7.3 Fuel level sensors calibration
Before using the fuel level indications it's necessary to calibrate all the aircraft fuel tanks, following the procedure explained in this
chapter.
The calibration is divided in more calibration steps, in each step you will fill the tanks with predetermined fuel quantity. The
calibration end when the tank is completely filled.
It's possible to choose the fuel quantity to add at each calibration step (item “Calibration fuel step” in System setup-->Fuel level--
>Tanks setup menu), choose a proper value considering the tank capacity and how many calibration step you want to execute.
For example with a 40 liters tank and “Calibration fuel step” set to 2 it's required 40 / 2 =
20
calibration steps. The maximum
number of calibration steps is 50.
The “Calibration fuel step” parameter is used for all the 4 tanks calibrations, dont't modify it once you have choosed a value.
•
Begin calibration:
choose the tank to calibrate and select the relative item in the setup menu (System setup-->Fuel level--
>Tanks setup-->Left/Right/Main tank calibration). The display shows this screen (in the example that follow the unit of
measure are set to liters, the “Calib.step” is set to 5 and the tank choosed for calibration is the LEFT):
This screen is a calibration summary table:
every calibration steps is represented as a cell.
The first time you enter all the cells are empty
because no calibration is present.
To start a new calibration press the “
START
” button, the display shows the following indications:
NOTE:
Before executing the following procedure prepare the aircraft with a normal angle of attack and mantain it for all the
calibration duration.
•
Step #1 (EMPTY TANK): Drain the tank such that
only the fuel unusable remain in the tank.
Wait until the indication
(5)
is stable and click on “
NEXT
”.
38
(1) Tank currently
calibrating
(3) Action to be
executed
(2) Calibration step that
need to be executed
(5) E
lectrical output of
the fuel level sensor
(4) F
uel quantity already added to the
tank at this point of calibration
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