| Zugriffsnummer | 13009 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Noise thermometry above 960 °C |
| Autor(in); Institution |
Edler, Frank; 7.31, Thermometrie, PTB-Berlin
Kühne, Michael; 7.3, Temperatur und Wärme, PTB-Berlin
Tegeler, Erich; 7.31, Thermometrie, PTB-Berlin
|
| Quelle/Jahr | TEMPMEKO 1999, 7th International Symposium on Temperature and Thermal Measurements in Industry and Science: Proceedings: 2 (1999), 394 - 399 |
| Herausgeber(in) |
Dubbeldam, Jaco. F.; NMi Van Swinden Laboratorium, Delft, The Netherlands
|
| ISBN | 90-9013359-3 |
| Verlag | Delft: The Netherlands by Edauw & Johannissen |
| Konferenzangaben | TEMPMEKO '99, 7th International Symposium on Temperature and Thermal Measurements in Industry and Science, Delft, 1-3, June, 1999, The Netherlands |
| Zusammenfassung | The melting point palladium is an important fixed point widely used for the calibration of noble metal thermocouples. The working group 2 of the Comite Consultatif de Thermometrie (CCT) provided a value of 1554,8 °C +/- 0,1 °C [1] for this fixed point in an argon atmosphere based on radiation thermometry. For the verification of this value by a second thermodynamic method noise temperature measurements were performed at PTB. To avoid the need to measure absolute noise voltages and to minimise non-linearity effects of electronic components, a thermometer based on noise comparison was used. In addition the parasitic noise from the amplifiers and the connection leads was eliminated by cross correlation using a two channel arrangement of parallel amplifiers. The noise temperature measurements by using a miniature fixed point resulted in a value of 1552,95 °C +/- 0,27 °C (k = 2) for the melting point of palladium in air. |
