Extensive evaluation and classification of low-cost dust sensors in laboratory using a newly developed test method.

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2019
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Abstract
An extensive evaluation of low-cost dust sensors was performed using an exponentially decaying particle concentration. Total of 264 sensors including 27 sensors with light-emitting diodes (LEDs) and 237 sensors with laser lighting sources were tested. Those tested sensors were classified into 4 groups based on the deviation from the reference data obtained by a reference instrument. The response linearities of all the tested samples for PM , PM , and PM were in excellent agreement with the reference instrument, except a few samples. For the measurements of PM and PM , the lighting source, i.e., LED or laser, did not show any significant difference in overall sensor performance. However, LED-based sensors did not perform well for PM measurements. The 32, 24 and 16% of all the tested sensors for PM , PM and PM measurement, respectively, are in the category of Class 1 (reference instrument reading ±20%) requirement. The performance of the low-cost dust sensors for PM measurement was relatively less satisfactory.
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ahn2019extensiveindoor Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ahn, Kang-Ho;Lee, Handol;Lee, Hae Dong;Kim, Sang Chul;
Journal indoor air
Year 2019
DOI
10.1111/ina.12615
URL
Keywords
embedded type sensor exponentially decaying particle concentration lighting source low-cost dust sensor module type sensor standalone type sensor

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