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- Inch_of_mercury abstract "Inches of mercury, (inHg and "Hg) is a unit of measurement for pressure. It is still used for barometric pressure in weather reports, refrigeration and aviation in the United States.It is defined as the pressure exerted by a circular column of mercury of 1 inch in height at 32 °F (0 °C) at the standard acceleration of gravity.1 inHg = 3386.389 Pa at 0 °C.Aircraft altimeters measure the relative pressure difference between the lower ambient pressure at altitude and a calibrated reading on the ground. Within the U.S. and Canada, these readings are provided in inches of mercury. Ground readings vary with weather and along the route of the aircraft as it travels, so current readings are relayed periodically by air traffic control. Aircraft operating at higher altitudes (at or above what is called the transition altitude, which varies by country) set their barometric altimeters to a standard pressure of 29.92 inHg (1 atm = 29.92 inHg) or 1013.25 hPa (1 hPa = 1 mbar) regardless of the actual sea level pressure. The resulting altimeter readings are known as flight levels.Piston engine aircraft with constant-speed propellers also use inches of mercury to measure manifold pressure, which is indicative of engine power produced. In automobile racing, particularly USAC and CART Indy car racing, inches of mercury was the unit used to measure turbocharger inlet pressure. However, the inch of mercury is still used today in car performance modification to measure the amount of vacuum within the engine's intake manifold. This can be seen on boost/vacuum gauges.In air conditioning and refrigeration, inHg is often used to describe "inches of mercury vacuum", or pressures below 0 psig, for recovery of refrigerants from air conditioning and refrigeration systems, as well as for leak testing of systems while under a vacuum, and for dehydration of refrigeration systems. The low side gauge in a refrigeration gauge manifold indicates pressures below 0 psig in "inches of mercury vacuum" (inHg), down to a 30 inHg vacuum.In older literature, an "inch of mercury" is based on the height of a column of mercury at 60 °F (15.6 °C) 1 inHg60 °F = 3376.85 PaIn English units: 1 inHg = 0.491 098 psi, or 2.036 254 inHg = 1 psi.".
- Inch_of_mercury wikiPageID "2319766".
- Inch_of_mercury wikiPageLength "3228".
- Inch_of_mercury wikiPageOutDegree "34".
- Inch_of_mercury wikiPageRevisionID "666070037".
- Inch_of_mercury wikiPageWikiLink Aircraft.
- Inch_of_mercury wikiPageWikiLink Altimeter.
- Inch_of_mercury wikiPageWikiLink American_Championship_Car_Racing.
- Inch_of_mercury wikiPageWikiLink American_Championship_car_racing.
- Inch_of_mercury wikiPageWikiLink Atmospheric_pressure.
- Inch_of_mercury wikiPageWikiLink Aviation.
- Inch_of_mercury wikiPageWikiLink Bar_(unit).
- Inch_of_mercury wikiPageWikiLink Barometric_pressure.
- Inch_of_mercury wikiPageWikiLink Category:Mercury_(element).
- Inch_of_mercury wikiPageWikiLink Category:Units_of_pressure.
- Inch_of_mercury wikiPageWikiLink Celsius.
- Inch_of_mercury wikiPageWikiLink Champ_Car.
- Inch_of_mercury wikiPageWikiLink Constant-speed_propeller.
- Inch_of_mercury wikiPageWikiLink Fahrenheit.
- Inch_of_mercury wikiPageWikiLink Flight_level.
- Inch_of_mercury wikiPageWikiLink Height.
- Inch_of_mercury wikiPageWikiLink Inch.
- Inch_of_mercury wikiPageWikiLink Manifold_pressure.
- Inch_of_mercury wikiPageWikiLink Manifold_vacuum.
- Inch_of_mercury wikiPageWikiLink Mbar.
- Inch_of_mercury wikiPageWikiLink Mercury-in-glass_thermometer.
- Inch_of_mercury wikiPageWikiLink Mercury_(element).
- Inch_of_mercury wikiPageWikiLink Pascal_(unit).
- Inch_of_mercury wikiPageWikiLink Piston_engine.
- Inch_of_mercury wikiPageWikiLink Pounds_per_square_inch.
- Inch_of_mercury wikiPageWikiLink Pressure.
- Inch_of_mercury wikiPageWikiLink Reciprocating_engine.
- Inch_of_mercury wikiPageWikiLink Refrigeration.
- Inch_of_mercury wikiPageWikiLink Standard_gravity.
- Inch_of_mercury wikiPageWikiLink Torr.
- Inch_of_mercury wikiPageWikiLink Turbocharger.
- Inch_of_mercury wikiPageWikiLink Unit_of_measurement.
- Inch_of_mercury wikiPageWikiLink United_States.
- Inch_of_mercury wikiPageWikiLink United_States_Auto_Club.
- Inch_of_mercury wikiPageWikiLink Units_of_measurement.
- Inch_of_mercury wikiPageWikiLink Weather_forecasting.
- Inch_of_mercury wikiPageWikiLinkText "InHg".
- Inch_of_mercury wikiPageWikiLinkText "Inch of mercury".
- Inch_of_mercury wikiPageWikiLinkText "inHG".
- Inch_of_mercury wikiPageWikiLinkText "inHg".
- Inch_of_mercury wikiPageWikiLinkText "inch Hg".
- Inch_of_mercury wikiPageWikiLinkText "inch of mercury".
- Inch_of_mercury wikiPageWikiLinkText "inches of mercury".
- Inch_of_mercury wikiPageWikiLinkText "inches".
- Inch_of_mercury hasPhotoCollection Inch_of_mercury.
- Inch_of_mercury wikiPageUsesTemplate Template:Dubious.
- Inch_of_mercury wikiPageUsesTemplate Template:Reflist.
- Inch_of_mercury subject Category:Mercury_(element).
- Inch_of_mercury subject Category:Units_of_pressure.
- Inch_of_mercury hypernym Unit.
- Inch_of_mercury type Organisation.
- Inch_of_mercury type Science.
- Inch_of_mercury type Unit.
- Inch_of_mercury comment "Inches of mercury, (inHg and "Hg) is a unit of measurement for pressure.".
- Inch_of_mercury label "Inch of mercury".
- Inch_of_mercury sameAs Polzada_de_mercuri.
- Inch_of_mercury sameAs Palec_rtuťového_sloupce.
- Inch_of_mercury sameAs Pulgada_de_mercurio.
- Inch_of_mercury sameAs InHg.
- Inch_of_mercury sameAs 水銀柱インチ.
- Inch_of_mercury sameAs Tommer_kvikksølv.
- Inch_of_mercury sameAs m.073jh4.
- Inch_of_mercury sameAs Дюйм_ртутного_столба.
- Inch_of_mercury sameAs Inch_of_mercury.
- Inch_of_mercury sameAs InHg.
- Inch_of_mercury sameAs பாதரச_அங்குலம்.
- Inch_of_mercury sameAs Q1050958.
- Inch_of_mercury sameAs Q1050958.
- Inch_of_mercury sameAs 英寸汞柱.
- Inch_of_mercury wasDerivedFrom Inch_of_mercury?oldid=666070037.
- Inch_of_mercury isPrimaryTopicOf Inch_of_mercury.