Pressure sensor assembly suitable for use in harsh environments

Measuring and testing – Fluid pressure gauge – Photoelectric

Reexamination Certificate

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Reexamination Certificate

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07017417

ABSTRACT:
A sensor for sensing the pressure of a first fluid is provided. In one embodiment, sensor for sensing the pressure of a first fluid includes a fiber optic based sensing element disposed in a housing. A buffer fluid is disposed in the housing and is in fluid communication with the sensing element. A pressure transmitter is coupled to the housing for maintaining a predefined relationship between pressures of the first fluid and buffer fluid. A connector assembly is coupled to the housing and is coupled by an optical fiber is the sensing element. The sensor having a connector assembly is suitable for use in harsh conditions, such as within oil and gas well applications.

REFERENCES:
patent: 6422084 (2002-07-01), Fernald et al.
patent: 6439055 (2002-08-01), Maron et al.
patent: 6612174 (2003-09-01), Sittler et al.
patent: 6668656 (2003-12-01), Fernald et al.
patent: 6820489 (2004-11-01), Fernald et al.
patent: 2002/0154860 (2002-10-01), Fernald et al.
patent: 2002/0194917 (2002-12-01), Fernald et al.
patent: 2004/0129083 (2004-07-01), Fernald et al.

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