PN-Calibration Issues

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Presentation transcript:

PN-Calibration Issues Herzlich willkommen! Guten Tag L +G My name is Stefan Carli I am a specialist for PN measurements and calibration working for EAPF my presentation is focusing on the PN PEMS measurement procedure PN-Calibration Issues 12.10.2016

JRC Inter-Laboratory Comparison Exercise 18.02.2014 JRC Inter-Laboratory Comparison Exercise 12.10.2016

JRC Inter-Laboratory Comparison Exercise 18.02.2014 JRC Inter-Laboratory Comparison Exercise 12.10.2016

JRC Inter-Laboratory Comparison Exercise Unexpected huge difference between certified Labs during ILCE Reason for differences must be examined: PN calibration issue? Set up influences? Accuracy requirements? 12.10.2016

Equivalency of calibration approach? 12.10.2016

Equivalency of calibration approach? 12.10.2016

Equivalency of calibration approach? 12.10.2016

Equivalency of calibration approach? 12.10.2016

Equivalency of calibration approach? State of the art calibration to be evaluated PN calibration traceability chain? Maximum possible error Potential improvements? Recommendations for best practice necessary! 12.10.2016

Backup 12.10.2016

JRC Inter-Laboratory Comparison Exercise 18.02.2014 JRC Inter-Laboratory Comparison Exercise Particle detector 22.09.2016

ILCE instrumentation set up PMP-Tailpipe Chassis dyno PN-PEMS 2 Raw exhaust EFM Gas PEMS PN-PEMS 1 Dilution tunnel (CVS) Dilution air PMP-CVS Verdampfungs - - tunnel CPC CPC PND 2 PND 2 PND 1 PND 1 VPR VPR