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Title: Uncertainty Analysis Based On Historical Data
Author: Calum Hardie,
Source: 2013 North Sea Flow Measurement Workshop
Year Published: 2013
Abstract: Uncertainty analyses are essential to determine whether measurement systems are capable of meeting performance targets. They are also used to help develop maintenance and calibration schedules. When developing uncertainty budgets for new measurement systems however it is difficult to obtain reliable data to provide evidence. In many cases manufacturers estimates of uncertainty are used along with engineering judgement. These techniques are permitted in guidance documents such as the Guide to the expression of Uncertainty of measurement (GUM)1 and ISO 5168: 20033. To improve the analysis over time these uncertainty budgets should be updated with real data from calibrations and verifications of the measurement system. This data can also be used to improve maintenance and calibration schedules

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