Measuring and testing – Fluid pressure gauge – Diaphragm
Reexamination Certificate
2008-06-12
2011-10-25
Caputo, Lisa (Department: 2855)
Measuring and testing
Fluid pressure gauge
Diaphragm
C073S715000, C361S283400
Reexamination Certificate
active
08042401
ABSTRACT:
A process fluid pressure transmitter includes a pressure sensor, transmitter electronics, and an isolation system. The pressure sensor has an electrical characteristic that changes with pressure. The transmitter electronics are coupled to the pressure sensor to sense the electrical characteristic and calculate a pressure output. The isolation system includes a base member, and isolation diaphragm, and a fill-fluid. The isolation diaphragm is mounted to the base member and interposed between the pressure sensor and a process fluid. The fill-fluid is disposed between the isolation diaphragm and the pressure sensor. The base member and the isolation diaphragm are constructed from different materials such that the coefficient of thermal expansion of the isolation diaphragm is larger than the coefficient of thermal expansion of the base member.
REFERENCES:
patent: 3388597 (1968-06-01), Bargen et al.
patent: 4169389 (1979-10-01), Yasuhara et al.
patent: 4262540 (1981-04-01), Tamai et al.
patent: 4833922 (1989-05-01), Frick et al.
patent: 5157972 (1992-10-01), Broden et al.
patent: 5287746 (1994-02-01), Broden
patent: 5438876 (1995-08-01), Lewis
patent: 5522267 (1996-06-01), Lewis
patent: 5731522 (1998-03-01), Sittler
patent: 6038961 (2000-03-01), Filippi et al.
patent: 6561038 (2003-05-01), Gravel et al.
patent: 6675655 (2004-01-01), Broden et al.
patent: 6725731 (2004-04-01), Wiklund et al.
patent: 6782754 (2004-08-01), Broden et al.
patent: 6843133 (2005-01-01), Broden et al.
patent: 6843139 (2005-01-01), Schumacher et al.
patent: 6883380 (2005-04-01), Romo
patent: 7036381 (2006-05-01), Broden et al.
patent: 7080558 (2006-07-01), Broden et al.
patent: 7117745 (2006-10-01), Broden
patent: 7258021 (2007-08-01), Broden
patent: 7373831 (2008-05-01), Broden
patent: 7377176 (2008-05-01), Broden
patent: 7401522 (2008-07-01), Broden et al.
patent: 7437939 (2008-10-01), Chakraborty et al.
patent: 7454975 (2008-11-01), Louwagie et al.
patent: 7591184 (2009-09-01), Broden
patent: 7694572 (2010-04-01), Kopp
patent: 2008/0223140 (2008-09-01), Broden
patent: 2008/0245152 (2008-10-01), Louwagie et al.
patent: 2008/0253058 (2008-10-01), Chakraborty et al.
patent: 1 333 264 (2003-08-01), None
patent: 2 071 853 (1981-09-01), None
patent: 2005265784 (2005-09-01), None
International Search Report and Written Opinion for international application No. PCT/US2009/046060, dated Sep. 3, 2009.
Official Communication pursuant to Rules 161 and 162 EPC from European patent application No. 09763295.4 dated Feb. 2, 2011.
Caputo Lisa
Christenson Christopher R.
Jenkins Jermaine
Rosemount Inc.
Westman Champlin & Kelly P.A.
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