SITRANS WS300 speed sensor

USA - SITRANS WS300 Speed Sensor

SITRANS WS300 is a low- to high-resolution shaft-driven speed sensor which operates in conjunction with a conveyor belt scale. The speed sensor provides a signal to an integrator which computes the rate of material being conveyed. At only 2.68 lbs, it is one of the lightest and most durable units ever developed for monitoring conveyor belt speed. 


With its rugged cast aluminium housing, the WS300 is suitable for outdoor installation, and its low weight prolongs bearing life. It is directly coupled to a rotating tail or bend pulley shaft to ensure accurate belt-travel readout, eliminating problems caused by belt slippage or material build-up. The WS300 converts shaft rotation into a pulse train of 32, 256, 1000, or 2000 pulses per revolution using a high precision rotary optical encoder. The digital signal is transmitted as speed input to any Siemens integrator for calculation of belt speed, flow rate and totalized weight. This low- to high-resolution speed sensor provides a frequency signal proportional to the shaft speed, enabling a range of speeds to be read accurately. The quadrature type shaft encoder prevents erroneous speed signals due to vibration or shaft oscillation. The WS300 is easily mounted and is bi-directional for either clockwise or counter-clockwise belt travel. The IS version uses an inductive proximity switch detecting rotating targets.


  • Light and rugged design; IP65 rated

  • Compact and economical

  • Easy, low-cost installation

  • Accurate belt speed detection

  • Optional resolutions for measurement over a range of belt speeds

  • Corrosion resistant


Pulses per revolution
32, 256, 1000, or 2000 pulses per revolution

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