Industrial, Piezovelocity sensors use piezoceramic in the annular shear mode and provide 100mV/in/sec. They use the ŽICP / ŽIEPE industry standard transmission mode. Piezovelocity sensors use an internal integration circuit which inherently decrease high frequency signals allowing better measurements of low frequency signal.
Paper machine dryers (when steam leaks), pumps (cavitation high frequency noise) are prone to such phenomenom.
Note about old compression design accelerometer.
Compression design accelerometer could not be used for piezovelocity sensor because they are
- sensitive to base strain
- sensitive to cable motion
- too big (compare to shear design) for the same charge output.
Annular shear accelerometer is the only valid design for such sensor.
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100 mV/in/sec (4 mV/mm/sec)
100 mV/in/sec (4 mV/mm/sec)