Dead Weight Force Machines Comparison within the Interamerican Metrology System (SIM), up to 150 kN

摘要

A force comparison was carried out within the Interamerican Metrology System (SIM), in order to estimate the level of agreement for the realisation of the quantity, and the uncertainty associated to its measurement. The comparison participants were the National Metrology Institutes (NMI's) from SIM with dead weight machines: United States of America, Brazil and Mexico. The comparison was carried out up to 150 kN, using a load cell as the standard, having 1·10~(-5) relative repeatability. The "Centro Nacional de Metrologia" (CENAM), in Mexico, was the co-ordinator and pilot laboratory. The results obtained, deviations graph including the uncertainty for each participant laboratory are presented in this document.