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The National Academy of Sciences of Ukraine

The Institute of Electrodynamics

About Institute



O.O. Mikhal*
Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy, 56, Kyiv-57, 03680, Ukraine,
е-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

The paper considers the research materials obtained during the research work on the topic "Creation of a scientific and methodological basis for improving the accuracy of conductometric measurements". The main scientific and technical results are aimed at the further development of the theory of measuring the imitation of conductors with an ionic conductivity type and consists in the development of three mathematical models for calculating errors built on the basis of chain-field problems and allowing to take into account nonlinearity of power lines of current density predetermined: changes the nature of the operating current, in particular the influence of the vector magnetic potential, the presence and boundary conditions on current and potential electrodes, the real geometry of current electrodes (the presence of openings and conical holes); two methods of constructing balancing bridge measuring circles that provide the invariance of transformation to non-informative parameters of the electric mode, which are commensurable or significantly exceed the informative parameter; two methods for determining the main metrological characteristics of 6-8 decades transformer bridges for measuring resistance sensors. References 12, figures 13.
Key words: conductometry, cell, electrolytic conductivity, error, impedance

1. Cutkosky R.D. Four-terminal pair networks as precision admittance and impedance standards. IEEE Trans. Comun. Electron. 1964. Vol. 80 (70). Pp. 19 – 22. DOI:
2. Kibble B.P., Rayner G.N. Coaxial AC Bridges. Teddington: NPL Management Ltd. 1984. 203 p.
3. Awan S., Kibble B., Schurr J. Coaxial Electrical Circuits for Interference-free Measurements. London: The Institution of Engineering and Technology. 2011. 321 p. DOI:
4. Mikhal A.A., Warsza Z.L. Impact of AC electric field non-uniformity on impedance of the conductivity cell. XXI IMEKO World Congress. Measurement in Research and Industry. August 30 - September 4, 2015. Prague, Czech Republic. Pp. 2266 – 2270.  DOI:
5. Mikhal A.A., Warsza Z.L. Influence of AC field distribution on impedance of the conductivity cell. Measurement Automation Monitoring Nov. 2015. Vol. 61. No 11. Pp. 521 – 525.
6. Mikhal A.A., Glukhenkyi A.I., Warsza Z.L. Factors of AC Field Inhomogeneity in Impedance Measurement of Cylindrical Conductors. Recent Advances in Systems, Control and Information Technology, Advances in Intelligent Systems and Computing 543. Springer. 2017. Pp. 535 – 545. DOI:
7. Mikhal A.A., Warsza Z.L. Geometric part of uncertainties in the calculation constant of the primary four electrode conductivity cell. ACTA IMEKO June 2015. Vol. 4. No 2 . Pp.18 – 22. DOI:
8. Mikhal A.A., Warsza Z.L., Gavrylkin V.G. Correction of the Influence of not Ideal Geometric Profile on the Constant of Primary Cell. Advanced Mechatronics Solutions. Advances in Inteligent Systems and Computing 414. Springer. 2015. Pp. 239 – 252. DOI:
9. Mikhal A.A., Warsza Z.L. Electromagnetic Protection in High Precision Tri-axial Thermometric AC Bridge. Progress in Automation, Robotics and Measuring Techniques. Vol. 3 Measuring Techniques and Systems. Advances in Intelligent Systems and Computing 352. Springer. 2015. Pp.147 – 156. DOI:
10.Mikhal A.A., Warsza Z.L. Simple Methods to Measure the Additive Error and Integral Nonlinearity of Precision Thermometric Bridges. Progress in Automation, Robotics and Measuring Techniques. Vol. 3. Measuring Techniques and Systems. Advances in Intelligent Systems and Computing 352. Springer. 2015. Pp. 157 – 170. DOI:
11.Mikhal A.A., Warsza Z.L. Bisection method for measuring the Integral Nonlinearity of high Precision Thermometric Bridges. Symposium on Temperature and Thermal Measurements in Industry and Science, TEMPMEKO 2016. Poland, Zakopane. June 26 – July 01, 2016. Pp. 281.
12.Mikhal A.A., Warsza Z.L., Gavrylkin V.G. Primary Standard of Electrolytic Conductivity Based on the AC Four Electrode Cell. Challenges in Automation, Robotics and Measurement Techniques. Advances in Intelligent Systems and Computing 440. Springer. 2016. Pp. 867 – 879.  DOI:

Received 13.06.2019