Fuel Functions And Display; What The Fuel Computer Does; Fuel Window - NorthStar EXPLORER 557 Installation And Operation Manual

10 Fuel functions and display

The Fuel functions require optional petrol/gasoline, diesel or SmartCraft™ fuel sensors to be installed and
set up.

10-1 What the fuel computer does

Each engine has a flow sensor installed to
measure the engine's fuel flow.
The 557/567 uses these flows, together with boat
speed and engine RPM if available to estimate the
fuel remaining in the tank(s), fuel used, range and
fuel economy. This data is displayed on the fuel
window (see section 10-2).
You can:
display the fuel used during a trip
(see section 10-2)
set low fuel alarms (see section 10-4)
make fuel consumption curves - graphs
of fuel consumption and boat speed as a
function of engine RPM - to monitor and
optimise boat performance.
(see section 10-6)

10-2 Fuel window

To go to the Fuel window, press
More, then select Fuel.
The display differs according to the number of
engines and tanks. If engine RPM is available
and if you have made and selected a Fuel
Consumption Curve (see section 10-6), press
to switch between a Summary or a Fuel curve
display.
The Fuel window shows
Speed
To select a boat speed sensor, see section 10-5-1.
RPM (if available)
If engine RPM is not available, the display shows
depth.
Remaining
The fuel remaining in the tank(s) is shown as a
vertical gauge on the right of the display. The
height of the yellow bar(s) show how much fuel
remains in the tank(s). If you have set a low fuel
alarm (see section 10-4), a red bar shows the level
at which the alarm will trigger. If there are two
tanks, the left bar shows the port tank, the right
bar shows the starboard tank.
, select
Northstar Explorer 557/567 Installation and Operation Manual
WARNING
!
To ensure the fuel data is accurate:
When you add or remove fuel from a
tank, tell the 557/567 (see section 10-3)
If the boat has petrol/gasoline sensors,
calibrate them during installation or if
the fuel readings seem inaccurate (see
section 10-7)
Choose an appropriate type of boat
speed sensor to calculate economy,
range and the fuel consumption curve
(see section 10-5)
If the boat uses a paddlewheel sensor
to measure speed, calibrate it during
installation or if the speed readings seem
inaccurate.
Used
The fuel used during a trip. On a multi-engine
boat, the data for the port engine is on the left of
the display.
When you want to start measuring how much
fuel is used, go to the Fuel window and:
In a single engine boat, press
select Clear used.
In a multi-engine boat, the fuel used by each
engine and the total fuel used are shown.
Press , select Clear used and
select:
Port or Starboard to clear the fuel used
by one engine
Both to clear the total fuel used.
Fuel flow
The fuel flow for the engine(s). On a multi engine
boat, the data for the port engine is on the left
of the display. Use the flows to check the load of
each engine.
and
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