High pressure transducer

Details High pressure transducer High pressure transducer

1987-05-28

1989-04-11

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73706, 338 4, G01L 708, G01L 904

Patent

active

048194875

ABSTRACT:
A pressure transducer for in particular the measurement of relatively high pressures in the range of 10,000-50,000 psi and including an elongated frame having a capillary tube extending therethrough and employing a coupler at one end of the frame for sensing input pressure. A sensing member is provided disposed about the capillary tube at the other end of the frame and has, defined with the capillary tube, a sensing chamber in communication with the capillary tube. A recess is provided in the sensing member defining a relatively thin wall adjacent the annular sensing chamber. This wall has a pressure responsive sensing surface that extends substantially parallel to the capillary tube length and upon which strain gages are secured. A method as described for securing the capillary tube with the sensing member in a liquid tight manner.

REFERENCES:
patent: 3349623 (1967-10-01), Pastan
patent: 3678753 (1972-07-01), Eggleston et al.
patent: 4369659 (1983-01-01), Wareham
patent: 4679438 (1987-07-01), Wareham
patent: 4680972 (1987-07-01), Wareham
patent: 4702113 (1987-10-01), Wareham
patent: 4712430 (1987-12-01), Wareham

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