Particle and Aerosol Research Vol. 10, No. 4, December 2014 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Development and Performance Evaluation of PN-PEMS
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Abstracts
Abstract
Particle number portable emission measurement system (PN-PEMS) is an instrument for measuring number
concentration of automobile exhaust. The principle of some pre-existing commercial PN-PEMS is to charge particles
and display the number of particles by measuring current. However, this method has some problems for measuring
exhaust. In this study, to solve these issues, we have developed a single particle counting PN-PEMS based
condensation particle counter (CPC). The PN-PEMS based CPC does not affect driving conditions and it is convenient
for mobile because the instrument is small and light in structure. We evaluated counting efficiency of PN-PEMS based
CPC by using electrostatic method (electrometer and Faraday cup).
Keywords£ºPN-PEMS, CPC, Electrometer, Faraday Cup, Counting Efficiency
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