ГЭТ 60-2019 (НИЛ 2416)

The primary standard consists of a set of technical means:

1. KA-S4 adiabatic calorimeter;
2. No. 01 leucosapphire specific heat capacity unit;
3. No. 02 molybdenum specific heat capacity unit;
4. No. 03 copper specific heat capacity unit;
5. No. 04 beryllium specific heat capacity unit;
6. Comparator calorimeter.

Priority application areas: enterprises and research institutes of the military-industrial complex, instrument-making and mechanical engineering, enterprises and research institutes of nuclear energy, enterprises providing heat supply, research institutes and laboratories dealing with materials science issues, enterprises and research institutes of the construction industry, enterprises of the chemical industry, organizations of the pharmaceutical industry.

The standard ensures the uniformity of measurements of the specific heat capacity of solids in the range from 50 to 2900 K in the temperature range from 260 to 870 K, provides the ability to verify, calibrate, and test measuring instruments of heat capacity, creates an instrumental base for supporting the development of new structurally complex materials, and provides the ability to conduct metrologically reliable research and certification of materials in terms of measuring their specific heat capacity.

1. Unity in the field of specific heat capacity measurements has been ensured in the range from 50 to 2900 J/(kgˑK) at temperatures from 260 to 870 K.
2. Means of transferring the unit of specific heat capacity of solids have been developed – secondary standards of the unit of specific heat capacity of solids, which ensure the transfer of the unit of specific heat capacity to all existing specific heat capacity measurement instruments in the Russian Federation in the temperature range from 260 to 870 K.
3. Standard calibration methods have been developed to ensure traceability of all subordinate specific heat capacity measurement instruments for solids.

4. The following regulatory documents have been developed:

   • ГОСТ R 8.1034-2024 "Beryllium. Thermal coefficient of linear expansion and specific heat capacity in the temperature range from 260 K to 870 K", approved by order of the Federal Agency for Technical Regulation and Metrology dated February 14, 2024, No. 212-st (RD put into effect)
   • GSSSD 454-2024 "Tungsten. Thermal coefficient of linear expansion in the temperature range from 150 K to 2700 K and specific heat capacity in the range from 260 K to 870 K”, approved by the order of the Federal Agency for Technical Regulation and Metrology Order of Rosstandart dated 06.09.2024 No. 2148

During the development of the adiabatic calorimeter, design solutions were proposed, the uniqueness of which is confirmed by patents of the Russian Federation RU 2727342 C1 and Germany DEPatentNr. 10 2020 126 865. (Please write this exactly as it is due to controversial issues).