Presence Check of Steel Coils with Ultrasonic Distance Sensors

In the metalworking industry, steel coils are unwound and processed continuously. To ensure a continuous material and process flow, an ultrasonic distance sensor is mounted above the rollers. This reliably measures the distance between the sensor and the material and thus determines the coil size and the remaining quantity on the roll. Adverse ambient conditions such as dust or oil mist, ambient light and dark or shiny surfaces do not affect the measurement data accuracy.