4-128 Vibration Sensor

Lightweight and Simplified Vibration Sensor

4-128 Vibration Sensor


- Self-generated, high level, low impedence output
- Operates to +700°F (+900°F versions are available)
- Weighs only 2 ounces


- Aircraft Engines
- Industrial Turbines
- Test Cells


CEC designed the 4-128 Vibration Sensor for turbine applications. You can use them in turbine hot sections where high temperatures can cause problems with other sensor. The system is simplified due to the low impedance, high level output that can drive AC meters, recorders, and control electronics without using special amplifiers. They have low sensitivity to transverse accelerations, and you can mount them in any plane.

These instruments are especially valuable where space is limited, and where heavier transducers would invalidate test results. They adapt easily to your installation because models are available in a variety of mounting configurations, connector orientations and sensitivities. Rugged construction and design simplicity insure high reliability and long service life. The 4-128 is factory repairable.

CEC’s 4-128 Vibration Transducers employ a seismic magnet that moves on precision bearings. A coil is attached to the case, and movement between the magnet and coil produces the ouput signal when the case vibrates. This air-damped system operates above its natural frequency and provides output proportional to velocity.