The US.3 is an ultrasonic roll diameter sensor specifically designed to read the diameter of a roll as it unwinds. It typically controls the web tension in open-loop tension control systems in combination with a pneumatic brake, a clutch on rewinding stations, or a motor. It can also support other web tension controllers or tension regulators in closed-loop systems. It is the integral component in taper tension control systems to assure consistently wound rolls.

By emitting ultrasonic pulses to detect roll distance, US.3 provides a proportional analog signal that can directly regulate brakes, clutches, and other tension-related devices. Its advanced design enables dynamic and precise adjustments based on a remote setpoint, guaranteeing stable web tension and consistent quality.

Thanks to its compact design and easy installation, the US.3 ultrasonic diameter sensor is the ideal choice for demanding industrial applications like slitter rewinder machines, welding lines, and other web tension control processes involving laminates and films. Additionally, PC-based programming and calibration enhance its versatility, allowing operators to customize parameters for specific materials and production requirements.