Gas bubble detector

Details Gas bubble detector Gas bubble detector

1993-08-25

1995-10-03

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

356440, G01N 2101

Patent

active

054554233

ABSTRACT:
A gas bubble detector having a modulated IR source focused through a bandpass filter onto a venturi, formed in a sample tube, to illuminate the venturi with modulated filtered IR to detect the presence of gas bubbles as small as 0.01 cm or about 0.004" in diameter in liquid flowing through the venturi. Means are provided to determine the size of any detected bubble and to provide an alarm in the absence of liquid in the sample tube.

REFERENCES:
patent: 3705771 (1972-12-01), Friedman et al.
patent: 3898637 (1975-08-01), Wolstenholme
patent: 4344429 (1982-08-01), Gupton et al.
patent: 4371786 (1983-02-01), Kramer
patent: 5078683 (1992-01-01), Sancoff et al.

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