Elpatronic Ag

Martin Rosatzin

Peter Gysi

Peter M Robertson

Daniel Wildmann

Theo Huesser

Peter Pirani

Thaddaus Jasny

In a method of testing a function of at least one detector at an inspection station (S) for containers, particularly in an inspection unit (R) for multi-trip bottles, a test gas is fed from a source (10) to the inspection station, or as the case may be to the detector(s), at periodic intervals.

Method of testing a function of a detector at an inspection station and

On a distributor head for distributing gas samples removed from bottles requiring inspection to the connections for two mass spectrometers, the feed passageways form alternative paths. These different paths are contained in a replaceable part or a switchable valve arrangement. This allows easy changeover from operation with two mass spectrometers to operation with one mass spectrometer, so facilitating servicing of the mass spectrometers.

Apparatus for the inspection of containers

To test a bottle for contamination, the bottom of the bottle is laterally illuminated with a measuring light beam from a source. This measuring light beam is deflected, as if in a waveguide, in the ring of residual liquids at the bottom of the bottle. Light reemerging from the residual liquid is imaged on a detector by an imaging lens. The detector measures the spectral composition of the deflected light and compares this with theoretical values which should be yielded by the liquid with which the bottle was last filled. If deviations from the theoretical values are excessive, the bottle is rejected. The process described provides a simple way of determining whether a multi-trip bottle has contained an extraneous liquid.

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Embrach, Switzerland

Martin Rosatzin