Measurement uncertainty budget

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In measurement technology, a measurement uncertainty budget is an overview of the contributions to the measurement uncertainty of a measurement or series of measurements. According to DIN ISO 10012-1, the measurement uncertainty budget as part of the quality assurance system is a prerequisite for the accreditation according to ISO / IEC 17025 of laboratories that calibrate measuring equipment .


As part of a measurement uncertainty analysis, after the description of the measurement method and the establishment of the complete model equation for the measurement, an associated measurement uncertainty budget is presented. For this purpose, the knowledge of all input variables ( measured values , distribution function , standard uncertainties ) is used. From this analysis and especially the evaluation of the measurement uncertainty budget, the result value and its standard uncertainty, the coverage factor and the indication of the expanded measurement uncertainty can then be determined.

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Individual evidence

  1. Guideline DAkkS-DKD-R 4–3 sheet 1 Calibration of measuring equipment for geometrical measured quantities. (PDF) DAkkS German Accreditation Body, accessed on September 8, 2017 .