Line pressure compensated differential pressure transducer...

Details Line pressure compensated differential pressure transducer... Line pressure compensated differential pressure transducer...

2008-03-18

2008-03-18

Allen, Andre J. (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

C073S716000, C073S727000, C073S719000, C073S721000

Reexamination Certificate

active

11447430

ABSTRACT:
A pressure transducer apparatus including: first and second pluralities of piezoresistors each coupled in Wheatstone bridge configurations, wherein the bridges are coupled together to provide a first output being indicative of a differential pressure; and, a third plurality of piezoresistors coupled in a Wheatstone bridge configuration and being suitable for providing a second output being indicative of an absolute line pressure. A compensator may be employed for adjusting the first output for line pressure variation responsively to the second output.

REFERENCES:
patent: 5286671 (1994-02-01), Kurtz et al.
patent: 6454375 (2002-09-01), Wilson et al.
patent: 6467861 (2002-10-01), Thielman et al.
patent: 6612179 (2003-09-01), Kurtz
patent: 2002/0012016 (2002-01-01), Wilson et al.

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