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4.3. Pressure management
Table 3 gives the status of the main pressure sensors manufacturers for aeronautics applications, including Air Class A for primary Air Data, Air Class B as secondary Air Data system. The table presents also the status of pressure sensors for Engine control with 3 classes for high temperature and high pressure as well as accuracy.
Auxiliary Power Unit Control is currently using pressure sensors with performances close to the same specifications as FADEC and engine control products. They are required to operate at higher temperatures in the future. Hydraulic Control Monitoring, Hydraulic Servo-Valve use pressure transducers, which are currently based on both electromechanical and MST/MEMS pressure sensors. Controlling the cabin also requires pressure sensors, as well as sensors for humidity, air flow and other parameters controlling air quality.
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