Fiber optic liquid level sensor

Details Fiber optic liquid level sensor Fiber optic liquid level sensor

1988-02-17

1989-11-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250577, 73293, H01J 516, G01F 2300

Patent

active

048809713

ABSTRACT:
A liquid level sensor comprises a probe containing closely spaced therein an elongate light emitter and an elongate light collector, the housing of the probe permitting light to issue from the interior from the emitter and to return to the collector. A light transmitting medium fills the probe housing. Means are provided for feeding light to the emitter and from the collector. An indicator can be provided, adapted to provide a level indication obtained form the light fed from the collector.

REFERENCES:
patent: 3448616 (1969-06-01), Wostl et al.
patent: 4038650 (1977-07-01), Evans et al.
patent: 4039845 (1977-08-01), Oberhansli et al.
patent: 4159420 (1979-06-01), Tsunoda
patent: 4311048 (1982-01-01), Merz
patent: 4745293 (1988-05-01), Christensen

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