Alignment Sensors

4B's line of sensors and switches are designed to detect (mis)alignment and motion on bucket elevators & belt conveyors.

4B's WDA sensor can also be used as a slack chain detector on drag chain conveyors.

View our NEW Electronics Catalogue here.

  • Force Activated Belt and Pulley Alignment Sensor
  • Instantaneous Misalignment Indication
  • Hardened Stainless Steel Contact Face
  • External Test Feature
  • Output LED Indication
  • Not a Rub Block
Electronics Application:
Bucket Elevator, Belt Conveyor
  • Rugged housing for the most arduous environments
  • Fail safe magnetic sensor immune to build up of material
  • Powerful sensing range of 12 – 50mm, easily adjusted on the sensor or at the control unit
  • Links direct to PLC or to independent control unit A400 Elite or Watchdog Elite
Electronics Application:
Bucket Elevator
  • Conveyor Belt Misalignment & Rip Detection System
  • Electro-mechanical system designed to detect dangerous misalignment of the conveyor and also detection of belt tear damage
  • Triggers an alarm at 20º and a shutdown of the machine at 35º
  • Easy installation
  • Robust design
  • No calibration required
  • Nylon rollers as standard; stainless steel rollers available on request
Electronics Application:
Belt Conveyor
  • 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
  • Electro-mechanical belt alignment sensor
  • Rollers available in engineering grade nylon or stainless steel
  • Unique construction means switches are not "handed"
  • 2 NON-mercury switches in each assembly
  • Outputs at 15° & 30° for alarm & stop
  • Can be connected to independent control unit CBS2V0A 
  • Adjustable bracket, available in stainless steel or mild steel
Electronics Application:
Belt Conveyor