2. MPE

For static loads under rated operating conditions, the MPE for reference accuracy class Ref(x), shall be 0,312 of the maximum permissible deviation of each fill from the average; as specified in Table 5; multiplied by the class designation factor (x). For instruments where the fill may be made up from more than one load (e.g. cumulative or selective combination weighers) the MPE for static loads shall be the accuracy required for the fill as specified in point 2.2 (i.e. not the sum of the maximum permissible deviation for the individual loads). Table 5 Value of the mass, m (g), of the fills Maximum permissible deviation of each fill from the average for class X(1) m ≤ 50 7,2 % 50 < m ≤ 100 3,6 g 100 < m ≤ 200 3,6 % 200 < m ≤ 300 7,2 g 300 < m ≤ 500 2,4 % 500 < m ≤ 1000 12 g 1000 < m ≤ 10000 1,2 % 10000 < m ≤ 15000 120 g 15000 < m 0,8 % Note: The calculated deviation of each fill from the average may be adjusted to take account for the effect of material particle size. For instruments where it is possible to pre-set a fill weight; the maximum difference between the pre-set value and the average mass of the fills shall not exceed 0,312 of the maximum permissible deviation of each fill from the average, as specified in Table 5.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-06 · Text as adopted (Official Journal); later amendments are not incorporated in this text.