R **ON A/C 401-499,
 H. Water Extractor Temperature-Sensor (Ref. Fig. 011) The water extractor temperature-sensor 11HH (31HH) consists of two thermistors potted in a hermetically sealed steel housing. A 6-pin electrical connector is also included. One sensing element is connected to lane 1 and the other to lane 2 of the corresponding ACSC.

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 J. Compressor Pneumatic Overheat-Sensor (Ref. Fig. 012) The compressor pneumatic overheat-sensor 10HM9 (11HM9) consists of a bi-metalic rod which is inserted into the hot airflow. The sensor is connected through a sensing line, to the flow control valve 8HB (11HB) shuttle valve assembly. It vents flow control muscle pressure to ambient (Ref. 21-51-00). Differential expansion in the rod will start to open the vent at 230 DEG.C (446.00 DEG.F) (any further increase in temperature will increase the opening area). The angle of the flow control valve is now controlled pneumatically, to stop an overheat of 260 DEG.C (500.00 DEG.F). The pneumatic sensor is located in the compressor discharge duct close to the compressor overheat sensor 15HH (35HH).

 Water Extractor Temperature-Sensor 11HH, 31HH Figure 011
 1EFF : 1 1R 1CES  ALL  1 11 1 21-61-00 Page 92 Aug 01/05

 Compressor Pneumatic Overheat-Sensor 10HM9, 11HM9, Pack Outlet Pneumatic-Sensor
 10HM10, 11HM10

 Figure 012 
R 1EFF :  001-049, 051-099, 101-149, 151-199,  1 Page 9321-61-00
 1201-299, 301-399,  1 Aug 01/05
 1  1
 1CES  1

 K. Pack Outlet Pneumatic-Sensor (Ref. Fig. 012) The pack outlet pneumatic-sensor 10HM10 (11HM10) is located at the pack outlet. When the anti-ice valve 17HH (37HH) is operative the sensor adjusts the muscle pressure in the valve to maintain the pack outlet temperature at about 15 DEG.C (59.00 DEG.F).

R **ON A/C 401-499,
 K. Pack Discharge Pressure Sensor (PDPS) (Ref. Fig. 012A) The pack discharge pressure sensor 14HH (20HH) measures the pressure difference between turbine outlet and cabin (underfloor) pressure. The PDPS is mounted on each side of the air conditioning bay center beam and is connected to the correspondent ACSC. In case the ACSC detects a certain pressure difference, the ACSC will open the bypass valve for the de-icing of the turbine outlet, condenser and downstream ducting.
 **ON A/C 001-003, 051-054,
 L. Bleed Temperature Sensor (Ref. Fig. 010) The bleed temperature sensor 18HH (38HH) is located in the bleed air duct at the inlet of each flow control valve 8HB (11HB). It is connected to the pack controller 7HH (27HH) primary-computer. It supplies CFDS information when maintenance action is necessary due to overheat at the pack inlet. The sensor consists of one platinum resistor potted in a stainless-steel ventilated-tube housing. A 3-pin electrical connector is also included.

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 M. Pack Inlet Pressure-Sensor (Ref. Fig. 013) The pack inlet pressure sensor 16HH (36HH) converts pressure at the pack inlet into an electrical signal, it consists of:
 -
a high-precision pressure transducer,

 -
a measurement amplifier,

 -an electrical connector.
R 1EFF : ALL 1 21-61-00Page 94 1 1 Aug 01/05 1 1 1CES 1

 Pack Discharge Pressure Sensor (PDPS) 14HH (20HH)
 Figure 012A

R 1EFF : 401-499, 1 21-61-00Page 95 1 1 Aug 01/05 1 1 1CES 1

 Pack Inlet Pressure-Sensor 16HH, 36HH
 Figure 013

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 21-61-00Page 96 1201-299, 301-399, 1Aug 01/05 1 1 1CES 1 The pressure sensor is installed upstream of the flow control valves 8HB (11HB). If the pressure drops below limits, the bypass valve 10HH (30HH) preferential position is controlled to a more open position to allow for supply of a minimum required airflow. This decreases the differential pressure of the air conditioning pack 10HM (11HM). The ram-air doors are controlled to a more open position, this compensates for the decreased efficiency of the turbine/compressor cycle.

 N. Pack Discharge Temperature-Sensor
 **ON A/C 001-003, 051-054,
 (Ref. Fig. 010)

R **ON A/C 004-049, 055-099, 101-149, 151-199, 201-299, 301-399,
 (Ref. Fig. 010A)

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 The pack discharge temperature-sensor 13HH (34HH) is located at the pack outlet (close the pack outlet pneumatic sensor). The sensor is connected to the pack 7HH (27HH) secondary computer and monitors the pack outlet temperature which is shown on the ECAM lower display unit.

R **ON A/C 401-499,
 N. Pack Discharge Temperature-Sensor (Ref. Fig. 010B) The pack discharge temperature-sensor 13HH (34HH) is located at the pack outlet. The sensor is connected to the ACSC 47HH (57HH) and monitors the pack outlet temperature which is shown on the ECAM lower display unit.
　
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