SITRANS LPS200

Key Features

• Proven rotating paddle technology for reliable level detection in bulk solids

• High-quality sealed mechanical design ensures durability and protection against dust and moisture

• Flexible power supply options, compatible with a wide range of systems

• Special friction clutch protects the device from damage caused by falling material

• Rotatable housing for easy installation and cable connection

• Optional sensitive paddle for low bulk density materials down to 15.06 g/l (0.94 lb/ft³)

• Compact paddle fits easily into existing process connections

• Available in high-temperature and extended-length versions

• Optional fail-safe detection in case of paddle stall, improving system reliability

• SIL 2 certified, compliant with IEC 61508/61511 functional safety standards

Typical Applications

• Level detection in grains, animal feed, cement, plastic pellets, sawdust, and other dry bulk materials

• Suitable for use in silos, bins, hoppers, and heavy-duty industrial environments

• Operates effectively even in low-density, adhesive, or high-vibration conditions

Operating Principle

A low-speed gear motor rotates the paddle. When no material is present, the paddle spins freely. When material covers the paddle, the movement is restricted and a microswitch detects this change, triggering an output signal. When the material level drops, the paddle resumes rotation and the relay resets to its original state.

The device’s adjustable sensitivity allows stable operation even with buildup on the paddle.

Optional Configurations

• Available in standard, extended shaft, or rope extension versions

• Paddle types include:

  • Standard paddle

  • Hinged paddle

  • Rectangular paddle for light materials