Patent ID: 7673518

Claim:
A pressure transducer, comprising: a housing having an internal hollow and having a first pressure port for receiving a first pressure (P 1 ) and a second pressure port for receiving a second pressure (P 2 ), said housing having a pressure sensor header accommodating area within said hollow, a pressure sensor header having an outer shell with a semiconductor sensor chip accommodated in said shell, said chip containing first and second pressure sensing modules fabricated from a common wafer process, each module containing contacts connected to said sensor module, said chip mounted on a glass header within said shell, said header having terminal pins connected to said module contacts, said glass header further including a guide pin extending from said header and positioned within said shell to properly align said chip when placed in said shell assuring that said module contacts and said terminal pins properly align to make electrical contact, said shell positioned within the hollow of said housing according to the location of said guide pin to enable said first and second pressure sensing modules to receive said first pressure, and means coupled to said second pressure port to direct said second pressure to only one of said modules to cause said module to provide an output proportional to the difference between said first and second pressure, with said other module providing an output proportional to said first pressure.