Presence Check of Aluminum Sealing Foils via Inductive Sensor with Correction Factor 1
In order to keep spice powder fresh after the filling process and to preserve all the flavors, the jars are sealed with aluminum foil. The plastic lids are then fitted. In order to reliably detect the presence of the seal, a weld-resistant inductive sensor with correction factor 1 and increased switching distances is installed above the conveyor belt. This reliably detects the aluminum seal applied under the two-millimeter thick plastic cover with an unchanged switching distance. Thanks to high switching frequencies, this can also be achieved at high conveyor speeds.