Apparatus For Water Shield And Military Grade Pressure Activated Switch.

Abstract: The present invention provides a system comprising of hardware and mechanical housing elements to establish an optimized tool for monitoring the hydrostatic pressure & activate the switching action on fixed pressure (0.3 Bar): This system is used for activation of deployment action of flight data recorder at depth of 3 meter water pressure as per . ED-112. Requirements. The electronics hardware elements (1, 2, 3, 6-15) and mechanical hardware elements (4, 5) functions in an integrated manner. The designed Ml L Standard pressure activated switch is tested as per Ml L-STD-81 00 to meet qualification standard of Military aircraft. Standard pressure sensor (4 mA - 20 mA) works on Piezo-resistive silicon sensor principle. Pressure sensor with added electronics hardware shall act as snap·based switching pressure switch.

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