RP80 - Low Cost Rotary Paddle Switch

Level switches for solids

This range of switches is used for solid materials such as powders, granules and pellets.

The operating principle for the Hycontrol range of paddle switches is very simple. A unit consists of a motor assembly and a shaft with a paddle attached to the end of it. The paddle is mounted through the bin wall at the top, middle or low level of a bin depending on the application.

During normal operation with no material present, a synchronous motor rotates the paddle at one revolution per minute. When the paddle rotation is impeded by an in-fill of material that surrounds the paddle blade, the motor will stall and cause a microswitch to change state to indicate an alarm or provide a control function.

This switch has a torque adjusting mechanism based on a spring setting. This provides adjustment for light powders or denser materials. The RP range is all supplied with a triple shaft seal to prevent ingress of dust up the shaft into the housing.

This low-cost technology is excellent for solid products such as cement, sand and plastic pellets. The Hycontrol range is available with various extension lengths and paddle shape options.

Product Highlights

  • High-temperature options to 200°C
  • Simple installation via 1” BSP PC
  • Stainless steel construction
  • Adjustable insertion length
  • Triple shaft seal for long motor life 
  • Very price competitive
  • Rugged aluminium housing
  • Multiple paddle designs and materials
  • Adjustable sensitivity
  • Two-year warranty on motor

Technical Data

  • Measuring Length: 0.5m - 1.5m
  • Ground Level Test: No
  • Temperature Range: -40ºC - 85ºC
  • ATEX option: No