Coaxial Probe for Dielectric Measurements of Aerated Pulverized Materials

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

Knowledge about the dielectric properties of materials, i.e., the relative permittivity and the conductivity, is important for various sensing applications and engineering. In pneumatic conveying systems, the dielectric properties of the transported good are affected by the transport gas, which aerates the pulverized material, effectively decreasing the permittivity. Traditional probe designs such as the open-ended coaxial probe are well suited for the dielectric characteristics of liquids, gels, and pulverized materials. However, to measure the dielectric properties for aerated materials, the probe has to provide measures to create an aerated state. In this paper, we present a probe design to measure the dielectric properties of aerated pulverized materials. The probe maintains a coaxial design with a dedicated gas injection, enabling the analysis of diluted materials. We discuss the design of the probe, show the modeling of the probe, and present suitable calibration techniques. Furthermore, we analyze the uncertainty of the probe design by means of a statistical analysis of the calibration approach.

Originalspracheenglisch
Aufsatznummer8680048
Seiten (von - bis)1402-1411
Seitenumfang10
FachzeitschriftIEEE transactions on instrumentation and measurement
Jahrgang68
Ausgabenummer5
Frühes Online-Datum2 Apr 2019
DOIs
PublikationsstatusVeröffentlicht - Mai 2019

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probes
Dielectric properties
dielectric properties
Permittivity
Calibration
permittivity
gas transport
gas injection
pneumatics
Conveying
statistical analysis
Pneumatics
Statistical methods
Gels
engineering
gels
conductivity
Liquids
liquids
Gases

Schlagwörter

    ASJC Scopus subject areas

    • !!Instrumentation
    • !!Electrical and Electronic Engineering

    Dies zitieren

    Coaxial Probe for Dielectric Measurements of Aerated Pulverized Materials. / Neumayer, Markus; Flatscher, Matthias; Bretterklieber, Thomas.

    in: IEEE transactions on instrumentation and measurement, Jahrgang 68, Nr. 5, 8680048, 05.2019, S. 1402-1411.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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