Year: 2018
Type: article
Abstract: Condensation particle counter (CPC) technology has continued to evolve, with the introduction of several new instruments over the last several years. An important aspect in the characterization of these instruments is the measurement of their time response. Yet there is no standardly accepted approach for this measurement. Here we evaluate different classically used methods for determining CPC time response, and present the potential pitfalls associated with these approaches. Further, we introduce a new simple definition for the term response time, ϵ, which is based on the first-order systems response, while providing a practical definition by corresponding to ∼95% change in concentration. We also present results for various commonly used CPCs, and for the Airmodus A11 nano Condensation Nucleus Counter (nCNC) system, the TSI 3777+3772 Nano Enhancer system, and Aerosol Dynamics Inc.'s (ADI) new versatile water condensation particle counter.Copyright © 2018 American Association for Aerosol Research
Source: Aerosol Science and Technology
Institutions: University of Helsinki, Aerosol Dynamics (United States), Centre National de la Recherche Scientifique, Université Clermont Auvergne, Observatoire de Physique du Globe de Clermont-Ferrand, Laboratoire de Météorologie Physique, Université Paris-Est Créteil, Laboratoire Interuniversitaire des Systèmes Atmosphériques
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
Funder: Maj ja Tor Nesslingin Säätiö
Awards: G8026337140, G8448330932
OpenAlex ID: W2796420480