Patent ID: 8857463

Claim:
A pressure chamber sensor for a pressurized chamber of gas which contains gas at a gas pressure, said pressure chamber sensor comprising: a sensor cap threadably adapted for connection to said pressurized chamber, a housing defined within said sensor cap, said sensor cap further defining an input orifice, in communication with said housing, and at least one outlet in communication with said housing, wherein said input orifice is sized to allow a predetermined flow of said gas through said input orifice, and wherein said housing is configured to direct said predetermined flow of said gas through said housing and out said at least one outlet; an electronic sensor mounted within said housing, said electronic sensor being positioned within said housing to encounter said predetermined flow of said gas through said housing; a back pressure regulator disposed in said sensor cap, said back pressure regulator being operable to allow said predetermined flow of gas to flow through said housing when said gas pressure is above a predetermined minimum pressure, said back pressure regulator being operable to prevent air flow through housing when said gas pressure drops below a minimum pressure.