IMPLEMENTATION OF A GENERAL LEAST SQUARES METHOD IN MASS MEASUREMENTS

We present a new software product (DFM Calibration of Weights) developed at Danish Fundamental Metrology (DFM), which has been implemented in mass measurements. This product is used for designing the mass measurements, acquiring measurement data, data analysis, and automatic generation of calibration certificates. Here we will focus on the data analysis, which employs a general method of least squares to calculate mass estimates and the corresponding uncertainties. This method provides a major simplification in the uncertainty calculations in mass measurements, and it allows a complete analysis of all measurement data in a single step. In addition, we present some of the techniques used for validation of the new method of analysis.