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R  21QJ  SENSOR-LOW LVL, L CTR TK CHANNEL A  141  147AZ  28-46-15 
R  22QJ  SENSOR-LOW LVL, R CTR TK CHANNEL B  142  148AZ  28-46-15 
R  23QJ1  SENSOR-FULL LVL, L WNG TK INR 1  540  540AB  28-46-15 
R  CHANNEL B 
R  23QJ2  SENSOR-FULL LVL, R WNG TK INR 1  640  640AB  28-46-15 
R  CHANNEL B 
R  24QJ1  SENSOR-UNDERFULL, L WNG TK INR 1  540  540AB  28-46-15 
R  CHANNEL B 
R  24QJ2  SENSOR-UNDERFULL, R WNG TK INR 1  640  640AB  28-46-15 
R  CHANNEL B 
R  25QJ1  SENSOR-UNDERFULL, L WNG TK INR 2  540  540CB  28-46-15 
R  CHANNEL B 
R  25QJ2  SENSOR-UNDERFULL, R WNG TK INR 2  640  640CB  28-46-15 
R  CHANNEL B 
R  26QJ1  SENSOR-UNDERFULL, L WNG TK INR 3  540  540GB  28-46-15 
R  CHANNEL B 
R  26QJ2  SENSOR-UNDERFULL, R WNG TK INR 3  640  640GB  28-46-15 
R  CHANNEL B 
R  27QJ1  SENSOR-FULL LVL, L WNG TK INR 2  540  540JB  28-46-15 
R  CHANNEL B 
R  27QJ2  SENSOR-FULL LVL, R WNG TK INR 2  640  640JB  28-46-15 
R  CHANNEL B 
R  28QJ1  SENSOR-HIGH LVL, LEFT WING SURGE TK  540  550CB  28-46-16 
R  CHANNEL A 

R 1EFF : 301-399, 1 28-46-00Page 7 1 1 May 01/04 1 1 1CES 1

 -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF. -------------------------------------------------------------------------------
R  28QJ2  SENSOR-HIGH LVL, RIGHT WING SURGE TK  640  650CB  28-46-16 
R  CHANNEL A 
R  29QJ1  SENSOR-TEMP, LEFT WING TK INNER  540  540AB  28-46-17 
R  CHANNEL A 
R  29QJ2  SENSOR-TEMP, RIGHT WING TK INNER  640  640AB  28-46-17 
R  CHANNEL A 
R  38QJ1  SENSOR-LOW LEVEL, LEFT WING TK INNER  540  540AB  28-46-19 
R  CHANNEL A 
R  38QJ2  SENSOR-LOW LEVEL, RIGHT WING TK  640  640AB  28-46-19 
R  INNER CHANNEL A 
R  39QJ1  SENSOR-LOW LVL (750KG), L WING TANK  540  540AB  28-46-15 
R  CHANNEL A 
R  39QJ2  SENSOR-LOW LVL (750KG), R WING TANK  640  640AB  28-46-15 
R  CHANNEL A 
R  40QJ1  SENSOR-LOW LVL (1500KG), L WING TANK  540  540AB  28-46-15 
R  CHANNEL A 
R  40QJ2  SENSOR-LOW LVL (1500KG), R WING TANK  640  640AB  28-46-15 
R  CHANNEL A 

R 1EFF : 301-399, 1 28-46-00Page 8 1 1 May 01/04 1 1 1CES 1 **ON A/C ALL

 3. System Description
__________________

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 001)
 **ON A/C 301-399,
 (Ref. Fig. 001A)
 **ON A/C ALL
 A. Fuel-Level Sensors
 The tank level sensing system has sensors which are installed in the tanks as follows:
 (1) High Level Sensors: - one in each wing tank 17QJ1 (17QJ2) - one in the center tank 20QJ The high level sensors are installed near the top of each fuel tank. The FLSCUs use signal conditioning to independently monitor the high level sensors. When the high level sensor in a fuel tank becomes wet, the FLSCUs will give a discrete output to:
 -close the related refuel valve
 -cause the related HI LVL light to come on at the refuel panel (Ref. 28-25-00).

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (2) Low Level Sensors:
 -three in each wing tank for 750kg (1700lb) fuel levels, 15QJ1 (15QJ2), 16QJ1 (16QJ2) and 39QJ1 (39QJ2)
 -two in the center tank for 130kg (290lb) fuel levels 21QJ and 22QJ. The low level sensors in the LH wing tank are installed as follows:
 -750kg (1653lb) low level sensors. When the two sensors 16QJ1 and 39QJ1 or the sensor 15QJ1 are continuously dry for 30 seconds the FLSCUs send a fuel low level warning to the ECAM.
 The low level sensors in the RH wing tank are installed as follows:
 1EFF : ALL 1 28-46-00Page 9 1 1 Aug 01/05 1 1 1CES 1

 -750kg (1653lb) low level sensors. When the two sensors 15QJ2 and 39QJ2 or the sensor 16QJ2 are continuously dry for 30 seconds the FLSCUs send a fuel low level warning to the ECAM.
　
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