| 摘要 |
An object to be tested and a comparison object are placed in separate receptacles, the receptacles pressurized, isolated, and their pressure differential measured to detect small leaks in the test object. In order to determine larger leaks, a second pair of receptacles are provided which are later placed in communication with the first pair so that larger leaks may be detected. This application provides an additional pair of valves so that all receptacles are maintained at substantially the same pressure during the check for small leaks. The result of this arrangement is that the effect of small leaks in the valves between the two sets of receptacles is nulified.
|
