Abstract: The invention relates to a film chamber (10) for testing the sealing tightness of a test specimen containing a test fluid, the film chamber comprising: at least one vacuum connection (20) which can be connected to a vacuum pump (32) and a gas detector (36); at least one flexible wall region (14) that defines a film chamber volume; and a frame (12) that surrounds the flexible wall region (14) on the outside in order to seal the film chamber volume. The film chamber is characterized in that: the vacuum connection (20) is located in a region arranged centrally with respect to the frame (12) and is radially outwardly surrounded by the frame (12); and at least one gas inlet (22, 30) for supplying a carrier gas is located in the region of the outer frame in such a way that the carrier gas flows through the gas inlet through the film chamber volume along the flexible wall region (14) radially from the outside inwardly to the vacuum connection (20).

Abstract: A vacuum leak detection system may comprise a test chamber unit having a test chamber gas inlet and a test chamber gas outlet, a gas detection unit having a gas detection gas inlet and a gas detection gas outlet, and a gas control unit connecting the test chamber gas inlet and the test chamber gas outlet to the gas detection gas inlet and the gas detection gas outlet, which is connected to the test chamber unit and to the gas detection unit, and which has separate gas line paths for optionally connecting the gas inlets and the gas outlets of the test chamber unit and the gas detection unit, wherein the gas control unit has a third gas inlet which is open towards the atmosphere and which can be connected to the test chamber gas inlet via a gas line path running through the gas control unit.

Abstract: In a test leakage device (10) for testing the functionality and for calibrating a gas leak detection device having an evacuable test chamber (34) for receiving a test object and the test leakage device (10), wherein the test leakage device (10) has a base (12), a cover (16) and at least one side wall (14) connecting the base (12) to the cover (16), which surround an interior space (20) which can be filled with a test gas or a test liquid, provision is made for the base (12) to have a membrane (24) which is permeable to the test gas or constituents of the test liquid, and for mutually opposite sections of that inner side (18) of the side wall (14) which faces the interior space (20) to be at a greater distance from one another in the region of the cover than in the region of the base.

Abstract: A method for a tightness test of a test object filled with a liquid, said test object having an internal pressure which is lower than atmospheric pressure, comprising the following steps: inserting the test object into a test chamber, evacuating the test chamber to a pressure which is lower than the internal pressure inside the test object, drawing off the test chamber residual gas components together with gas components desorbing from a wall of the test chamber and parts of the liquid escaping from the test object through a leak in the latter without any carrier gas being fed to the test chamber from outside, transporting the drawn-off residual gas components together with the parts of the liquid escaped from the test object to a detector, and detecting parts of the liquid escaped through a leak in the test object by means of a detector.