SITRANS WS300 SPEED SENSOR OPERATES IN CONJUNCTION WITH A, CONVEYOR BELT SCALE, PROVIDING A SIGNAL TO AN INTEGRATOR WHICH, COMPUTES THE RATE OF MATERIAL BEING CONVEYED. AT ONLY 1.22 KG, (2.68 LB), IT IS ONE OF THE LIGHTEST AND MOST DURABLE UNITS EVER, DEVELOPED FOR MONITORING CONVEYOR BELT SPEED. WITH ITS RUGGED, CAST ALUMINUM HOUSING, IT IS SUITABLE FOR OUTDOOR INSTALLATION, AND, ITS LOW WEIGHT PROLONGS BEARING LIFE.