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Moving Coil Type Velocity Transducer

Principle of Moving coil Type Velocity Transducer

  1. A coil moves in a magnetic field according to the velocity applied.
  2. The voltage in the coil becomes a measure of the velocity when calibrated.

Description of Moving coil Type Velocity Transducer

Moving Coil Type Velocity Transducer

  1. The instrument has permanent pole pieces which generate the magnetic field.
  2. There is a pivoted arm on which a coil is mounted.
  3. There is a mass attached to the end of the coil.
  4. The whole device is contained in an antimagnetic case.

Operation of Moving coil Type Velocity Transducer

  1. The velocity to be measured is applied to the arm.
  2. Due to this coil moves in the magnetic field.
  3. A voltage is generated on account of motion of the coil in the magnetic field.
  4. The output voltage is proportional to the velocity.

Advantages of Moving coil Type Velocity Transducer

  1. The antimagnetic case reduces the effects of stray magnetic field.
  2. Damping is obtained electrically.
  3. There is high stability under varying temperature conditions.

Applications of Moving coil Type Velocity Transducer

These transducers are used for measuring velocities in linear, sinusoidal or random manner.

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