Campbell Wind Monitor Series, Product Manual

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7.4.1 Mounting the wind monitor to a crossarm
Install the wind monitor by using:
l
Unthreaded aluminum pipe, 1-inch IPS, 12-inch length
l
CM220 Right-Angle Mounting Kit ( FIGURE 7-2 (p. 13)), or
l
1-inch-by-1-inch Nu-Rail Crossover Fitting ( FIGURE 7-3 (p. 13))
1. Secure the propeller to its shaft by using a wrench to tighten the nut provided with the
sensor.
2. Mount a crossarm to a tripod or tower.
3. If a pyranometer is also being mounted on the crossarm, orient the crossarm north-south
with the Nu-Rail on the end farthest from the equator. Otherwise, the crossarm may be
oriented north-south, east west, or any other angle desired.
Wind direction sensor
orientation (p. 21) contains detailed information on determining true north by using a
compass and the magnetic declination for the site.
4. Secure the 12-inch aluminum pipe to the Nu-Rail fitting. The aluminum pipe is shipped
with the wind monitor.
5. Place the orientation ring, followed by the wind monitor on the aluminum pipe.
6. Orient the junction box to the south, and tighten the band clamps on the orientation ring
and aluminum pipe. Final sensor orientation is done after the data logger has been
programmed to measure wind direction as described in
Wind direction sensor orientation
(p. 21).
7. Use the torpedo level to ensure that the wind monitor is level.
8. Insert the cable through the ferrite choke center hole, loop the cable over the top of the
ferrite choke, and reinsert the cable through the ferrite choke center hole (see the
following figure).
CAUTION:
Must install the ferrite choke on the cable near the sensor to meet EMC compliance.
FIGURE 7-1. Ferrite choke installed on cable
Wind Monitor Series 12