Abstract
In the framework of the European research project EURAMET 732, the Slovak Institute of Metrology (SMU) built three primary gallium fixed-point cells of different designs. The cells are designed for the calibration of the long-stem SPRT. In regard to the procedure commonly used at SMU when realizing the gallium point, the cells are designed for use in a stirred liquid bath. This article provides information about the cell designs, materials used, method of filling, and results of the performed experiments. The experiments were focused on the study of the cells’ metrological characteristics, some effects that could influence the melting-point temperature and the effect of the melted metal fraction on the immersion profile. New cells were compared with the SMU reference gallium cell.
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Ranostaj, J., Ďuriš, S., Knorová, R. et al. New SMU Gallium Fixed-Point Cells. Int J Thermophys 32, 1535–1543 (2011). https://doi.org/10.1007/s10765-011-0952-8
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DOI: https://doi.org/10.1007/s10765-011-0952-8