  A research of inductive conductometric cell is presented. An equivalent
circuit and a mathematical model of inductive cell are given in the article.
The model takes into account sample-coil capacity (i.e. capacity formed by the
coil and the sample under study) and eddy currents. It is sample-coil capacity
that makes inductive cell applicable for measurement of electrical conductivity
of low conductive samples (specific conductance is less than 1S/m). The model
can be used to calculate impedance of inductive cell for different
characteristics of sample, materials and dimensions of cell without numerical
solving of partial differential equations. Results of numerical simulation were
verified by experiment for several devices with inductive cell. Some features
that an engineer has to hold in mind while designing a conductometer based on
inductive cell are discussed. Presented model can be useful for those who study
inductively coupled plasma.
