Lowrance HDS-7 HDS Gen3 Installation Manual page 42

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'Unconfi gure' is for defaulting the device clearing all user settings,
and 'Reset Fuel Flow' will restore only the 'Fuel K-Value' setting, if set
in 'Calibrate' . Only Navico devices can be reset.
Calibrate
While default calibration is usually accurate enough, it is possible
to apply further calibration to accurately match measured fl ow
with actual fuel fl ow. Access calibration from the 'Refuel' dialog.
Calibration is only possible on Navico's Fuel Flow sensor.
1. Start with a full tank and run the engine as it would normally be
operated.
2. After at least several litres (a few gallons) have been used, the tank
should be fully refi lled, and the 'Set to full' option selected.
3. Select the 'Calibrate' option.
4. Set the 'actual amount used' based on amount of fuel added to
tank.
5. Select OK to save settings. The 'Fuel K-Value' should now show a
new value.
 Note:
Not correctly following the calibration procedure could result
in erroneous fuel data.
 Note:
To calibrate multiple engines repeat the steps above, one
engine at a time. Alternatively, run all engines simultaneously, and
divide the 'Actual amount used' by the number of engines. This
assumes reasonably even fuel consumption on all engines.
 Note:
Calibrate option is only available when 'Set to full' is selected,
and a Fuel Flow sensor is connected and set up as a source.
 Note:
A maximum of 8 engines are supported using Fuel Flow
sensors.
Software setup | HDS Gen3 Installation Manual