-a Fuel Quantity Indicating Computer (FQIC)

 -three cadensicons.
 The fuel quanitity probes are in the fuel tanks. The FQIC regularly
 monitors the fuel quantity probes and uses signal conditioning to
 calculate the volume of fuel in the related fuel tank.

 1EFF : ALL 1 28-40-00Page 1 1 1 Aug 01/05 1 1 1CES 1

 Component Location - Fuel Indicating
 Figure 001

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-40-00Page 2 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1

R  Component Location - Fuel Indicating 
R  Figure 001A 
R 1EFF :  301-399,  1  28-40-00 Page 3 
1  1  May 01/04
 1  1
 1CES  1

 One cadensicon is in each wing tank inner cell and one is in the center tank. They are each near to the tanks lowest point. The FQIC regularly monitors the cadensicons and uses their data to calculate the density of the fuel in the related fuel tank. When the FQIC has calculated the volume of fuel in the tanks and the fuel density, it can calculate the fuel mass. The fuel mass is displayed on:
 -
the System Display (SD) FUEL Page and the Engine/Warning Display (EWD) (Ref. 31-66-00) (which together make up the ECAM)

 -
the fuel quantity preselector and the multi-tank fuel quantity indicator (during a refuel (Ref. 28-25-00)).

 **ON A/C 301-399,
 The FQI system has:
 -fuel quantity probes

 -a Fuel Quantity Indicating Computer (FQIC)

 -two ultracomps

 -a dualcomp.
 The fuel quantity probes are in the fuel tanks. The FQIC regularly
 monitors the fuel quantity probes and uses signal conditioning to
 calculate the volume of fuel in the related fuel tank.
 The dualcomp is installed near to the lowest point of the LH wing tank.
 The ultracomps are installed near to the lowest point of the RH wing and
 center (transfer) tanks. The FQIC regularly monitors the dualcomp and the
 ultracomps and uses their data to calculate the density of the fuel in
 the fuel tanks.
 When the FQIC has calculated the volume of fuel in the tanks and the fuel
 density, it can calculate the fuel mass.
 The fuel mass is displayed on:

 -
the System Display (SD) FUEL Page and the Engine/Warning Display (EWD) (Ref. 31-66-00) (which together make up the ECAM)

 -
the fuel quantity preselector and the multi-tank fuel quantity indicator (during a refuel (Ref. 28-25-00)).

 **ON A/C ALL
 B. Magnetic Level Indicators (Ref. 28-43-00)
 The MLIs are a secondary direct-reading system used to calculate the fuel quantity in the LH wing, RH wing and center tanks (when the A/C is on the ground). It is not necessary to have electrical power to use the indicators. Tables (Ref. 12-11-28) are used to combine the MLI indications, the aircraft attitude figure and the fuel relative density, to give the amount of fuel in each tank.
 1EFF : ALL 1 28-40-00Page 4 1 1 Feb 01/05R 1 1 1CES 1

 C. Fuel Level Sensing System (FLSS) (Ref. 28-46-00)
 The FLSS has:
 -
fuel level sensors

 -
fuel temperature sensors

 -two Fuel Level Sensing Control Units (FLSCUs).

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 The fuel level sensors are in the fuel tanks. The FLSCUs continuously monitor the fuel level sensors and use signal conditioning to find if a sensor is 'wet' or 'dry'. The FLSCUs use the data from the fuel level sensors to control:
 -
the fuel recirculation system (Ref. 28-16-00)

 -
the main fuel pump system (Ref. 28-21-00)

 -
the refuel system (Ref. 28-25-00).

 **ON A/C 301-399,
 Fuel level sensors are in all the fuel tanks. The FLSCUs continuously monitor the fuel level sensors and use signal conditioning to find if a sensor is 'wet' or 'dry'. The FLSCUs use the data from the fuel level sensors to control:
 -
the fuel recirculation system (Ref. 28-16-00)

 -
the refuel system (Ref. 28-25-00)

 -
the main transfer system (Ref. 28-26-00).

 **ON A/C ALL
 The fuel temperature sensors are in the wing tanks. The FLSCUs continuously monitor the fuel temperature sensors and use signal conditioning to find if the fuel is more than or less than a specified value. The FLSCUs use the data from the fuel temperature sensors to control the fuel recirculation system (Ref. 28-16-00).
 4. Power Supply
____________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
　
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