TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

Flow-type spirometers... are lightweight and portable because their components are small, but their mechanical operating characteristics are complex... Different flow-type spirometers measure :(1) pressure differentials created as expired air passes through an orifice or across a resistance element, [for example], composed of parallel capillary tubes or a mesh screen(pneumotachometer) ;(2) rotation speeds of a turbine as expired air flows across it(turbine) ;or(3) electrical current required to maintain the temperature of a heated wire as expired air flows across it(hot wire anemometer).  1, fiche 1, Anglais, - flow%2Dtype%20spirometer

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Il existe différents types de spiromètres. Ils sont divisés en deux grandes catégories : les volumétriques et les débitmétriques. [...] Le second groupe d'appareils mesurent directement le débit et calculent par intégration en fonction du temps le changement de volume. Le débit peut être mesuré de différentes façons : par une turbine rotatoire comme dans un anémomètre, par le refroidissement d'une thermistance, par le changement de vitesse de transmission d'un ultrason ou encore par la chute de pression de part et d'autre d'une résistance à l'écoulement de l'air (le pneumotachographe).  1, fiche 1, Français, - spirom%C3%A8tre%20d%C3%A9bitm%C3%A9trique

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

[A] recording pressure tube anemometer in which the wind scale of the float manometer is made linear by the use of springs.  3, fiche 2, Anglais, - anemobiagraph

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 DEF

Anémomètre à tube de pression enregistreur dans lequel l'échelle du vent du manomètre à flotteur est rendue linéaire au moyen de ressorts.  2, fiche 2, Français, - an%C3%A9mobiagraphe

Fiche 2,  Justifications,  Espagnol

Record number: 2, Textual support number: 1 DEF

Anemógrafo diferencial de presión en el que la escala de velocidad del viento del flotador del manómetro ha sido linealizada por medio de muelles.  1, fiche 2, Espagnol, - anemobi%C3%A1grafo

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

A type of pressure-tube anemometer, named after the inventor, in which the pressure head is located on the windward end of the wind vane so that it is kept facing into the wind.  3, fiche 3, Anglais, - Dines%20anemometer

Record number: 3, Textual support number: 1 CONT

The Dines Pressure Tube Anemometer is universally recognised as the most reliable and accurate instrument of its kind and has been adopted as standard by the British Meteorological Office and by meteorological stations world-wide. Dines Pressure Tube Anemometer consists essentially of a Head Assembly, a Velocity Recorder and a Direction Recorder, the IM100 records wind speed and wind direction simultaneously on a single chart. An important feature of the Dines, is that it records not only average wind velocity over a given time, but also variations in wind force, with the strength and frequency of gusts, providing valuable data on the internal structure of the wind.  2, fiche 3, Anglais, - Dines%20anemometer

Record number: 3, Textual support number: 2 CONT

The suction head is mounted concentrically with the shaft, near the bearing that supports the vane, and develops a suction that is independent of wind direction. The pressure difference between the suction head and the pressure head is proportional to the square root of the wind speed and is measured by a specially designed float manometer with a linear wind scale.  3, fiche 3, Anglais, - Dines%20anemometer

Record number: 3, Textual support number: 3 CONT

The Dines anemometer was first described by William Henry Dines in 1892 and had all the essentials of the final form of the pressure-tube anemometer. With various modifications, the Dines anemometer remained a useful wind measuring device into the 1960s.  3, fiche 3, Anglais, - Dines%20anemometer

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Selon leur principe de fonctionnement, les capteurs de la vitesse ou/et de la direction du vent peuvent être classés en quatre catégories. Ainsi, on distingue ceux qui sont sensibles [...] à la pression du fluide : le tube de Pitot ou l'anémomètre de Dines (ancienne version du tube de Pitot, largement utilisée dans les années trente pour les observations météorologiques) [...]  3, fiche 3, Français, - an%C3%A9mom%C3%A8tre%20de%20Dines

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 DEF

Instrument with a light plate which is suspended on a horizontal axis and whose angle of inclination to the vertical is a function of wind speed.  4, fiche 4, Anglais, - pressure%2Dplate%20anemometer

Record number: 4, Textual support number: 1 CONT

... the pressure plate or normal plate anemometer. This is the oldest anemometer known, having been developed by Robert Hooke in 1667.... The main application of this type of anemometer has been in gust studies because of its very short response time. Gusts of duration 0. 01 s can be examined with this anemometer.  3, fiche 4, Anglais, - pressure%2Dplate%20anemometer

Record number: 4, Textual support number: 1 OBS

Anemometers may be divided into two classes,(1) those that measure the velocity,(2) those that measure the pressure of the wind, but... a suitable anemometer of either class will give information about both these quantities.... Anemometers which measure the pressure may be divided into the plate and tube classes, but the former term must be taken as including a good many miscellaneous forms.  5, fiche 4, Anglais, - pressure%2Dplate%20anemometer

Record number: 4, Textual support number: 2 OBS

[Examples of pressure-plate anemometers :] bridled-cup anemometer, normal-plate anemometer, pendulum anemometer.  1, fiche 4, Anglais, - pressure%2Dplate%20anemometer

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 DEF

Instrument muni d'une plaque légère suspendue à un axe horizontal et dont l'inclinaison par rapport à la verticale est fonction de la vitesse du vent.  2, fiche 4, Français, - an%C3%A9mom%C3%A8tre%20%C3%A0%20plaque

Fiche 4,  Justifications,  Espagnol

Record number: 4, Textual support number: 1 DEF

Instrumento en que el viento actúa sobre una placa suspendida en un eje horizontal cuya inclinación, con respecto a la vertical, es función de la velocidad del viento.  1, fiche 4, Espagnol, - anem%C3%B3metro%20de%20placa

