Campbell SkyVUE 8, Product Manual

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4.4 Tilt angle
The SkyVUE 8 can be tilted 6°, 12°, 18° or 24° from vertical. In tropical regions, tilting the sensor
north in the northern hemisphere and south in the southern hemisphere can prevent the sun
from shining directly into the sensor. The tilt angle also can reduce problems caused by direct
specular reflections from ice crystals, and prevent rain or snow from falling onto the window. To
adjust the tilt angle, remove the bolts shown in
FIGURE 4-2 (p. 17), move the SkyVUE 8 to the
required tilt angle, and replace the bolts.
The SkyVUE 8 has tilt sensors in both axes to compensate the cloud height when the base is not
level. Set or disable cloud height compensation by using the
UNITS command ( Terminal mode
command examples (p. 27)). This feature is useful for mobile or marine applications. Profile data
is NOT compensated but tilt angles are included in data messages.
NOTE:
Increasing the tilt angle beyond 24° can cause significant errors in vertical visibility
measurements if scatter coefficients vary significantly with height.
FIGURE 4-2. Setting the tilt angle
SkyVUE™8 (CS136) LIDAR Ceilometer 17