QUT ePrints

A simple and inexpensive dilution system for the TSI 3007 condensation particle counter

Knibbs, Luke D., de Dear, Richard J., Morawska, Lidia, & Coote, Peter M. (2007) A simple and inexpensive dilution system for the TSI 3007 condensation particle counter. Atmospheric Environment, 41(21), pp. 4553-4557.

View at publisher

Abstract

The aim of this study was to develop a dilution system which would permit the TSI 3007 Condensation Particle Counter (CPC) to operate within its maximum detectable concentration threshold, even when sampling extremely high submicron particle concentrations. The intention of this was to provide a better alternative to coincidence correction factors, which have several limitations; the most significant of which being that they are only applicable to a comparatively low concentration and also that the components of the unit are exposed to concentrations beyond their operating specifications. To achieve the aim, a bifurcation based system was developed and tested repeatedly at concentrations of unleaded petrol combustion particles up to ~8.5×106 p/cc. The benchmark particle concentration was measured by a TSI 3022A CPC. The results of the tests showed that the nominal dilution ratio based on flow partitioning was applicable up to ~3.5×105 p/cc, after which particle losses to a capillary tube caused a large increase in apparent dilution. These losses were consistent throughout all tests and allowed the unit to remain below the maximum detection threshold, even under the extreme challenge concentrations encountered. This work represents a useful extension of the operating range of the TSI 3007, without significantly compromising either the quality of data collected or the internal components of the unit.

Impact and interest:

7 citations in Scopus
Search Google Scholar™
7 citations in Web of Science®

Citation countsare sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

621 since deposited on 23 Jul 2007
112 in the past twelve months

Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 8752
Item Type: Journal Article
Keywords: TSI 3007, Condensation Particle Counter, Dilution, Submicron, Particle Measurement
DOI: 10.1016/j.atmosenv.2007.03.019
ISSN: 1352-2310
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900) > Physical Sciences not elsewhere classified (029999)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2007 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 23 Jul 2007
Last Modified: 29 Feb 2012 23:32

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page