G - Physics – 01 – M
Patent
G - Physics
01
M
73/129
G01M 3/32 (2006.01)
Patent
CA 1286125
ABSTRACT A process and an apparatus system for monitoring the tightness of sealed packages is provided. The process and apparatus system utilize and incorporate a first system section, which includes at least one reservoir and a pressure measuring cell, a second system section, which includes a rigid measuring chamber, and means for adjusting pressure of the system sections via the first system section. The first system section is first pressurized to a predetermined pressure, which may be either above or below atmospheric pressure, and then the first and second system sections are brought into communication for establishing a second pressure for the first and second system sections combined. Major leaks in the sealed packages, absence of a sample in the measuring chamber and leaks in the measuring chamber may then be detected with the aid of the pressure measuring cell. In order to detect small leaks in the package, the first and second system sections are isolated and a differential pressure cell detects pressures of the first and second system sections for a time sufficient to detect differences in pressure between the respective first and second sections. If the package being tested has leaks, a pressure differential is detected between the respective first and second sections.
530924
Rosse Meinrad
Rossier Marc-Henri
Borden Ladner Gervais Llp
Societe Des Produits Nestle S.a.
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