Sensor device

Details Sensor device Sensor device

1989-02-13

1989-12-05

Raevis, Robert R.

Measuring and testing

Fluid pressure gauge

Vibration type

G01L 1100

Patent

active

048844500

ABSTRACT:
A pressure sensor includes a resonator element (14) mounted on an optical fibre ferrule (11) whereby light signals for maintaining the resonator in a state of oscillation and for returning a modulated signal to a remote station are coupled to the resonator. The resonator is located in an evacuated cavity and is mounted on a flexible diaphragm whereby pressure changes may be detected as changes in the resonant frequency.

REFERENCES:
patent: 2669877 (1954-02-01), Dunlap et al.
patent: 3062052 (1962-11-01), Kolb
patent: 3697917 (1972-10-01), Orth et al.
patent: 4187635 (1980-02-01), Deissler
patent: 4379226 (1983-04-01), Sichling et al.
patent: 4410871 (1983-10-01), Mallon et al.
patent: 4446543 (1984-05-01), McLandrich et al.
patent: 4567451 (1986-06-01), Greenwood
patent: 4588886 (1986-05-01), Snider
patent: 4670649 (1987-06-01), Senior et al.

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