| Zugriffsnummer | 22708 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Sprache | Englisch |
| Titel | Camera based investigation of high-temperature fixed-points for radiometric application |
| Autor(in); Institution |
Anhalt, Klaus; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
Lindner, Detlef; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
Krüger, U.; Technoteam GmbH, Ilmenau, GERMANY
Schmidt, F.; Technoteam GmbH, Ilmenau, GERMANY
Hartmann, Jürgen; 7.3, Detektorradiometrie und Strahlungsthermometrie, PTB-Berlin
|
| Quelle/Jahr | Metrologia: 46 (2009), 4, S260 - S265 |
| ISSN | 0026-1394 (PRINT) ; 1681-7575 (ONLINE) |
| DOI | |
| Konferenzangaben | NEWRAD 2008, 10th International Conference on New Developments and Applications in Optical Radiometry, Daejeon, 13-16, October, 2008, Korea |
| Zusammenfassung | A radiance camera was used to investigate the radiation field emitted by high-temperature black-bodies and fixed-point cavities up to temperatures of 3000 K. In a first steep the cameras applicability to measure the spectral radiance at such high-temperatures was invstigated. In a second step the radiation characteristics of several sources were studied using the camera system, in particular large area fixed-point blackbodies of Cu, Pt-C and ZrC-C. Especially for the ZrC-C fixed-points the radiation field at the cavity opening was found to be non-uniform. This observation explains systematic differences in the plateau shape of large aperture eutectic-fixed-point cells for radiometers with different field-of-view. Using the two dimensional radiance distribution measured with the camera system the deviation of the temperatures measured with interference filter radiometers and radiation thermometers was studied. |
