Evaluation of uncertainty in measuremen for capacity of spherical metal tankCHEN Man-xue Shantou Institute of Supervision and Test of Quality and Metrology, Shantou 515041, ChinaAbstract:This article evaluates the uncertainty of measurement results of measuring spherical metal tank capacity in accordance with JJG642-1990 V.R. of spherical metal tank capacity and JJF1059-1999 evaluation and expression of uncertainty in measurement. Spherical metal tank is measured by light tangent method, and the uncertainty of measurement results is calculated by analysing the centre distance,horizontal angle and left and right tangent distance to the top etc.This article could be a reference for people who is at working on measuring spherical metal tank capacity.[著者文摘]
