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The International Temperature Scale of 199 … The International Temperature Scale of 1990 (ITS-90) is an equipment calibration standard specified by the International Committee of Weights and Measures (CIPM) for making measurements on the Kelvin and Celsius temperature scales. It is an approximation of thermodynamic temperature that facilitates the comparability and compatibility of temperature measurements internationally. It defines fourteen calibration points ranging from 0.65 K to 1357.77 K (−272.50 °C to 1084.62 °C) and is subdivided into multiple temperature ranges which overlap in some instances.ITS-90 is the most recent of a series of International Temperature Scales adopted by the CIPM since 1927.Adopted at the 1989 General Conference on Weights and Measures, it supersedes the International Practical Temperature Scale of 1968 (amended edition of 1975) and the 1976 "Provisional 0.5 K to 30 K Temperature Scale". The CCT has also published several online guidebooks to aid realisations of the ITS-90.The lowest temperature covered by the ITS-90 is 0.65 K. In 2000, the temperature scale was extended further, to 0.9 mK, by the adoption of a supplemental scale, known as the Provisional Low Temperature Scale of 2000 (PLTS-2000). In 2019, the kelvin was redefined. However, the alteration was very slight compared to the ITS-90 uncertainties, and so the ITS-90 remains the recommended practical temperature scale without any significant changes. It is anticipated that the redefinition, combined with improvements in primary thermometry methods, will phase out reliance on the ITS-90 and the PLTS-2000 in the future.he ITS-90 and the PLTS-2000 in the future.
, 国际实用温标，是一个国际协议性温标，它与热力学温标相接近，而且复现精度高，使用方便。国际计量委员会在18届国际计量大会第七号决议授权予1989年会议通过了1990年国际温标。
, Obsahuje definici jednotky teploty (Kelvin, stupeň Celsia) a 17 teplotních bodů látek (trojný bod, tání, var, ...) a metody ověřování (cejchování) teploměrů.
, Die Internationale Temperaturskala von 199 … Die Internationale Temperaturskala von 1990 (International Temperature Scale of 1990: ITS-90) wurde 1989 vom Internationalen Komitee für Maß und Gewicht (CIPM) verabschiedet. Sie definiert Temperaturen in den Einheiten Kelvin und Grad Celsius und unterstützt die Vergleichbarkeit und Kompatibilität von Temperaturmessungen. Sie wird benötigt, da die Messung der thermodynamischen Temperatur mittels eines Primärthermometers sehr kompliziert und zeitaufwendig ist. Im Gegensatz dazu ist die Temperaturbestimmung mit Sekundärthermometern einfacher. Allerdings müssen diese kalibriert werden, was die ITS-90 ermöglicht.ibriert werden, was die ITS-90 ermöglicht.
, L’Échelle internationale de température de … L’Échelle internationale de température de 1990 (en anglais, International Temperature Scale of 1990 : ITS-90) est une norme d’étalonnage des matériels destinés à la mesure des températures dans les échelles Kelvin et Celsius, édictée dans le cadre du système SI. ITS-90 a pour objet d’établir les conditions de mesure de la température thermodynamique et de faciliter la compatibilité des résultats au niveau international. Elle définit des points d’étalonnage des instruments de mesure pour des températures comprises entre 0,65 K et environ 1 368 K (de −272,5 °C à 1 085 °C). Elle subdivise cette gamme de températures en régions qui se recouvrent partiellement. L’intitulé « Échelle internationale de température de 1990 » peut être trompeur : il ne s’agit pas d’une échelle mais d’une norme d’étalonnage des appareils de mesure.orme d’étalonnage des appareils de mesure.
, La Escala Internacional de Temperatura ITS … La Escala Internacional de Temperatura ITS-90, esta escala fue adoptada por el Comité Internacional de Pesos y Medidas en su reunión de 1989. Las temperaturas son definidas en términos de los estados de equilibrio de fases de sustancias puras los cuales son llamados puntos fijos.uras los cuales son llamados puntos fijos.
