Rotary Paddle

Rotary paddle level switches are robust electromechanical sensors designed for point level detection in silos, hoppers, and bins containing bulk solids and powders. The device operates via a low-speed motor that rotates a measuring paddle; when the material level rises to reach the paddle, the resulting physical resistance stalls the motor and triggers a microswitch to signal a high, mid, or low level alarm. Conversely, when the material level drops, a tension spring returns the motor to its original position, restarting the rotation and resetting the signal. Their simple, durable construction makes them highly effective for monitoring a wide range of materials, from heavy grains and plastic pellets to fine cement, regardless of the material’s dielectric constant or moisture content.