초록 ▼

The method and apparatus are essentially characterized by the fact that the part (2, 201) is filled during a first phase with a gas under pressure from a source (10, 204), e.g. air, said air being cooled inside the part under test by means of an expansion nozzle (22, 79), and by a second phase in wh

The method and apparatus are essentially characterized by the fact that the part (2, 201) is filled during a first phase with a gas under pressure from a source (10, 204), e.g. air, said air being cooled inside the part under test by means of an expansion nozzle (22, 79), and by a second phase in which variations in the pressure of the gas inside the part are observed by means of a pressure sensor (80, 214), and a processor unit (221) subsequently performs calculations based on the stabilization time for the pressure inside the part, the length of the measurement periods, the volume of the part, and the observed pressure variations.

대표청구항 ▼

In an apparatus for leak testing at least a portion of the wall of a part, and/or for leak testing a volume, the apparatus comprising: means cooperating with said wall or volume to be tested to constitute an enclosure and including means for conveying a reference gas into said enclosure; means for c

In an apparatus for leak testing at least a portion of the wall of a part, and/or for leak testing a volume, the apparatus comprising: means cooperating with said wall or volume to be tested to constitute an enclosure and including means for conveying a reference gas into said enclosure; means for cooling said gas inside said enclosure; and means for measuring the pressure of said gas inside said enclosure; the improvement whereby said means for cooling said gas inside said enclosure comprises at least one nozzle and said nozzle is connected in series with said means for conveying the reference gas to the enclosure.