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Title: New Concepts In Industrial Regulators
Author: Harold F. Kruzan
Source: 1969 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1969
Abstract: With increasing growth in population, the gas utility distribution system experiences greater deviations in system pressures. At the same time, there is increasing pressure on the utility for more accurate measurement of gas sold to industrial customers. The very nature of a pressure regulator is such that its outlet pressure will vary in some proportion to inlet pressure fluctuations. Coupled with this is the desire of many utility companies to measure gas supplied to industrial customers at high pressure (2 p.s.i. to 20 p.s.i.) which permits the use of smaller, less expensive meters. In this metering pressure range, the use of constant pressure factors is common. However, the metering pressure must be extremely accurate or the pressure factor will not provide accurate measurement. For example, if the metering pressure is 10 p.s.i. and the pressure deviates 0.5 p.s.i., a 2% error in measurement is experienced (Figure 1).

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