other sensors

US sensors - NR7 / NR2C

overview

By measuring the distance from a fixed UltraSonic sensor to the rotating web, a Digital Controller (i.e. MEROBEL’s DGT 300) is easily able to calculate anytime the actual web diameter. The knowledge of real time web diameter variation gives then the opportunity to make the torque applied to web shaft variable, and then to keep the tension stable, despite of the web diameter variation all along the unwinding or rewinding process.

features

- Ultra compact - Easy to install on any existing equipment - Easy calibration - Compatible with almost all existing type of papers, films, foils and wires (take up flyers) - CE- CEM compatible NR7 Working zone 100 to 1000 mm Minimum target width : 100 mm Emission freq. : 240 Hz NR 2C Working zone 400 to 2500 mm Detection angle : 10 ° Emission freq. : 120 Hz