COMPOSITE SAMPLING OF NATURAL GAS
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The object of any sampling procedure is to obtain a representative sample of hydrocarbons from the system under investigation. The factor that must be covered is the person chosen to physically take the spot sample, or install and maintain the sampling device. The thermo billing that is being used throughout the industry requires that all functions of gas measurement, including sampling, be done with considerable care and utilizing specific techniques. The sampling of natural gas has been discussed and studied for many years. Serious testing on the proper sampling methods has been done in a number of locations in the recent past. The continuous sampling system consists of a probe in the line, a sampling pump, a timing device, and a sample container. The ease of installation, simple maintenance and reduced cost make the continuous sampler an attractive alternative to spot sampling and/or continuous recording devices. The placement of the sample probe is important in all sampling applications.