TY - CHAP A1 - Hartmann, Jürgen A1 - Anhalt, Klaus A1 - Morkel, M. T1 - Emissivity of tungsten electrodes in discharge lamps at elevated temperatures T2 - Proceedings of NEWRAD Y1 - 2008 SP - 273 EP - 274 ER - TY - CHAP A1 - Hartmann, Jürgen A1 - Keawprasert, T. A1 - Anhalt, Klaus A1 - Taubert, Dieter Richard A1 - Abd ElMageed, A. A1 - Sperling, A. T1 - Absolute Calibration of Spectral Responsivity for a Radiation Thermomemeter T2 - Proceedings of NEWRAD Y1 - 2008 SP - 287 EP - 288 ER - TY - CHAP A1 - Hartmann, Jürgen A1 - Ojanen, M. A1 - Anhalt, Klaus A1 - Weckström, T. A1 - Kärhä, P. A1 - Heinonen, M. A1 - Ikonen, E. T1 - Comparison of the Radiation Temperature Scales between PTB and MIKES T2 - Proceedings of NEWRAD Y1 - 2008 SP - 285 EP - 286 ER - TY - CHAP A1 - Hartmann, Jürgen A1 - Anhalt, Klaus A1 - Schiller, S. A1 - Schreiber, Ekkehard T1 - Practical high-temperature furnace for the application in radiometry, photometry and thermometry T2 - Proceedings of NEWRAD Y1 - 2008 SP - 275 EP - 276 ER - TY - JOUR A1 - Hartmann, Jürgen A1 - Anhalt, Klaus A1 - Sperfeld, P. A1 - Sakharov, M. A1 - Khlevnoy, B. A1 - Ogarev, S. A1 - Sapritsky, V. T1 - Irradiance measurements of Re-C, TiC-C and ZrC-C fixed point blackbodies BT - Newrad 2005 N2 - Specially designed Re-C, TiC-C and ZrC-C fixed-point cells for irradiance measurements have been produced by VNIIOFI. In several investigations at VNIIOFI and PTB the usability of the design for irradiance measurements has been demonstrated. Current developments of furnace uniformity demonstrate further improvements to the systems. Y1 - 2005 UR - http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.627.3617&rep=rep1&type=pdf ER - TY - CHAP A1 - Hartmann, Jürgen A1 - Taubert, Dieter Richard A1 - Anhalt, Klaus A1 - Gutschwager, B. A1 - Monte, C. A1 - Hollandt, Jörg T1 - Radiation thermometry, thermodynamic temperature and emissivity measurements at the PTB BT - an overview N2 - To meet the increasing demand of calibrations in the field of radiation thermometry, the Physikalisch-Technische Bundesanstalt (PTB) operates two different setups for calibrations covering the temperature range from-60 C up to 3000 C. The first setup consists of several heat-pipe blackbodies in conjunction with platinum resistance thermometers, calibrated according to the International Temperature Scale of 1990 (ITS-90) and is applied for calibrations in the temperature range from-60 C to 961.78 C. In the temperature range from 962 C to 3000 C the calibration is based on high temperature blackbodies. The temperature of these blackbodies is determined in two independent ways: traceable to the ITS-90 gold fixed point or via absolutely calibrated filter radiometers (FR) traceable to the detector primary standard, the cryogenic radiometer. Taking advantage from the high accuracy of the FR calibration, these FRs have also been successfully used for the investigation of the thermodynamic accuracy of the ITS-90 in the range from 419 C to 962 C. For non-contact temperature measurements, the emissivity of the observed object is one of the most important parameters. Therefore, PTB has set up instrumentations for measuring the directional spectral and total emissivity of samples in air from 80 C up to 400 C over a spectral range from 4 µm to 40 µm and under vacuum from 0 C to 600 C and in the spectral range from 1 µm to 1000 µm. Y1 - 2009 UR - http://www.cenam.mx/dme/pdf/EXT_A-Vie-1.pdf PB - Encuentro Nacional de Metrología Eléctrica 2009 CY - Queretaro (Mexico) ER - TY - JOUR A1 - Hartmann, Jürgen A1 - Machin, Graham A1 - Bloembergen, P A1 - Anhalt, Klaus A1 - Sadli, M A1 - Saunders, P A1 - Wooliams, E A1 - Yamada, Y A1 - Yoon, H T1 - Practical Implementation of the Mise en Pratique for the Definition of the Kelvin Above the Silver Point JF - International Journal of Thermophysics N2 - The “Mise en pratique for the definition of the kelvin” (MeP-K) was established in April 2006 to be the repository of information required to perform a “practical measurement of temperature in accordance with the International System of Units (SI).” This article describes the progress made by the MeP-K HT (High Temperature Task Group) of CCT-WG5 (radiation thermometry) in drawing together the appropriate methods for accessing thermodynamic temperature above the silver point involving direct radiometric measurements on the one hand and indirect extrapolation, interpolation, and least-squares fitting on the other. An examination of the uncertainties and a brief discussion of the advantages and disadvantages of the various approaches are given. A summary of the remaining issues to be resolved concludes the article. Y1 - 2010 U6 - https://doi.org/10.1007/s10765-010-0834-5 VL - 31 IS - 8-9 SP - 1779 EP - 1788 ER - TY - JOUR A1 - Hartmann, Jürgen A1 - Anhalt, Klaus A1 - Hollandt, Jörg A1 - Schreiber, Ekkehard A1 - Yamada, Y. T1 - Improved thermal stability of the linear pyrometer LP3 for high temperature measurements within the EU-project Himert JF - VDI Bericht 1784 Y1 - 2003 SP - 135 EP - 141 ER - TY - CHAP A1 - Hartmann, Jürgen A1 - Machin, Graham A1 - Yamada, Y. A1 - Lowe, D. A1 - Sasajima, N. A1 - Anhalt, Klaus A1 - Goebel, R. A1 - McEvoy, H.C. A1 - Bloembergen, P. ED - Zvizdic, D. T1 - A comparison of high temperature fixed-points of Pt-C and Re-C constructed by BIPM, NMIJ and NPL BT - Proc. 9th Int. Symp. on Temperature and Thermal Measurements in Industry and Science T2 - Proceedings of Tempmeko 2004 Y1 - 2005 SP - 1049 EP - 1056 PB - LPM/FSB CY - Zagrep ER - TY - CHAP A1 - Hartmann, Jürgen A1 - Anhalt, Klaus A1 - Edler, F. T1 - High-temperature fixed-points for improved temperature metrology above 1100 °C BT - 9. Workshop on subsecond thermophysics, September 2010 Y1 - 2010 CY - Graz ER -