Gesamtliste der Publikationen

With growing requirements to achieve an ever better precision in the metal-working industry, novel high-precision measuring techniques need to be developed. Especially in the automobile industry, for example ring gauges presenting a roundness deviation of < 0.1 mm are required. Thus, measuring uncertainties in the 10 nm-range are highly desirable when producing such ring gauges. The measuring set-up has to meet highest metrological demands, and error sources have to be minimized or even avoided. In addition, measuring and testing shall be carried out at an ever higher speed.

A new triple-fixed-point blackbody containing the fixed-point materials aluminum (freezing point 660.323&ayn;C), zinc (FP 419.527&ayn;C), and tin (FP 231.928&ayn;C) in one device has been developed at the Ilmenau University of Technology. It enables calibration of a radiation thermometer with direct reference to the ITS-90 at three fixed points after a single adjustment of the calibration object. The setup significantly reduces the technical effort and the time for the calibration procedure. Measurements of the phase-transition temperature and the time-dependent blackbody temperature made with a transfer radiation thermometer, the Linearpyrometer LP5 of the IKE Stuttgart, are presented in the article.