Optical valve position sensor system

Details Optical valve position sensor system Optical valve position sensor system

1980-06-18

1982-10-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, G01D 534

Patent

active

043563970

ABSTRACT:
A sensing mechanism for determining the open or closed condition of a valve member located at a remote location. First and second optical fiber sections are aligned with a rotatable light modulator between the sections. Rotational movement of the modulator is governed by movement of a portion of the valve such that the light transmitted through the modulator may be detected to provide an indication of valve condition.

REFERENCES:
patent: 3717171 (1973-02-01), Fawkes
patent: 3781092 (1973-12-01), Sussman et al.
patent: 3903496 (1975-09-01), Stimler
patent: 3999074 (1976-12-01), Callaghan
patent: 4162399 (1979-07-01), Hudson
patent: 4208579 (1980-06-01), Scrivo et al.

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