1. Help Center
  2. Basic Knowledge

What is absolute pressure and relative pressure?

Different methods to measure pressure

Since Pressure has no direction there are two possibilities to measure pressure.


Absolute Pressure:

Pressure measured against pressure zero pressure is called absolute pressure. Zero pressure is called Vacuum. Absolute Pressure is always positive since the range starts from Zero.



Relative Pressure:

Relative pressure is measured against the ambient pressure. Relative pressure values can be negative since we are comparing against ambient pressure.



Learn more about Balluff Pressure sensors