4-118 Vibration Sensors

Space Saving and Light Weight Vibration Sensors

4-118 Vibration Sensors


- Miniature, for space limited applications
- Self-generated, high level, low impedance output
- Weighs only 2.2 ounces
- Operates to +500°F (+260°C)s


- Self-generated, high level, low impedence output
- Operates to +500°F (+260°C)
- Weighs only 2.2 ounces


CEC's miniature 4-118 Vibration Sensors are especially valuable where space is limited, and where heavier sensors would invalidate your results. These sensors can be used in high temperatures, have low sensitivity to transverse accelerations, and can be mounted in any plane. The measurement system is simplified because the low impedance, high level output can drive AC meters and recorders without using special amplifiers.

These features make them suitable for many applications on jet engines, turbines, high speed motors, superchargers, internal combustion engines and in test cells. CEC’s 4-118 Vibration Transducers use a seismic mass coil, suspended by springs, moving on bearings of gold and sapphire. A high flux magnet is attached to the base. The output signal results from relative movement between the magnet and coil when the case is in motion.

This magnetically damped system operates above its natural frequency so the output is proportional to velocity. The gold-on-sapphire bearings provide nearly friction-free movement, extending the instrument life and reliability.

These instruments are available in two configurations: the 4-118-0001 with an integral cable, and the 4-118-0002 with a top connector for a detachable cable.