초록 ▼

A method and device for testing containers, the method calling for a difference in pressure to be generated between the pressure inside the container and the pressure immediately surrounding the container, the behavior of one of these pressures permitting the gas tightness of the container to be ass

A method and device for testing containers, the method calling for a difference in pressure to be generated between the pressure inside the container and the pressure immediately surrounding the container, the behavior of one of these pressures permitting the gas tightness of the container to be assessed. A pressure value is stored and subsequently compared with one of the pressures, the stored pressure value being stored electronically and compared with at least one value of the output signal from a pressure sensor. The container is housed in an enclosure which is connected to a pressure or suction line, and a pressure-value storage unit, a comparator unit and a pressure sensor are associated with the pressure or suction line.

대표청구항 ▼

[ I claim:] [1.] A method for testing containers in which a pressure difference is created between a pressure inside the container and a pressure in its environment, and from the behavior of one of the pressures it is established whether the container satisfies predetermined test conditions, wherein

[ I claim:] [1.] A method for testing containers in which a pressure difference is created between a pressure inside the container and a pressure in its environment, and from the behavior of one of the pressures it is established whether the container satisfies predetermined test conditions, wherein, after said one of the pressures reaches a predetermined test value as said pressure difference is being created and after creation of said pressure differences, in an equalization phase said one of said pressures rereaches said predetermined test value, the change in pressure of said one of the pressures is measured with a pressure sensor and with respect to said predetermined test value immediately after the time at which said one of said pressures rereaches said predetermined test value and utilizing results of said measuring for establishing whether the container satisfies said predetermined test conditions.