pressure pick up questions

[tafeteacher]

I'm looking at the plans for the PTS bench and there are 3 pickups in the bench.
2 x in the top box and 1 x in the lower box.

My question is, both of the pressure pickups in the top section should be testing the same thing, no?
If they are, then why couldn't I just use one pickup and "tee" it off to the appropriate MTV-5 valve?

Looking for advice here.

[tafeteacher]

No-one?

[Tony]

There can be a lot of violence and buffeting going on in the air inside the bench.
If you only take a pressure measurement at one specific place, the raw pressure reading can sometimes bounce around a bit.
The solution is to take pressure samples from more than one place and average out the pressure in some kind of combining manifold.
Quite a few variations of that theme are possible, for example run a pipe around inside the settling chamber. Perforate the pipe in a few places with tiny pin holes.
Hook it all up and see how it goes. If you have bouncing numbers, worry about it then.

[tafeteacher]

Thanks Tony, that's good advice and makes sense. I was trying to feed less lines into the box that holds all the electronics.