Advantages and disadvantages of LVDT

One of the key advantages of an LVDT is that there is no physical electrical contact across the transducer position sensing element. An LVDT output is clean data has an infinite resolution and a very long life cycle. Here this post gives information about the benefits and drawback of LVDT to better understand this topic.

Advantages of LVDT:
  • LVDT has low power consumption
  • It has a higher sensitive
  • It has a ruggedness
  • Easy to align and maintain
  • It has a wide range
  • It has a lower hysteresis loss
  • It has a higher measurement range 
  • It is a frictionless device
  • It offers a high resolution which is greater than 10 nm
  • It is less in weight
  • It is smaller in size
  • It is solid and robust, simple in construction
  • It has excellent repeatability
  • It has a lower output impedance
  • It is not affected due to the external environment
  • The sliding core does not touch inside the tube and hence it can mover without friction
Disadvantages of LVDT:
  • Sensitive to a stray magnetic field
  • It has large primary voltage produce distortion in an output
  • Temperature affects the performance
  • It has limited dynamic response
  • Vibration due to displacement can affect the performance of the LVDT device
  • DC output external demodulator is required
  • Large displacement is needed for small output