Dissemination of the Kilogram at METAS: Extended Method of Lagrange Multipliers for Air Buoyancy Correction

• Abstract:

  We present the current mathematical procedures at METAS for disseminating the kilogram. We compare the classical method for solving a linear system of equations of mass comparisons to the Lagrange multiplier method. In addition, we have studied the influence of redundancy in mass comparisons and found that the combined standard uncertainty can be reduced when using a redundant design matrix.
• Keywords:

  Kilogram, dissemination, Lagrange multipliers, centre of gravity correction
• Download:

  IMEKO-TC3-2017-049.pdf
• DOI:

  _unreg_tc3-2017.049

Event details:

• IMEKO TC:

  TC3
• Event name:

  TC3 Conference 2017 - Measurement facing new challenges!
• Title:

  23^rd Conference on the Measurement of Force, Mass and Torque (together with 4^th TC22 Conference on Vibration Measurement and 13^th TC5 Conference on the Measurement of Hardness)

• Place:

  Helsinki, FINLAND
• Time:

  30 May 2017 - 1 June 2017