MECH DEFINITIONS Mechanical Basics Thermal Engineering

What is the SI Unit of Pressure?

SI Unit of Pressure:The unit of pressure in the SI system is the pascal (Pa), defined as a force of one Newton per square meter.

Units of Pressure:The units of pressure plays a vital role in the field of thermodynamics and heat transfer.Therefore,in this article,I am going to explain about the different units of pressure in a detailed manner.

What is the SI Unit of Pressure
What is the SI Unit of Pressure

SI Unit of Pressure-Units of Pressure:

  • 1 atm    =101.325KPa

                    =760mm of Hg Column

                    =10.33 m of H2O Column


  • 1bar       =10^5 Pascals


                     =751.6 mm of Hg Column


  • 1torr      =1mm of Hg

                     =133.33 Pascals


  • For High Pressures,go for ‘Hg’ manometers
  • For Low Pressures,go for ‘water’ manometers.


  • Pabsolute=Patm+Pguage
  • Pabsolute=Patm-Pvaccum


Note:For calculations part,Vaccum and Guage pressures are not used.Therefore,Absolute pressure comes into picture.

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This is the complete explanation of different units of pressure[SI Unit of Pressure] which is shown in a detailed manner. If you have any doubts, feel free to ask from the comments section. Please Share and Like this blog with the whole world so that it can reach to many.

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