Неопределенность измерения температуры и разности температур с учетом корреляции
Abstract
The method for measurement uncertainty estimation in the working range of platinum resistance thermometer with taking into account the correlation of calibration uncertainties is considered in this paper. It is shown that if the sum of correlated uncertainties exceeds of uncorrelated, it is to calculate the measurement uncertainty using a linear interpolation. The uncertainty in the temperature difference measured with two thermometers calibrated with the same instruments can be considerably reduced at taking into account the correlation of the input values.
Keywords
resistance thermometer,
calibration method,
correlation,
set of thermometers,
temperature difference measurement,
interpolation equation
536.531: 519.685.4.08
About the Author
Н. Моисеева
Всероссийский научно-исследовательский институт метрологии им. Д. И. Менделеева,
С. Петербург
Russian Federation
Russian Federation
References
1. ГОСТ Р 8.624-2006. ГСИ. Термометры сопротивления из платины, меди и никеля. Методика поверки.
2. Guide to the Expression of Uncertainty in Measurement. 1st ed. Geneva, Switzerland: International Organization for Standardization, 1993;
3. Руководство по выражению неопределенности измерения. СПб: ВНИИМ им. Д. И. Менделеева, 1999.
Review
For citations:
. Izmeritel`naya Tekhnika. 2010;(11):41-44. (In Russ.)
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