Patent ID: 6543291
Filing Date: 2003-04-08
Classification: G01L

Abstract:
A differential pressure transducer comprising: a housing having a first end containing a first recess, and oppositely disposed second end containing a second recess and at least one sidewall interposed between said first and second ends;first and second isolation diaphragms respectively enclosing said first and second recesses and forming in conjunction therewith first and second cavities; a first tube communicable through a hole with said first cavity and protruding from said sidewall, and a second tube communicable with said second cavity through a hole and protruding from said sidewall, said first and second tubes being adapted to accommodate a fluid for substantially filling said first and second cavities; and a doubly â€œstoppedâ€  silicon sensor secured within said housing between said first and second cavities and being responsive to a first pressure applied to said first diaphragm and a second pressure applied to said second diaphragm to produce at least one signal indicative of a difference between said first and second pressures and being capable of withstanding an excess pressure in either direction.