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Title: ADVANCED APPLICATION OF ROTARY METERS
Author: Ron Walker
Source: 2022 Appalachian Gas Measurement Short Course
Year Published: 2022
Abstract: This paper will examine and explain several common characteristics of rotary meters and their use in the natu- ral gas distribution, transmission and production markets. The selection, proper installation, start-up procedures and regular maintenance routines will be covered, as well. ROTARY METER OPERATING PRINCIPLE As gas flows through a rotary meter the impellers turn, trapping known volumes of gas. This measuring chamber and impellers are constructed of hard coated anodized aluminum to offer strength and resistance to damage from gas flow debris. For the purposes of this paper it is impor- tant to note that the impellers and cylinder do not touch each other and are separated by gaps that measure an average of .003. As a meter begins to increase its speed this gap creates a fluidic seal so that any slippage (un- measured gas), is confined to very low flow rates.

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