THE SOURCES OF UNCERTAINTY OF THE MEASUREMENT RESULT AS ELEMENTS OF THE MEASUREMENT PROCESS

Research objective – to facilitate the detection and determination of the contributing components associated with the sources of uncertainty in measurements across the full range of aspects of calibration, testing and inspection and process control. In the paper, based on the concept of the duality of measurement process – measurement result, the five elements of the measurement process ware divided and classified as base sources of uncertainty. Some relations with other references with more or less structured classifications of the sources of measurement uncertainty are exampled. The scientific contribution is the application of a universal approach to determine the sources of uncertainty before empirical or experimental assessment of their contribution. As a result of the study the initial analysis of the sources of uncertainty is unified and simplified by asking the question of the contribution to the measurement uncertainty of each of the well-defined and universal five element of the measurement process.