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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 the pressure exerted by a column of mercury of 1 inch (2.54 cm) in height at the standard acceleration of gravity. Conversion to metric units depends on the temperature of mercury, and hence its density; typical conversion factors are: 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 Pa

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rdf:type
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  • Inch of mercury
  • Pulgada de mercurio
  • InHg
  • 水銀柱インチ
  • Дюйм ртутного столба
  • 英寸汞柱
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  • L'abbreviazione inHg, che significa pollici di mercurio (dall'inglese inches, pollici), è un'unità di misura della pressione non appartenente al Sistema internazionale, ma ancora talvolta utilizzata dall'aviazione negli Stati Uniti per misurare la pressione atmosferica nelle previsioni meteorologiche. Un pollice di mercurio è la pressione esercitata da una colonna di mercurio alta 1 pollice alla temperatura di 0 °C in gravità standard. 1 inHg = 25,4 mmHg = 3,386 kPa.
  • 水銀柱インチ(すいぎんちゅうインチ、記号:inHg)は、ヤード・ポンド法の圧力の単位である。 日本では、いくつかの例外的な場合(ヤード・ポンド法#日本における使用)を除き、計量法第8条により「取引又は証明」に使用することが禁止されている。アメリカ合衆国では天気予報や航空分野で気圧を表すために今でも広く使われているが、それ以外の分野では時代遅れになっているようである。
  • Дюйм рту́тного столба́, дюйм рт. ст., in Hg, inHg — внесистемная единица измерения давления, равная 3'386.389 Па при 0 °C (32 °F). Используется почти исключительно в Соединённых Штатах Америки для измерения атмосферного давления (в основном в прогнозах погоды) и в авиации. Значение 29.92 inHg = 1 атм или 1'013.25 гПа (1 гПа = 1 мбар) является калибровочным для высотомеров (альтиметров) является калибровочным при измерении давления в дюймах рт. ст.
  • 英寸汞柱或英寸水銀柱(符號:inHg和"Hg)是壓強的量度單位。在美國,它仍然用於天氣報告、製冷和航空,作為氣壓單位。 它被定義為在32 °F(0 °C)和標準重力加速度下,1英寸高的水銀圓柱所造成的壓強。 1 inHg = 3386.389 Pa在0 °C。 在舊文獻中,一「英寸汞柱」是基於在60 °F(15.6 °C)的水銀柱的高度。 1 inHg60 °F = 3376.85 Pa 在英制單位:1 inHg = 0.491 098 psi,或2.036 254 inHg = 1 psi。
  • 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 the pressure exerted by a column of mercury of 1 inch (2.54 cm) in height at the standard acceleration of gravity. Conversion to metric units depends on the temperature of mercury, and hence its density; typical conversion factors are: 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 Pa
  • La pulgada de mercurio, inHg, o "Hg es una unidad de medida de presión. Todavía es ampliamente utilizada en Estados Unidos para determinar la presión atmosférica en informaciones meteorológicas y por la aviación de los Estados Unidos, pero fuera de estos ámbitos se considera obsoleta. Se define como la presión ejercida por una columna de mercurio de 1 pulgada de altura a 32 °F (0 °C) en condiciones de gravedad estándar. 1 inHg = 3.386,389 pascales a 0 °C. En bibliografía antigua, una "pulgada de mercurio" se basa en la altura de una columna de mercurio a 60 °F (15,6 °C): 1 inHg60 °F = 3376.85 Pa
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  • 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 the pressure exerted by a column of mercury of 1 inch (2.54 cm) in height at the standard acceleration of gravity. Conversion to metric units depends on the temperature of mercury, and hence its density; typical conversion factors are: 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 Pa In English units: 1 inHg60 °F = 0.489 771 psi, or 2.041 771 inHg60 °F = 1 psi.
  • L'abbreviazione inHg, che significa pollici di mercurio (dall'inglese inches, pollici), è un'unità di misura della pressione non appartenente al Sistema internazionale, ma ancora talvolta utilizzata dall'aviazione negli Stati Uniti per misurare la pressione atmosferica nelle previsioni meteorologiche. Un pollice di mercurio è la pressione esercitata da una colonna di mercurio alta 1 pollice alla temperatura di 0 °C in gravità standard. 1 inHg = 25,4 mmHg = 3,386 kPa.
  • La pulgada de mercurio, inHg, o "Hg es una unidad de medida de presión. Todavía es ampliamente utilizada en Estados Unidos para determinar la presión atmosférica en informaciones meteorológicas y por la aviación de los Estados Unidos, pero fuera de estos ámbitos se considera obsoleta. Se define como la presión ejercida por una columna de mercurio de 1 pulgada de altura a 32 °F (0 °C) en condiciones de gravedad estándar. 1 inHg = 3.386,389 pascales a 0 °C. Los aviones que operan a mayor altitud (por encima de la denominada altitud de transición, que varía según el país) establecen sus altímetros barométricos en una presión estándar de 29,92 inHg o 1.013,2 hPa (1 hPa = 1 mbar), independientemente de la presión real al nivel del mar. Las lecturas del altímetro resultantes se conocen como nivel de vuelo. Los aviones con motor de pistón y hélice de velocidad constante también usan pulgadas de mercurio para medir la presión del colector, lo que indica la potencia producida por los motores. En bibliografía antigua, una "pulgada de mercurio" se basa en la altura de una columna de mercurio a 60 °F (15,6 °C): 1 inHg60 °F = 3376.85 Pa
  • 水銀柱インチ(すいぎんちゅうインチ、記号:inHg)は、ヤード・ポンド法の圧力の単位である。 日本では、いくつかの例外的な場合(ヤード・ポンド法#日本における使用)を除き、計量法第8条により「取引又は証明」に使用することが禁止されている。アメリカ合衆国では天気予報や航空分野で気圧を表すために今でも広く使われているが、それ以外の分野では時代遅れになっているようである。
  • Дюйм рту́тного столба́, дюйм рт. ст., in Hg, inHg — внесистемная единица измерения давления, равная 3'386.389 Па при 0 °C (32 °F). Используется почти исключительно в Соединённых Штатах Америки для измерения атмосферного давления (в основном в прогнозах погоды) и в авиации. Значение 29.92 inHg = 1 атм или 1'013.25 гПа (1 гПа = 1 мбар) является калибровочным для высотомеров (альтиметров) является калибровочным при измерении давления в дюймах рт. ст.
  • 英寸汞柱或英寸水銀柱(符號:inHg和"Hg)是壓強的量度單位。在美國,它仍然用於天氣報告、製冷和航空,作為氣壓單位。 它被定義為在32 °F(0 °C)和標準重力加速度下,1英寸高的水銀圓柱所造成的壓強。 1 inHg = 3386.389 Pa在0 °C。 在舊文獻中,一「英寸汞柱」是基於在60 °F(15.6 °C)的水銀柱的高度。 1 inHg60 °F = 3376.85 Pa 在英制單位:1 inHg = 0.491 098 psi,或2.036 254 inHg = 1 psi。
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