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Fill Level Monitoring of Packaged Food Products in Checkweighers with Retro-Reflex Sensors for Transparent Objects

In the food industry, goods that do not meet quality standards are sorted out into checkweighers and placed in containers after the weighing process. In order to check their fill level, a retro-reflex sensor for transparent objects is installed. The set, consisting of retro-reflex sensor and reflector, is aligned in such a way that the light beam is only permanently interrupted at a certain fill level. The sensor then switches and sends the signal to empty the container. Transparent objects made of glass, PET, laminated packaging or trays are reliably detected.

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Retro-Reflex Sensors for Transparent Objects

In addition to detecting glossy, chrome-plated or reflective surfaces, retro-reflex sensors for transparent objects also detect and count transparent objects such as glass or film using red light. Objects are detected by interrupting the light beam between the sensor and the reflector.

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