A so called ”Drift Compensation” feature is eliminating this effect. The charge signals in the amplifier resulting from electrical and thermal drift are detected and appropriate compensation applied. It therefore ensures that on the one hand the analog output signal of the change amplifier remains within a defined range of values, and on the other hand an accurate and stable measurement signal is available even when measuring over long periods of time.
Switchable drift compensation is now a standard function of Kistler charge amplifiers. Together with PiezoSmart automatic sensor identification, it represents a new standard in charge amplifier technology for engine indication.