Vacuum leak detector and method

Details Vacuum leak detector and method Vacuum leak detector and method

Filed on

1981-03-25

Date issued

1983-10-18

Examiner

Stephan, Steven L.

Patent Class

Measuring and testing

SubClass

With fluid pressure

SubSubClass

Leakage

Other Related Categories

G01M 320

Type

Patent

Status

active

Patent number

044098170

Description

ABSTRACT:
Apparatus and method for detecting leakage in a vacuum system involves a moisture trap chamber connected to the vacuum system and to a pressure gauge. Moisture in the trap chamber is captured by freezing or by a moisture adsorbent to reduce the residual water vapor pressure therein to a negligible amount. The pressure gauge is then read to determine whether the vacuum system is leaky. By directing a stream of carbon dioxide or helium at potentially leaky parts of the vacuum system, the apparatus can be used with supplemental means to locate leaks.

REFERENCES:
patent: 2863315 (1958-12-01), Penning
patent: 3416359 (1968-12-01), Durbin et al.
patent: 3592048 (1971-07-01), Maurice et al.
patent: 3798536 (1974-03-01), Maillard et al.
patent: 3855844 (1974-12-01), Craig
patent: 4172477 (1979-10-01), Reich
patent: 4232546 (1980-11-01), Dumont
patent: 4320653 (1982-03-01), Bernhardt

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