Extra Distance Inductive Sensors Detect Presence of Aluminum Closures on Food Containers


Plastic containers, filled with liquid food products, are hermetically sealed at a Portuguese food-processing plant. Prior to containers being capped and packed in bulk, in-line testing confirms that each one has been correctly sealed. A long-distance inductive sensor, positioned directly over the packaging line, senses the presence of an aluminum-foil seal over the top of each container.