Evaluating Low-Cost Commercially Available Sensors for Air Quality Monitoring and Application of Sensor Calibration Methods for Improving Accuracy
Open Access
- 1 January 2021
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Open Journal of Air Pollution
- Vol. 10 (01), 1-17
- https://doi.org/10.4236/ojap.2021.101001
Abstract
In this paper, we present the results of the evaluation of three low-cost laser sensors and comparison with the standard device Metone Aerocet 531s which is capable of counting dust particles as small as 0.3 μm. The sensors used in this study are PMS5003 (Plantower), SPS30 (Sesirion), SM-UART-04L (Amphenol). During the measurement, the overall trend of the outputs from the sensors was similar to that of the Aerocet 531s. The PMS5003 sensor has a relatively small standard error in the all particle measurement ranges (3 in the low particle concentration range). All sensors have a high linearity compared to data from standard equipment, PMS5003: PM1.0 R2 = 0.89; PM2.5 R2 = 0.95; PM10 R2 = 0.87; SPS30 PM2.5 R2 = 0.95 and PM10 R2 = 0.99; SM-UART-04L PM1.0 R2 = 0.98. Three main sensor calibration methods (single-point calibration, two-point calibration and multi-point curve correction) with implementation steps for each method as well as their practical applications in calibrating low-cost air quality sensors according to standard measuring equipment are also detailed illustrated.Keywords
This publication has 12 references indexed in Scilit:
- Air Pollution and Chronic Obstructive Pulmonary Disease Exacerbations: When Prevention Becomes FeasibleAmerican Journal of Respiratory and Critical Care Medicine, 2019
- Applications of low-cost sensing technologies for air quality monitoring and exposure assessment: How far have they gone?Environment International, 2018
- Effects of Outdoor Air Pollution on Human HealthPublished by Elsevier BV ,2018
- Validate personal air-pollution sensorsNature, 2016
- An Overview of Particulate Matter Measurement InstrumentsAtmosphere, 2015
- Air pollution and public health: emerging hazards and improved understanding of riskEnvironmental Geochemistry and Health, 2015
- Measurement of Airborne ParticlesPublished by Wiley ,2003
- Comparison of Real-Time Instruments Used To Monitor Airborne Particulate MatterJournal of the Air & Waste Management Association, 2001
- Federal Reference and Equivalent Methods for Measuring Fine Particulate MatterAerosol Science and Technology, 2001
- Field Performance of PM2.5Federal Reference Method SamplersAerosol Science and Technology, 2001