Operator`s manual

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Installation, Operation and Maintainance of Buoy Operated Automatic Meteorological Stations
3.5 KVH C100 Compass Engine (SE-25 Sensor)
3.5.1 General
The automatic buoy meteorological stations contain two wind monitors for measuring wind speed and wind direction
installed at 2 meters and 4 meters height. However, as obvious from its name, the buoy stations are subject to pitch
and roll movement whereby the wind monitor cannot measure the right wind direction. To correct the wind direction
error, the compass sensor is used in combination with the wind monitor sensors. The C100 is a small, accurate,
magnetic heading sensor, which can be configured for different specific requirements. The C100 compass engines
are compatible with the Campbell Scientific CR10X dataloggers. Campbell Scientific supplies only a housed version
of C100 with the SE-25 sensor. The housing is weather proof, can be mounted outside, and comes with a 15 feet
cable.
3.5.2 Installation
Prepare locally a support arm for the C100 compass engine to place on. Since the C100 compass engine has a
magnet, the support arm should be made of aluminum or other non-magnetic material. Placing the compass on or
near the iron may give wrong readings.
If the C100 compass engine is used on a buoy in combination with the RM Young Wind Monitor, the “FORWARD”
arrow on the C100 must be oriented towards the opposite direction of the RM Young Wind Monitor’s terminal box i.e.
if the terminal box faces South, the “FORWARD“ arrow must face towards the North.
Sensors
Figure 12: C100 Compass Engine (SE-25 Sensor) placed on a support arm.
Attach the C100 wires to the wiring panel of the CR10X datalogger according to the wiring diagram in table 1 in
paragraph 2.2, and Annex 2, as follows:
- Shield wire to terminal G
- White wire to terminal 12V
- Orange wire to terminal H6
- Jumper from L6 to G
- Black wire to terminal G