting method for the installation and obtain the neces-
sary mounting hardware. Refer to Section 4 for information on optional sensor
mounting hardware and accessories which are available from the factory.
If the mounting hardware is not obtained from the factory, be certain to use metal
parts which are plated or galvanized to assure maximum longevity.
In marine locations (or other areas) which experience severe corrosion problems, a
watertight, rubberized spray coating is recommended. This can be sprayed on all
metal parts from the cross arm support down (not the wind sensors) after the instal-
lation is completed. Refer to Columbia Weather Systems Cat. No. 83500 as noted in