Sensors | |
Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities | |
Matic Krivec3  Gerald Mc Gunnigle3  Anže Abram2  Dieter Maier1  Roland Waldner1  Johanna M. Gostner4  Florian Überall4  Raimund Leitner3  | |
[1] Philips Consumer Lifestyle Klagenfurt, Koningsbergerstrasse 11, A–9020 Klagenfurt, Austria; E-Mails:;Department for Nanostructured Materials, Jožef Stefan Institute, Jamova 39, SI–1000 Ljubljana, Slovenia; E-Mail:;CTR Carinthian Tech Research AG, Europastrasse 12, A–9524 Villach, Austria; E-Mails:;Division of Medical Biochemistry, Medical University of Innsbruck, Center for Chemistry and Biomedicine, Innrain 80, A–6020 Innsbruck, Austria; E-Mails: | |
关键词: ethylene; relative humidity; chemiresistive sensor; linear regression model; | |
DOI : 10.3390/s151128088 | |
来源: mdpi | |
【 摘 要 】
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).
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
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RO202003190003881ZK.pdf | 1198KB | download |