psi définition pression
Another common unit is the foot sea water (fsw). psi is usually used to measure gauge pressure i.e., pressure relative to atmospheric pressure. The standard atmosphere or one atmosphere (atm) is a standard pressure defined as 101 325 Pa. L'atmosphère de symbole atm ; cette unité a été définie comme correspondant à la pression d'une hauteur de 760 mm de mercure à 0 °C. The gigapascal (GPa) is preferred by geophysicists since the stresses and pressures within the Earth are in a large order of magnitude. It is widely used British and American unit of measurement of pressure. It's important that your tyre is making the correct amount of contact with the road - over or under-inflated tyres mean less grip on the tarmac. The bar is slightly less than an atomophere (1 bar ≈ 0.986 923 atm). The pressure units in the pressure converter, "atmosphere (atm, standard), atmosphere (technical), attobar, attopascal, bar, barad, barye, centimeter of mercury (0°C), centimeter of water (4°C), centibar, centipascal, centipascal, centitorr, decibar, The first row and the first column represent the units and the remaining cells are the values.
Le pouce (inch) de mercure de symbole inHg ; c'est une unité anglo-saxonne de pression. Psi (Pound Force Per Square Inch) Conversion: Psi is a pressure unit and equals to the force of one pound applied to one square inch.
1 inHg = 3386,389 Pa à 0°C et 3376,85 Pa à 15,6°C.
He was a well-known meteorologist and contributed to modern weather forecasting. The most common derived units of the bar are the millibar (mbar), the centibar (cbar), the decibar (dbar) and the kilobar (kbar). The pressure is the force to perpendicular to a unit surface. kilogram force/square millimeter, kilobar, kilopascal (kPa), kilonewton/square centimeter, kilonewton/square meter, kilonewton/square millimeter, kip/square foot, Keeping your tyre pressure where it's supposed to be can cut down on your fuel bills and make your car safer to drive. For example, psig, or pounds per square inch gauge, is a measurement of pressure relative to the ambient atmosphere. This difference is very small and can be ignored for practical purposes. A unit in the first column has a unit value (e.g., 1 Pa, 1 bar) while a unit in the first row have a value of its conversion factor. Enter a value and choose desired pressure units. The other nonstandard units of pressure are listed below.
Le gramme par cm2 de symbole g/cm2. Barye is the CGS unit of pressure.
As we can see from the above table, the difference between mmHg and Torr is marginal, and it will not affect the practical calculations. 1 psi = 0.068046 atm → psi to atm; 1 psi = 0.0689476 bar → psi to bar; 1 psi = 2.0360206576 inHg → psi to inHg; 1 psi = 0.07030695783 kg/cm² → psi to kg/cm²; 1 psi = 6.89476 kPa → psi to kPa It is a standard reference pressure recommended by the National Institute of Standards and Technology (NIST).
It is a metric non-SI unit and defined exactly to 1 × 105 Pa. The most frequently used units of pressure are pascal (Pa), kilopascal (kPa), megapascal (MPa), psi (pound per square inch), torr (mmHg), atm (atmospheric pressure) and bar. PSI can be converted to any number of units used to measure pressure such as Pascal, which is a Newton per square meter. See more. 11 Technical Atmosphere (or Kilogram per Square Centimetre), If you appreciate our work, consider supporting us on ❤️, It is a non-SI unit and a unit value of it is equivalent to 1 kilogram-force per square centimetre, a non-SI metric unit, derived from the bar, pound per square inch or pound-force per square inch, an imperial unit of pressure, derived from psi.
1mmHg = 133,322368 Pa à 0°C. The pressure is a scalar quantity and has the dimension of the force divided by the area. Question:-”What is the meaning of psi in pressure?” The definition of a psi (pound per square inch) is a force of one (1) pound force exerted perpendicular to an area of one (1) square inch. It is defined as the pressure that results when a force of one pound-force is applied to a one-square-inch area. Pound-force per square inch.
Le pascal de symbole Pa ; c'est l'unité légale internationale 1 Pa correspond à 1N/m2. The table below distinguishes both. It is defined as a force exerted by one pound-force on the surface of one square inch. Technical atmosphere (at), also known as the kilogram per square centimetre or the kilogram-force per square centimetre (kgf cm−2), is the force of 1 kgf (one kilogram-force) exerted on the surface of 1 cm2. 1 bar = 100000 Pa. La pression des pneus en automobile ou vtt (vélo) est parfois donné en psi, pour convertir des psi en bar il suffit de diviser par 14,5 en effet 1 bar = 14.503768 psi. What is pressure?
Subscribe to get latest content in your inbox. Because of the wide usage of pressure, it has adopted various units to express it.
The bar was introduced by Norwegian scientist Vilhelm Friman Koren Bjerknes. Toutes les autres unités de pressions sont calculées à partir de cette unité.
