OIML D 36 • Pipe provers for verification and calibration of measuring systems for liquids

5.9 Calculation of errors

The errors of the measuring system may be calculated either

  1. from the meter factor determined according to ISO 4267-2:1988, Clause 7, or

  2. from the following equations in which the second order terms are neglected:

    (1)

    (2)

    (3)

    (4)

    (5)

    (6)

    To obtain a more accurate result, the following equation can be used without neglecting the second order terms:

    (7)