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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2021-2-3-8</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1749</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ГОСУДАРСТВЕННЫЕ ЭТАЛОНЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>STATE STANDARDS</subject></subj-group></article-categories><title-group><article-title>Государственный первичный специальный эталон единиц массы и объёма жидкости в потоке, массового и объёмного расходов жидкости ГЭТ 63-2019</article-title><trans-title-group xml:lang="en"><trans-title>State primary special standard of units of mass and volume of liquid in a stream, mass and volumetric fowrates of liquid GET 63-2019</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7250-3246</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тухватуллин</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Tukhvatullin</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Альберт Рашидович Тухватуллин</p><p>Казань</p></bio><bio xml:lang="en"><p>Albert R. Tukhvatullin</p><p>Kazan</p></bio><email xlink:type="simple">vniir-etalon@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6706-0679</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щелчков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchelchkov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Валентинович Щелчков</p><p>Казань</p></bio><bio xml:lang="en"><p>Alexey V. Shchelchkov</p><p> Kazan</p></bio><email xlink:type="simple">avschelchkov@kai.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3814-2544</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фафурин</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fafurin</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Андреевич Фафурин</p><p>Казань</p></bio><bio xml:lang="en"><p>Viktor A. Fafurin</p><p>Kazan</p></bio><email xlink:type="simple">fafurin.viktor@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт расходометрии – филиал ФГУП «Всероссийский научноисследовательский институт метрологии им. Д. И. Менделеева»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>VNIIR, Affiliated branch of the D. I. Mendeleyev Institute for Metrology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт расходометрии – филиал ФГУП «Всероссийский научноисследовательский институт метрологии им. Д. И. Менделеева;&#13;
Казанский национальный исследовательский технический университет им. А. Н. Туполева – КАИ</institution><country>Россия</country></aff><aff xml:lang="en"><institution>VNIIR, Affiliated branch of the D. I. Mendeleyev Institute for Metrology; &#13;
A. N. Tupolev Kazan National Research Technical University – KAI</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Казанский национальный исследовательский технологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan National Research Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>20</day><month>06</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>3</fpage><lpage>8</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/1749">https://www.izmt.ru/jour/article/view/1749</self-uri><abstract><p>Изложены аспекты совершенствования метрологического обеспечения измерений единиц массы и объёма жидкости в потоке, массового и объёмного расходов жидкости в Российской Федерации. Рассмотрены принципиально новые конструктивные решения ключевых модулей эталонной установки ЭУ-3 Государственного первичного специального эталона единиц массы и объёма жидкости в потоке, массового и объёмного расходов жидкости ГЭТ 63-2019. Конструктивные решения базируются на результатах численного и физического моделирования процессов гидродинамики при вынужденном течении рабочей среды (воды) в трубопроводах с различной геометрией проточной части. Обоснованы принципы действия модулей стабилизации и регулирования расхода воды. Представлены новаторские решения по конструкции чувствительных элементов переключателя потока, принципу построения временной диаграммы и определению интервала времени измерений. Представлены метрологические характеристики ГЭТ 63-2019.</p></abstract><trans-abstract xml:lang="en"><p>The article describes aspects of improving metrological support for measuring units of mass and volume of liquid in the flow, mass and volume flow of liquid in the Russian Federation. We consider fundamentally new design solutions for key modules of the reference unit EU-3 of the state primary special standard for units of mass and volume of liquid in the flow, mass and volume flow of liquid GET 63-2019, based on numerical and physical modeling of hydrodynamic processes under forced pressure flow of the working medium (water) in pipelines with different  flow geometry. The principles of operation of water flow stabilization and control modules are substantiated. Innovative solutions are presented for the design of sensitive elements of the flow switch, the principle of constructing a time diagram, and determining the measurement time interval. Metrological characteristics of the state primary special standard of units of mass and volume of liquid in the flow, mass and volume flow of liquid GET 63-2019 are presented.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>эталонная установка</kwd><kwd>бюджет неопределённости</kwd><kwd>метрологические характеристики</kwd><kwd>свободная поверхность воды</kwd><kwd>радиусное сопло</kwd><kwd>равномерный профиль скорости</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reference setting the budget of uncertainty</kwd><kwd>metrological characteristics</kwd><kwd>the free water surface</kwd><kwd>the radius of the nozzle</kwd><kwd>a uniform velocity profile.</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Engel R., Beyer K., and Baade H.-J., Measurement Science and Technology, 2012, vol. 23, no. 7, p. 074020. https://doi.org/10.1088/0957-0233/23/7/074020</mixed-citation><mixed-citation xml:lang="en">Engel R., Beyer K., and Baade H.-J., Measurement Science and Technology, 2012, vol. 23, no. 7, p. 074020. https://doi.org/10.1088/0957-0233/23/7/074020</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Chun S., Yoon B.-R., Uncertainty evaluation of fl ow meter calibration by gravimetric water fl ow standards at kriss, 18th Int. 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