A Conductivity Measurement System Based on High-speed A/D Peak Sampling

Abstract

A conductivity measurement system driven by sinusoidal current is designed here, which adopts parallel sampling and holding plus a unaware high-speed A/D converter. Driven by high frequency sinusoidal currents and armed with six pairs of conductive poles of stainless steel array, the system only samples and converts the differences of the voltage’s peak and trough, weakens the pole’s polarization efficiently. Meanwhile, the filtration latency caused by the traditional analog demodulation is avoided. Such a system can be widely applied in detecting the parameters of the electro-conductivity multiphase because of its rapid signal gathering speed, stability and less complexity.