Matrix Presentation of Uncertainties Propagation in the Realization of ITS-90 Temperature Scale using Standard Platinum Resistance Thermometers

Autor: Palenčár Rudolf, Ďuriš Stanislav, Palenčár Jakub, Halaj Martin, Šooš Ľubomír
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Measurement Science Review, Vol 20, Iss 2, Pp 73-79 (2020)
Druh dokumentu: article
ISSN: 1335-8871
DOI: 10.2478/msr-2020-0010
Popis: The paper presents a matrix approach to the propagation of uncertainties in the realization of the ITS-90 using Standard Platinum Resistance Thermometers (SPRT) calibrated at Defining Fixed Points (DFPs). The procedure allows correlations to be included between SPRT resistances measured during the calibration at the DFPs (i.e., the realization of the ITS-90) and the resistances measured during the subsequent use of the SPRT to measure temperature T90. The example also shows the possible contribution of these correlations to the overall temperature uncertainty measured by a calibrated SPRT.
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