Device for objective checking for foreign bodies in...

Details Device for objective checking for foreign bodies in... Device for objective checking for foreign bodies in...

G - Physics

01

N

340/124.6

G01N 21/01 (2006.01) G01N 21/90 (2006.01) G01N 33/00 (2006.01)

Patent

CA 1065437

A DEVICE FOR OBJECTIVE CHECKING FOR FOREIGN BODIES IN OPTICALLY TRANSPARENT CYLINDRICAL CONTAINERS FILLED WITH LIQUIDS A b s t r a c t The device is based on an optical transmission arrangement in which a signal change occurs when a foreign body is present in the liquid. By means of a rotating device the cylindrical container to be tested is set in rotation and subsequently braked, Then optical testing is carried out. The light beams passing through the container are picked up by a plurality of photo electric detectors arranged above one another. The photo- detectors are divided into groups, which are each switched on sequentially be a programme control unit from top to bottom to effect the measurement, with one photodetector group being switched on when the vortex of liquid occurring as a result of the container rotation has subsided after the standstill of the container and disappeared from the field of view of the photodetector group.

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