7 External linOfficial SI website: Table 8.
īarg is a unit of gauge pressure, i.e., pressure in bars above ambient or atmospheric pressure see absolute pressure and gauge pressure below. He was the director of the Meteorological Office in London from 1907 to 1920. The bar and the millibar were introduced by the British meteorologist William Napier Shaw in 1909. The same definition is used in the compressor and the pneumatic tool industries (ISO 2787). In 1985 the IUPAC recommended that the standard for atmospheric pressure should be harmonized to 100,000 Pa = 1 bar = 750 Torr. The bar is legally recognized in countries of the European Union. The bar is widely used in descriptions of pressure because it is only about 1% smaller than the atmosphere (symbol: atm), whicH now is defined to be 1.013 25 bar exactly. They are not SI units, nor are they cgs units, but they are accepted for use with the SI. Other units derived from the bar are the megabar (symbol: Mbar), kilobar (symbol: kbar), decibar (symbol: dbar), centibar (symbol: cbar), and millibar (symbol: mbar or mb). It is about equal to the atmospheric pressure on Earth at sea level. The bar is a unit of pressure defined as 100 kilopascals.
#2 6 bar in psi license#
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