For leak testing closed containers (9) which are filled with a filling product containing at least one liquid component the container is introduced in a test cavity (1) which is evacuated at least down to vapor pressure of that liquid component. The pressure in the surrounding of the container (9) and thus within test cavity (1) is monitored. Monitoring is performed by a vacuum pressure sensor (7), whereas lowering pressure surrounding the container (9) is performed by a vacuum pump (5). Leakage...

For leak testing closed containers (9) which are filled with a filling product containing at least one liquid component the container is introduced in a test cavity (1) which is evacuated at least down to vapor pressure of that liquid component. The pressure in the surrounding of the container (9) and thus within test cavity (1) is monitored. Monitoring is performed by a vacuum pressure sensor (7), whereas lowering pressure surrounding the container (9) is performed by a vacuum pump (5). Leakage...

A leak detection system determines whether a container has a leak or an aperture by attempting to draw a vacuum in the container and determining whether a vacuum has been created in the container. If a vacuum can be created in a container, this indicates that the container has a leak. Conversely if a vacuum cannot be created in the container, this indicates that the container does not have a leak. The leak detection system preferably includes a conveyor system for moving a container and a sensor...

For leak testing closed containers (9) which are filled with a filling product containing at least one liquid component the container is introduced in a test cavity (1) which is evacuated at least down to vapour pressure of that liquid component. The pressure in the surrounding of the container (9) and thus within test cavity (1) is monitored. Monitoring is performed by a vacuum pressure sensor (7), whereas lowering pressure surrounding the container (9) is performed by a vacuum pump (5). Leakag...

For leak testing closed containers (9) which are filled with a filling product containing at least one liquid component the container is introduced in a test cavity (1) which is evacuated at least down to vapour pressure of that liquid component. The pressure in the surrounding of the container (9) and thus within test cavity (1) is monitored. Monitoring is performed by a vacuum pressure sensor (7), whereas lowering pressure surrounding the container (9) is performed by a vacuum pump (5). Leakag...

An apparatus and method for detecting leaks at a fast rate in plastic bottles or similar containers wherein the bottles are secured in a multiplicity of open pocket members and arranged in a plurality of rows on a rotatable turret. A detecting gas is introduced into the bottles and they are subsequently moved to a detecting station where a detection means in the form of a mass spectrometer is activated by any gas leaking from the bottles. In a preferred manner, air is utilized to effect a sweepi...

A condenser leak searching plug having a tapered body, a recess extending into the body from the larger end face thereof, a resiliently yieldable, non-protruding planar membrane covering and sealing the open side of the recess where the membrane forms the central part of a cap of elastic material which fits over the larger end of the body and a through duct extending from the recess to the smaller end face of the body.

The device for providing a leak-tight coupling between a flexible tube and a rigid coupling connector comprises two coaxial components adapted to fit one inside the other. One component is mounted within the flexible tube while the other component is fitted around the tube. Longitudinal ribs formed on one component are adapted to cooperate with longitudinal grooves in the other component at the time of interengagement of the two components. The end of the tube is thus clamped and securely held i...

A bladder leak and rupture detector employs a low level flow sensor for detecting both bladder leaks and ruptures. False failure signals are avoided by a dual mode logic circuit which monitors for bladder leaks or low level failures only during a preselected portion of the curing cycle and at other times requires sustained flow through the sensor for a predetermined time to indicate bladder ruptures or high level failures. In either case, a warning signal is generated and the cycle may be interr...

A gas leak-detecting apparatus which comprises an alarm circuit; a gas-detecting circuit electrically separated from the alarm circuit and provided with a gas-sensitive element prepared from an oxide semiconductor; and a contactless coupling circuit for operating the alarm circuit by an output from the gas-detecting circuit.