Methodological errors due to a non-cylindrical surface in a Jones-type cell with a removable center extension tube

Authors

DOI:

https://doi.org/10.21014/actaimeko.v12i4.1604

Keywords:

Electrolytic conductivity, conductivity cell, measurement error, Jones-type cell, radial displacement

Abstract

The article shows an idealized model of a Jones-type cell with a removable central extension tube. Two main factors leading to the cylindricity distortion of the inner surface of the cell are considered. These are radial displacement and tube diameter inequality. Based on the finite element method (FEM), errors in measuring the resistance of a liquid column caused by the non-uniformity of the current density distribution inside the cell were determined. The methodological error with respect to the idealized model was estimated for each factor separately and in combination. The Authors show that at a radial displacement of 0.6 mm, the error can reach 0.1 %. The same error value occurs when the inequality of the diameters is only 20 μm.

Author Biographies

Oleksii Stennik, Ukrmetrteststandart, Metrologichna str 4, 03143 Kyiv, Ukraine

Electrochemical division, Researcher

Oleksandr Mikhal, Institute of Electrodynamics of the National Academy of Sciences of Ukraine, Peremohy ave 56, 03057 Kyiv, Ukraine

Lead Researcher

Dmytro Meleshchuk, Institute of Electrodynamics of the National Academy of Sciences of Ukraine, Peremohy ave 56, 03057 Kyiv, Ukraine

Researcher

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Published

2023-12-06

Issue

Vol. 12 No. 4 (2023)

Section

Research Papers

License

Copyright (c) 2023 Oleksii Stennik, Oleksandr Mikhal, Dmytro Meleshchuk

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