Published February 2022, Pg. 67-71

Section: Young scientists and specialists

UOT: 519.6:001.891.57

DOI: 10.37474/0365-8554/ 2022-02-67-71

Definition of uncertainty of temperature measured via thermocouple in various sources of errors

N.Sh. Iskenderov - “Oil-Gas Scientich Research Projeet Institute“

One of the most significant issues for researchers of thermodynamic temperature measurements is the evaluation of realiability of measurement results. Thus, while thermodynamic measuring of the temperature with thermocouples, it is essential to specify uncertainty before making decision on the reliability of measuring data during temperature measurements. The research surveys justified that uncertainty of the temperature specified via thermocouple is affected by the types of errors, such as the limits of division of the structure of data collection, the error of the compensation of reference junction, the error of temperature measurement based on the specification of tension and data variability as well. During the studies different experiments using HIOKI (LR8402-20) data registrator for the definition of data changes and the errors of compensation of reference node has been carried out, as well as the procedure of specification of temperature uncertainty including compensated node uncertainty is suggested.

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