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Diameter measurement of coils

Steel strip coils are used in a variety of industries, including the automotive industry to transport wide flat metal parts. These coils present a unique set of challenges when unwound. For instance, the material’s diameter and weight are both enormous—as is the desire to be able to process the strip further. Here for continuous monitoring and precise detection of the uncoiling process, distance sensors from Micro-Epsilon are required. 

An optoNCDT ILR2250-100 sensor detects the coils using phase comparison and tracks them precisely, ensuring that the uncoiling process runs smoothly and at high quality. The sensor follows a simple working principle, it continuously measures the distance to the coil from the mounted position. When the coil unwinds, the diameter decreases and leads to an increase in the distance. This change in distance is detected by the sensor, and then measured values are transmitted to the control system for evaluation. Above all advantages offered by the equipment from Micro-Epsilon, the ILR2250 sensors are unaffected by harsh environmental conditions or demanding metal surfaces, both polished and matte.