RI 6824 Calibration Of A Rotating Piston Deadweight Gage By Means Of A Mercury Column Less Than 1 Meter High - Significance Of Piston Constants And Their Applications

Rotating piston deadweight gages have been used for many years for measurement of pressure to several hundred atmospheres. They have been calibrated by comparison of fluid pressures produced by various loads bearing on the piston bases, as measured by corresponding heights of balancing columns of mercury. When expressed in appropriate units, these ratios of column heights to piston loads are called piston constants. Experimental arrangements and procedures for their determination are presented in this paper, followed by a discussion of their significance and of their subsequent applications.