Effect of Relative Humidity and Air Temperature on the Results Obtained from Low-Cost Gas Sensors for Ambient Air Quality Measurements

Autores

Identificador

1162706

Fecha de publicación

2020

Forma obra

Texto

Lugar de producción

Open Access Journal: Sensors, 2020

Nota de edición

Digitalización realizada por la Biblioteca Virtual del Banco de la República (Colombia)

Materias

Tecnología; Tecnología / Ingeniería y operaciones afines
Low-cost sensors; Gas sensors; Air quality sensors; Electrochemical low-cost sensors; Air pollutants; Air quality monitoring

Notas

Colombia
Colfuturo
Abstract: Using low-cost gas sensors for air quality monitoring promises cost e ective and convenient measurement systems. Nevertheless, the results obtained have a questionable quality due to di erent factors that can a ect sensor performance. The most discussed ones are relative humidity and air temperature. This investigation aimed to assess the behavior of B4-series low-cost gas sensors from Alphasense for measuring CO, NO, NO2, and O3 for di erent levels of relative humidity and temperature. These low-cost gas sensors were tested for six relative humidity levels from 10% to 85% with increasing steps of 15% and four temperature levels of 10 C, 25 C, 35 C, and 45 C against reference instruments in the laboratory. The e ect of these parameters on low-cost gas sensors was quantified in laboratory from which a correction algorithm was calculated, which was then applied to the field data. The applied algorithm improved the data quality of the low-cost gas sensors in most of the cases. Additionally, a low-cost dryer was assessed to reduce the influence of these factors on the low-cost gas sensors, which also proved to be suitable to enhance the data quality.

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@Book{BVMC:1162706, author = {Samad, Abdul; Obando Núñez, Daniel Ricardo; Solís Castillo, Grecia Carolina; Laquai, Bernd; Vogt, Ulrich}, title = {Effect of Relative Humidity and Air Temperature on the Results Obtained from Low-Cost Gas Sensors for Ambient Air Quality Measurements}, url = {https://www.cervantesvirtual.com/obra/effect-of-relative-humidity-and-air-temperature-on-the-results-obtained-from-low-cost-gas-sensors-for-ambient-air-quality-measurements-1162706} }