2 mounting, Mounting, S/n 0631 to current) – Campbell Scientific CSAT3 3-D Sonic Anemometer User Manual

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CSAT3 Three Dimensional Sonic Anemometer

4.2 Mounting

The current mounting configuration for the CSAT3 includes a CM250

Leveling Mount, which should be mounted on the end of a 1.31-inch diameter

crossarm such as the CM20X. Mount it so that the bolt on the end points

upward, and secure it in place by tightening the set screws with the 3/16-inch

Allen wrench that came with the CM250. The CSAT3 is then mounted to the

CM250 by screwing the bolt into the anemometer block. See FIGURE 4-1.

Do not carry the CSAT3 by the arms or the strut between

the arms. Always hold the CSAT3 by the block, where

the upper and lower arms connect.

Older CSAT3s were mounted with a boom design. In this case, the sonic

anemometer is mounted to a vertical 3/4-inch diameter US bore pipe with a

3/4-inch by 3/4-inch crossover fitting (pn 1017). The fitting is included with

the CSAT3. The fitting will accommodate up to a 1-inch outside diameter

pipe. Attach the crossover fitting to the vertical pipe and lightly tighten the

vertical set screws. Insert the horizontal mounting arm into the crossover

fitting and lightly tighten the horizontal set screws. Point the horizontal arm

into the prevailing wind. Tighten all the fitting set screws. Mount the

anemometer head to the horizontal arm. Lightly tighten the bolt underneath the

Over-tightening bolts will damage or deform the

mounting hardware.

Attach the electronics box to the body of the tripod or tower. Make sure the

connectors are pointing downward and the CSAT3 label is right-side-up. Use a

1/2-inch wrench to tighten the nuts. Connect the cable from the anemometer

head to the connector on the electronics box labeled Transducer Head.

FIGURE 4-1. CSAT3 coordinate system and current captive mounting

hardware (s/n 0631 to current)

CAUTION

1.31-inch OD Crossarm

26559 CM250 Leveling Mount