A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

A gas diluter based on critical orifices was built and evaluated. The gas diluter is capable of creating dilution ratios of 1:1400 at a total flow of 6.5 L/min. An extended uncertainty analysis of gas concentrations and dilution ratios according to the Guide to the Expression of Uncertainty in Measurement was conducted. A gas cylinder of 5.16 ppm NO2 with a relative uncertainty of 1.5% (k = 1) can be diluted down to a concentration of 3.69 ppb NO2 (dilution ratio of 1:1400) at an uncertainty of 1.9% (k = 1). The results are in good agreement with reference NO2 measurements, conducted with a chemiluminescence detector (CLD, European reference method EN14211; 2005).
Original languageEnglish
Title of host publicationA Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations
Pages1-4
Volume2
Edition13
DOIs
Publication statusPublished - 7 Dec 2018

Publication series

NameProceedings
PublisherMDPI AG
ISSN (Print)2504-3900

Fingerprint

critical flow
dilution
gas
uncertainty analysis

Keywords

  • gas diluter
  • metrology
  • nitrogen dioxide

Cite this

Breitegger, P., & Bergmann, A. (2018). A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. In A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations (13 ed., Vol. 2, pp. 1-4). (Proceedings). https://doi.org/10.3390/PROCEEDINGS2130998

A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. / Breitegger, Philipp; Bergmann, Alexander.

A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. Vol. 2 13. ed. 2018. p. 1-4 (Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Breitegger, P & Bergmann, A 2018, A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. in A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. 13 edn, vol. 2, Proceedings, pp. 1-4. https://doi.org/10.3390/PROCEEDINGS2130998
Breitegger P, Bergmann A. A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. In A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. 13 ed. Vol. 2. 2018. p. 1-4. (Proceedings). https://doi.org/10.3390/PROCEEDINGS2130998
Breitegger, Philipp ; Bergmann, Alexander. / A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations. Vol. 2 13. ed. 2018. pp. 1-4 (Proceedings).
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