International comparison CCQM K23b: Natural gas type II

• Published in: Metrologia 2010-01, Vol.47, p.08013-08013
• Main Authors: van der Veen, Adriaan M H, Chander, Hima, Ziel, Paul R, de Leer, Ed W B, Smeulders, Damian, Besley, Laurie, Smarçao da Cunha, Valnei, Zhou, Zei, Qiao, Han, Heine, Hans-Joachim, Tichy, Jan, Lopez Esteban, Teresa, Kato, K, Nagyné Szilágyi, Zsófia, Kim, Jin Seog, Woo, Jin-Chun, Bae, Hyun-Gil, Pérez Castorena, Alejandro, Rangel Murillo, Francisco, Serrano Caballero, Victor M, Ramírez Nambo, Carlos, de Jesús Avila Salas, Manuel, Rakowska, Agata, Dias, Florbela, Konopelko, Leonid A, Popova, Tatjana A, Pankratov, V V, Kovrizhnih, M A, Kuzmina, T A, Efremova, O V, Kustikov, Yury A, Musil, Stanislav, Milton, Martin J T
• Format: Article
• Language: English
• Subjects: Alkanes; Carbon dioxide; Methane; Metrology; Natural gas; Recognition; Texts
• ISSN: 0026-1394
• DOI: 10.1088/0026-1394/47/1A/08013

At the highest metrological level, natural gas standards are commonly prepared gravimetrically as PSMs (Primary Standard Mixtures). This international key comparison is a repeat of CCQM-K1e-g. The mixtures concerned contain nitrogen, carbon dioxide and the alkanes up to butane. The only difference from CCQM-K1e-g is the addition of iso-butane to the list. The agreement of the results in this key comparison is very good. For all parameters, with a few exceptions, the results agree within 0.5% (or better) with the key comparison reference value. For methane, the results are generally within 0.1% (or better) of the KCRV. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).