Interpretation of hydraulic testing machine with open loop control and evaluation and analysis of measurement uncertainty
According to the interpretation of JJG 139-2014 Verification Regulation of Tension,Pres-sure and Universal Testing Machines,this regulation is applicable to the verification or calibration of open-loop controlled testing machines.In order to facilitate the understanding and operation of verification or calibration personnel,this paper mainly introduces the differences between open-loop controlled tes-ting machines.Combined with work practice,the 0.3 level standard force measuring instrument standard device is used to calibrate the relevant force points of open-loop controlled testing machines,Then the measurement results are evaluated and verified for uncertainty.
NETL
NSTL
万方数据
