Film Tear and Fill Level Monitoring in Packaging Systems with Ultrasonic Distance Sensor

Colorful, glossy or transparent films are used in packaging plants to ensure that products are airtight and securely packed. These are conveyed by rolls and attached around the objects. Ultrasonic distance sensors monitor the roll diameter to ensure continuous material flow. Two independent switching outputs signal when there is little film left on the roll and when the roll is empty and needs to be replaced. In addition, the sensor checks whether the film is open or torn.