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Piezoelectric Velocity Sensors

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YMC 311V series Piezo-velocity Transducers are solid state piezoelectric velocity measurement devices. Many vibration analysts prefer to examine vibration signals in terms of velocity (mm per second) to amplify the signal of interest. Piezoelectric Velocity Sensors inherently decrease high frequency signals allowing better measurement of low frequency vibration. They are essentially accelerometers with an internal integration circuit which will produce an output relative to velocity.



Power Supply
Output Signal Measuring Range Frequency Range
311V Series IEPE Voltage 0~12.7mm/s 3 Hz ~ 2,000Hz
312V Series +12~+30VDC 4~20mA 0~25.4mm/s 3 Hz ~ 2000Hz
313V Series ±6~±15VDC Voltage 0~50.8mm/s 3 Hz ~ 2,000Hz
  • Industrial ruggedness
  • Eliminates distortion caused by high frequency signals
  • Corrosion-resistant
  • Internally integrated to velocity
  • Miswiring protection

Ultra low-noise electronics for clear signals at very low vibration levels
Piezoelectric Velocity Sensors can reduce signal noise in many low frequency measurements. The integration circuit amplifies low frequency signals and attenuates high frequency signals. This increases the voltage output at low frequency and filters high frequency noise. The increase in low frequency voltage output reduces the noise contribution of the acquisition equipment. The inherent filtering reduces intermodulation (washover) distortion caused when high frequency signals overload the amplifier and may reduce "ski slope" noise in many applications.


Paper machines: Steam seals in paper machine dryers can leak and produce very high frequency noise. This high frequency noise can overload normal accelerometers and "washover" low frequency information. Piezoelectric Velocity Sensors attenuation of high frequency signals ensures that quality data can still be taken in areas prone to steam leaks.
Pumps: Pumps and piping are susceptible to cavitations problems. The collapse of the cavitations pockets produces very high frequency noise that can also overload an accelerometer. Piezoelectric Velocity Sensors allow effective measurement of normal vibration in the presence of severe cavitations.