, مقياس درجة الحرارة العالمي لعام 1990 (ITS- … مقياس درجة الحرارة العالمي لعام 1990 (ITS-90) عبارة عن تحديد نقاط ثابتة لتعيير مقياس درجة الحرارة بالكلفن والسيلزيوس. يعتمد هذا المقياس على نقاط ثابتة لدرجة الحرارة بناء على خواص ديناميكية حرارية، والهدف من ذلك إيجاد وسيلة تسهّل من مقارنة قياسات درجة الحرارة المختلفة حول العالم. يحدد مقياس درجة الحرارة العالمي نقاط معايرة تبدأ من 0.65 كلفن إلى 1358 كلفن (من −272.5 °س إلى 1085 °س). إلى 1358 كلفن (من −272.5 °س إلى 1085 °س).
, A Escala Internacional de Temperaturas de … A Escala Internacional de Temperaturas de 1990 (em inglês: International Temperature Scale of 1990: ITS-90) define temperaturas nas unidades kelvin e grau Celsius e auxilia na comparação e compatibilidade de medições de temperatura. Embora o kelvin seja definido como o zero absoluto (0 K) e o ponto triplo da água (273,16 K), não é prático usar esta definição para temperaturas que estão longe do ponto triplo da água, pois procedimentos correspondentes para determinar a temperatura absoluta são extremamente complexos e conectados com grande incerteza. A ITS-90 apresenta temperaturas específicas, os chamados pontos fixos (em sua maioria temperaturas de determinadas transições de fase de algumas substâncias), começando em 0,65 K (para cima), que no passado foram determinadas com um procedimento absoluto (incluindo termômetro de ruído, termômetro de gás, termômetro acústico, radiômetro). Entre esses valores de temperatura é feita interpolação (também raramente extrapolação) usando um definido termômetro, previamente calibrado nos pontos fixos. Para cobrir a escala completa é necessário: termômetro de pressão de vapor de hélio, termômetro de gás hélio, termômetro de termorresistência e termômetro de radiação monocromática. No meio há várias faixas de temperatura que se sobrepõem parcialmente, levando assim a uma ambiguidade inerente da escala (porque diferentes métodos e diferentes pontos fixos normalmente não indicam exatamente as mesmas temperaturas). Os valores padrão (os pontos fixos), nos quais a ITS-90 se baseia, fornecem apenas o padrão do ano 1990, e podem ser refinados em uma futura escala ITS XX (esperada para depois de 2010). Da mesma forma, a fórmula de interpolação e até mesmo os métodos de termometria podem ser adaptados, bem como é a ITS-90 uma evolução de suas antecessoras, a IPTS-68 e a EPT-76 (faixa de baixa temperatura). Assim como atualmente medições de precisão histórica podem ser convertidas uma na outra, a ITS-90 garante a rastreabilidade dos dados de temperatura em nosso tempo para o futuro, o que o método absoluto (ainda) não proporciona. A tabela a seguir mostra alguns dos valores da escala. Na faixa entre 3 K e 5 K respectivamente −270,15 °C a −268,15 °C não são usados pontos fixos, mas sim a pressão de vapor do hélio.ixos, mas sim a pressão de vapor do hélio.
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Obsahuje definici jednotky teploty (Kelvin, stupeň Celsia) a 17 teplotních bodů látek (trojný bod, tání, var, ...) a metody ověřování (cejchování) teploměrů.
, L’Échelle internationale de température de … L’Échelle internationale de température de 1990 (en anglais, International Temperature Scale of 1990 : ITS-90) est une norme d’étalonnage des matériels destinés à la mesure des températures dans les échelles Kelvin et Celsius, édictée dans le cadre du système SI. ITS-90 a pour objet d’établir les conditions de mesure de la température thermodynamique et de faciliter la compatibilité des résultats au niveau international. Elle définit des points d’étalonnage des instruments de mesure pour des températures comprises entre 0,65 K et environ 1 368 K (de −272,5 °C à 1 085 °C). Elle subdivise cette gamme de températures en régions qui se recouvrent partiellement.n régions qui se recouvrent partiellement.
