Pascal (unit)

Pascal
symbol Pa
dimension pressure (p)
SI 1 kg (m·s ²) = 1 N/m ²

the Pascal is those SI - unit of the pressure. It was designated after Blaise Pascal.

1 Pa
= 1 kg/(m·s ²) =1 N/m ².

Kraft in Newton per surface of a square meter.


SI prefixes
name Yotta Zetta Exa Peta Tera Giga mega Kilo of Hekto Deka
symbol Y Z E P T G M k h there
factor 10 24 10 21 10 18 10 15 10 12 10 9 10 6 10 3 10 2 10 1
name Dezi Zenti milli micro nano pico Femto Atto Zepto Yocto
symbol D C m µ n p f A z y
Factor 10 -1 10 -2 10 -3 10 -6 10 -9 10 -12 10 -15 10 -18 10 -21 10 -24


The air pressure is mostly indicated in Hektopascal (hPa), because so on the one hand the legally prescribed unit Pascal are usedand one knows on the other hand a unit has, which corresponds to the used milli bar (mbar). In the research with the vacuum engineering the millibar is often used in particular as unit. Instead of on Pascal to transfer is rather the complete renouncement of torr a topic.

In the ventilation frequently the unit Dekapascal (daPa) is used, whereby a Dekapascal corresponds to 0.1 mbar.

  • 100 Pa = 10 daPa = 1 hPa = 1 mbar
  • of 100,000 Pa = 0.1 MPa = 1 bar = 1000mbar
  • of 1,000,000 Pa = 1 MPa = 10 bar = 1 N/mm ²

the medium air pressure of the atmosphere on sea level and standard pressure and/or. Normal pressure is 101325 Pascal = 1013.25 hPa or 101.325 kPa.


Units of pressure and conversion factors [1]
Pascal [2] bar technical/physical atmosphere torr Pound per square tariff
1 Pa ≡ 1 N/m ² = 10 −5 bar ≈ 10,2·10 −6 RK ≈ 9,87·10 −6 at ≈ 7,5·10 −3 torr ≈ 145·10 −6 psi
1 bar = 100000 Pa ≡ 10 6 dyn /cm ² ≈ 1.02 RKs ≈ 0.987 at ≈ 750 torr ≈ 14.504 psi
1 RK = 98066.5 Pa = 0.980665 bar ≡ 1 kp /cm ² ≈ 0.968 at ≈ 736 torr ≈ 14.223 psi
1 at = 101325 Pa = 1.01325 bar ≈ 1.033 RKs p 0 = 760 torr ≈ 14.696 psi
1 torr ≈ 133.322 Pa ≈ 1,333·10 −3 bar ≈ 1,360·10 −3 RK ≈ 1,316·10 −3 at ≡ 1 mm Hg ≈ 19,337·10 −3 psi
1 psi ≈ 6894.757 Pa ≈ 68,948·10 −3 bar ≈ 70,307·10 −3 RK ≈ 68,046·10 −3 at ≈ 51.7149 torr ≡ 1 lb f./in. ²
  1. data are not specified by water gauge as well as simpleMultiple of other units such as MP/m ² = 0.1 kp/cm ² = 0.1 RKs.
  2. Pascal is the SI-UNIT of the pressure, bar is accepted.
 

  > German to English > de.wikipedia.org (Machine translated into English)