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NMEA 2000-Certified Sensor Configuration Information

GFS 10 (Garmin Fuel Sensor)

CautioN: The GFS 10 is a sensor that helps you better determine the amount of fuel used on your boat. You should not rely solely on the GFS 10 for

fuel-level information. Carefully compare information displayed on the unit to all available fuel-level instruments and sources.

Using Fuel-Flow Information With a Garmin Chartplotter or Marine Instrument

CautioN: The Garmin chartplotter or marine instrument must be powered on to calculate remaining fuel based on the fuel-flow rate.

important: When using the GFS 10 to calculate remaining fuel based on the fuel-flow rate, you must specify the amount of fuel each time you

add fuel to the tank.

To specify the amount of fuel added:

1. While viewing the fuel page or fuel instrument screen on your NMEA 2000 device, select Menu.

2. Choose from the following options:

•

Fill Up

Tank—set the fuel level to the maximum capacity.

•

Add Fuel to

Boat—specify the amount of fuel added.

•

Set Total Fuel

Onboard—specify the amount of fuel currently available in the fuel tank or tanks.

Changing the Fuel Economy Source

The Garmin chartplotter or marine instrument requires a speed sensor, in addition to the GFS 10, to calculate fuel economy.

To change the fuel economy source:

1. While viewing the fuel page or fuel instrument screen on your NMEA 2000 device, select

2. Select either

GPS Speed

Using Fuel-Level Information With a Garmin Chartplotter or Marine Instrument

To receive fuel-level information, connect the wiring harness on the GFS 10 to the fuel gauge or fuel-level sensor of your boat according to the

GFS 10 Installation Instructions.

To calibrate fuel-level information from the GFS 10:

1. While in still water, on the NMEA 2000 device configuration menu, select the GFS 10 device that is connected to the fuel tank you want to

configure.

tiP: The serial number of each GFS 10 is shown on the NMEA 2000 device configuration screen to help differentiate among multiple GFS 10 devices.

2. Select

Config

Level Calibration

fuel tank.

Entering more calibration points will provide a more-accurate reading. For example, entering five calibration points (empty tank, 1/4 tank, 1/2

tank, 3/4 tank, and full tank) will provide a more-accurate reading than entering two calibration points (empty tank and full tank).

tiP: For a quick calibration, start with an empty tank, and enter calibration points as you fill up the tank.

To reset the fuel-level calibration:

1. While viewing the NMEA 2000 device configuration menu, select the GFS 10 device that is connected to the fuel tank you want to configure.

2. Select

Config

Level Calibration

Water Speed

to specify which speed sensor is used to calculate fuel economy.

Add Calibration Point

Reset

Calibration.

and enter a calibration point that corresponds to the current fuel level in that

Fuel Economy

Source.

Technical Reference for Garmin NMEA 2000 Products