What does bar mean in practice?
One bar corresponds to 100 kPa, and the pressure in the installation should be distinguished between static and dynamic flow.
When does it matter?
Diaphragms, housings and pumps have specific minimum and maximum pressures that cannot be assessed only from an instantaneous reading.
Which solutions are related to it?
Pressure is measured before and after the device at rest and at maximum draw, using the appropriate pressure gauge range.