Measuring and testing – Fluid pressure gauge – Vibration type
Patent
1988-02-02
1989-11-07
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Vibration type
73720, 310324, 310338, G01L 708, G01L 900
Patent
active
048783854
ABSTRACT:
An apparatus for sensing differential pressures is provided. The apparatus includes a housing having an inner chamber filled with an incompressible working fluid. First and second diaphragms are provided in said housing for interacting with the fluids being measured. A flex-tube is provided in the housing and is coupled to one of the diaphragms for sensing the differential pressure. One end of the flex-tube is securely mounted to the housing and the other end is coupled to the diaphragm. A quartz sensor is positioned on the core for sensing strain applied to the flex-tube by the differential pressure exerted on the diaphragm.
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patent: 4479070 (1984-10-01), Frische et al.
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patent: 4594898 (1986-06-01), Kirman et al.
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Fisher Controls International Inc.
Woodiel Donald O.
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