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Information × Registration Number 0222U000363, 0121U110521 , R & D reports Title Improvement of the national primary measurement standard of kelvin temperatures unit in the range from 273.16 K to 1357.77 K DETU 06-05-98 popup.stage_title Head Ivanova Kateryna Р., Registration Date 07-01-2022 Organization National Science Center "Institute of Metrology" popup.description2  The object of work are methods and means of contact temperature measurements at the reference level. The purpose of work is to ensure the unity and traceability of temperature measurements in Ukraine in the field of contact thermometry by improving the state primary standard of the Kelvin unit in the range from 273.16 K to 1357.77 K DETU 06-05-98 (hereinafter - the state primary standard), and also improving its metrological characteristics and expanding functionality. The subject of work is the improvement of the state primary standard of the Kelvin unit of temperature in the range from 273.16 K to 1357.77 K, namely, improving its technical and metrological characteristics: reducing the uncertainty components associated with metrological characteristics of reference points by increasing purity benchmark metals to the level of 99.9999% by mass fraction; increase of accuracy of measurements of electric resistance of reference platinum thermometers of resistance PTS-25, VTS by means of thermometric precision bridges F900, microK 250; expanding the functionality of the standard in terms of providing conditions for the transfer of unit temperature to high-precision measuring instruments with different designs through the use of liquid thermostat Libra model 785 and high temperature furnace Fluke 9116A, which are included in the standard and can be used for direct verification. Product Description popup.authors Fil Svitlana V Yuriev Artem O popup.nrat_date 2022-03-09 Close