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Leuze sensors deliver quality control at Gropper dairy

Leuze sensors deliver quality control at Gropper dairy

Jürgen Kreutz from the electrical maintenance department at Gropper dairy had been looking for a 'fresh' idea for the full-crate check at the end of the cup production line. His idea of solving this task using LRS 36 light section sensors from Leuze electronic reduces the number of sensors, simplifies the application, saves manual conversion required due to the frequent format changes and makes this particular step in the quality assurance procedure more reliable.

The diversity of products coming along the line had been presenting a problem. Yogurts, desserts or beverages are filled in cups with diameters from 75-95mm and filling quantities from 80-500g. The design of the cups ranges from classic yogurt cups with foil lid to versions with additional snap-on lid. Owing to the diversity and the frequent format changes, complex manual conversions were necessary here to align the respective sensor combin-ations. Neither light scanners nor ultrasonic sensors could achieve the desired reliable results. After trying out various installations with different systems, a visit to the Leuze electronic stand at a trade show gave Mr Kreutz his fresh idea to use Leuze LRS light section sensors.

Similar to a laser scanner, light section sensors detect the presence of objects by scanning. A single LRS 36 sensor is able to detect one or more objects in an undefined position. A special advantage is that the transmitter and receiver are integrated in a compact housing. In total, up to 16 inspection tasks each with up to 16 analyses are available.

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