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Title: Spot Sample Method Comparison : Fill - And - Empty V Ersus Helium Pop
Author: Tom Cleveland
Source: 2016 Natural Gas Sampling Technology Conference
Year Published: 2016
Abstract: The process of capturing a representative spot gas sample subsequently taken back to a laboratory for chromatographic analysis has always been a challenge when it comes to minimizing uncertainty. There are so many aspects of this process that can contribute to increased uncertainty. The i ncrease in uncertainty translates t o increased risk that the relative density value will be misrepresented and result in an inaccurate volume calculation. Couple d with the potential error in the volume calculation, a more pronounced error may be experienced with the energy calculation, as the BTU factor is a direct multiplier to the calculated volume. Industry standards organizations have sponsored research over the decades and published technical standards such as Gas Processors Association ( GPA ) 2166 - Obtaining Natural Gas Samples for Analysis by Gas Chromatography to provide guidance in minimizing uncertainty

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