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Title: Data Acquisition By Analog Computer
Author: G. D. Bogel
Source: 1970 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1970
Abstract: Historically large volume flow measurement has been accomplished by orifice meter, with round chart gauges as recording devices. These charts are collected daily by the seller of the gas. The charts are examined for average pressure and temperature. The supercompressibility and gravity factors are obtained from tables, then the differential pressure chart is integrated and this integral multiplied by the various other factors.