EMUE-RMG-2-Pressure drop measurement

Pressure Drop Measurement

This example demonstrates how correlations can sometimes be removed from an uncertainty evaluation by modifying the measurement equation so that strongly correlated quantity estimates do not appear together. This is demonstrated by an example considering the pressure drop in a pressurised vessel, in which the effect of correlation between temperature measurements is removed.  In this example the uncertainty associated with an estimate of pressure drop is appreciably smaller when correlation is taken into consideration.

Files contained in dataset are:

EMUE-RMG- Pressure drop measurement – UKAS.pdf,

EMPIR.jpg- figure file,

EMUELogo-03.jpg- figure file,

Example_A.tex: LaTeX file to be compiled in order to produce EMUE-RMG- Pressure drop measurement – UKAS.pdf,

MCMandGUMnewWithCorr.jpg: figure file,

MCMandGUMnewWithoutCor.jpg: figure file,

reference.bib: bibliography file,

Compendium.bib: bibliography file,

GUM_WithCorrelations.mat /GUM_WithoutCorrelations.mat: MATLAB function that calculates measurement uncertainty by following the GUM principle (with or without correlations),

GUMSupp1_WithCorrelations.mat /GUMSupp1_WithoutCorrelations.mat: MATLAB function that calculates measurement uncertainty by following GUM Supplement 1 principle (with or without correlations),

InputData_WithCorrelations.mat /InputData_WithoutCorrelations.mat: MATLAB function for input data (with or without correlations),

PlotGUM_WithCorrelations.mat /PlotGUM_WithoutCorrelations.mat: MATLAB function for plotting the results (with or without correlations),

PlotGUMAndMCM_WithCorrelations.mat /PlotGUMAndMCM_WithoutCorrelations.mat: MATLAB function for plotting the results (with or without correlations),

Results_WithCorrelations.mat /Results_WithoutCorrelations.mat: MATLAB function for displaying the results (with or without correlations),

SetFormattingSymbols_WithCorrelations.mat /SetFormattingSymbols_WithoutCorrelations.mat: MATLAB function for setting formatting symbols,

UKASPressureDropExample_WithCorrelations.mat /UKASPressureDropExample_WithoutCorrelations.mat: Model developed in MATLAB that calculates estimated pressure drop and the associated measurement uncertainty (GUM and Monte Carlo method). One file calculates the uncertainties with and the other without correlations. These files use MATLAB functions (developed for this example) that are listed above: SetFormattingSymbols, InputData, GUM, GUMSupp1, Results,  PlotGUMAndMCM,  PlotGUM.