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Title: Chart Integration And Calculation
Author: 0. E. Hannesschlager
Source: 1968 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1968
Abstract: Gas is hard to measure. It is not a solid, so it cannot be measured with a ruler. Neither is it a liquid, so it cannot be measured with a bucket. Because of this, the science of measuring gas is imjch more complex than the man on the street would suspect. Generally, gas is measured either by weight or by volume. Of the two, volume is by far the most commonly used method of measurement in the gas industry. The basic unit is the cubic foot. However, this term cubic foot must be qualified by standards exactly describing the conditions of pressure and temperature under which this cubic foot exists. Then gas is measured in the field, it usually exists under conditions of pressure Etnd temperature different from a standard cubic foot. Go, certain rules of order must be followed in order to convert the measured cubic foot to the standard cubic foot. This conversion is not too difficult when positive displacement meters are used. However, when large volumes of gas are measured and when orifice meters are used, the factors Involved ore numerous and complicated.

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