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Permittivity models for determination of moisture content in Hevea Rubber Latex

The commercial open-ended coaxial probe (Agilent 85070E) is the most commonly used sensor to determine the permittivity of wet materials. This paper extends the usability and applicability of the sensor to the estimation of moisture content in Hevea Rubber Latex. The dielectric constant and loss fac...

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Main Authors: Yahaya, Nor Zakiah, Abbas, Zulkifly, Mohamad Ibrahim, Nursakinah, Muhammad Hafizi, Mardiah Hafizah, Yahaya, Muhamad Zamri
Format: Article
Published: Chinese Academy of Agricultural Engineering 2014
Online Access:http://psasir.upm.edu.my/id/eprint/34883/
https://ijabe.org/index.php/ijabe/article/view/929
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spelling my.upm.eprints.348832019-06-28T01:09:50Z http://psasir.upm.edu.my/id/eprint/34883/ Permittivity models for determination of moisture content in Hevea Rubber Latex Yahaya, Nor Zakiah Abbas, Zulkifly Mohamad Ibrahim, Nursakinah Muhammad Hafizi, Mardiah Hafizah Yahaya, Muhamad Zamri The commercial open-ended coaxial probe (Agilent 85070E) is the most commonly used sensor to determine the permittivity of wet materials. This paper extends the usability and applicability of the sensor to the estimation of moisture content in Hevea Rubber Latex. The dielectric constant and loss factor were measured using the commercial probe whilst the moisture contents were obtained using the standard oven drying method. Comparison results were obtained between the different dielectric models to predict moisture content in latex. Both the dielectric constant and the loss factor of rubber latex linearly increased with moisture content at all selected frequencies. Calibration equations were established to relate both the dielectric constant and the loss factor with moisture content. These equations were used to predict moisture content in Hevea latex from measured values of the dielectric constant and the loss factor. The lowest mean relative error between actual and predicted moisture contents was 0.02 at 1 GHz when using the Cole-Cole dielectric constant calibration equation. Chinese Academy of Agricultural Engineering 2014-10 Article PeerReviewed Yahaya, Nor Zakiah and Abbas, Zulkifly and Mohamad Ibrahim, Nursakinah and Muhammad Hafizi, Mardiah Hafizah and Yahaya, Muhamad Zamri (2014) Permittivity models for determination of moisture content in Hevea Rubber Latex. International Journal of Agricultural and Biological Engineering, 7 (5). 48-54 . ISSN 1934-6344; ESSN: 1934-6352 https://ijabe.org/index.php/ijabe/article/view/929 10.3965/j.ijabe.20140705.005
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description The commercial open-ended coaxial probe (Agilent 85070E) is the most commonly used sensor to determine the permittivity of wet materials. This paper extends the usability and applicability of the sensor to the estimation of moisture content in Hevea Rubber Latex. The dielectric constant and loss factor were measured using the commercial probe whilst the moisture contents were obtained using the standard oven drying method. Comparison results were obtained between the different dielectric models to predict moisture content in latex. Both the dielectric constant and the loss factor of rubber latex linearly increased with moisture content at all selected frequencies. Calibration equations were established to relate both the dielectric constant and the loss factor with moisture content. These equations were used to predict moisture content in Hevea latex from measured values of the dielectric constant and the loss factor. The lowest mean relative error between actual and predicted moisture contents was 0.02 at 1 GHz when using the Cole-Cole dielectric constant calibration equation.
format Article
author Yahaya, Nor Zakiah
Abbas, Zulkifly
Mohamad Ibrahim, Nursakinah
Muhammad Hafizi, Mardiah Hafizah
Yahaya, Muhamad Zamri
spellingShingle Yahaya, Nor Zakiah
Abbas, Zulkifly
Mohamad Ibrahim, Nursakinah
Muhammad Hafizi, Mardiah Hafizah
Yahaya, Muhamad Zamri
Permittivity models for determination of moisture content in Hevea Rubber Latex
author_facet Yahaya, Nor Zakiah
Abbas, Zulkifly
Mohamad Ibrahim, Nursakinah
Muhammad Hafizi, Mardiah Hafizah
Yahaya, Muhamad Zamri
author_sort Yahaya, Nor Zakiah
title Permittivity models for determination of moisture content in Hevea Rubber Latex
title_short Permittivity models for determination of moisture content in Hevea Rubber Latex
title_full Permittivity models for determination of moisture content in Hevea Rubber Latex
title_fullStr Permittivity models for determination of moisture content in Hevea Rubber Latex
title_full_unstemmed Permittivity models for determination of moisture content in Hevea Rubber Latex
title_sort permittivity models for determination of moisture content in hevea rubber latex
publisher Chinese Academy of Agricultural Engineering
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/34883/
https://ijabe.org/index.php/ijabe/article/view/929
_version_ 1643831287678500864
score 13.211869

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