An Intrinsically Pressure Insensitive Low Cost Particle Number Diluter Featuring Flow Monitoring

Markus Bainschab, Alexander Bergmann

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a low cost Particle Number (PN) diluter including mass flow monitoring. The
device consists of a commercial hypodermic needle, a High Efficiency Particulate Air (HEPA) filter.
and a custom‐made flow sensor. The flow sensor is used to monitor the diluter’s performance and
enable in‐time replacement of the low cost elements used. Neither the sampling flow rate nor the
pressure drop drastically change the dilution factor introduced by the presented device. This makes
the presented device especially useful for particle number measurements at positions close to the
tailpipe of internal combustion engine powered vehicles, where aggravating, fast pressure
pulsations complicate correct sampling.
Original languageEnglish
Title of host publicationAn Intrinsically Pressure Insensitive Low Cost Particle Number Diluter Featuring Flow Monitoring
Number of pages6
Publication statusPublished - 10 Dec 2018
EventEurosensors 2018 - Karl Franzens Universität Graz, Graz, Austria
Duration: 9 Sep 201812 Sep 2018
https://www.eurosensors2018.eu

Conference

ConferenceEurosensors 2018
CountryAustria
CityGraz
Period9/09/1812/09/18
Internet address

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  • Cite this

    Bainschab, M., & Bergmann, A. (2018). An Intrinsically Pressure Insensitive Low Cost Particle Number Diluter Featuring Flow Monitoring. In An Intrinsically Pressure Insensitive Low Cost Particle Number Diluter Featuring Flow Monitoring [981]