Method of kurtosis in estimating the measurement uncertainty during calibration of the electrical resistance measures using a potentiometer

Calibration of electrical resistance measures is considered by the indirect method, which realized through measuring voltage drop across series-connected reference and calibrated resistors. The biases estimates measurand combined standard uncertainty due to nonlinearity measurement model were calculated. distribution laws input quantities in calculation expanded taken into account kurtosis method. An example evaluating during calibration single-size measure R331 with a nominal 1000 Ω comparing its value using potentiometer R345 considered. Estimates uncertainties obtained proposed method showed good agreement Monte Carlo