Performance evaluation of three optical particle counters with an efficient “multimodal” calibration method |
| |
| Authors: | Michael Heim Benjamin J. Mullins Heinz Umhauer Gerhard Kasper |
| |
| Affiliation: | aInstitut für Mechanische Verfahrenstechnik und Mechanik, Gas-Partikel-Systeme, Universität Karlsruhe (TH), D-76128 Karlsruhe, Germany;bCentre of Excellence in Cleaner Production, Curtin University of Technology, GPO Box U1987, Perth WA 6845, Australia |
| |
| Abstract: | The sizing accuracies of two widely used yet hitherto unevaluated optical particle counters (OPCs—Grimm Model 1.109 and Palas Model WELAS 2100) as well as one high-resolution, non-commercial OPC were evaluated. The measured data were compared to scattering intensity calculations based on Mie theory. Additionally, the counting efficiency for all three counters was measured, as was the influence of coincidence effects for the OPC with the lowest (manufacturer specified) upper concentration limit.Beside the traditional polystyrene latex calibration, a little-known, very fast and precise “multimodal” calibration method was used, which is based on the simultaneous generation of up to eight sharp multiple-charge modes from polydisperse di-ethyl-hexyl-sebacate (DEHS) particles by electrical mobility classification. |
| |
| Keywords: | Optical particle counter (OPC) Calibration Counting efficiency Coincidence Differential mobility analyser (DMA) Condensation particle counter (CPC) |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
