ESTABLISHMENT OF FORCE STANDARDS IN KOREA UP TO 2 MN BY HYDRAULIC FORCE STANDARD MACHINE

摘要

The force unit generated by the 2 MN hydraulic force standard machine in KRISS was changed to Newton from kilogram-force. This paper describes the estimation of the hydraulic force standard machine. First, the machine was compared with a 500 kN deadweight force standard machine in KRISS. The relative deviation between two force machines was less than 2×10~(-5). In order to estimate the hydraulic force machine in the whole range, we made an intercomparison with a 2 MN deadweight force standard machine in PTB. Intercomparison test revealed that the relative deviation between the KRISS hydraulic force machine and the PTB deadweight force machine is less than 8.1×10~(-5) in the range of 400 kN to 2000 kN.