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Common Pressure unit list and definition
The Pascal is the SI derived unit of pressure, the symbol of Pascal is Pa
1Pa ≡ N/m2 = kg/(m·s2)
2 Millimeter of mercury(mmHg) or Torr
Torr is the unit of pressure based on absolute scale , it is defined as 1/760 of a standard atmosphere
1 Torr ≈ 133.3224 Pa
One Torr is approximately the same as millimetre of mercury
The Bar is a metric unit of pressure . One Bar equal to 100000 Pa .
It is rough equal to the atmospheric pressure on Earth at sea level
4 Technical atmosphere(at)
One technical atmosphere (at) is a unit of pressure equal to one kilogram-force per square centimeter.
One technical atmosphere equal to 98.0665k Pa
5 Standard atmosphere(atm)
The standard atmosphere (atm) is a unit of pressure defined as 101325 Pa. It is used as areference or standard pressure.
6 Pounds per square inch(psi)
The pound per square inch is a unit of pressure , and is a unit of pressure or ofstress based on avoirdupois units
The definition of Pounds per square inch is lbf/in2
One Pounds per square inch is roughly 6.894757×103 Pa