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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">rmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Эталоны. Стандартные  образцы</journal-title><trans-title-group xml:lang="en"><trans-title>Measurement Standards. Reference Materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2687-0886</issn><publisher><publisher-name>D. I. Mendeleyev Institute for Metrology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20915/2077-1177-2023-19-3-7-20</article-id><article-id custom-type="elpub" pub-id-type="custom">rmjournal-399</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>Эталоны</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Standards</subject></subj-group></article-categories><title-group><article-title>Совершенствование государственной  поверочной схемы для средств измерений расхода и количества жидкости</article-title><trans-title-group xml:lang="en"><trans-title>Improvement of the State Verification Schedule for Flow and Quantity Measuring Instruments</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-2078-6850</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корнеев</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Korneev</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Корнеев Роман Александрович –  начальник научно-исследовательский отдела метрологического обеспечения средств и систем измерений расхода и количества жидкости</p><p>420088, Республика Татарстан, г. Казань, ул. 2-я Азинская, д. 7а </p></bio><bio xml:lang="en"><p>Roman A. Korneev –  Head of the Research Department of Metrological Support of Means and Systems for Measuring the Flow and Quantity of Liquid</p><p>7а st. 2nd Azinskaya, Kazan, 420088</p></bio><email xlink:type="simple">rak_1985@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ВНИИР –  филиал ФГУП «ВНИИМ им. Д. И. Менделеева»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>VNIIR –  Affiliated Branch of D. I. Mendeleyev Institute for Metrology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>19</day><month>07</month><year>2023</year></pub-date><volume>19</volume><issue>3</issue><fpage>7</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Корнеев Р.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Корнеев Р.А.</copyright-holder><copyright-holder xml:lang="en">Korneev R.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.rmjournal.ru/jour/article/view/399">https://www.rmjournal.ru/jour/article/view/399</self-uri><abstract><p>В статье представлены исторические и метрологические аспекты развития системы метрологического обеспечения средств и систем измерений расхода и количества жидкости в сфере государственного регулирования обеспечения единства измерений. Обоснована целесообразность метода косвенных измерений при передаче единиц расхода и количества жидкости для установок поверочных с весовыми устройствами с учетом источников неопределенности, обусловленных динамическими влияющими факторами на метрологические характеристики поверочных установок с весовыми устройствами, наряду с методами непосредственного сличения и сличения при помощи эталона сравнения. Разъяснены методологические подходы, используемые при наличии воздействий на статическую модель измерений расхода и количества жидкости, обусловленные динамическими изменениями основных параметров потока жидкости (колебаний расхода, температуры, давления жидкости в напорном трубопроводе) и гидродинамическими особенностями при истечении потока жидкости из среза сопла переключателя потока (формирование равномерного профиля скорости и степень заполнения жидкостью среза сопла).</p></abstract><trans-abstract xml:lang="en"><p>The article describes the historical and metrological aspects of the development of a system of metrological support of means and systems for measuring the flow and amount of liquid in the field of state regulation of ensuring the uniformity of measurements. The expediency of the method of indirect measurements in the transfer of units of flow and the amount of liquid for verification installations with weighing devices is substantiated, taking into account the sources of uncertainty due to dynamic influencing factors on the metrological characteristics of verification installations with weighing devices along with the methods of direct comparison and comparison using a comparison standard. The methodological approaches used in the presence of impacts on the static model of measuring the flow rate and amount of liquid due to dynamic changes in the main parameters of the liquid flow (fluctuations in the flow rate, temperature, pressure of the liquid in the pressure pipeline) and hydrodynamic features when the liquid flow flows out of the nozzle of the flow switch nozzle (formation a uniform velocity profile, and the degree of liquid filling of the nozzle exit).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>государственная поверочная схема</kwd><kwd>метод косвенных измерений</kwd><kwd>установка поверочная с весовыми устройствами</kwd><kwd>динамические влияющие факторы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>state verification schedule</kwd><kwd>method of indirect measurements</kwd><kwd>verification installation with weighing devices</kwd><kwd>dynamic influencing factors</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">Тайбинский А. 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