The known procedures for capability analyses and the capability of measuring systems and measurement processes are conducted over a period of several minutes up to several hours. However, the results are only “short-term conclusions” and do not give any information about the long-term behaviour of the determined values.
In order to gain profound information, the required inspections should be made several times over a reasonable, significant period. For further information about the estimation of uncertainty components see below Table.
this table gives notes and suggestions together with the associated references about how to determine the standard uncertainties from the respective influence factor.
reference of Long-term Analysis :VDA