Investigation of Sensing Characteristics for the Detection of Formaldehyde Using a Multichannel Data Acquisition System and Semiconductor Metal Oxide Sensor

A multichannel data acquisition setup was designed and developed uniquely for detection of low concentration of formaldehyde using semiconductor metal oxide sensor. The selectivity towards formaldehyde was achieved by choosing optimized temperature of sensor operation. The gas sensing studies proved...

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Veröffentlicht in:	Sensing and imaging 2022-12, Vol.23 (1), Article 28
Hauptverfasser:	Keshari, Ajay Kumar, Rao, J. Prabhakar, Murthy, A. Sree Rama, Jayaraman, V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Data acquisition Electrical Engineering Engineering Formaldehyde Gas sensors Imaging Metal oxides Microwaves Original Paper Radiology RF and Optical Engineering Selectivity
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Beschreibung
Zusammenfassung:	A multichannel data acquisition setup was designed and developed uniquely for detection of low concentration of formaldehyde using semiconductor metal oxide sensor. The selectivity towards formaldehyde was achieved by choosing optimized temperature of sensor operation. The gas sensing studies proved useful for sensing formaldehyde in the concentration range of 20–100 ppm. The mean and standard deviation of baseline stability of sensor were 14.8 kΩ and 0.21 kΩ respectively.
ISSN:	1557-2064 1557-2072
DOI:	10.1007/s11220-022-00397-z