Simrad NX40/45 Installation and Operation Manual
58
13-7 Calibration
Calibrate petrol/gasoline fuel flow sensors during
installation, or if the fuel readings seem inaccurate and
the other troubleshooting suggestions do not help (see
Appendix B troubleshooting).
Note
SmartCraft fuel sensors are factory calibrated and
•
should never need recalibrating.
On a multi engine boat, calibrate each engine’s
•
sensor. This can be done at the same time with a
portable tank for each engine or at different times
using one portable tank.
Calibrating
a
sensor
requires
accurate
•
measurement
of
the
fuel
consumption.
This is best done using a small portable tank. At
least 4 gallons (15 litres) of fuel should be used to
ensure an accurate calibration.
• It is often very difficult to fill underfloor tanks to the
same level twice due to air pockets, so the more fuel
used, the more accurate the calibration.
To calibrate the sensor(s)
Record the level of the fuel in the tank(s).
•
Connect the portable tank(s) to the engine through
•
the fuel sensor(s).
Run the engine at normal cruising speed until at
•
least 4 gallons (15 litres) of fuel has been used per
engine.
Check the actual amount of fuel used per engine by
•
refilling the portable tank(s) to the original level and
noting the reading(s) of the fuel dispenser’s gauge.
•
>
>
Fuel
>
Setup engines
On a single engine boat, select
•
Calibrate
and change
the shown value to be equal to the reading of the
fuel dispenser’s gauge, then press
.
On a multi-engine boat select the engine. Select
•
Calibrate
and change the shown value to be equal
to the reading of the fuel dispenser’s gauge, then
press
. Repeat for the other engines.
