Force inter-comparison between China and Italy

The paper descriptes the inter-comparison of two force primary standards of 1 MN DWMs established by National Institute of Measurement and Testing Technology (NIMTT), Chengdu, China, and Istituto Nazionale di Ricerca Metrologica(INRIM), Torino , Italy. It was tested that the temperature coefficients of the two cells as transfer standard, and their long-term stability. There were results on the deviation of force generated by the two DWMs as well as their normalized error.