Multipurpose centralized flow detector

Details Multipurpose centralized flow detector Multipurpose centralized flow detector

2007-02-06

2008-05-27

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

Using differential pressure

C340S870010

Reexamination Certificate

active

07377184

ABSTRACT:
A non-intrusive flow detector consists of an optical sensor assembly that attaches non-obstructively and non-invasively to a fluid flow meter. The sensor monitors dial movement of a least flow dial or wheel and generates an electrical signal representative of a flow through the meter. Electrical circuitry having an adjustable timing circuit is used to selectively detect either excessive flow during a predetermined time period or the absence of flow after a predetermined time period. The electrical circuitry is adapted to connect to an existing alarm system and may be housed either near the meter in a separate enclosure or placed in an existing alarm panel.

REFERENCES:
patent: 3875406 (1975-04-01), Holeman
patent: 5214587 (1993-05-01), Green
patent: 5228329 (1993-07-01), Dennison
patent: 5252967 (1993-10-01), Brennan et al.
patent: 6317051 (2001-11-01), Cohen
patent: 7042368 (2006-05-01), Patterson et al.
patent: 7152783 (2006-12-01), Charrin
patent: 2004/0263352 (2004-12-01), Cornwall et al.
patent: 2005/0007260 (2005-01-01), Winter et al.

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