Glossary

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.

 






BAND-PASS FILTER

A Filter having a single transmission band extending from a lower cutoff frequency greater than zero to a finite upper cutoff frequency.

BAROMETRIC PRESSURE

See ATMOSPHERIC PRESSURE.

BASE STRAIN SENSITIVITY

The sensitivity to strains applied to the base by bending, in the absence of any rigid body motion of the transducer. Usually expressed in equivalent measurand units at 250 μstrain applied to the mounting structure.

BEL

The ratio of two amounts of power expressed as a logarithm to the base 10. A decibel (dB) is one-tenth of a bel.

BEST STRAIGHT LINE

A line midway between the two parallel straight lines closest together and enclosing all output vs. measurand values on a calibration curve.

BRIDGE

A Wheatstone bridge configuration utilizing four resistive elements.

BRIDGE RESISTANCE

See INPUT IMPEDANCE and OUTPUT IMPEDANCE.

BROADBAND

Vibration signals that are unfiltered. Signals at all frequencies contribute to the measured value.