Rotalog Model 4 Level Probe

Rotary Paddle High Level Indicator, flange mounted from above the material

For specific point indication the Rotalog Paddle Switch is second to none. Thousands are in operation giving this unit a reputation for being reliable, durable and effective.

Three main models are available, in a range of voltage and paddle options to suit any level indication requirements.

The Rotalog rotary paddle switch by Mucon is designed to signal the presence, or absence, of bulk materials such as powders, chemicals, chips and granules. It is ideal for hoppers, silos and bunkers as well as for blockage detectors on conveyor chutes. The detection of the material is achieved by a paddle which is rotated inside the container; if material impedes the rotation of the paddle, the control signal changes and after approximately half a second the motor circuit switches off. In this state all active parts are stationary; therefore no wear takes place.

Model 4

High Level

Top mounting, 4-vane paddle extension shaft and guide tube fitted with guide tube-seal (Shaft length to required product material level)


  • 316 Stainless Steel contact parts
  • ABS Body
  • IP65 Sealing


  • Proven reliability over many years and in hundreds of installations
  • Dust tight and weatherproof to IP65
  • Adjustable sensitivity
  • Supplied complete with stainless steel mounting flange
  • Proven reliability
  • Low power consumption when running, when stalled by presence of product, no power is consumed at all adding to the longevity of Rotalog Rotary Paddle Switches
  • Failsafe versions warn of motor failure
  • Paddles to suit application
  • Operating voltages include 24v DC, 24v AC, 48v AC, 110v AC and 240v AC
  • Special models suitable for operating up to 150 degrees Centigrade

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