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Influence of AC field distribution on impedance of the conductivity cell

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Języki publikacji
EN
Abstrakty
EN
The АС impedance model of a liquid conductivity has been developed to assess the influence of electromagnetic vector potential. It has been proved that the field in a liquid conductor is quasi-static. Approximation error, even taken for very concentrated solutions (e.g. sea water), does not exceed 0.01 ppm. The calculation of resistance of the four-electrode cell is given with the account of Ampere's circuit law. Two types of errors are defined: DC error due to finite thickness of electrodes, and AC error due to presence of displacement currents when using an impedance model.
Wydawca
Rocznik
Strony
521--525
Opis fizyczny
Bibliogr. 14 poz., rys., wzory
Twórcy
autor
  • Institute of Electrodynamics, National Academy of Science of Ukraine (NANU), 56 Peremogy Ave., 03680 Kyiv-57, Ukraine
autor
  • Industrial Research Institute of Automation and Measurements, PIAP, 202 Jerozolimskie Ave., 02-486 Warsaw, Poland
Bibliografia
  • [1] Shreiner R. H., Pratt K. W.: Standard Reference Materials: Primary Standards and Standard Reference Materials for Electrolytic Conductivity, NIST Special Publication 260-142, Washington, 2004.
  • [2] Brinkmann F., Surdu M. et al: Primary methods for the measurement of electrolytic conductivity. Accred Qual Assur 8, pp. 346–353, 2003.
  • [3] Jensen H. D.: Final Report of Key Comparison CCQM-K36. 2006, http://kcdb.bipm.org/AppendixB/appbresults/ccqm-k36/ccqm-k36_ final_report.pdf.
  • [4] Moroń Z.: Pomiary przewodności elektrycznej cieczy przy małych częstotliwościach. Politechnika Wroclawska, 2003.
  • [5] Awan S., Kibble B. R and Schurr J.: Coaxial electrical circuits for interference-free measurements. Institution of Engineering and Technology, London, 2011.
  • [6] Rubinacci G. and Villone F.: Quasi-static approximations of Maxwell equations. March 2002. http://en.wikipedia.org/wiki/Quasistatic approximation
  • [7] Bard A. J., and Faulkner L. R.: Electrochemical methods. Fundamentals and applications, 2 ed., J. Wiley & Sons, 2001.
  • [8] Xiaoping S., Spitzer P., Sudmeier U.: Novel method for bulk resistance evaluation in conductivity measurement for high-purity water. Accred Qual Assur., 12, pp. 351–355, 2007.
  • [9] Palmer H. B.: Capacitance of a parallel-plate capacitor by the Schwartz-Christoffel transformation. Transactions on AIEE, vol. 56, no. 3, pp. 363–366, 1937.
  • [10] Olthuis W., Streekstra W., and Bergveld P.: Theoretical and experimental determination of cell constants of planar-interdigitated electrolyte conductivity sensors. Sensors and Actuators, vol. 24-25, no. 1-3, pp. 252–256, 1995.
  • [11] Langereis G. R.: An integrated sensor system for monitoring washing processes, 1999, ISBN 90 365 1272 7.
  • [12] Máriássy M., Pratt K.W., and Spitzer P.: Major applications of electrochemical techniques at national metrology institutes. Metrologia, vol. 46, pp. 199-213, 2009.
  • [13] Breuel U., Werner B., Spitzer P., and Jensen H. D.: Experiences with Novel Secondary Conductivity Sensors within the German Calibration Service (DKD). Measure, vol. 3, no. 2, pp. 62-66, 2008.
  • [14] ISO 31-8:1992. Quantities and units – Part 8: Physical chemistry and molecular physics.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-df90b14c-8b58-43ad-8fd0-41841a458d7c
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