Nohken RB Series Rotating-puddle Level Sensor

RB20F   RB21FT

RB20N  RB20F

RB21FBV  RB21FL

RB21FLT

Shaft diameter is 10mm. (8mm for long shaft version)Easy sensitivity adjustmentEasy internal component replacementPrinciple of Operation

The sensor uses a motor to rotate the paddle. The paddle rotates without material covering it. With material covering the paddle, the paddle stops rotating, which causes the motor itself to rotate. This motor rotation switches the microswitch to start/stop the motor or to give a signal output.

Rotating-puddle Level Sensor