Experimental characterization of an apparatus for electrical impedance tomography

Electrical impedance tomography (EIT) is a promising monitoring tool for a rapid and fairly economic mapping of underground pollution in soils. It requires a measuring system capable to measure the power dissipated during current injection, between pairs of selected electrodes, placed around the prospected soil. In order to be successful in the tomography inversion it is necessary to guarantee a certain level for the target uncertainty in the measurement. In this paper we show the results, both theoretical and experimental, for the characterization of a measuring apparatus for EIT in terms of its standard uncertainty.