Atmospheric pressure at sea level is 14.7 pounds per square inch.
Psia
(pounds per square inch absolute) is also 14.7 pounds per square inch.
However psia starts with zero pounds per square inch at 29.92 in Hg which is a vacuum measurement (absolute vacuum) in inches of Mercury or in Hg.
14.7 psi atmospheric pressure is as high as atmosphere pressure will ever reach. all measurements below that is a vacuum. That is where psia come in. It can start measurements in a vacuum and continue with the same unit of measurement after it comes out of the vacuum at 14.7 psi.
Standard conditions, or standard temperature and pressure (STP) is the atmospheric pressure at sea level with temperature at zero degrees Celsius (273.15 Kelvin).
Millibar absolute refers to a unit of pressure measurement, where "millibar" is a metric unit equal to one-thousandth of a bar, or 100 pascals. Absolute pressure is measured relative to a perfect vacuum, meaning it includes atmospheric pressure in its measurement. In meteorology, millibar is commonly used to report atmospheric pressure, with standard atmospheric pressure at sea level being approximately 1013.25 millibars.
It is mean atmospheric pressure at sea level.
To calculate absolute pressure when a barometer reading is given, simply add the barometer reading to the atmospheric pressure at sea level, which is approximately 101.3 kPa or 14.7 psi. This will give you the absolute pressure at the specific location where the barometer reading was taken.
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Psia at sea level under standard conditions is equal to 14.7 pounds per square inch absolute. This value represents the atmospheric pressure exerted at sea level under standard conditions of temperature and pressure.
14.7 pounds per square inch absolute (psia) at sea level under standard conditions.
A pressure measurement, in comparison to atmospheric pressure on Earth, at sea level, near sea level, at standard temperature, usually expressing an absolute pressure (but does not have to be). 1 atmosphere absolute = 1.01325 bar absolute 1 atmosphere absolute = 101,325 pascal absolute 1 atmosphere absolute = 14.69595 psi absolute
Standard conditions, or standard temperature and pressure (STP) is the atmospheric pressure at sea level with temperature at zero degrees Celsius (273.15 Kelvin).
Standard temperature and pressure (STP) is a temperature 0ºC (32ºF) with the air pressure the same as at sea level.
Standard conditions, or standard temperature and pressure (STP) is the atmospheric pressure at sea level with temperature at zero degrees Celsius (273.15 Kelvin).
Standard conditions, or standard temperature and pressure (STP) is the atmospheric pressure at sea level with temperature at zero degrees Celsius (273.15 Kelvin).
Standard conditions, or standard temperature and pressure (STP) is the atmospheric pressure at sea level with temperature at zero degrees Celsius (273.15 Kelvin).
Pressure altitude and density altitude are the same value when the atmospheric conditions are standard (i.e., International Standard Atmosphere conditions). This typically occurs at sea level with a standard barometric pressure of 29.92 inHg and a standard temperature of 15 degrees Celsius.
Millibar absolute refers to a unit of pressure measurement, where "millibar" is a metric unit equal to one-thousandth of a bar, or 100 pascals. Absolute pressure is measured relative to a perfect vacuum, meaning it includes atmospheric pressure in its measurement. In meteorology, millibar is commonly used to report atmospheric pressure, with standard atmospheric pressure at sea level being approximately 1013.25 millibars.
The term you're looking for is "standard atmospheric pressure," which is defined as the atmospheric pressure at sea level at zero degrees Celsius. It is commonly used as a reference point for pressure measurements in meteorology and other fields.
It is mean atmospheric pressure at sea level.