| Zugriffsnummer | 28531 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | International comparison of torque standards in the range of 0.5 to 20 kN·m between PTB and NMIJ |
| Autor(in); Institution |
Ohgushi, Koji; NMIJ, JAPAN
Ota, Takashi; NMIJ, JAPAN
Ueda, Kazunaga; NMIJ, JAPAN
Peschel, Diedert; PTB-Braunschweig, retired staff
Röske, Dirk; 1.2, Festkörpermechanik, PTB-Braunschweig
Tambach, Hans-Jürgen; PTB-Braunschweig, retired staff
Mauersberger, Dietmar; 1.2, Festkörpermechanik, PTB-Braunschweig
|
| Quelle/Jahr | AIST Bulletin of Metrology: 6 (2007), 3, 133 - 139 |
| ISSN | 1347-1473 |
| URL | |
| Verlag | Tsukuba: National Metrology Institute of Japan |
| Freie Schlagworte | Torque standard machine ; Bilateral comparison ; Transfer standard ; Bridge calibrator |
| Zusammenfassung | An international comparison of torque standards was conducted between the National Metrology Institute of Japan (NMIJ) in the National Institute of Advanced Industrial Science and Technology (AIST) and the Physikalisch-Technische Bundesanstalt (PTB) in the range of 500 N·m to 20 kN·m. These are the only two National Metrology Institutes (NMIs) that can attain the national torque standard using deadweight machines in the relatively high rated capacity of 20 kN·m. Two high-performance torque transducers measuring "pure torque" and one bridge calibrator were used as transfer devices. Two identical amplifier/indicators, one at each laboratory, were used for the comparison. Two transducers, with rated capacities of 5 kN·m and 20 kN·m, were transferred from the PTB to the NMIJ. The relative deviations of the calibration results were less than 8.3·10-5 for increasing torque, and were less than 8.9·10-5 for decreasing torque. Sufficiently small deviations relative to the Calibration and Measurement Capabilities (7.0·10-5 in the NMIJ, whereas 2.0·10-5 in the PTB, as relative expanded uncertainties) were obtained, so the equivalence of the torque standards between the NMIJ and the PTB were confirmed. |
