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Laboratory Evaluation of the Effects of Particle Size and Composition on the Performance...

Title: Laboratory Evaluation of the Effects of Particle Size and Composition on the Performance of Integrated Devices Containing Plantower Particle Sensors Low-cost sensors have rapidly come to market over the past decade, and they represent a paradigm shift in accessibility to localized measurements of airborne particles. However, both laboratory and field evaluations have demonstrated that under various conditions, these sensors may have substantial inaccuracies. In this paper, we systematically evaluated low-cost devices containing a Plantower particle sensor to test how they responded to particles with varying size and composition. Our results suggest that the composition of the particles had an effect on the accuracy of the sensors’ reported particle concentrations, but the size of the particles had a larger effect. In this presentation, I complement our experimental results with some theoretical models to further understand these observations.