Apparatus for detecting an aqueous liquid in bottles and contain

Details Apparatus for detecting an aqueous liquid in bottles and contain Apparatus for detecting an aqueous liquid in bottles and contain

1980-06-23

1983-01-18

McGraw, Vincent P.

Optics: measuring and testing

Inspection of flaws or impurities

Containers or enclosures

209524, 209582, 250223B, 356407, G01N 2190, B07C 5342

Patent

active

043689809

ABSTRACT:
The invention relates to apparatus for detecting water-based residues in translucent bottles, in which energy in two parts of the spectrum in and near the infra-red region, in one of which parts (0.8 to 0.9 microns) water is relatively transparent and the other of which parts (1.2 to 1.6 microns) water is more strongly absorbent is transmitted through a bottle, and the intensities of the emergent energies in the two parts are separately measured by a silicon detector and a germanium detector, associated with respective collimator tubes and filters, and are compared to produce a signal indicative of the presence of water in the bottle.

REFERENCES:
patent: 3405268 (1968-10-01), Brunton
patent: 3497304 (1970-02-01), Berube
patent: 3821550 (1974-06-01), Priest
patent: 4121103 (1978-10-01), Calhoun
patent: 4262196 (1981-04-01), Smith
patent: 4300689 (1981-11-01), Franklin et al.

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