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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.2021-8-8-15</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1930</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>30-летие коомет</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THE 30TH ANNIVERSARY OF COOMET</subject></subj-group></article-categories><title-group><article-title>Государственный первичный эталон единицы температуры – кельвина – в диапазоне от 0,3 до 273,16 К ГЭТ 35-2021: реализация нового определения единицы температуры</article-title><trans-title-group xml:lang="en"><trans-title>Realization of new definition of kelvin on National primary state standard of temperature in the temperature range from 0.3 K to 273.16 K GET 35-2021</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4049-823X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кытин</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kytin</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Геннадьевич Кытин</p><p>г. п. Менделеево, Московская обл.;</p><p>Москва</p></bio><bio xml:lang="en"><p>Vladimir G. Kytin</p><p>Mendeleevo, Moscow region</p><p>Moscow</p></bio><email xlink:type="simple">vkytin@vniiftri.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гавалян</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ghavalyan</surname><given-names>M. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мамикон Юрьевич Гавалян</p><p>г. п. Менделеево, Московская обл.</p></bio><bio xml:lang="en"><p>Mamikon Yu. Ghavalyan</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">ghavalyan@vniiftri.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петухов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Petukhov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Анатольевич Петухов</p><p>г. п. Менделеево, Московская обл</p></bio><bio xml:lang="en"><p>Aleksey A. Petukhov</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">petukhov@vniiftri.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Потапов</surname><given-names>Б. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Potapov</surname><given-names>B. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Борис Геннадьевич Потапов</p><p>г. п. Менделеево, Московская обл</p></bio><bio xml:lang="en"><p>Boris G. Potapov</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">potapov@vniiftri.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ражба</surname><given-names>Я. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Razhba</surname><given-names>Y. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Яков Евсеевич Ражба</p><p>г. п. Менделеево, Московская обл</p></bio><bio xml:lang="en"><p>Yakov E. Razhba</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">razhba@vniiftri.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Асланян</surname><given-names>Э. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Aslanyan</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Эдуард Георгиевич Асланян</p><p>г. п. Менделеево, Московская обл</p></bio><bio xml:lang="en"><p>Edward G. Aslanyan</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">aslanyan@vniiftri.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щипунов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Schipunov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Николаевич Щипунов</p><p>г. п. Менделеево, Московская обл</p></bio><bio xml:lang="en"><p>Andrey N. Schipunov</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">schipunov@vniiftri.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт физико-технических и радиотехнических измерений;&#13;
Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian metrological institute of technical physics and radio engineering (VNIIFTRI);&#13;
M.V. Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт физико-технических и радиотехнических измерений</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian metrological institute of technical physics and radio engineering (VNIIFTRI)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>09</day><month>08</month><year>2023</year></pub-date><volume>0</volume><issue>8</issue><fpage>8</fpage><lpage>16</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/1930">https://www.izmt.ru/jour/article/view/1930</self-uri><abstract><p>Описан состав и метрологические характеристики Государственного первичного эталона единицы температуры – кельвина – в диапазоне от 0,3 до 273,16 К ГЭТ 35-2021. ГЭТ 35-2021 позволяет воспроизводить и передавать единицу температуры в соответствии с определением кельвина, принятым в 2018 г. на 26-й Генеральной конференции по мерам и весам. В состав ГЭТ 35-2021 введены разработанные в 2012–2019 гг. установки акустической газовой термометрии – первичные средства измерений температуры в диапазонах 79–273,16 К; 4,2–80 К; 268,16–273,16 К. Для повышения точности воспроизведения действующей температурной шкалы МТШ-90 усовершенствована аппаратура воспроизведения реперных точек шкалы. На основании проведённых исследований рассчитана неопределённость воспроизведения термодинамической температуры и температуры по шкале МТШ-90.</p></abstract><trans-abstract xml:lang="en"><p>Description and metrological characteristics are presented of upgraded in 2021 equipment of National primary state standard of temperature on the temperature range from 0.3 K to 273.16 K GET 35-2021. GET 35-2021 allow to to the reproduce and disseminate the unit of temperature according to its definition accepted on 26th CGPM in 2018. Three installations of acoustic gas thermometry developed in 2012–2019 have been introduced in the National primary state standard covering ranges 79–273.16 K, 4.2–80 K, 268.16–273.16 K. The equipment for reproduction of fixed points of of International Temperature scale ITS-90 has been upgraded for uncertainty reduction. Uncertainty of reproduction of thermodynamic temperature and temperature according to ITS-90 have been calculated on the basis of investigations of upgraded equipment.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>кельвин</kwd><kwd>термодинамическая температура</kwd><kwd>акустическая газовая термометрия</kwd><kwd>международная температурная шкала</kwd><kwd>тройная точка</kwd><kwd>платиновая термометрия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>kelvin</kwd><kwd>thermodynamic temperature</kwd><kwd>acoustic gas thermometry</kwd><kwd>international temperature scale</kwd><kwd>triple point</kwd><kwd>platinum thermometry</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">Steur P. P. M., Durieux M., Metrologia, 1986, vol. 23, pp. 1–18. https://doi.org/10.1088/0026-1394/23/1/002</mixed-citation><mixed-citation xml:lang="en">Steur P. P. 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