TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A form of gas or liquid flowmeter consisting of a diaphragm in which there is an orifice placed transversely across a pipe, the difference in pressure on the two sides of the diaphragm is a measure of flow velocity.  4, record 1, English, - orifice%20meter

Record number: 1, Textual support number: 1 CONT

An orifice meter is an inferential meter in which the fluid velocity and flowrate are inferred from the pressure drop occurring through the known area of an orifice plate. Specifically, orifice meter flow is calculated from the flowing gas pressure and temperature, differential pressure drop occurring across the restriction of the meter’s orifice plate, the meter geometry including the meter tube’s inside diameter and orifice plate bore, and the gas composition.  5, record 1, English, - orifice%20meter

Record number: 1, Textual support number: 1 PHR

Sharp-edged orifice meter.  3, record 1, English, - orifice%20meter

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Les méthodes utilisées sont en évolution permanentes. On utilise toujours le système classique des débitmètres à diaphragme ou à Venturi mais parallèlement aussi des compteurs volumétriques et les compteurs à turbine.  3, record 1, French, - d%C3%A9bitm%C3%A8tre%20%C3%A0%20diaphragme

Record number: 1, Textual support number: 1 OBS

diaphragme : Membrane ou plaque dont on utilise la déformation élastique pour connaître ou pour commander le mouvement d'un fluide en contact avec l'une de ses parois.  4, record 1, French, - d%C3%A9bitm%C3%A8tre%20%C3%A0%20diaphragme

Record number: 1, Textual support number: 1 PHR

Débitmètre à diaphragme à bord fin.  5, record 1, French, - d%C3%A9bitm%C3%A8tre%20%C3%A0%20diaphragme

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

When specifying a mass flow control system, the first consideration is whether the process will take place at constant system pressure, constant throughput, and/or predetermined gas flow ratio. Another important consideration is whether system control will be automatic(microprocessor) or manual(setpoint potentiometers).... There are three major state-of-the-art systems that can be identified. The first uses a flowmeter(s)... as the primary transducer(s) to monitor mass flow. Using this format, a signal is compared in control circuitry to a setpoint signal. This generates an error voltage which is used to drive a valve, thus continuously controlling the flow. The second major type of system uses a pressure transducer as the primary sensing element. System pressure is held either constant or varied at a predetermined rate by controlling the mass flow rate of process gases. This leads to a third type of system that slaves valves and flowmeters to the primary sensing.  1, record 2, English, - mass%20flow%20controller

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

[In gas chromatography], the flowrate which is normally specified at the column temperature and outler pressure, although the measurement may be made at ambient temperature and must be corrected accordingly(and possibly also for water vapour present in the flowmeter).  1, record 3, English, - volumetric%20flowrate

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

[En chromatographie gazeuse], débit[...] normalement donné à la température de la colonne et sous la pression de sortie bien que la mesure puisse être effectuée à la température ambiante et doive alors être corrigée. (De même faut-il corriger pour la vapeur d'eau éventuellement présente dans le débitmètre).  1, record 3, French, - d%C3%A9bit%20d%27%C3%A9coulement%20volum%C3%A9trique

Record 3,  Textual support,  Spanish