The time constant in piezoelectric measurements and how to benefit from it. Explained in 4 minutes.

In this video, Kistler expert Martin Stierli reveals the secrets of the time constant, an interesting characteristic of piezoelectric measurements.
Piezoelectric sensors require a so-called charge amplifier to convert the sensor's charge signal into a proportional voltage. The quasi-static measurement mode allows to see very slow signal components, but also limits the total measurement time. By using a time constant that results in a high-pass filter characteristic, the limitations of a quasi-static measurement can be overcome for certain applications, but you have to know what you are doing.
Martin Stierli, data acquisition and signal conditioning expert at Kistler, shows you some examples where using a time constant makes sense and explains the limitations you should be aware of when measuring in a purely dynamic mode. While pulsation or vibration signals are generally perfectly suited for purely dynamic measurements, special attention must be paid to individual pulses or pulse sequences when measuring with a time constant.
Check out all the details of this complex topic in the video and do not miss our other videos on charge amplifiers and data acquisition - starting with the selection of the right charge amplifier device.
You can also find more info on signal conditioning and data acquisition here: www.kistler.co...
#PiezoelectricMeasurements #SignalConditioning #ChargeAmplifiers

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