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Title: ADVANCED APPLICATION OF ROTARY METERS
Author: Ron Walker
Source: 2019 Appalachian Gas Measurement Short Course
Year Published: 2019
Abstract: This paper will examine and explain several common characteristics of rotary meters and their use in the natural 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 ows 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 ow debris. For the purposes of this paper it is important 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 uidic seal so that any slippage (unmeasured gas), is conned to very low ow rates.

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