OIML R 87: Metrological requirements (1) Average requirements: On average, the quantity in prepackages shall at least be equal to the nominal quantity Q nom (2) Individual requirements: Only a small percentage of the prepackages (typ. 2.5 %) are allowed to have a quantity between (
Note: R 87 covers only prepackages of equal nominal content ! Individual requirements: Only a small percentage of the prepackages (typ. 2.5 %) are allowed to have a quantity between (Qnom – 2T) and (Qnom – T), called T1 error. Only a small amount of prepackages (typ. 2.5 %) are allowed to show deficiences between T1 and T2.
A 3rd CD of OIML R 87 will be prepared and distributed to the IWG by December 2001. The next draft will include an informative annex describing the statistical basis of R 87 that was prepared by Alain Duran of France. Questions?