Precision and Limits of Detection for Selected Commercially Available, Low-Cost Carbon Dioxide and Methane Gas Sensors
1
Department of Chemistry, Oklahoma State University, 107 Physical Sciences, Stillwater, OK 74078, USA
2
Department of Civil Engineering, Oklahoma State University, 319C Engineering South, Stillwater, OK 74078, USA
*
Author to whom correspondence should be addressed.
†
Current address: University of Oklahoma Biological Survey, 111 Chesapeake St., Norman, OK 73019, USA.
Sensors 2019, 19(14), 3157; https://doi.org/10.3390/s19143157
Received: 11 June 2019
/
Revised: 3 July 2019
/
Accepted: 15 July 2019
/
Published: 18 July 2019
(This article belongs to the Section Chemical Sensors)
The performance of a sensor platform for environmental or industrial monitoring is sensitive to the cost and performance of the individual sensor elements. Thus, the detection limits, accuracy, and precision of commercially available, low-cost carbon dioxide and methane gas concentration sensors were evaluated by precise measurements at known gas concentrations. Sensors were selected based on market availability, cost, power consumption, detection range, and accuracy. A specially constructed gas mixing chamber, coupled to a precision bench-top analyzer, was used to characterize each sensor during a controlled exposure to known gas concentrations. For environmental monitoring, the selected carbon dioxide sensors were characterized around 400 ppm. For methane, the sensor response was first monitored at 0 ppm, close to the typical environmental background. The selected sensors were then evaluated at gas concentrations of several thousand ppm. The determined detection limits accuracy, and precision provides a set of matrices that can be used to evaluate and select sensors for integration into a sensor platform for specific applications.
View Full-Text
Keywords:
sensor systems and applications; carbon dioxide; methane
▼
Show Figures
Graphical abstract
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
- Supplementary File 1:
PDF-Document (PDF, 100 KiB)
MDPI and ACS Style
Honeycutt, W.T.; Ley, M.T.; Materer, N.F. Precision and Limits of Detection for Selected Commercially Available, Low-Cost Carbon Dioxide and Methane Gas Sensors. Sensors 2019, 19, 3157. https://doi.org/10.3390/s19143157
AMA Style
Honeycutt WT, Ley MT, Materer NF. Precision and Limits of Detection for Selected Commercially Available, Low-Cost Carbon Dioxide and Methane Gas Sensors. Sensors. 2019; 19(14):3157. https://doi.org/10.3390/s19143157
Chicago/Turabian StyleHoneycutt, Wesley T., M. Tyler Ley, and Nicholas F. Materer. 2019. "Precision and Limits of Detection for Selected Commercially Available, Low-Cost Carbon Dioxide and Methane Gas Sensors" Sensors 19, no. 14: 3157. https://doi.org/10.3390/s19143157
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
