The vibration monitoring industry has specialized jargon that is commonly used when talking about vibration sensors, accelerometers and associated applications. It's important that you understand common terminology to communicate effectively with vibration monitoring, reliability, condition monitoring and process automation professionals. We hope you find our glossary useful to find specialized terms and definitions used across vibration, condition monitoring and predictive maintenance.


Q (Quality Factor) (Amplification Factor)

The quantity Q is a measure of the sharpness of resonance or frequency selectivity of a resonant vibratory system having a single degree of freedom, either mechanical or electrical. It is often used for the ratio of the sensitivity of a transducer, at its resonance frequency, to its reference sensitivity. It is also used to express transmissibility at resonance).


A circuit that is configured to provide electrical characteristics similar to those of a true differential circuit over a narrow range of operating conditions.