1 pascal ou 1 Pa correspondant a une force de 1 newton sur une surface de 1 m2. The common derivatives of the pascal are the micropascal, the hectopascal, the kilopascal, the megapascal, and the gigapascal. L'unité de pression internationale et légale est le Pascal. Psi (comics), DC Comics character Psi Division, division in the Judge Dredd and 2000 AD series of comics; Psi-Force, comic series; Psi-Hawk, comic character; Psi Lords, comic series; Music. The value of 1 fsw is calculated using a depth of 1 ft and seawater density of 64 lb ft−3.
Other related units to it are the millimetre of water (mmH2O), the foot of water (ftH2O), the inch of water (inH2O). Pressure definition, the exertion of force upon a surface by an object, fluid, etc., in contact with it: the pressure of earth against a wall. The symbol for it is p or P. The IUPAC recommendation for pressure is a lower-case p. However, upper-case P is widely used. Inch of Mercury (inHg) is the pressure exerted by a column of mercury 1 inch (25.4 mm) in height. 1 g/cm2 = 98,0665 Pa. megabar, megapascal (MPa), meter of air, microbar, micropascal, millibar, millimeter of mercury, millipascal, millitorr, nanobar, nanopascal, It is also known as barad, bary, baryd, or baryed. 1 foot of water equals to 0.433 psi pressure and 2.31 feet of water is equivalent to 1 psi pressure.
1 at = 98 066,5 Pa. One centimetre of water is the pressure exerted by one centimetre of a column of water at 4 ℃.
The hectopascal (hPa) is used by meteorologists to measure the pressure of air. One barye equals one dyne per square centimetre. 1 cmH2O = 98,0665 Pa. It is often used in aviation, medicine, meteorology, vacuum system, refrigeration. The atmospheric pressures are reported mostly reported in mbar.
Some scientists use the hectopascal hPa, the bar equivalent in SI, as a standard unit. Le millimètre de mercure de symbole mmHg ; cette unité est aussi appelé torr car c'est le physicien Evangelista Torricell qui l'a établi. Le centimètre d'eau de symbole cmH2O est définie comme la pression exercée par une colonne de 1 cm d'eau à 4 °C.
The metre sea water (msw) is a unit of pressure and defined as 0.1 bar.
The unit pascal is christened after French mathematician Blaise Pascal. decipascal, dekabar, dekapascal, dyne/square centimeter, exabar, exapascal, femtobar, femtopascal, foot of air, foot of mercury, foot of water, gigabar, Arts and entertainment "Psi" as an abbreviation for psionics; Comics. The technical atmosphere is a deprecated metric unit. Rechercher un outil (en entrant un mot clé): pneumatique psi bar - équivalence unités de pression. There is a small difference between mmHg and Torr. It is an avoirdupois unit of pressure. 1) Enter a valid value into the input field below.
On emploie aussi son sous multiple le millibar : 1 millibar = 1 hectoPascal. The relationship among all follows as: The pascal is a very small unit, the micropascal is the smallest among them. The pound per square inch or the pound-force per square inch is denoted as psi or lb f in −2.
One millimetre of mercury is defined as the pressure exerted by one millimetre of a column of mercury at 0 ℃. Definition. In the above equation, 1 Torr is the unit from the first column has a unit value, and the right-hand side of the equation, 133.322 Pa, is formed from the first-row unit and the conversion factor.
Par exemple si vous devez gonfler vos pneus à 38 Psi il suffit de les gonfler à 2,6 bar (38 ÷ 14,5 = 2,62). 2015 - asknumbers.com. The bar is also an accepted unit in oceanography, engineering instead of the pascal. And it is necessary for us to know the relationship between various units of pressure.
1 psi equals to 6894.76 pascals or N/m 2. Le pouce (inch) d'eau de symbole inH2O est définie comme la pression exercée par une colonne de 1 pouce d'eau à 4 °C. Le bar de symbole bar ; cette unité est employée par exemple pour donner les pression des pneumatiques, des bouteilles d'oxygène et d'acétylène, ou encore en plongée sous-marine. One pascal is a force of one-newton perpendicular to a surface of one square metre.
Par exemple si vous devez gonfler vos pneus à 38 Psi il suffit de les gonfler à 2,6 bar (38 ÷ 14,5 = 2,62).
The pressure exerted by the atmosphere at sea level is 14.7 psi. So, a tank pressure reading 200 psi at sea level is actually 214.7 psig. The derived units of it are the kilopound per square inch (kpsi) and the megapound per square inch (Mpsi).
ton force/square inch, ton force/square meter and torr (mmHg)". It is a manometric unit based on mercury. PSI, album by Pitchshifter (2002); Psi Com, 1980s rock band; Psi Power, song by rock group Hawkwind (1978); PSI Records, music record label
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