Lowrance electronic LMS-520C, LMS-525C DF manual 226

4.Press ↓ to select CALIBRATE and press ENT. The Device Calibration menu will appear.

5.Highlight NUM PTS, press ENT and select 3. Press ENT.

6.Make sure your tank is empty, then highlight FLUID LEVEL and press

ENT. Select EMPTY LEVEL and press ENT.

7.Select CALIBRATE and press ENT. The following message will appear: Empty Level Calibration Completed. Press ENTER.

8.Add half a tank of fuel, highlight FLUID LEVEL and press ENT. Select

HALF LEVEL and press ENT.

9.Select CALIBRATE and press ENT. The following message will appear: Half Level Calibration Completed. Press ENT.

10.Fill up the tank, then highlight FLUID LEVEL and press ENT. Select

FULL LEVEL and press ENT.

11.Highlight CALIBRATE and press ENT. The following message will ap- pear: Full Level Calibration Completed. Press ENT, then press EXIT re- peatedly to get back to the main display.

Num Pts menu with 5-point calibration selected (left). Half level selected on

Fluid Level menu (center). Calibration Done window (right). 5-Point Calibration

5-point calibration is best suited tanks that vary greatly in shape from top to bottom. You can begin calibration at any point in the 5-point cali- bration process. We recommend starting calibration with an empty tank. In a five-point calibration you will set five points: Empty Level, 1 Qtr Level, Half Level, 3 Qtr Level and Full Level.

In a 5-point calibration, you will have four calibration points left after calibrating your tank's Empty Level. To figure out how much fuel you should add for the remaining steps of the calibration process, divide the total capacity of you tank by four. So, if you have a 40-gallon tank, each quarter tank will equate to 10 gallons.

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