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Title: Orifice Fittings And Meter Tubes
Author: Jack D. Muff
Source: 1965 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1965
Abstract: The efficiency and accuracy of an orifice meter set up depends largely upon the care with which the orifice fitting and meter tube are installed and maintained. To give sensible care to any mechanical device, it is necessary to be familiar with the design and principles of its operation. This paper will attempt to cover enough of the description of orifice fittings and meter tubes that the user of such equipment will be able to use it with the greatest accuracy and still not find it necessary to spend excessive time in maintenance work. Investigations conducted by the Gas Measurement Committee of the American Gas Association show that conditions in the pipeline upstream and downstream from the orifice plate influence metering accuracy. These conditions are controlled by the meter tube and straightening vane. Discussion of these factors will be found in this paper under the heading METER TUBES.

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