A velocity transducer is a seismic transducer which converts velocity motion into a proportional electrical signal. Sometimes called "Seismoprobe". (Bentley Nevada Corporation, Field of Rotating Machinery Measurement, Monitoring and Analysis)
See Also
9.12 - Velocity of Sound and its Propagation Rate are Proportional
9.2 - Wave Velocity Propagation Questions
Accelerometer
Motion
Table 9.1 - Velocity of Sound in various Materials
Transducer
velocity