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The Model 640/641/645/646 B Series Indusrtial 4-20mA Sensors combine the capabilities of a piezoelectric vibration sensor and a 4-20mA vibration transmitter.
The sensor outputs a 4-20mA signal that is proportional to the overall velocity or acceleration of the machinery. Ideal for monitoring the vibration of process equipment such as fans, motors and pumps, the output of the sensor is used for process control or predective maintenance. There are many options in this series. 


  • Embedded Piezoelectric Accelerometer for improved accuracy and frequency response
  • Vibration range can be in Acceleration or Velocity
  • Allows for continuous vibration monitoring of critical applications
  • Reduces sophisticated vibration analysis