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...
| Main Authors: | , , , , |
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| Format: | Article |
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Chinese Academy of Agricultural Engineering
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34883/ |
| _version_ | 1848847898034307072 |
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| author | Yahaya, Nor Zakiah Abbas, Zulkifly Mohamad Ibrahim, Nursakinah Muhammad Hafizi, Mardiah Hafizah Yahaya, Muhamad Zamri |
| author_facet | Yahaya, Nor Zakiah Abbas, Zulkifly Mohamad Ibrahim, Nursakinah Muhammad Hafizi, Mardiah Hafizah Yahaya, Muhamad Zamri |
| author_sort | Yahaya, Nor Zakiah |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T09:25:55Z |
| format | Article |
| id | upm-34883 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T09:25:55Z |
| publishDate | 2014 |
| publisher | Chinese Academy of Agricultural Engineering |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| 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 |
| title | 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_short | Permittivity models for determination of moisture content in Hevea Rubber Latex |
| title_sort | permittivity models for determination of moisture content in hevea rubber latex |
| url | http://psasir.upm.edu.my/id/eprint/34883/ http://psasir.upm.edu.my/id/eprint/34883/ http://psasir.upm.edu.my/id/eprint/34883/ |