Electronic detection apparatus for leaks

Details Electronic detection apparatus for leaks Electronic detection apparatus for leaks

G - Physics

01

N

349/39

G01N 29/00 (2006.01) G01M 3/24 (2006.01)

Patent

CA 1125432

Abstract of the Invention This invention is an improved electronic detection system for leaks in articles such as can tops and the like com- prising a special ultrasonic microphone-amplification system for listening for leaks in articles, a signal averaging network to receive the signal produced by the amplifier and to improve the signal to noise ratio, an enable circuit which is syn- chronized with the pressurization of the article to be leak tested and which triggers the signal averaging network and a comparator to receive the averaged signal from the signal averager. The comparator produces a logic pulse for rejecting leaky articles when the averaged signal produced by the signal averaging network is above a predetermined level.

307095

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