Fiber optic chemical sensor having specific channel connecting d

Details Fiber optic chemical sensor having specific channel connecting d Fiber optic chemical sensor having specific channel connecting d

1993-07-26

1994-09-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022724, 385 12, N01J 516

Patent

active

053491815

ABSTRACT:
In a sensor assembly, an optical fiber with a sensing region is connected at one end through a fiber guide tube to a detector housing containing a sensing detector. At the other end the fiber is connected through a fiber guide tube to a light source which has a reference detector mounted laterally thereto. The sensing and reference detectors are a matched pair of the same type. The guide tube in the source has a bevelled end which reflects a portion of light from the source to the reference detector.

REFERENCES:
patent: 4275296 (1991-06-01), Adolfsson
patent: 4644154 (1987-02-01), Brogardh et al.
patent: 4929049 (1990-03-01), Goullon et al.
patent: 5026139 (1991-06-01), Klainer et al.
patent: 5094958 (1992-03-01), Klainer et al.
patent: 5149963 (1992-09-01), Hassler, Jr.

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