Brand :  Electro-Sensors
Manager :  Danny Lin
Phone :  0755 - 8384 2039
Fax :  0755 - 8384 2050 
Email : 
Website :  www.electro-sensors΅­
FB420 Shaft Speed Sensor with Relay

FB420 Shaft Speed Sensor with Relay

  ? Self-contained system with sensor and switch 
  ? Relay can be set for over-speed or under-speed
  ? Housing is explosion proof and water resistant
  ? 4-20 mA output directly proportional to shaft speed
  ? Provides real-time preventive maintenance feedback
  ? Class I, Div I (C, D) Class II (E, F, G)



The FB420 provides a 4-20 mA signal directly proportional to the rotational speed of a monitored shaft and has a 4 digit LCD display capable of displaying from 0.000 to 9,999 rpm or from 4 to 20 mA, the display is also used for calibration and trouble-shooting. The FB420 has one relay that can be programmed for failsafe over-speed alarm or failsafe under-speed alarm. Typical applications include belt conveyors, drag conveyors, bucket elevators, fans, blowers, crushers, and pumps.


Optional Mounting Magnet: MM-2.00

 ?No Drilling or Tapping Required!
? EZ-100 Mounting Bracket REQUIRED for use


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