Paper: The Fundamentals of Gas Volume Flow Measurement

The application of correct methods for determining the effect of pressure and temperature on the behavior of natural gas is essential in projects involving gas measurement. The gas compressibility factor may be neglected in gas calculations only at low pressures and high temperatures. This paper presents the basic equations, with example solutions, for determining the gas compressibility factor, the volumes occupied by a gas at different pressures and temperatures, and the flow of gas through pipelines as measured with an orifice meter.