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 DEF

Any instrument that measures the wind speed by measuring the pressure exerted by the wind upon the sensor element of that instrument.  1, fiche 5, Anglais, - pressure%2Dtype%20anemometer

Record number: 5, Textual support number: 1 OBS

Anemometers may be divided into two classes,(1) those that measure the velocity,(2) those that measure the pressure of the wind, but... a suitable anemometer of either class will give information about both these quantities.... Anemometers which measure the pressure may be divided into the plate and tube classes, but the former term must be taken as including a good many miscellaneous forms.  4, fiche 5, Anglais, - pressure%2Dtype%20anemometer

Record number: 5, Textual support number: 2 OBS

pressure-type anemometer... Examples include the pressure plate anemometer and the Pitot tube.  1, fiche 5, Anglais, - pressure%2Dtype%20anemometer

Record number: 5, Textual support number: 3 OBS

In consulted sources, the term "pressure(-type) anemometer" is sometimes used synonymously with either "pitot-tube anemometer" or "pressure-plate anemometer".  5, fiche 5, Anglais, - pressure%2Dtype%20anemometer

Fiche 5,  Justifications,  Français

Record number: 5, Textual support number: 1 CONT

1667 - Hooke utilise le principe de la variabilité de la pression dynamique du vent pour mesurer la vitesse de ce dernier. Il s'agissait d'un anémomètre à pression.  2, fiche 5, Français, - an%C3%A9mom%C3%A8tre%20%C3%A0%20pression

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 DEF

Instrument in which the excess of pressure and suction associated with the action of the wind on tube openings are combined to operate the float of a manometer.  3, fiche 6, Anglais, - pressure%2Dtube%20anemometer

Record number: 6, Textual support number: 1 CONT

[A] pressure-tube anemometer [is] an anemometer which derives wind speed from measurements of dynamic wind pressures. Wind blowing into a tube develops a pressure greater than the static pressure, while wind blowing across a tube develops a pressure less than the static. This pressure differential, which is proportional to the square of the wind speed, is measured by a suitable manometer. [e. g. :] anemo-biagraph, Dines anemometer, Pitot tube.  1, fiche 6, Anglais, - pressure%2Dtube%20anemometer

Fiche 6,  Justifications,  Français

Record number: 6, Textual support number: 1 DEF

Instrument dans lequel la surpression et l'aspiration liées à l'action du vent sur les ouvertures du tube sont combinées pour actionner le flotteur d'un manomètre.  2, fiche 6, Français, - an%C3%A9mom%C3%A8tre%20%C3%A0%20tube%20de%20pression

Fiche 6,  Justifications,  Espagnol

Record number: 6, Textual support number: 1 DEF

Instrumento en el que el incremento de la presión y la succión asociados a la acción del viento sobre los orificios del tubo se combinan para accionar el flotador de un manómetro.  1, fiche 6, Espagnol, - anem%C3%B3metro%20diferencial%20de%20presi%C3%B3n

Fiche 7,  Justifications,  Anglais

Record number: 7, Textual support number: 1 DEF

A rotation anemometer which has a horizontal axis upon which helical shaped vanes are mounted.  3, fiche 7, Anglais, - propeller%20anemometer

Record number: 7, Textual support number: 1 CONT

Another increasingly popular type of anemometer is the propeller anemometer. This anemometer is simply a very small two-or three-blade propeller, calibrated so that the revolutions per minute(rpm) corresponds to specific wind speeds. This anemometer is known as a "lift" device because it relies upon the rational lift caused by the wind on the propellers to measure the wind speed. By using two propellers held fixed at a perpendicular angle to each other, one can simultaneously measure the wind speed and direction using vector analysis. By including a third propeller positioned vertically relative to the other two, vertical wind movements also can be measured. It should be noted that the effect of variations in air density(due to temperature and/or pressure conditions) are accounted for differently in lift devices(for example, propeller anemometers) and drag devices(for example, cup anemometers).  4, fiche 7, Anglais, - propeller%20anemometer

Record number: 7, Textual support number: 2 CONT

The ... propellor anemometer consists of a circular array of blades, usually not less than three, mounted at one end of a horizontal shaft; the blades are free to rotate in response to wind forces acting on them. A wind vane is attached to the opposite end of the shaft. The horizontal shaft is connected to a vertical shaft which, being mounted in bearings, turns as the varying wind direction acts on the vane.  2, fiche 7, Anglais, - propeller%20anemometer

Record number: 7, Textual support number: 3 CONT

THEORY OF MEASUREMENTS: Wind speed: Propeller anemometer. Wind direction: Wind vane.  5, fiche 7, Anglais, - propeller%20anemometer

Fiche 7,  Justifications,  Français

Record number: 7, Textual support number: 1 DEF

Anémomètre qui possède un axe horizontal sur lequel sont montées des pales plates ou hélicoïdales.  2, fiche 7, Français, - an%C3%A9mom%C3%A8tre%20%C3%A0%20h%C3%A9lice

Record number: 7, Textual support number: 1 CONT

[...] anémomètres à moulinet et à hélice. La différence essentielle entre ces deux types est que le moulinet est un capteur planaire (il mesure la proportion du vecteur vent sur un plan perpendiculaire à son axe de rotation) alors que l'hélice est un capteur cartésien (elle mesure la projection du vecteur vent sur son axe de rotation).  3, fiche 7, Français, - an%C3%A9mom%C3%A8tre%20%C3%A0%20h%C3%A9lice

Fiche 7,  Justifications,  Espagnol