State Primary Standard of Unit Temperature for Radiation in the Range From 1357.7 K to 2800 K

The state primary standard of unit temperature on radiation of DETU 06-03-96 is intended for reproduction, storage and transfer of the size of unit of temperature on radiation in the range from 1357 K to 2800 K to standard and working means of measuring equipment.

Reproduction of a unit of temperature is carried out by an optical method according to the Provision on the International temperature scale of 1990 (ITS-90). The construction of the temperature scale is based on the ratio that follows from Planck's law. When reproducing a unit of temperature, a completely "black body" emitter is used at the phase transition of high-purity copper hardening and a monochromatic linear pyrometer LP-4.

The transfer of the unit temperature to the secondary standards is performed by the method of direct measurements and comparison with a comparator in accordance with DSTU 3194: 2005 "Metrology. State calibration scheme for temperature measuring instruments. Non-contact temperature measuring instruments ".

The customers of services for calibration of pyrometers, thermal imagers and radiators are enterprises in the field of metallurgy, energy, oil and gas industry, mechanical engineering, production of building materials, refractories, glass, synthesis and processing of materials, defense industry. The standard is also used for calibration of measuring instruments used in industries related to energy conservation, ecology, human safety in man-made accidents, in the performance of scientific research.

Metrological characteristics


from 1084,62 °С to 2526,85 °С

Uncertainty by type A (uA)

1,9 °С

Uncertainty by type B (uB)

0,37 °С

Total standard uncertainty (uC)

1,94 °С

Extended uncertainty (U)

3,87 °С