A Design of Solution for Impedance Measurement with Four-electrode
Wang Jun · Journal of Shanghai Dianji University · 2007
A solution for impedance measurement with four-electrode is designed here according to the requirements of liquid impedance measurement.The AD 8302 is used to compare the voltage vectors of liquid impedance and referenced impedance.Liquid impedance is evaluated with the ratio of gains and phase difference outputted by the AD 8302.