Title:
FILM CHAMBER AND METHOD FOR LEAK DETECTION ON A NON-RIGID SPECIMEN
Document Type and Number:
WIPO Patent Application WO/2014/053393
Kind Code:
A3
Abstract:
The invention relates to a method for determining the rate of leakage on a non-rigid specimen, wherein the specimen (18) is introduced to a film chamber (12) which can be evacuated, having at least one wall region made of a flexible material and the pressure in the film chamber is reduced outside of the specimen (18). The pressure gradient (32) within the film chamber (12) outside of the specimen (18) is measured. In order to increase the accuracy of the leak detection, an outer over-pressure is exerted on the flexible wall region during pressure measurement which exceeds the pressure in the film chamber (12) and outside of the specimen and the pressure inside the specimen (18).
Inventors:
DECKER SILVIO (DE)
Application Number:
PCT/EP2013/070101
Publication Date:
May 30, 2014
Filing Date:
September 26, 2013
Export Citation:
Assignee:
INFICON GMBH (DE)
International Classes:
G01M3/32
Foreign References:
| EP0741288B1 | 2002-08-28 |
Attorney, Agent or Firm:
VON KREISLER SELTING WERNER (Bahnhofsvorplatz 1, Köln, DE)
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