rmjournalЭталоны. Стандартные образцыMeasurement Standards. Reference Materials2687-0886D. I. Mendeleyev Institute for Metrology10.20915/2077-1177-2023-19-4-7-15rmjournal-417Research ArticleЭталоныStandardsОбеспечение единства измерений в области радиационной термометрии на основе нового определения единицы температурыEnsuring the Uniformity of Measurements in the Field of Radiation Thermometry on the Basis of a New Definition of the Unit of Temperaturehttps://orcid.org/0000-0002-1480-3264СильдЮ. А.SildIu. A.

Сильд Юрий Альфредович – руководитель лаборатории эталонов и научных исследований в области инфракрасной радиометрии и прикладной пирометрии

190005, г. Санкт-Петербург, Московский пр., 19

Iurii A. Sild – Head of Radiometric and Applied Pyrometry Laboratory, Thermodynamics Department

19, Moskovsky pr., St. Petersburg, 190005

y.a.sild@vniim.ruФГУП «Всероссийский научно-исследовательский институт метрологии им. Д. И. Менделеева»РоссияD. I. Mendeleyev Institute for MetrologyRussian Federation202324092023194715Copyright © Сильд Ю.А., 20232023Сильд Ю.А.Sild I.A.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.rmjournal.ru/jour/article/view/417

Обеспечение единства измерений (ОЕИ) в области температурных измерений, в частности – радиационной термометрии, – одна из основных задач метрологии, решаемых на государственном уровне. Система метрологического обеспечения (МО) средств радиационной термометрии нуждается в непрерывном поддержании на уровне, отвечающем современным требованиям науки, техники, промышленности. С целью развития и совершенствования системы ОЕИ в радиационной термометрии в последние годы проведен ряд мероприятий, а именно: разработана новая эталонная база, в том числе – создан государственный первичный эталон (ГПЭ) единицы температуры в диапазоне от 0 °C до 3 200 °C, реализующий новое определение кельвина; разработана новая государственная поверочная схема (ГПС), регламентирующая передачу единицы температуры рабочим средствам от ГПЭ.

Для снижения нагрузки на ГПЭ, уменьшения потери точности при передаче единицы термодинамической температуры и удовлетворения возросших требований по МО средств измерений создан и исследован вторичный эталон (ВЭТ) единицы температуры в соответствии с новым определением кельвина. В его состав вошли высокотемпературные излучатели на основе реперных точек чистых металлов и эвтектик, излучатель АЧТ и компараторы, обеспечивающие передачу единицы температуры в диапазоне от 961,78 °C до 3 200 °C.

По результатам исследований созданный Государственный вторичный эталон (эталон-копия) единицы температуры в диапазоне значений от 961,78 °C до 3 200 °C утвержден приказом Росстандарта от 21.11.2022 № 2931 и полностью удовлетворяет требованиям в соответствии с ГПС для СИ температуры.

Ensuring the uniformity of measurements (EUM) in the field of temperature measurements, in particular radiation thermometry is one of the main tasks of metrology solved at the state level. The system of metrological support (MS) of radiation thermometry means requires continuous maintenance at the level that meets modern requirements of science, technology, and industry. In order to develop and improve the EUM system in radiation thermometry, a number of measures have been taken in recent years, namely: a new standard base has been developed, including the creation of the State primary standard (SPS) of a temperature unit in the range from 0 °C to 3 200 °C, implementing a new definition of kelvin; a new State verification schedule (SVS) has been developed, which regulates the transfer of the temperature unit to working means from the SPS.

To reduce the load on the SPS, decrease the loss of accuracy in the transfer of a unit of thermodynamic temperature and meet the increased requirements for metrological support of measuring instruments, a secondary standard (SS) of a temperature unit was created and studied in accordance with the new definition of kelvin. It included high-temperature blackbody based on fixed points of pure metals and eutectics, a blackbody and comparators that ensure the transfer of a temperature unit in the range from 961.78 °C to 3 200 °C.

Based on the results of the research, the created State secondary standard (reference standard) of the temperature unit in the range from 961.78 °C to 3 200 °C was approved by the order of Rosstandart dated November 21, 2022 No. 2931 and fully meets the requirements in accordance with the SVS for temperature MI.

обеспечение единства измеренийтермодинамическая температураэталонизлучатели АЧТреперные точкикомпараторensuring the uniformity of measurementsthermodynamic temperaturestandardblackbodyfixed pointscomparatorЧасть исследований выполнена в ФГУП «ВНИИМ им. Д. И. Менделеева» в рамках опытно-конструкторской работы «Совершенствование эталонов единицы температуры в соответствии с новым определением кельвина в диапазоне от 4,2 К до 3473 К» (2017–2019 гг.). Измерения были выполнены на оборудовании ФГУП «ВНИИМ им. Д. И. Менделеева».Part of the research was carried out at VNIIM as part of the development work «Improvement of temperature unit standards in accordance with the new definition of kelvin in the range from 4.2 K to 3473 K» (2017–2019). The measurements were performed on the equipment of VNIIM.ReferencesПоходун А. И. О стратегии развития метрологического обеспечения измерений температуры и теплофизических величин в России // Приборы. 2015. № 8 (182). С. 1–6.Pokhodun A. I. 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The authors declare that there are no conflicts of interest present.