Transcription of Flowmeters - Gilson Eng
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Flowmeters - Gilson Eng
Flowmeters DIFFERENTIAL PRESSURE - ORIFICE where V2. = kinematic energy 2g The most commonly used flowmeter is the orifice meter. The orifice meter consists of two parts. As shown in Fig- Lz = potential energy due to gravity ure 1, they are the measurement orifice plate, which is in- P = potential energy due to static stalled in the process line, and the differential pressure transmitter, which measures the pressure developed across = density of fluid the orifice plate. There has been extensive research to de- u = internal energy in the fluid termine the operating characteristics of orifice meters. q = change in heat energy of the fluid The physical phenomenon of the orifice meter is described ws = shaft work done by the fluid by the Continuity equation and the Bernoulli equation. The continuity states that the mass entering a control volume For virtually all flow applications, this equation can be sim- is the same as the mass leaving the control volume.
Americas +1 215 646 7400 ext. 6613 Asia Pacific +65 299 6051 Europe +44 1935 706262 Reference - Flowmeters 305 Flowmeters DIFFERENTIAL PRESSURE - ORIFICE
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