Bilateral Comparison of Mercury and Gallium Fixed-Point Cells Using Standard Platinum Resistance Thermometer

Bojkovski, Jovan and Veliki, Tomislav and Drnovšek, Janko and Zvizdić, Davor (2011) Bilateral Comparison of Mercury and Gallium Fixed-Point Cells Using Standard Platinum Resistance Thermometer. = Bilateral Comparison of Mercury and Gallium Fixed-Point Cells Using Standard Platinum Resistance Thermometer. International journal of thermophysics, 32 (7). pp. 1544-1552. ISSN 0195-928X. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q3 (2011). Točan broj autora: 4.

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Official URL: http://link.springer.com/article/10.1007/s10765-01...

Abstract

The objective of project EURAMET 1127 (Bilateral comparison of triple point of mercury and melting point of gallium) in the field of thermometry is to compare realization of a triple point of mercury (−38.8344 °C) and melting point of gallium (29.7646 °C) between the Slovenian national laboratory MIRS/UL-FE/LMK and the Croatian national laboratory HMI/FSB-LPM using a long-stem 25 Ω standard platinum resistance thermometer (SPRT). MIRS/UL/FE-LMK participated in a number of intercomparisons on the level of EURAMET. On the other hand, the HMI/LPM-FSB laboratory recently acquired new fixed-point cells which had to be evaluated in the process of intercomparisons. A quartz-sheathed SPRT has been selected and calibrated at HMI/LPM-FSB at the triple point of mercury, the melting point of gallium, and the water triple point. A second set of measurements was made at MIRS/UL/FE-LMK. After its return, the SPRT was again recalibrated at HMI/LPM-FSB. In the comparison, the W value of the SPRT has been used. Results of the bilateral intercomparison confirmed that the new gallium cell of the HMI/LPM-FSB has a value that is within uncertainty limits of both laboratories that participated in the exercise, while the mercury cell experienced problems. After further research, a small leakage in the mercury fixed-point cell has been found.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): fixed-points cells; temperature calibration
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 300 Department of Thermodynamics, Thermal and Process Engineering > 320 Chair of Thermal and Process Engineering
Indexed in Web of Science: Yes
Indexed in Current Contents: Yes
Quartiles: Q3 (2011)
Date Deposited: 07 Feb 2017 12:42
Last Modified: 07 Feb 2017 12:42
URI: http://repozitorij.fsb.hr/id/eprint/7228

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