TERMIUM Plus®

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PRESSION ABSOLUE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-04-14

English

Subject field(s)
  • Fluid Mechanics and Hydraulics (Physics)
  • Aircraft Systems
DEF

The pressure reckoned from absolute zero pressure; or, commonly, gauge pressure plus the pressure of the atmosphere.

OBS

The true total pressure equal to the gauge pressure plus approximately 101.3 kPa.

OBS

Absolute pressure is expressed in units of force per unit of area, as pounds per square inch absolute (psia).

OBS

Gauge pressure and absolute pressure are related, absolute pressure being equal to gauge pressure plus atmospheric pressure.

OBS

Absolute pressure can be zero only in a perfect vacuum.

OBS

absolute pressure : term standardized by ISO.

French

Domaine(s)
  • Mécanique des fluides et hydraulique (Physique)
  • Circuits des aéronefs
DEF

Mesure de pression utilisant le vide absolu comme référence.

CONT

Il importe cependant de connaître la pression absolue [...] régnant dans une enceinte : elle est la somme pression relative [...] + pression atmosphérique [...]

OBS

pression absolue : terme normalisé par l'ISO.

OBS

pression absolue : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

Spanish

Save record 1

Record 2 2010-10-05

English

Subject field(s)
  • Atmospheric Physics
  • Oceanography
  • Underwater Diving (Sports)
DEF

The ambient pressure including the air column over the water.

OBS

The air column = 1 atm. at sea level. In sea water, another atmosphere is added each 33 FSW. There is an increase in pressure per foot of sea water equivalent to 1/33 or .03030303. So ATA may be calculated by multiplying the depth (FSW) by .0303030 and then adding 1 for the air above the water. i.e. the ATA at 46 FSW = (46 [asterisk] .0303030) + 1 = 2.3939 ATA. to convert ATA to FSW.ATA -1 [asterisk] 33 = FSW.

French

Domaine(s)
  • Physique de l'atmosphère
  • Océanographie
  • Plongée sous-marine (Sports)
DEF

Somme de la pression atmosphérique au niveau de la mer et de la pression décomptée de la surface de la mer à la profondeur de la mesure.

CONT

La pression atmosphérique représente la pression que l'atmosphère exerce au-dessus de nous. Au niveau de la mer, elle est de 760 mmHg, ou 1 bar. Cette pression augmente, dans l'eau, d'un bar tous les 10.33 m. On exprime la pression absolue, ou atmosphère absolue (ATA), par rapport au vide total. C'est l'unité utilisée en médecine hyperbare.

OBS

L'expression de l'atmosphère absolue, ou ATA, est égale à la pression lue au manomètre de plongée plus celle qui est lue au baromètre sur le lieu.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Oceanografía
  • Buceo (Deportes)
Save record 2

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