Orifice meters for liquid measurement
- P.E. Vickrey Engineering, Inc., Dallas, TX (United States)
Orifice meters have been used for centuries in measuring and regulating the flow of water. Historians have recorded the use of orifices by the Romans to regulate the flow of water to houses. Equations used to calculate gas flow rate were originally based on data using water. Although orifice meters are used extensively today by the gas Transmission industry for measuring large quantities of gas in custody transfer, they are also used for the measurement of natural gas liquids such as ethylene, carbon dioxide raw mix, demethanized ethane-propane mix, oil, water, air and steam. An ORIFICE METER consists of a thin flat round plate in which a circular concentric bore with a sharp square edge has been machined and mounted two flanges, each attached to a tube, or an orifice-plate holder with a pressure tap upstream and a pressure tap downstream to provide a means of measuring the pressure drop across the orifice plate. These parts, when assembled as a unit, are the METER and it is called the Primary Element. Occasionally a chart recorder is called a meter but that is not correct. Other instruments used in conjunction with the meter to record or transmit line pressure, differential pressure, temperature, relative density, etc. are the Secondary Elements.
- OSTI ID:
- 146274
- Report Number(s):
- CONF-950553-; TRN: 95:007831-0036
- Resource Relation:
- Conference: International school of hydrocarbon measurement, Oklahoma City, OK (United States), 16-18 May 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the seventieth International School of Hydrocarbon Measurement; PB: 811 p.
- Country of Publication:
- United States
- Language:
- English
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