Wet Gas Flowmetering Guideline
ASME MFC-19G–2008
This Technical Report discusses the existing definitions of “wet gas flow” and provides suggested
definitions for use. Common wet gas flowmetering terminologies, principles, and limitations of the
available wet gas meter technologies are also discussed.
Wet gas flowmetering is an important flow measurand in many industries. If a relatively small volume of liquid is present in a gas it is generally said to be “wet.” Wet gas flows are not new occurrences in industry (e.g., wet saturated steam flows have been produced since the industrial revolution) but it is only recently that attempts to meter wet gas flows (e.g., by the oil and gas industry) with improved and a perhaps better understood uncertainties have been made. Measurement techniques are being continuously developed but accepted single-phase (dry) gas meter uncertainty is as yet not attainable when a wet gas flow is present. Due to the difficulties involved in wet gas metering it is unlikely that the same level of uncertainty seen with single-phase gas metering will be achieved in the foreseeable future.
ASME MFC-19G–2008
This Technical Report discusses the existing definitions of “wet gas flow” and provides suggested
definitions for use. Common wet gas flowmetering terminologies, principles, and limitations of the
available wet gas meter technologies are also discussed.
Wet gas flowmetering is an important flow measurand in many industries. If a relatively small volume of liquid is present in a gas it is generally said to be “wet.” Wet gas flows are not new occurrences in industry (e.g., wet saturated steam flows have been produced since the industrial revolution) but it is only recently that attempts to meter wet gas flows (e.g., by the oil and gas industry) with improved and a perhaps better understood uncertainties have been made. Measurement techniques are being continuously developed but accepted single-phase (dry) gas meter uncertainty is as yet not attainable when a wet gas flow is present. Due to the difficulties involved in wet gas metering it is unlikely that the same level of uncertainty seen with single-phase gas metering will be achieved in the foreseeable future.
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