Ceilometer CT25K
CT25K-U059en-2.1 User’s Guide
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Thermal switches (K1, K2):
- switch temperature 95 - 105°C
- nominal current 2.5A
- operating voltage 250VAC
5.3.11 Tilt Angle Sensor CT3675
The built-in tilt angle sensor CT3675 enables accurate cloud base
measurements in a tilted direction. See section 2.4 for information about
alternatives on how to use the tilt feature.
Figure 5-16 CT3675 Tilt Angle Sensor
The tilt angle sensor CT3675 contains a silicon micromechanical acceleration
sensor. It measures the Earth’s gravitational force as projected on the
ceilometer axis. Every change in its position from vertical results in a
measurement signal dependent on the angle, which ranges from -15 to +90
degrees from vertical. Internal temperature compensation and linearization
circuits provide high stability. The output voltage of the angle sensor is
digitized through the processor board A-to-D converter and used for
automatic correction calculation, which enables accurate function in a tilted
direction. Automatic correction can be disabled with command SET
MESSAGE ANGLE_COR OFF. Tilt angle can also be set manually, as
described in section 4.7.
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