rmjournalЭталоны. Стандартные образцыMeasurement Standards. Reference Materials2687-0886D. I. Mendeleyev Institute for Metrology10.20915/2077-1177-2024-20-1-17-30rmjournal-473Research ArticleЭталоныStandardsКомплексы ГЭТ 17/1–КВИ и ГЭТ 17/2–КВН из состава Государственного первичного эталона единиц динамической и кинематической вязкости жидкости ГЭТ 17–2018Complexes GET 17/1–KVI and GET 17/2–KVN from GET 17–2018 State Primary Standard of Dynamic and Kinematic Liquid Viscositieshttps://orcid.org/0000-0001-7160-7078ДемьяновА. А.DemyanovA. A.

Демьянов Алексей Алексеевич –  руководитель научно-исследовательской лаборатории госэталонов в области измерений плотности и вязкости жидкости 

г. Санкт-Петербург, Московский пр., 19 

ResearcherID: O-3983–2018

Aleksey A. Demyanov – H ead of Density and Viscosity Laboratory

19 Moskovsky ave., Saint Petersburg, 190005

ResearcherID: O-3983–2018

ФГУП «ВНИИМ им. Д. И. Менделеева»РоссияD. I. Mendeleyev Institute for Metrology (VNIIM)Russian Federation2024080420242011730Copyright © Демьянов А.А., 20242024Демьянов А.А.Demyanov A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.rmjournal.ru/jour/article/view/473

Вязкость –  важнейшее свойство жидких сред, определяющее их качество, а также возможности их переработки и транспортировки. Измерения вязкости выполняют во многих отраслях промышленности для управления технологическими процессами, в которых вязкость является одним из контролируемых параметров конечного продукта. Точность измерений вязкости важна также в медицине и биологии, для организации исследований новых материалов.

Настоящая статья в жанре обзора поднимает вопросы измерения вязкости жидкости капиллярным методом, раскрывает факторы и причины, обосновывающие становление капиллярного метода как основного метода высокоточных измерений, который нашел применение во многих странах.

Автор приводит описание двух эталонных комплексов из состава Государственного первичного эталона единиц динамической и кинематической вязкости жидкости ГЭТ 17–2018. Первого –  ЭК ГЭТ 17/1-КВИ, предназначенного для воспроизведения, хранения и передачи единицы кинематической вязкости в диапазоне значений температуры от 20 до 40 °C. Второго – Э К ГЭТ 17/2-КВН, предназначенного для воспроизведения, хранения и передачи единицы кинематической вязкости в диапазонах значений температуры от –40 до +20 °C и от 40 до 150 °C. В фокусе внимания –  принцип работы и основные метрологические характеристики данных эталонных комплексов, а также результаты международных ключевых сличений с их участием.

В перспективе материалы исследования могут оказать влияние при определении вектора развития средств и методов измерения вязкости жидкости.

Viscosity is the most important property of liquid medium, determining the quality, as well as the possibility of their processing and transportation. Viscosity measurements are performed in many industries to control technological processes in which viscosity is one of the controlled parameters of the final product. Accuracy of viscosity measurements is also necessary in medicine and biology to organize research for new materials.

This review article raises issues of measuring liquid viscosity using the capillary method, reveals the factors and reasons justifying the emergence of the capillary method as the main method of high-precision measurements used in many countries.

The author describes two standard complexes from GET 17–2018 State Primary Standard of Dynamic and Kinematic

Liquid Viscosities. The first is EK GET 17/1-KVI designed for reproducing, storing, and transmitting a unit of kinematic viscosity in the temperature range from 20 to 40 °C. The second is EK GET 17/2-KVN designed for reproducing, storing, and transmitting a unit of kinematic viscosity in the temperature ranges from –40 to +20 °C and from 40 to 150 °C. The focus is on the operating principle and main metrological characteristics of these reference complexes, as well as the results of international key comparisons involving them.

In the future, the research materials may influence the development vector of means and methods for measuring liquid viscosity.

воспроизведение единицыкапиллярный методкинематическая вязкостьметод Step Upсличенияэталонreproduction of unitcapillary methodkinematic viscosityStep Up methodcomparisonsstandardСтатья подготовлена во исполнение следующих документов: 1) Соглашения о предоставлении субсидий на возмещение затрат, связанных с осуществлением мероприятий в области обеспечения единства измерений № 172-11-008 от 07.06.2017; 2) Дополнительного соглашения № 1 72–11–008/2 от 03.04.2018; 3) Дополнительного соглашения 172–11–008/3 от 21.06.2018; 4) Дополнительного соглашения № 172–11–008/4 от 03.10.2018 по Приложению № 4 «Разработка, совершенствование и содержание Государственных первичных эталонов единиц величин, а также разработка и совершенствование Государственных референтных методик (методов) измерений». Автор выражает глубокую признательность д-ру техн. наук, старшему научному сотруднику Владимиру Шалвовичу Сулаберидзе за советы и ценные замечания при подготовке статьи. Автор благодарит рецензентов за экспертное мнение и конструктивный подход.The article was prepared in pursuance of the following documents: 1) Agreement on the provision of subsidies for reimbursement of costs associated with the implementation of measures in the field of ensuring the uniformity of measurements No. 172-11-008 dated 07.06.2017; 2) Additional agreement No. 172–11–008/2 dated 03.04.2018; 3) Additional agreement 172–11–008/3 dated 21.06.2018. 5) Additional agreement No. 172– 11–008/4 dated 03.10.2018 on Appendix No. 4 «Development, improvement and maintenance of State primary standards of units of quantities, as well as development and improvement of State reference measurement procedures (methods)». The author expresses their gratitude to Vladimir Sh. Sulaberidze, Dr. Sci. 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