, The International Temperature Scale of 199 … The International Temperature Scale of 1990 (ITS-90) is an equipment calibration standard specified by the International Committee of Weights and Measures (CIPM) for making measurements on the Kelvin and Celsius temperature scales. It is an approximation of thermodynamic temperature that facilitates the comparability and compatibility of temperature measurements internationally. It defines fourteen calibration points ranging from 0.65 K to 1357.77 K (−272.50 °C to 1084.62 °C) and is subdivided into multiple temperature ranges which overlap in some instances.ITS-90 is the most recent of a series of International Temperature Scales adopted by the CIPM since 1927.Adopted at the 1989 General Conference on Weights and Measures, it supersedes the International Practical Temperature Scale of 1968tional Practical Temperature Scale of 1968
, مقياس درجة الحرارة العالمي لعام 1990 (ITS- … مقياس درجة الحرارة العالمي لعام 1990 (ITS-90) عبارة عن تحديد نقاط ثابتة لتعيير مقياس درجة الحرارة بالكلفن والسيلزيوس. يعتمد هذا المقياس على نقاط ثابتة لدرجة الحرارة بناء على خواص ديناميكية حرارية، والهدف من ذلك إيجاد وسيلة تسهّل من مقارنة قياسات درجة الحرارة المختلفة حول العالم. يحدد مقياس درجة الحرارة العالمي نقاط معايرة تبدأ من 0.65 كلفن إلى 1358 كلفن (من −272.5 °س إلى 1085 °س). إلى 1358 كلفن (من −272.5 °س إلى 1085 °س).
, A Escala Internacional de Temperaturas de … A Escala Internacional de Temperaturas de 1990 (em inglês: International Temperature Scale of 1990: ITS-90) define temperaturas nas unidades kelvin e grau Celsius e auxilia na comparação e compatibilidade de medições de temperatura. Embora o kelvin seja definido como o zero absoluto (0 K) e o ponto triplo da água (273,16 K), não é prático usar esta definição para temperaturas que estão longe do ponto triplo da água, pois procedimentos correspondentes para determinar a temperatura absoluta são extremamente complexos e conectados com grande incerteza.mplexos e conectados com grande incerteza.
, Die Internationale Temperaturskala von 199 … Die Internationale Temperaturskala von 1990 (International Temperature Scale of 1990: ITS-90) wurde 1989 vom Internationalen Komitee für Maß und Gewicht (CIPM) verabschiedet. Sie definiert Temperaturen in den Einheiten Kelvin und Grad Celsius und unterstützt die Vergleichbarkeit und Kompatibilität von Temperaturmessungen. Sie wird benötigt, da die Messung der thermodynamischen Temperatur mittels eines Primärthermometers sehr kompliziert und zeitaufwendig ist. Im Gegensatz dazu ist die Temperaturbestimmung mit Sekundärthermometern einfacher. Allerdings müssen diese kalibriert werden, was die ITS-90 ermöglicht.ibriert werden, was die ITS-90 ermöglicht.
, La Escala Internacional de Temperatura ITS … La Escala Internacional de Temperatura ITS-90, esta escala fue adoptada por el Comité Internacional de Pesos y Medidas en su reunión de 1989. Las temperaturas son definidas en términos de los estados de equilibrio de fases de sustancias puras los cuales son llamados puntos fijos.uras los cuales son llamados puntos fijos.
, 国际实用温标，是一个国际协议性温标，它与热力学温标相接近，而且复现精度高，使用方便。国际计量委员会在18届国际计量大会第七号决议授权予1989年会议通过了1990年国际温标。
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| rdfs:label |
国际实用温标
, مقياس درجة الحرارة العالمي
, ITS-90
, Escala Internacional de Temperatura ITS-90
, Escala Internacional de Temperaturas de 1990
, International Temperature Scale of 1990
, Échelle internationale de température de 1990
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