Pressure regulation with fine control

Projects General Guidance
1

Hey everyone, I am designing a pressure regulation system for tank and will be using a proportional valve, a MOSFET, a power supply and an air supply to the valve along with an Arduino UNO R4 to control everything. Also a diffrential pressure sensor.

My goal is to have slight overpressure in the tank, around 1000 Pa.

For this I need a pressure regulator that works in the magnitude of Pascals and not kPa or MPa.

I have gone through most of the posts here regarding this topic and have looked at valves from SMC, Clippard etc.

Do you have any suggestions for my use case? I am also currently having a look at alves from Festo

2

Do you mean very low pressure difference from atmospheric pressure? The units are irrelevant.

What do you mean by "pressure regulator" above? Isn't the system you are planning to build a "pressure regulator"?

3

Yes, I mean very low pressure difference to atmospheric pressure.

I meant a pneumatic control valve.

4

Sorry you need to provide more information .

How big is the vessel you want to fill ? What is it ?
What is the source of air , pressure flow ?
Do you want a pressure regulator or control of a valve ? What valve have you got ?

What is the project aiming to do ?

5

How accurate does this need to be?
What would the high and low settings be?
You can get a differential pressure sensor such as the NXP: MPX5500.

6

One other parameter is missing and that is the necessary reaction time for pressure adjustment.