An Improved Electrochemical Method for Moisture Determination in Mineral Oil

Autor:	M. Lyutikova
Rok vydání:	2020
Předmět:	010302 applied physics Materials science Moisture Electrolysis of water Transformer oil Sorption Pulp and paper industry 01 natural sciences Matrix (chemical analysis) Coulometry Reagent 0103 physical sciences medicine Electrical and Electronic Engineering Mineral oil medicine.drug
Zdroj:	IEEE Transactions on Dielectrics and Electrical Insulation. 27:2172-2178
ISSN:	1558-4135 1070-9878
DOI:	10.1109/tdei.2020.009016
Popis:	The paper presents an option to improve the method for water determination using a transformer oil moisture meter, which is widely used in power grid laboratories to monitor water in oil. It is found that the older the oil, the less convergence, and reproducibility of the water analysis results in oil obtained by two methods - coulometric titration with Karl Fischer reagent and electrochemical method with electrolysis of water on a sensitive element. It is shown how the sorption of the amount of water from the oil matrix is improved by transformer oil sample heating to 80 °C, which positively affects the metrological characteristics of the electrochemical method for determining water in liquid dielectrics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d19abb1278e5c0f51c6d02f83b142abc https://doi.org/10.1109/tdei.2020.009016 Zobrazit plný text záznamu