| 摘要 |
The invention relates to a test gas injection device and a method for determining the sensitivity of a tightness test, preferably a tightness test in which a test chamber is subjected to a protective gas that is free of the test gas. The test gas injection device comprises a feed pump (10) that is designed to compress a test gas, and a test gas feed device (13) for introducing the compressed test gas into a test chamber (100), said test gas feed device (13) comprising means (16) for restricting the test gas. |
