Speed Switches

4B's line of speed switches includes: proximity, inductive, zero speed, stop motion and rotech encoders to monitor dangerous belt slip, underspeed or stop conditions on conveyors, bucket elevators and any other shaft driven machinery. Our non-contacting sensors can be used to detect screw conveyor flights, elevator bucket bolts and other moving ferrous targets. Speed switches can be connected to a PLC or to one of 4B’s hazard monitoring systems to provide alarm and/or shutdown of your machinery when dangerous conditions are detected.

View our NEW Electronics Catalogue here.

  • Stopped Motion Monitor 
  • Inductive Proximity Sensor
  • Single Trip Set Point
  • Totally Sealed Construction (Submersible)
  • Non-Contacting and Fail-Safe
Electronics Application:
Belt Conveyor, Bucket Elevator
  • Microprocessor controlled underspeed monitor
  • Signals underspeed for bucket elevators, conveyors and all rotating machinery
  • Inductive proximity sensor in 30mm diameter housing, which detects rotating metal target
  • Single set-point ~ 20% underspeed 2 wire & 5 wire versions available
  • Non-contacting & failsafe
  • Compatible with the Whirligig speed sensor mount
Electronics Application:
Belt Conveyor, Bucket Elevator
  • Microprocessor controlled speedswitch
  • Signals underspeed conditions for bucket elevators, conveyors and all rotating machinery
  • Inductive proximity sensor, in DIN style housing, which detects a rotating metal target
  • Dual set-points at 10% and 20% underspeed
  • Non-contacting & failsafe
  • Compatible with the Whirligig speed sensor mount
Electronics Application:
Belt Conveyor, Bucket Elevator
  • Magnetic Proximity Belt Speed and Belt Alignment Sensor
  • Detects Moving Steel Ferrous Targets
  • Adjustable Sensing Range of 25 – 75mm
  • Not Affected by Material Build Up
  • Stainless Steel Construction
  • High Temperature Version Available
Electronics Application:
Chain Conveyor, Bucket Elevator
  • Fully Guarded Target for Easy Mounting of Motion Sensors
  • For DIN Style and Standard Cylindrical Inductive Sensors
  • Easy Installation - Only Requires M12 Tapped Hole in the Machines Shaft or Use a Mag-Con™ for Magnetic Connection
  • Available with 1, 2, 4 and 8 Targets per revolution
  • Works with All 4B Speed Switches and Inductive Sensors
Electronics Application:
Bucket Elevator, Belt Conveyor
  • Heavy duty shaft sensor mount
  • Manufactured in stainless steel casing for heavy duty usage
  • Suitable for all Braime sensors & other industry standard cylindrical sensors
  • Not affected by shaft or machine vibration
  • 2/4 pulse target (as standard)
  • Easy to install, safe
Electronics Application:
Belt Conveyor, Bucket Elevator
  • Rotating shaft monitor
  • Polypropylene housing
  • For light duty applications, IP66
  • Provides information on shaft speed, direction, position or revolution
  • For conveyors, elevators, mixers, fans, pumps, grinders & other mechanical handling systems
  • Compatible with the "Magcon" quick-connect device
Electronics Application:
Belt Conveyor
  • Rotating shaft monitor
  • Aluminium housing
  • Provides information on shaft speed, direction, position or revolution
  • For conveyors, elevators, mixers, fans, pumps, grinders & other mechanical handling systems
  • Heavy duty versions - suitable for the most severe industrial environments, IP65
  • Compatible with the "Magcon" quick-connect device
Electronics Application:
Belt Conveyor
  • Rotating shaft monitor
  • 304/316 stainless steel housing
  • Provides information on shaft speed, direction, position or revolution
  • For conveyors, elevators, mixers, fans, pumps, grinders & other mechanical handling systems
  • Ultra heavy duty version - suitable for the most severe industrial environments 
  • IP67
Electronics Application:
Belt Conveyor
New Product
  • 4 - 20 mA Output
  • Simple Magnetic Calibration
  • Loop Powered (2 Wire)
  • Totally Sealed Construction: Submersible
  • Built In Conduit Adaptor (1/2” NPT)
  • Easy Installation with Whirligig® Sensor Mount
  • SpeedMaster™ Compatible for Accurate Testing
     
Electronics Application:
Bucket Elevator, Belt Conveyor