Comparison of the Calibration of Standard Platinum Thermometers by Comparison in the Range from -80∘C to 300∘C

• Published in: International journal of thermophysics 2016-03, Vol.37 (3)
• Main Authors: Bojkovski, J., Arifovic, N., Hodzic, N., Hoxha, M., Misini, M., Petrusova, O., Simic, S., Vukicevic, T., Drnovsek, J.
• Format: Article
• Language: English
• Subjects: Classical Mechanics; Condensed Matter Physics; Humidity; Industrial Chemistry/Chemical Engineering; Moisture and Thermal Measurements in Industry and Science; Physical Chemistry; Physics; Physics and Astronomy; Tempmeko 2013; TEMPMEKO 2013: Selected Papers of the 12th International Symposium on Temperature
• ISSN: 0195-928X; 1572-9567
• DOI: 10.1007/s10765-015-2034-9

In this paper, an interlaboratory comparison in the field of measurement of temperature is presented. Within the comparison, calibration of a standard platinum resistance thermometer (SPRT) by comparisons in the range from - 80 ∘ C to 300 ∘ C was performed. At the same time, in order to support the calibration and measurement capabilities (CMCs) entries of the participating laboratories, we have registered this as EURAMET Project 1251 (Comparison of the calibration of standard platinum resistance thermometers in the range from - 80 ∘ C to 300 ∘ C by comparison). It was recommended that the participants use their standard procedure for the calibration of the standard platinum resistance thermometers and follow instructions from the protocol of EURAMET Project 1251 during the temperature calibration and, if possible, avoid making extra time-consuming measurements. The interlaboratory comparison was organized by the University of Ljubljana, Faculty of Electrical Engineering, Laboratory of Metrology and Quality (MIRS/UL-FE/LMK) in the scope of the IPA 2011 project. The interlaboratory comparison included a maximum of eleven measurement points. However, certain laboratories did not perform measurements at all points in the range. They have performed only measurements in the range that they cover. Prior to the calibration by comparison in each laboratory, a test measurement at the triple point of water or ice point was done in order to assess the stability of the instruments. Results of the comparison show that all the measurements agree within declared uncertainties and thus supporting declared capabilities of the participating laboratories.