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Mathematical Model of an Inductive Measuring Cell for Contactless Conductometry

2013/04/29 by Yury S. Semenov, Semenov, Yury S.
Computer Science · Engineering · #Chemical Physics (physics.chem-ph) #Electrical and Bioimpedance Tomography #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Sensor Technology and Measurement Systems

paper · pdf · doi:10.48550/arxiv.1304.7805

openalex publication_date 2013/04/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

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.

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