Automatic leak detector

Details Automatic leak detector Automatic leak detector

1991-06-28

1993-11-23

Hofsass, Jeffrey

Communications: electrical

Condition responsive indicating system

Specific condition

324455, 324464, 73 2321, 73 40, 340605, G08B 1710

Patent

active

052648338

ABSTRACT:
A method and apparatus are provided for automatically compensating for gain variations, component aging and drift characteristics of an associated circuit when trying to detect a leak. In the preferred embodiment an analog to digital converter will convert an analog signal from a sensor to a digital representation. A microprocessor will read the digital representation and compute the percentage change of the difference in values of the digital representations. Wherever the percentage change is greater than a threshold value, the microprocessor will activate an alarm to inform the user.

REFERENCES:
patent: 4488118 (1984-12-01), Jeffers et al.
patent: 4831332 (1989-05-01), Rudisill et al.
patent: 5028921 (1991-07-01), Potter

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