Optical fluid detector

Details Optical fluid detector Optical fluid detector

1987-08-31

1989-03-28

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356436, G01H 1506

Patent

active

048166952

ABSTRACT:
An optical fluid detector (10) has an opaque housing (12). There is a first passage (14) through the housing (12) to receive a transparent, flexible plastic tube (50). A second passage (20) through the housing (12) orthogonally intersects the first passage (14). A first receptacle (22) in the housing has a light emitting diode (D1) with a housing having a flat surface (30) engaging the receptacle (22) and facing the second passage (20). A second receptacle (24) at a second end of the second passage on an opposing side of the first passage (14) from the first receptacle has a photodetector (Q1) with a housing having a flat surface (32) facing the second passage (20). An output circuit (33) is connected to the photodetector.

REFERENCES:
patent: 3812482 (1974-05-01), Clark
patent: 3861802 (1975-01-01), Belmear, Jr.
patent: 4038982 (1977-08-01), Burke et al.
patent: 4654535 (1987-03-01), Wolske

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