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Flow rate-independent electrical aerosol sensor

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Original languageEnglish
Pages (from-to)1283-1292
JournalAerosol Science and Technology
Issue number11
Early online date2018
Publication statusPublished - 2018
Publication typeA1 Journal article-refereed


A new diffusion charging-based aerosol instrument design is presented, intended to be a starting point for a low-cost particle concentration sensor. The aim in the design is to minimize instrument response dependence on the sample flow rate. The operation principle, response functions of the components, and performance of a prototype instrument are reported. Based on the performance evaluation, the instrument response remained constant within ±15% over a wide sample flow rate range of 3 to 10 lpm. While in the design some sensitivity is sacrificed to minimize flow rate dependency, the detection limit is still sufficient for a practical sensor application.


  • Jingkun Jiang

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Field of science, Statistics Finland

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