Campbell Scientific CSAT3 3-D Sonic Anemometer - Manual (Page 18)

CSAT3 Three Dimensional Sonic Anemometer
FIGURE 4-4. CSAT3 coordinate system and original noncaptive
mounting hardware (s/n 0107 to 0630)
4.3 Leveling
Over flat level terrain, adjust the anemometer head so that the bubble within
the level is in the bullseye. Over sloping terrain, adjust the anemometer head
so that the horizontal surface that the bubble level is mounted on is parallel to
the terrain. Firmly grasp the sonic anemometer block, loosen the bolt
underneath the block, and adjust the head accordingly. Finally, tighten the bolt
with a 9/16-inch wrench.
4.4 Fine Wire Thermocouple
A fine wire thermocouple (model FW05 and FWC-L35) can be mounted to the
side of the anemometer block to measure temperature fluctuations. Attach the
female connector from the FWC-L35 to the side of the anemometer with the
short screw (#2-56 0.437 inch, pn 3514) that was provided with the
thermocouple cover. Insert the male connector of the FW05 into the female
connector of the FWC-L35. Finally, attach the thermocouple cover to the
anemometer block, using the thumb screw, so that both the FW05 and FWC-
L35 connectors are covered.
5. Wiring
There are four military style connectors on the CSAT3 electronics box. They
are labeled as +12V SDM, RS-232, Transducer Head, and Analog Output.
Connect the cable from the anemometer head to the electronics box labeled
Transducer Head. The anemometer head cable is 2.13 m (7 ft) in length. Each
of the signal cables is 7.62 m (25 ft) in length. Connect the appropriate signal
cable to the electronics box. See the TABLE 5-1 through TABLE 5-8 for
details on the wire color scheme.
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