| Zugriffsnummer | 20056 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Sprache | Englisch |
| Titel | A vacuum infrared standard radiation thermometer at the PTB [poster] |
| Autor(in); Institution |
Gutschwager, Berndt; 7.3, Hochtemperatur- und Vakuumphysik, PTB-Berlin
Hollandt, Jörg; 7.3, Hochtemperatur- und Vakuumphysik, PTB-Berlin
Jankowski, T.; Raytek GmbH, Berlin, GERMANY
Gärtner, R.; Raytek GmbH, Berlin, GERMANY
|
| Quelle/Jahr | International Journal of Thermophysics: 29 (2008), 1, 330 - 340 |
| ISSN | 0195-928X (PRINT) ; 1572-9567 (ONLINE) |
| DOI | |
| Verlag | Dordrecht: Springer |
| Konferenzangaben | Tempmeko 2007, Lake Louise, 21-25, May, 2007, Canada |
| Zusammenfassung | A thermal infrared radiation thermometer was jointly developed by the Physikalisch-Technische Bundesanstalt and the Raytek GmbH for temperature measurements from -150 °C to 170 °C under vacuum. The radiation thermometer is a purpose built instrument to be operated with the PTB reduced background infrared calibration facility[1,2]. The instrument is a stand-alone system with an air-tight housing which allows operation inside a vacuum chamber, attached to a vacuum chamber and on air. The radiation thermometer will serve to calibrate thermal radiation sources, i.e. blackbody radiators, for their radiation temperature by comparison with a variable temperature reference blackbody[3] inside the reduced background calibration facility. Furthermore, since it can be operated under vacuum and on air, the instrument also allows to compare the water- and ammonia-heat-pipe reference blackbodies of the PTB low-temperature calibration facility on air with the variable temperature blackbody under vacuum. Finally, on condition that a sufficient long-term stability is achieved, the instrument shall be used as a transfer radiation thermometer to carry and compare the temperature scale of PTB by means of radiation thermometry to remote sensing calibration facilities outside PTB. The mechanical, optical and electrical design of the instrument are reported. Results of investigations on the temperature resolution, size-of-source effect and the reference function are given. The comparison of the heat-pipe blackbodies on air and the variable temperature blackbody under vacuum with the vacuum radiation thermometer is presented. [1] J. Hollandt, B. Gutschwager, T. Jankowski, R. Gärtner, Radiation Thermometry under Vacuum at the PTB, in Proceedings TEMPERATUR 2006, eds. J. Hollandt and S. Rudtsch, pp 71-79, ISBN 3-9805741-7-2, 2006 [2] C. Monte, B. Gutschwager, S.P. Morozova, J. Hollandt, Radiation Thermometry and Emissivity Measurement under Vacuum at the PTB, submitted to TEMPMEKO 2007 [3] S.P. Morozova et al., Vacuum Variable Low Temperature Blackbody VLTBB 100, submitted to TEMPMEKO 2007 |
