State Primary Standard of Unit Specific Heat of Solids in the Temperature Range from 1800 K to 3000 K
State primary standard unit of specific heat of solids operates in the field of thermophysical measurements. The standard reproduces and stores the unit of specific heat and specific enthalpy, which is transferred to the existing measuring equipment in order to ensure the uniformity of measurements in the country.
The standard provides measurement and reproduction of a unit of specific heat of solids in the range from 50 J / kgK to 2500 J / kgK in the temperature range from 1800 K to 3000 K.
The extended uncertainty of measuring the energy equivalent of a calorimeter is 3.3 · 10-3 in relative units.
The transfer of a unit of specific heat and specific enthalpy to the existing measured instruments, namely: calorimetric mixing, direct heating and thermal analysis is provided by reference measures.
The state primary standard of the unit of specific heat took part twice in international comparisons within COOMET.
Metrological characteristics | |
Range | from 1800 K to 3000 K |
Uncertainty by type A (uA) | 4⋅10-4 |
Uncertainty by type B (uB) | 1,6⋅10-3 |
Total standard uncertainty (uC) | 1,65⋅10-3 |
Extended uncertainty (U) | 3,3⋅10-3 |