IEC 60584-1-ed.3.0

Detail information

Designation: IEC 60584-1-ed.3.0

Publication date: 28/08/2013

Pages: 136

Country: International technical standard

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Anotation

IEC 60584-1:2013 specifies reference functions and tolerances for letter-designated thermocouples (Types R, S, B, J, T, E, K, N, C and A). Temperatures are expressed in degrees Celsius based on the International Temperature Scale of 1990, ITS-90 (symbol t90), and the EMF (symbol E) is in microvolts. The reference functions are polynomials which express the EMF, E in V, as a function of temperature t90 in °C with the thermocouple reference junctions at 0 °C. Values of EMF at intervals of 1 °C are tabulated in Annex A. This third edition cancels and replaces the second edition published in 1995 and constitutes a technical revision. It includes the following changes: - IEC 60584-1:1995 and IEC 60584-2:1982 have been merged; - the standard is now explicitly based on the reference polynomials which express thermocouple EMF as functions of temperature. The tables derived from the polynomials are given in Annex A; - inverse polynomials expressing temperature as functions of EMF are given in Annex B, but inverse tables are not given; - the range of the polynomial relating the EMF of Type K thermocouples is restricted to 1 300 °C; - values of the Seebeck coefficients are given at intervals of 10 °C; - thermoelectric data (EMF and Seebeck coefficients) are given at the fixed points of the ITS-90; - some guidance is given in Annex C regarding the upper temperature limits and environmental conditions of use for each thermocouple type. La CEI 60584-1:2013 specifie les fonctions de reference et les tolerances associees aux couples thermoelectriques designes par une lettre (Types R, S, B, J, T, E, K, N, C et A). Les temperatures y sont exprimees en degres Celsius selon lEchelle Internationale de Temperature de 1990, EIT-90 (symbole t90) et les FEM (symbole E), en microvolts. Les fonctions de reference sont des polynomes qui expriment la FEM, E en V, en fonction de la temperature t90 en °C, les jonctions de reference des couples thermoelectriques etant placees a 0 °C. LAnnexe A presente, sous forme de tableau, les valeurs de la FEM tous les 1 °C. Cette troisieme edition annule et remplace la deuxieme edition parue en 1995. Elle constitue une revision technique. Elle inclut les modifications suivantes: - les CEI 60584-1:1995 et CEI 60584-2:1982 ont ete fusionnees; - la norme repose desormais de maniere explicite sur les polynomes de reference qui expriment la FEM des couples thermoelectriques en fonction de la temperature. LAnnexe A donne les tables derivees des polynomes; - lAnnexe B donne les polynomes inverses, qui expriment la temperature en fonction de la FEM, mais ne donne pas les tables inverses; - le domaine de temperature du polynome exprimant la FEM des couples thermoelectriques de Type K est limite a 1 300 °C; - la valeur du coefficient de Seebeck est donnee tous les 10 °C; - les donnees thermoelectriques (FEM et coefficients de Seebeck) sont fournies aux points fixes de lEIT-90; - lAnnexe C donne des lignes directrices concernant les limites superieures de temperature et les conditions denvironnement lors de lutilisation de chaque Type de couple thermoelectrique.