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Title: Operation Of On-Line Chromatography
Author: Paul E. Kizer
Source: 1995 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1995
Abstract: On line gas chromatography is today being chosen more and more in the natural gas industry for monitoring of gas quality. The calculations of the gas volumes in modern electronic flow meters requires not only BTU5(A BTU, British Thermal Unit, is a measure of heat) information, but specific gravity, Mol. % CO2 and Mol. % N2 as well. In addition, the current AGA-8 supercompressibility equations also require a complete analysis for the detailed method of calculation of Fpy. Most natural gas custody transfer contracts today use MMBTU rather than MCF as the accounting units of gas transfer. Also, modern micro-packed columns are providing faster cycle times for time critical BTU measurement applications. For these realms mentioned above, and the fact that the installation requirements for chromatographs are less stringent than calorimetric methods, the use of gas chromatographs has become standard practice.

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