CHECKING THE SPEED CALIBRATION
To check that the calibration points are not too far from the ideal linearity, the
Calibration – GRAPH menu will plot the calibration points on the screen. The
user may use up (↑) and down (↓) to select a calibration point and then adjust
that value by pressing SET on the relevant point. The MENU button will return
you to the GRAPH menu again.
Calibration should occur or be checked whenever the sensor is moved, or a
new sensor is mounted. If there is growth on the sensor over time, the speed
may be reduced slightly. The system should then be re-calibrated.
Note: If a new sensor is mounted, the calibration in the Compact speed
log may be useable. However, it should be checked.
WATER TEMPERATURE OFFSET
An offset can be added to the measured water temperature from the DL1
sensor. The calibration is a linear offset to the measured value. The calibration
– (TEMP) menu will allow the user to adjust the water temperature with an
offset value. Both calibrated (C) and measured (M) temperature are shown on
the screen.
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