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Title: Basic Instrumentation Of Distribution Meters
Author: D. R. Fulton
Source: 1983 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1983
Abstract: Distribution measurement commonly involves reading the meter index, usually once a month. This is normal practice whenever it is understood that the metering pressure or temperature does not vary to any degree between meter readings. But if line pressure fluctuates, or if regulators dont hold close to set pressure, then instrumentation should be used on the meter. This is also true when wide variations in gas temperature are experienced. For example, at 10 psig metering pressure, if the line pressure varies by only one psi, the measurement accuracy could be affected by as much as 4 percent. At 30 psig metering pressure, a one psi variation could affect metering accuracy by over 2 percent. Temperature variation has a similar effect on volume measurement. Each 5F change in the flowing temperature above or below the 60F base temperature will affect metering accuracy by approximately 1 percent. So it is important to use instrumentation on some distribution meters in order to account for variations in meter pressure and/or temperature. Usually these meters would be in service on industrial or commercial accounts.

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