Quantitative Ethylene Measurements with MOx Chemiresistive Sensors at Different Relative Air Humidities.
Sensors (Basel)
; 15(11): 28088-98, 2015 Nov 06.
Article
en En
| MEDLINE
| ID: mdl-26561812
ABSTRACT
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).
Palabras clave
Texto completo:
1
Colección:
01-internacional
Asunto principal:
Óxidos
/
Tungsteno
/
Técnicas de Química Analítica
/
Compuestos de Estaño
/
Etilenos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Sensors (Basel)
Año:
2015
Tipo del documento:
Article
País de afiliación:
Austria