•
Step #2: Add to the tank the indicated fuel quantity (it's the same quantity choosed with the “Calibration fuel step”
parameter), on this example it's required to add 5 liters of fuel:
NOTE:
It's important that the fuel quantity is exactly measured, to reach the maximum accuracy in the calibration.
Verify that the indication
(5)
of the second cell is stable and click on “
NEXT
”.
•
Next steps: repeat previous step (#2) until tank is completely filled.
•
When the tank is filled: click on “
NEXT
” to confirm the last calibration step and then click on “
END
” to end the calibration.
(When asked on display “END CALIBRATION ARE YOU SURE?” choose “YES”).
If you wish to know the tank capacity read the indication
(4)
of the last step on the calibration summary table.
The calibration for the selected tanks is now completed. It's recommended to write down on paper the data.
NOTE:
A common problem for many fuel level sensors is that they can't completely measure the tank capacity, so one or both of
this conditions can occur (see also “Fuel level sensors” on chap.#4):
- As you add fuel to an empty tank it takes a certain amount of fuel before the fuel sensor start to move from the bottom.
- As you drain fuel to a filled tank it takes a certain amount of fuel before the fuel sensor start to move from the top.
If one of this conditions occur during calibration the ECLIPSE notice that the fuel sensor doesn't produce an electrical change and
ask the user if fuel was already added for that calibration step:
If you are sure to have already added the fuel click on “YES” otherwise click on “NO” to go back to previous calibration step.
7.3.1 Fuel level sensors checkings
To operate correctly the fuel level indicators you need to know what type of fuel level sensors are installed in your aicraft. The
resistive sensors can be of two types:
•
Sensors that increase resistance as the fuel level increase
•
Sensors that decrease resistance as the fuel level increase
If you don't know what type of resistive sensors are installed in your aircraft follow this procedure:
- Empty the tank that you want to check.
- On the ECLIPSE enter in the calibration for that tank (System setup-->Fuel level-->Tanks setup-->Left/Right/Main tank
calibration).
- From the screen that appear click on “START” button and annotate the numerical value (5) Electrical
output of the fuel level sensor (refers to picture in previous chapter).
- Add a certain amount of fuel to the tank and check if the numerical indication increase or decrease: if increase then
the sensors installed increase the resistance as you add fuel (RES+), if decrease the sensors decrease the resistance
as you add fuel (RES-).
To exit from the calibration screen turn off the ECLIPSE or click on “ABORT”.
Repeat the procedure for any other unknown sensors installed.
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