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Electromagnetic sensors for water content: the need for international testing standards

Jones, Scott B.; Sheng, Wenyi; Xu, Jinghui; Robinson, David A.. 2018 Electromagnetic sensors for water content: the need for international testing standards. In: Skierucha, Wojciech, (ed.) 2018 12th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA), Lublin, Poland, 4-7 June 2018. New York, Institute of Electrical and Electronics Engineers, 3pp.

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Abstract/Summary

The growing number of new electromagnetic-based water content sensors across the globe is creating a market filled with confusing choices for consumers and decreasing market share for producers. Without informed consumer choices, product price point may be controlled more by advertising advantage than by product performance and quality. Sensor performance and quality assessments have been carried out over decades with mixed testing approaches and a commensurate measure of mixed results. Confusion over sensor-function, - failure and value grows as testing employs moving targets such as locally-available non-standard, non-homogenous materials that are unavailable globally, thereby adding to the confusion. In addition to environmental impacts on sensor circuit performance, there are secondary effects arising from the material under test including, temperature and electrical conductivity, interfacial polarization and dielectric relaxation to mention a few. In order to develop an international electromagnetic (EM) sensor testing methodology, a body of engaged experts is needed to address two key issues, 1) sensor performance evaluation and 2) material under test standardized definition and characterization. Industry and consumer buy-in is important as the implementation of standards will require agreement among producers and consumers that standards add value to sensors. Although a few attempts have been made to standardize testing, more work and research is required before an international standard can be adopted.

Item Type: Publication - Book Section
Digital Object Identifier (DOI): https://doi.org/10.1109/ISEMA.2018.8442316
CEH Sections/Science Areas: Soils and Land Use (Science Area 2017-)
ISBN: 9781538645918
Additional Keywords: electromagnetic sensors, water content sensing, testing standards
NORA Subject Terms: Hydrology
Agriculture and Soil Science
Date made live: 03 Apr 2019 11:17 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/522704

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