This Topic is relevant to the whole fleet

Fuel quantity indication is a function of each FCMC which computes the quantities according to measurement of:

	fuel probes capacitance
	fuel dielectric constant
	fuel density
	horizontal stabilizer angle (for gauging the trim tank).
	aircraft attitude

Results are displayed in digital form on ECAM and on refuel control panel.

Two channels perform fuel computations. Channel 2 activates automatically if channel 1 fails.

Magnetic level indicators fitted on the lower wing surfaces permit a manual measurement of the fuel quantity in each tank (see Vol 2.01.30 procedure).

Various independent level sensors are installed to control the transfer logic.

FCMC discrete inputs :

	low level detection for each inner tank and trim tank
	high level status in each tank (high / not high)
	vent surge tanks level detection (wet / not wet).