Measuring and testing – Fluid pressure gauge – Diaphragm
Reexamination Certificate
2006-10-24
2006-10-24
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid pressure gauge
Diaphragm
C073S724000
Reexamination Certificate
active
07124641
ABSTRACT:
A capacitive pressure transmitter is provided. In one aspect, the transmitter includes a capacitive pressure sensor coupled directly to the measured media without any intervening fluid isolation. A filter is preferably used to keep particulates from reaching the measuring diaphragm. In another aspect, a capacitive pressure transmitter is provided with at least one self-contained isolator interposed between a process connection and the capacitive pressure sensor. In both aspects, the capacitive pressure transmitter is relatively small and preferably constructed from materials that facilitate low-cost manufacture.
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Broden David A.
Horky David A.
Allen Andre
Lefkowitz Edward
Rosemount Inc.
Westman Champlin & Kelly P.A.
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