Research and discussion on traceability of force values for large force standard machines

The precise measurement of large force values, especially those above 20 MN, has always been a difficulty to be urgently solved in China and abroad, and has not been solved yet. To solve this problem, this article provides a practical and feasible method for traceability and calibration of high-precision large range force values. Using the Pascal principle, a small range testing system with known accuracy is connected to the measured large range force standard machine through a pipeline, with a hydraulic cylinder system with known surface area at both ends. The accuracy of the large range force is accurately determined through sensitivity measurement, and this method can test the friction and other parameters of the hydraulic cylinder.