Abstract：The inner volume of a 1000L bell prover is measured by a new facility. A chord length measuring element is made up of two length gauges and a rotating arm. The whole volume of the bell is measured off 256 cross sections with axially equal spacing, and the spatial coordinates of the points, at which length gauges contact the bell’s inner wall,are obtained with a sampling interval of 15° to reproduce every section profile. A new sweep method is introduced to calculate the areas of section profiles. The comparison with the method for the assessment of departure from roundness shows that the results of the two methods coincide with each other when small sampling interval is adopted. A data sheet for all element volumes along bell axial is presented as calibration result.
刘夷平,宋进,许尧,全晓军. 钟罩式气体流量标准装置内部容积的测量方法[J]. 计量学报, 2016, 37(6): 615-618.
LIU Yi-ping,SONG Jin,XU Yao1,QUAN Xiao-jun. A Method for Measurement of the Inner Volume of Bell Prover. Acta Metrologica Sinica, 2016, 37(6): 615-618.
2016, Vol. 37 
