The measuring instrument accuracy class as a measure of the Type B uncertainty

摘要

The evaluation of Type B uncertainty is done by means of scientific analysis based on all available information about possible variability of the quantity measured. In order to facilitate the obtaining of information helpful in the evaluation of Type B uncertainty, a new instrument metrological quality assessment method has been developed, which relies exclusively on the random model. The assessment result, in the form of an instrument accuracy class, can be used for estimation of the Type B uncertainty as presented in the accompanying examples.