4-102 / 4-103 Vibration Sensor

Friction Free design with outstanding life.

4-102 / 4-103


  • Friction-free design for large dynamic range and long life
  • Self-generated, high level, low impedence output simplifies your system



  • Vibration Analysis and Monitoring
  • Dynamic Balancing Equipment
  • Engineering Test and Research
  • Production & Quality Testing
  • Compressors



The fluid-damped moving elements in CEC's 4-102 and 4-103 Vibration Transducers are free of friction, assuring long life and reliability. This frictionless design also features outstanding dynamic range. It can be used to measure displacement to 0.5 inches, with low-levels limited only by system noise.

These transducers are used to measure vibration in many applications, such as fans, high speed motors, rotating machinery, in test cells and on dynamic balancing equipment. The output signal is proportional to velocity, often considered the best measurement for machine health monitoring.

The low impedance, high level output can drive AC meters and recorders without using special amplifiers, simplifying your system. These transducers use a seismic mass magnet suspended by springs, and a coil fixed to the case. The output signal results from relative movement between the magnet and coil when the case vibrates. The system is fluid-damped, and operates above its natural frequency.

The special springs which support the mass, withstand high transverse accelerations and rough handling. Positive hermetic sealing prevents damage to the instrument when used in severe environments.


  • 4-125 series discontinued, ask for replacement.


Aero Support is a customer focussed, Surrey based company providing aero engine test facility design and support solutions.

In addition to our test facility solutions, we are also a major distributor for CEC Vibration Products to our UK and worldwide customers.


Aero Support Ltd.

13 Stratford Court, Avon Road

Farnham, Surrey, GU9 8PG, UK

Tel: +44 845 0600 877

Fax: +44 845 0600 788

Email  sales@aerosupport.aero