| Zugriffsnummer | 29348 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | EUROMET.EM-S24: Supplementary comparison of small current sources ; [EUROMET project 830, report] |
| Autor(in); Institution |
Willenberg, Gerd-Dietmar; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
|
| Quelle/Jahr | Metrologia: 50 (2013), Tech. Suppl., 124 S. |
| Artikelnummer | 01002 |
| Availability | [online only] |
| ISSN | 0026-1394 |
| DOI | |
| URL | |
| Verlag | Bristol: IOP Publishing |
| Zusammenfassung | For the first time, a EUROMET comparison was performed in the field of small DC currents below 1 nA. The capabilities of thirteen European and non-European NMIs for traceable calibrations of picoammeters have been compared. For that purpose, two different commercial picoammeters were used as travelling instruments. They were calibrated at current values of ±100 fA, ±1 pA, ±10 pA and ±100 pA. The accuracy achieved was to a large extent limited by the stability of the travelling instruments. The expanded relative uncertainty (k=2) of the reference values varied between 2.7·10-4 and 1.9·10-5, depending on the current ranges and the travelling instruments. There was a good agreement between the results of most of the participants. |
