Ultrasonic Sensor   U-B MAINTAIN CONSTANT TENSION - The ultrasonic sensor is used for maintaining constant tension when using a brake for producing unwind (payout) tension, or when using a clutch for rewind tension.

The sensor measures the diameter of the roll & sends a 0-10 VDC signal to the Placid power supply. Torque is automatically varied as roll size changes, to keep tension constant. Tension is adjusted by a remotely mounted potentiometer. The sensor measures distances by sending an ultrasonic pulse of sound, and then measuring the time for the return echo pulse.

Power Input . . . . .  15-30 VDC, 35 milliamps max.                        Powered by Placid Ind. power supply. Range . . . . . . . .  3.9 - 39.3 inches (100-1000 mm) Output  . . . . . . .  0 to 10 volts D.C., 20 mAmps max.                        Push button adjustable endpoints Resolution  . . . . .  0.012 inches (<0.3 mm) Repeatability . . . .  0.02 inches (<0.5 mm) Temperature . . . . .  14 to 140°F (-10 to +60°C) Protection class  . .  IP67 (Sealed plastic case)

Download detailed set-up directions.