A system for traceable measurement of the microwave complex permittivity of liquids at high pressures and temperatures

被引：16

作者：

Dimitrakis, G. A. ^{[1
]}

George, M. ^{[2
]}

Poliakoff, M. ^{[2
]}

Harrison, I. ^{[3
]}

Robinson, J. ^{[1
]}

Kingman, S. ^{[1
]}

Lester, E. ^{[1
]}

Gregory, A. P. ^{[4
]}

Lees, K.

机构：

[1] Univ Nottingham, Dept Chem & Environm Engn, Nottingham NG7 2RD, England

[2] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England

[3] Univ Nottingham, Dept Elect & Elect Engn, Nottingham NG7 2RD, England

[4] Natl Phys Lab, Ind & Innovat Div, Teddington TW11 0LW, Middx, England

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2009年 / 20卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

dielectric liquids; dielectric properties measurements; microwave measurement; permittivity measurement; STATIC DIELECTRIC-CONSTANT; METHANOL-MIXTURES; CARBON-DIOXIDE; BEHAVIOR; WATER;

D O I：

10.1088/0957-0233/20/4/045901

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A system has been developed for direct traceable dielectric measurements on liquids at high pressures and temperatures. The system consists of a coaxial reflectometric sensor terminated by a metallic cylindrical cell to contain the liquid. It has been designed for measurements on supercritical liquids, but as a first step measurements on dielectric reference liquids were performed. This paper reports on a full evaluation of the system up to 2.5 GHz using methanol, ethanol and n-propanol at pressures up to 9 MPa and temperatures up to 273 degrees C. A comprehensive approach to the evaluation of uncertainties using Monte Carlo modelling is used.

引用

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