Differential pressure sensor mechanisms

Details Differential pressure sensor mechanisms Differential pressure sensor mechanisms

1989-04-28

1992-03-03

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Piston

G01L 716, G01L 910

Patent

active

050921789

ABSTRACT:
Differential pressure sensor mechanisms include core members acted upon by pressure sensing plungers at opposite ends of the core members to cause axial movement of the core members relative to a linear variable position sensor when unequal force balances are applied to the respective plungers, and centering springs for centering the core members with respect to the sensor when equal force balances are applied to the respective plungers. The centering springs desirably flex equally in both directions to keep reversing stress levels to a minimum and are essentially unloaded in the null or lower load region of operation to minimize the possibility of induced plunger side loading in the most active and critical region of performance. Carriage members desirably support opposite ends of the core members for coaxial movement relative to the sensor.

REFERENCES:
patent: 3383922 (1968-05-01), Seamans, Jr.
patent: 3442134 (1969-05-01), Bennett et al.
patent: 3453573 (1969-07-01), Kyle
patent: 3492872 (1970-02-01), Caspar et al.
patent: 3534612 (1970-10-01), Buckland
patent: 3744316 (1973-07-01), Kuzyk
Pressure Transducer has Long Service Life 1981.

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