AN INTERACTIVE APPLICATION FOR COMPARISON OF FIT APPROACHES IN BALANCES PRESSURE CALIBRATION

M. Morales, S. Higuera

Abstract

The calibration of a pressure balance implies to determine the values of the zero-pressure effective area <i>A</i>₀ and the pressure distortion coefficient <i>λ</i> that defines the piston-cylinder assembly effective area <i>A</i>_pi. In order to analyze this behavior, this work compares the method of ordinary least squares with the generalized least squares and weighted least squares to calculate the contributions to type A uncertainty, in particular the residual deviation. For this purpose, an interactive application has been built in R- Shiny, which allows for getting the results mentioned.

Keywords

ordinary least squares (OLS); weighted least squares (WLS); generalized least squares (GLS); pressure balances; interactive application

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IMEKO-TC16-2022-037.pdf

DOI

10.21014/tc16-2022.037

IMEKO TC

TC16 - Pressure and Vacuum Measurement

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