Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities

The sensitivity of two commercial metal oxide (MOx) sensors to ethylene is tested at different relative humidities. One sensor (MiCS-5914) is based on tungsten oxide, the other (MQ-3) on tin oxide. Both sensors were found to be sensitive to ethylene concentrations down to 10 ppm. Both sensors have s...

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Autores principales: Krivec, Matic, Mc Gunnigle, Gerald, Abram, Anže, Maier, Dieter, Waldner, Roland, Gostner, Johanna M., Überall, Florian, Leitner, Raimund
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4701270/
https://www.ncbi.nlm.nih.gov/pubmed/26561812
http://dx.doi.org/10.3390/s151128088
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author Krivec, Matic
Mc Gunnigle, Gerald
Abram, Anže
Maier, Dieter
Waldner, Roland
Gostner, Johanna M.
Überall, Florian
Leitner, Raimund
author_facet Krivec, Matic
Mc Gunnigle, Gerald
Abram, Anže
Maier, Dieter
Waldner, Roland
Gostner, Johanna M.
Überall, Florian
Leitner, Raimund
author_sort Krivec, Matic
collection PubMed
description The sensitivity of two commercial metal oxide (MOx) sensors to ethylene is tested at different relative humidities. One sensor (MiCS-5914) is based on tungsten oxide, the other (MQ-3) on tin oxide. Both sensors were found to be sensitive to ethylene concentrations down to 10 ppm. Both sensors have significant response times; however, the tungsten sensor is the faster one. Sensor models are developed that predict the concentration of ethylene given the sensor output and the relative humidity. The MQ-3 sensor model achieves an accuracy of ±9.2 ppm and the MiCS-5914 sensor model predicts concentration to ±7.0 ppm. Both sensors are more accurate for concentrations below 50 ppm, achieving ±6.7 ppm (MQ-3) and 5.7 ppm (MiCS-5914).
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spelling pubmed-47012702016-01-19 Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities Krivec, Matic Mc Gunnigle, Gerald Abram, Anže Maier, Dieter Waldner, Roland Gostner, Johanna M. Überall, Florian Leitner, Raimund Sensors (Basel) Article The sensitivity of two commercial metal oxide (MOx) sensors to ethylene is tested at different relative humidities. One sensor (MiCS-5914) is based on tungsten oxide, the other (MQ-3) on tin oxide. Both sensors were found to be sensitive to ethylene concentrations down to 10 ppm. Both sensors have significant response times; however, the tungsten sensor is the faster one. Sensor models are developed that predict the concentration of ethylene given the sensor output and the relative humidity. The MQ-3 sensor model achieves an accuracy of ±9.2 ppm and the MiCS-5914 sensor model predicts concentration to ±7.0 ppm. Both sensors are more accurate for concentrations below 50 ppm, achieving ±6.7 ppm (MQ-3) and 5.7 ppm (MiCS-5914). MDPI 2015-11-06 /pmc/articles/PMC4701270/ /pubmed/26561812 http://dx.doi.org/10.3390/s151128088 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Krivec, Matic
Mc Gunnigle, Gerald
Abram, Anže
Maier, Dieter
Waldner, Roland
Gostner, Johanna M.
Überall, Florian
Leitner, Raimund
Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities
title Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities
title_full Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities
title_fullStr Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities
title_full_unstemmed Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities
title_short Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities
title_sort quantitative ethylene measurements with mox chemiresistive sensors at different relative air humidities
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4701270/
https://www.ncbi.nlm.nih.gov/pubmed/26561812
http://dx.doi.org/10.3390/s151128088
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