Evaluation of measurement uncertainty is a highly specialized technical work in the field of metrology.In the process of examination of measurement standards,some concepts such as measurement uncertainty of instrument of measurement standard(or main supporting equipment),measurement standard,verification(or calibration)re-sults,and target measurement uncertainty are involved.Evaluation of these measurement uncertainties are easily con-fused or even misused,resulting in the inability to objectively,truthfully,and accurately express the measurement ability and level of measurement standards.To this end,the concepts,sources,evaluation methods,and precautions of these measurement uncertainties are analyzed deeply.Taking the verification device of the calibrators for railway switch offset rule of the highest measurement standard for railway as an example,the target measurement uncertainty is determined,and the measurement uncertainties of the instrument of measurement standard(or main supporting equipment),measurement standard,and verification(or calibration)results are evaluated,so that metrological tech-nicians can deeply understand and correctly calculate and evaluate these measurement uncertainties.
Examination of Measurement StandardMeasurement UncertaintyAnalysisEvaluation
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维普
