| Zugriffsnummer |
33357 |
| Dokumenttyp |
Zeitschriftenartikel
|
| Peer Review |
unbekannt |
| Sprache |
Englisch
|
| Titel |
EURAMET.QM-S7 : comparison measurement of electrolytic conductivity at pure water level |
| Autor(in); Institution |
Seitz, Steffen; 3.4, Physikalische Chemie, PTB-Braunschweig
|
| Quelle/Jahr |
Metrologia: 52
(2015), 1A, Tech. Suppl., 12 S.
|
| Artikelnummer |
08002 |
| Availability |
[online only] |
| ISSN |
0026-1394
|
| DOI |
|
| Verlag |
Bristol: IOP
|
| Zusammenfassung |
SUPPLEMENTARY COMPARISON
In this comparison the equivalence of conductivity measurement results has been investigated in the conductivity range from ultrapure water level (5.5 μS m-1) up to 1500 μS m-1). The measurements were performed in a closed pure water loop with primary methods and with commercial devices. To this end the conductivity measurement cells of the participating institutes were integrated in series with the primary cell of PTB, which in this way linked the results. In general the primary methods of PTB and DFM are consistent within an expanded uncertainty of 0.5 %. A slight inconsistency at the ultrapure water level resulted from a small leakage during that measurement. SP, using a commercial device, measured consistent values. CMI, also using a commercial device, underestimated its measurement uncertainty.
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 CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA). |
