2021-06-24
Page 31 of 38
CU-M001 User manual
Calibration, Temperature
Speed sensors have a temperature sensor placed close to the front face of the transducer. This is
designed to measure the water temperature. Although adjusted at the factory, In some installations
the heat generated by the sensor may slightly change the temperature sensor offset. This can be
adjusted using the temperature calibration page.
The Calibration has two points, one below 10 degrees and 1 above 10 degrees. Enter correct
temperature and the current measured temperature.
Calibration, Tilt
The sensor includes a gravity based sensor to measure the motion of the vessel. This is used to
compensate the measured speed as the vessel pitches and rolls. Rapid measurements allow the
system to compensate for tilt and acceleration.
The sensor is calibrated at the factory, but if the user wishes to use the tilt values, the sensor axis,
may need to be rotated to fit the vessel. This is done by by nulling the sensor when the vessel is
trimmed to zero pitch and zero roll.
This is done by using the Tilt Calibration screen. This screen shows the current tilt and the amount
of movement of the vessel. This should be nulled in harbour.
The tilt sensors can be nulled using the null button on the calibration screen. If the vessel is listing,
the user can add the actual list as an offset calibration. The tilt sensor is used for correction of
the speed due to heavy rolling of the vessel. It has not been approved as an inclinometer, and is
therefore not reported out of the system.
