Air Compressor Free Air Delivery question

[gerry7]

Hi all,

Currently I am undertaking a project and I am a little bit confused about the free air delivery (F.A.D.) of an air compressor because I need to purchase an air flow meter and don't want to buy something completely out of the ball park.

From the information sheet, the compressor has a maximum working pressure of 7.5 bar and produces a FAD of 1.14m^3/min.
A note on the FAD states that data measured and stated at the following conditions:
Air intake Pressure - 1 bar a (14.5 psia)
Air intake Temperature - 20°C (68°F)
Humidity - 0%(dry)

With the FAD of 1.14m^3/min, is that the volume flow rate of compressed air or of air that has already expanded back to atmospheric pressure? And in the diagram I supplied, is it reasonable to assume that the air has expanded by the time it reaches the flow meter and the flow rate reading would be approximately equal to the FAD.

Thanks

 

[Greg Bernhardt]

I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?

 

[gerry7]

Thanks, I think I have that part figured out.

The compressor I will be using has a maximum working pressure of 7.5 bar, will a flow meter with a max pressure rating of 6.9 bar be ok or should I look for a higher one?

Edit: I assume that I would just be able to adjust the working pressure of the compressor to under 6.9 bar and I should be fine?

 

[Danger]

PORTER-CABLE C2002 Oil-Free UMC Pancake Compressor

I'm not quite sure how that relates to the question.

edit: This post appears to make no sense because it was in response to a spammer who has been deleted.