KA/KAX Rotary Paddle Level Switches

Rotary Paddle Bin Level Indicators Models KA & KAX by Monitor Technologies

Model KA/KAX Rotary Paddle Level Switches

Point Level Indicator

Rotary Paddle Level Switches

  • KA/KAX Point Level Sensor for Bins, Silos, Hoppers and Other Vessels Storing Bulk Solids
  • Twist On/Off Cover - No More Bolts!
  • Motor Shuts Off When Paddle is Impeded to Significantly Extend Motor Life and Reduce Maintenance Costs
  • Wiring Access: 2 Conduit Entrances
  • Competitive Price Makes The Monitor Bin Level Indicator Your Best Value
  • Three Bearing Design With Sealed Bearings Last Longer
  • Built-In Slip Clutch Extends Life
  • Hazardous Location Approvals Available (Model KAX has ATEX/IECex haz loc approvals)
  • Standard KA /KAX Units Rated to +300°F (+149°C)
  • Hi-Temp Models Rated to +750°F (+399°C)
  • Unique Low Voltage DC Design Available


Monitor's KA / KAX line of rotary paddle bin level indicators consist of the most reliable, rugged and economical point level control sensors available for detection of dry bulk materials. These easy to install switches are proven performers in a wide variety of bulk materials. Monitor's paddle switches can be used to eliminate bin overflow, maintain a predetermined material level, indicate plugging of conveyors and pneumatic lines or provide any of a number of level control functions. Unlike many other available paddle units for bins and silos, Monitor's paddle level indicators (sensores de nivel) incorporate a feature that automatically shuts off the motor of the unit when the paddle is in a stalled position, which both extends the life of the motor and minimizes maintenance.


  • Complete motor shutoff prevents motor burnout and extends the life of the unit
  • Twist on/off cover means no bolts to hold or lose - Hassle- free housing design
  • UL, CSA and ATEX/IECex hazardous location approvals (KAX)
  • 1-1/4” NPT or 1-1/2” BSPT process connection
  • Two conduit connections provide easy wiring access (M20 cable glands provided with Model KA units with BSPT process connection)
  • Built-in slip clutch protects motor and drive gears from excessive rotational forces
  • Three bearing design with sealed bearings fully minimizes drive shaft loads and drag providing extended life.
  • Interchangeable paddle assemblies increase the paddle unit’s versatility
  • Built-in signal delay prevents false signaling
  • Field adjustable sensitivity
  • High operating temperature up to 300°F (149°C) (Hi-temp version up to 750°F (399°C))