LNE Uncertainty: software for evaluating measurement uncertainties V1.1

LNE Uncertainty

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The main function

LNE Uncertainty is a freeware software that evaluates the measurement uncertainty by the propagation of variances and/or propagation of distributions using Monte Carlo simulations. These methods are described in the Guide to the Expression of Uncertainty in Measurement (GUM) and its Supplement 1 (GUM S1), respectively.

Developed by the Laboratoire National de Métrologie et d'Essais, LNE Uncertainty is written in MATLAB® and runs under Microsoft® Windows (tested under Windows 7, 8, and 10). It requires the prior installation of  MRC INSTALLER R2023b (23.2) 64 bits.

LNE Uncertainty est un gratuiciel.

Additional features

In addition to the evaluation of the uncertainty of measurement by the GUM and GUM S1 methods, LNE Uncertainty allows to:

• verify the validity of the results obtained with the GUM method according to the criteria described in the GUM Supplement 1;
• construct an uncertainty budget by performing a sensitivity analysis using two methods: Spearman rank correlation coefficients and Sobol indices;
• process numerous output quantities simultaneously. The user can consult GUM Supplement 2 for the concept of multiple measurands;
• determine the output quantity's distribution by checking with the Kolmogorov-Smirnov test the adequacy of different theoretical distributions: Normal, Student, Log-Normal, Gamma, Beta, Uniform, Exponential ...

In addition, to enhance the user experience, LNE Uncertainty incorporates the values of fundamental physical constants and their associated uncertainties (CODATA 2018).

Release Note LNE Uncertainty v1.1

• Add LaTeX Formula display to the end-users when writing the measurement model
• Allow to save/load the measurement model only
• Delete GUM Model option in step 2
• Setup end-users OS language at startup
• Add supported languages: French, English, Spanish, Italian, German and Portuguese
• Debug errors related to the use of the Constant distribution
• Modification of the display in the « Results »  tab and the html file
• Modification of the conclusion of the « GUM Validation » tab
• Minor BUG corrections

Demonstration of LNE Uncertainty

Watch the demonstration video to find out how to use the LNE Uncertainty software, using a practical example.

Documentation