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R NOTE : The probes identified with an asterisk (*) are not used on two tank
____ R aircraft.
R R OPTIONAL TESTING R R Independent measurements can be made before a decision is made to enter (or R close up) a fuel tank if the following Test Equipment is available: R - Simmonds DC Capacitance Tester PSD 30-2 R (A test set for measuring DC capacitance. The test set to have been R calibrated for the A320 type aircraft) R - Simmonds FQS Interface Unit PSD A320-4 R (A cable set that connects the Tester to the Wing or Center Tank wall R connectors to enable the tank units only to be checked) R - Simmonds FQS Interface Unit PSD A320-5 R (An adaptor and cables that permits the PSD A320-4 cables to be extended R to connect with the FQIC rack connector after the removal of the FQIC. R This enables the tank units and the aircraft wiring to be checked).
R NOTE : A tolerance of + or - 0.03pF plus the tolerance of the DC Capacitance
____ R Tester is recommened. This is over and above the values shown in the R table below. This gives an allowance for non-laboratory conditions, R different operators, and the accuracy of the Test Set used.
R NOTE : When measuring the probes 24QT1(2) and 39QT (the probes with a CIC),
____ R the CIC Signal Line or the Probe Signal Line, whichever is NOT being R measured, must be linked to the Return Line of the respective group.
R Table 304 - Tank Units DC Capacitance Values
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page 351
 201-299, 401-499, Aug 01/05 CES

R -------------------------------------------------------------------------R | | | MEAN | TOLERANCE | FULL TANK | R | FIN | PROBE | THEORETICAL | AT DRY pF | pF | R | | FUNCTIONAL DESIGNATION | pF DRY | + OR -| | R |----------|------------------------|-------------|-----------|-----------|
R  | 21QT1(2) | PROBE-FUEL QTY, L/R  |  70.29  |  0.70  |  146.84  | 
R  | | INNER CELL No. 1  |  |  |  | 
R  | |  |  |  |  | 
R  | 22QT1(2) | PROBE-FUEL QTY, L/R  |  68,86  |  0.70  |  143.85  | 
R  | | INNER CELL No. 2  |  |  |  | 
R  | |  |  |  |  | 
R  | 23QT1(2) | PROBE-FUEL QTY, L/R  |  57.93  |  0.58  |  121.00  | 
R  | | INNER CELL No. 3  |  |  |  | 
R  | |  |  |  |  | 
R  | 24QT1(2) | PROBE-FUEL QTY, and  |  31.36  |  0.32  |  65.39  | 
R  | | PROBE-COMPENSATOR L/R  |  13.68  |  0.15  |  28.33  | 
R  | | INNER CELL No. 4  |  |  |  | 
R  | |  |  |  |  | 
R  | 25QT1(2) | PROBE-FUEL QTY, L/R  |  61.25  |  0.60  |  127.97  | 
R  | | INNER CELL No. 5  |  |  |  | 
R  | |  |  |  |  | 
R  | 26QT1(2) | PROBE-FUEL QTY, L/R  |  56.08  |  0.56  |  117.11  | 
R  | | INNER CELL No. 6  |  |  |  | 
R  | |  |  |  |  | 
R  | 27QT1(2) | PROBE-FUEL QTY, L/R  |  44.23  |  0.44  |  92.33  | 
R  | | INNER CELL No. 7  |  |  |  | 
R  | |  |  |  |  | 
R  | 28QT1(2) | PROBE-FUEL QTY, L/R  |  39.81  |  0.40  |  83.05  | 
R  | | INNER CELL No. 8  |  |  |  | 
R  | |  |  |  |  | 
R  | 29QT1(2) | PROBE-FUEL QTY, L/R  |  35.21  |  0.35  |  73.40  | 
R  | | INNER CELL No. 9  |  |  |  | 
R  | |  |  |  |  | 
R  | 30QT1(2) | PROBE-FUEL QTY, L/R  |  35.21  |  0.35  |  73.40  | 
R  | | INNER CELL No. 10  |  |  |  | 
R  | |  |  |  |  | 
R  | 31QT1(2) | PROBE-FUEL QTY, L/R  |  27.60  |  0.27  |  57.40  | 
R  | | INNER CELL No. 11  |  |  |  | 
R  | |  |  |  |  | 
R  | 32QT1(2) | PROBE-FUEL QTY, L/R  |  33.90  |  0.34  |  70.63  | 
　
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