G - Physics – 01 – M
Patent
G - Physics
01
M
73/118, 116/66.1
G01M 3/32 (2006.01)
Patent
CA 1333530
The invention relates to a method of detecting a possible leak in a vacuum package, which comprises - placing the package in a gauging space, - shutting off the gauging space, - applying a pressure in the closed gauging space higher than that in the vacuum package, and - gauging the pressure in the gauging space as function of the time for a predetermined gauging period. At least two identical vacuum packages are each placed in a separate gauging space of identical size. A mutually identical initial pressure is applied in the closed gauging spaces and the pressure variation is simultaneously gauged in the closed gauging spaces, while the difference in pressure variation between the two gauging spaces is determined. The invention further relates to an apparatus for detecting a possible leak in a vacuum package according to the above method, said apparatus comprising at least two gauging spaces of identical size, each for receiving an identical vacuum package. These gauging spaces are connectable to a common space. The apparatus also comprises means for shutting off each gauging space from the common space, as well as means for simultaneously gauging the pressure as a function of the time in each gauging space, and means for determining the difference in pressure variation between the two or each pair of gauging spaces. The gauging spaces can be bounded by stationary walls or by a sheet-like, flexible and gastight body.
569551
Goudreau Gage Dubuc
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