|MetCalUncertCalc.pdf||Implementing ISO 17025 Measurement Uncertainty Requirements
Staff Software Engineer
ISO/DIS 17025, "General Requirements for the Competence of Testing and
Calibration Laboratories, states that "calibration certificates shall
contain the measurement results including the measurement uncertainty".
What is meant by that? Is it simply a Test Uncertainty Ratio (TUR)
calculation, or are there other factors involved? Using the "Guide to the
Expression of Uncertainty in Measurement", it certainly is more than a TUR
calculation. This paper describes the implementation of the measurement
uncertainty calculation in an automated calibration software package.
Compliance with ISO/DIS 17025 is discussed.