Electronic transducer

Details Electronic transducer Electronic transducer

1989-08-04

1991-02-19

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73756, 338 4, G01L 904

Patent

active

049932675

ABSTRACT:
An electric transducer has a casing with a plurality of walls defining a pair of chambers, and one of the walls interposed between the chambers defines a diaphragm for deflection in response to fluid pressure in one of the chambers. A strain gauge disposed on the one wall in the other of the chambers spans the diaphragm for conjoint deflection therewith to establish an output voltage correlative with the diaphragm deflection, and an electronic amplifier in the other chamber is connected in circuit relation with the strain gauge for amplifying the output voltage.

REFERENCES:
patent: 3247719 (1966-04-01), Chalner
patent: 3389362 (1968-06-01), McLellan
patent: 3520191 (1970-07-01), Pien
patent: 3817107 (1974-06-01), Shimada et al.
patent: 3935636 (1976-02-01), Mermistein
patent: 4217783 (1980-08-01), Ito et al.
patent: 4295116 (1981-10-01), Studlien
patent: 4414851 (1983-11-01), Maglic
patent: 4776219 (1988-10-01), Friedrich
patent: 4796464 (1989-01-01), Miller
patent: 4797007 (1989-01-01), Elmore, III
patent: 4840067 (1989-06-01), Nishida et al.
Brochure TN-510 entitled "Design Considerations for Diaphragm Pressure Transducers" published by Measurements Group, Inc., Raleigh, N.C.
"Strain Gage Pressure Transducer Refresher", by Bernard H. Shapiro, in the Oct. 1984 Issue of The Industrial Process Control Magazine.

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