EFFECTS OF STRAY CAPACITANCE TO GROUND IN BIPOLAR WATER IMPEDANCE MEASUREMENTS BASED ON CAPACITIVE ELECTRODES

Carles Aliau-Bonet, Ramon Pallas-Areny

Abstract

Liquid impedance measurements based on capacitive (or contactless) electrodes overcome electrode polarization problems but are affected by stray capacitance from the material being measured to ground, the same as measurements with direct-contact electrodes. This study shows that the effects of that capacitance depend on the impedance being measured and for bipolar impedance measurements they increase when the ratio between that stray capacitance and electrode capacitance increases.

Keywords

capacitive electrodes, stray capacitance to ground, impedance measurements

Download

IMEKO-WC-2015-TC4-138.pdf

DOI

-

IMEKO TC

TC4 - Measurement of Electrical Quantities

Back to the proceedings