Measurements of coefficients of discharge for concentric flange-tapped square-edged orifice meters in natural gas over the Reynolds Number range 25,000 to 16,000,000. Technical note (Final)

The report describes the data acquisition systems and procedures used in the American Petroleum Institute (API)-sponsored orifice discharge coefficient project performed in natural gas flows and conducted at the test loop of the Natural Gas Pipeline Company of America (NGPL) in Joliet, Illinois. Measurements of orifice discharge coefficients for 6- and 10-inch diameter orifice meter runs were made…