Precision measuring device for force standard machine, force value comparator and force standard instrument

摘要

The present invention relates to a precision test apparatus for a force standard machine, wherein the precision test apparatus (1) comprises a first hydraulic cylinder (2), a pipeline (6) and a force loading device, 1 In the hydraulic cylinder (2), a liquid medium is installed and the liquid medium area is known; Wherein the pipeline (6) is hollow tubular, the first end of the pipeline (6) communicates with the liquid medium in the first hydraulic cylinder (2); The force-loading device acts on the liquid medium in the first hydraulic cylinder (2) so that the liquid medium causes an increase in pressure or an increase in overwhelming. The present invention further provides a force value comparator and force standard instrument accuracy detection method.