Experimental determination of the emissivity coefficient of selected materials

Adam Idzkowski; Wojciech Walendziuk; Aleksander Sawicki

doi:10.1117/12.2248520

28 September 2016 Experimental determination of the emissivity coefficient of selected materials

Adam Idzkowski, Wojciech Walendziuk, Aleksander Sawicki

Proceedings Volume 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016; 100311S (2016) https://doi.org/10.1117/12.2248520
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, 2016, Wilga, Poland

Abstract

This paper concerns the experimental determination of the emissivity of selected materials (metals and alloys). In the first chapter the theoretical aspects are presented. Then ISO 18434-1:2008 norm, as the standard regulating all issues related to the emissivity and the way of its determination, is described. The aim of work was to modernize the laboratory stand for non-contact temperature measurements. The modernized laboratory stand was equipped with the modern data acquisition module (National Instruments NI 9203). It enabled to present temperature measurement data and to save it on the PC. As a result, students will be able to conduct more measurements and to make more conclusions about the emissivity of materials and its influence on a temperature result. Sample measurements and calculations were presented. The final element of study was to determine emissivity for each plate. It was made by calculations basing on the values: reference temperature (from Pt100 sensor) and non-contact temperature (from pyrometer). The emissivity values determined from these calculations were compared with the values obtained through published tables in the literature and with the values received by means of NEC Avio G100 thermographic camera. The expanded uncertainty of determined emissivity coefficient was also estimated.

Citation Download Citation

Adam Idzkowski, Wojciech Walendziuk, and Aleksander Sawicki "Experimental determination of the emissivity coefficient of selected materials", Proc. SPIE 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, 100311S (28 September 2016); https://doi.org/10.1117/12.2248520

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KEYWORDS

Temperature metrology

Sensors

Pyrometry

Metals

Black bodies

Cameras

Thermal imaging cameras

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