石油大流量校正設備の不確かさ解析 : 第2報,質量計測に対する不確かさ解析(流体工学,流体機械)

概要

論文の詳細を見る
The uncertainty of mass measurement for the hydrocarbon flow calibration facility, which is a national standard of Japan, has been evaluated experimentally and analytically in detail in accordance with the "ISO Guide to the expression of uncertainty in measurement". The kerosene and light oil flow calibration rigs have a large weighing tank with a 10t weighing scale and a small tank with a 1t weighing scale, one of which is selected to measure the reference flow rate depending on the flow rates. The combined standard uncertainty is estimated to be between 2.7 and 7.7×10^<-5> which varies depending on the flowrate and used liquids. The main source of combined uncertainty of mass measurement at high flow rate is the correction factor for weighing scales. On the other hand, uncertainty due to the loss of oil caused by oil mist and vapor in the diverter and in the weighing tank is dominant to the uncertainty of mass measurement using the kerosene 10t weighing scale and 1t weighing scales at low flow rate.
社団法人日本機械学会の論文
2006-06-25