Title :
A solution for measuring the dielectric spectroscopy of conductive aqueous solution
Author_Institution :
Sch. of Electr., Shanghai Dianji Univ., Shanghai, China
Abstract :
A solution for measuring the dielectric spectroscopy of conductive aqueous solution at low and medium frequency is recommended here. The measuring system mainly consists of waveformer, four electrode probe, vector voltmeter and DSP as a controller. Electrode polarization causes serious problem in measuring the capacitance of conductive liquid when the frequency is below 200kHz. Four electrode probe is developed to solve the problem for the current is flow through the outer pair of electrodes, the inner pair of electrodes measures the voltage drop of the solution. The current flow through the inner pair of electrodes must be strictly controlled, for electrode polarization will become serious as the current increases.
Keywords :
dielectric liquids; dielectric measurement; electrodes; polarisation; spectroscopy; DSP; conductive aqueous solution; current flow; dielectric spectroscopy; electrode polarization; electrode probe; measuring system; vector voltmeter; voltage drop; waveformer; Current measurement; Dielectric measurements; Dielectrics; Electrodes; Frequency measurement; Impedance; Impedance measurement; RF; capacitance; electrode polarization; liquid;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Conference_Location :
Harbin, Heilongjiang
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6024053
