A5022761843- Calibration and Measurement Techniques
- Scientific Measurement and Uncertainty Evaluation
- Chemical Thermodynamics and Molecular Structure
- Advanced Sensor Technologies Research
- Thermography and Photoacoustic Techniques
- Radiative Heat Transfer Studies
- Infrared Target Detection Methodologies
- Atmospheric Ozone and Climate
- Spacecraft and Cryogenic Technologies
- Thermodynamic and Structural Properties of Metals and Alloys
- Sensor Technology and Measurement Systems
- Metallurgical Processes and Thermodynamics
- Solidification and crystal growth phenomena
- Optical and Acousto-Optic Technologies
- Material Properties and Applications
- Atmospheric and Environmental Gas Dynamics
- Infrared Thermography in Medicine
- Advanced Power Generation Technologies
- nanoparticles nucleation surface interactions
- Engineering Diagnostics and Reliability
- Freezing and Crystallization Processes
- Microwave and Dielectric Measurement Techniques
- Material Science and Thermodynamics
- Mining and Gasification Technologies
- Radioactive Decay and Measurement Techniques
D.I. Mendeleyev All-Russian Institute for Metrology
2011-2023
All-Russian research Institute of metrological service
2013-2023
All-Russian Scientific Research Institute of Butter and Cheese Making
2013-2022
In 2011, a working group of the Consultative Committee for Thermometry published their best estimates differences between thermodynamic temperature T and its approximation (T90), according to International Temperature Scale 1990, ITS-90. These consensus estimates, in combination with measurements made accordance ITS-90, are an important alternative primary thermometry those requiring accurate temperature. Since there has been change definition kelvin significant improvements thermometry....
The triple point of water serves to define the kelvin, unit thermodynamic temperature, in International System Units (SI). Furthermore, it is most important fixed Temperature Scale 1990 (ITS-90). Any uncertainty realization contributes directly measurement over wide temperature range from 13.8033 K 1234.93 K. Consultative Committee for Thermometry (CCT) decided at its 21st meeting 2001 carry out a comparison cells and charged BIPM with organization. Water 20 national metrology institutes...
In this paper, we specify the purpose of an international temperature scale and present some definitions that are basic to International Temperature Scale 1990. These include those for non-uniqueness fixed points underlying scale. Three types identified.
This is a summary of the Consultative Committee for Thermometry (CCT) Key Comparison CCT-K3, i.e. comparison realizations fixed points International Temperature Scale 1990 (ITS-90) over range 83.8058 K to 933.473 K. The differences in various this ITS-90 and uncertainties those are given fifteen standards laboratories participating comparison.
From 2002 to 2004 the Consultative Committee for Thermometry (CCT) carried out a Key Comparison (KC) of water triple point cells (CCT-K7). In 2005 Regional Metrology Organization (RMO) EURAMET decided initiate an additional KC cells, EUROMET.T-K7, extend metrological equivalence larger number national metrology institutes (NMIs) from region.
The results of the experimental study inner interface formation process under different conditions its initiation for indium freezing point showed that, depending on intensity, both planar structure thermometer well and a noticeable intergrowth dendrites could be obtained. However, some specific disappeared partly or completely in crystallization. value temperature was measured realization corresponding to structure.
Techniques are recommended for comparisons, at the highest levels of accuracy, fixed-point cells defining fixed points, excluding vapour-pressure ITS-90, which used contact thermometry. The authors members Working Group 1 Consultative Committee Thermometry (CCT) Comité International des Poids et Mesures, dealing with Defining Fixed Points and Interpolating Instruments underlying realization ITS-90.
The comparison EUROMET.T-K4 is the regional extension of CCT-K4: an intercomparison realisations freezing points Al (660.323 ?C) and Ag (961.78 ?C). was organized in four loops with long stem standard platinum resistance thermometers (SPRTs) as travelling standards: One 25 ? thermometer to be used only at point two high temperature SPRTs each loop. Parallel measurements pilot sub-pilots internal using fixed cell. Most HTSPRTs showed a strong drift which mainly due mechanical stress poisoning...