Liquid leakage sensor and liquid leakage detecting system

Details Liquid leakage sensor and liquid leakage detecting system Liquid leakage sensor and liquid leakage detecting system

2007-01-02

2007-01-02

Trieu, Van T. (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S618000, C340S632000

Reexamination Certificate

active

10977553

ABSTRACT:
Among plural liquid leakage sensors placed at the lower most portion of a system such as a floor surface, a leaked liquid storing portion, etc., an error-activated location of the sensor can be easily identified uniquely when the sensor is detecting any abnormality. In a liquid leakage detecting system including at least one liquid leakage sensor having at least one detecting portion contactable with a leaking liquid through an air layer or a liquid permeable layer, a warning device including a sound producing is placed within a specified spatial distance from each installation position of the liquid leakage sensor, wherein after detecting any abnormal conditions of the liquid leakage sensor, a warning signal is issued at least in an audio frequency based on the warning device in order to discriminate the error-activated leakage sensor from other non-activated leakage sensors placed outside of the specified spatial distance and uniquely identify the installation position of the activated leakage sensor.

REFERENCES:
patent: 5583441 (1996-12-01), Bitts
patent: 5687687 (1997-11-01), Trueblood et al.
patent: 5946967 (1999-09-01), Russell
patent: 6876305 (2005-04-01), Kadwell et al.
patent: 04-070572 (1992-03-01), None
patent: 09-113398 (1997-05-01), None
patent: 2002-350275 (2002-12-01), None

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