As Al, said with appropriate size lines, any location after the pumps and filter and before the regulator would work out.  Theoretically, the pressure in a fluid like gasoline is equal any place the fluid is congruent – however, small holes that the fuel flows through will cause a pressure drop.  But, since your pressure gage requires no flow – there should be no drop.

 

Personally, I put my gauge sensor between after the fuel rails and before the regulator – my rationale was If the pressure on that side was what I wanted, then I know its at least (and perhaps a hair more) that much on the pump side of the fuel rails.

 

Ed

 

 

----- Original Message -----

From: Al Gietzen

To: Rotary motors in aircraft

Sent: Wednesday, January 07, 2009 1:10 AM

Subject: [FlyRotary] Re: Fuel pressure sensor placement

 

Chris;

 

If you are using at least 3/8” dia lines, anywhere between the filter and the pressure regulator should be fine.

 

Al G

 

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Christopher Barber
Sent: Tuesday, January 06, 2009 10:48 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Fuel pressure sensor placement

 

I am getting the bugs worked out of my systems and trying to add one thing at a time as not to screw up what is working.  I have a fuel pressure regulator with a gauge on it in the engine compartment.    I am at a point where I want to add  my fuel pressure sensor so I can read the pressure on the EM2, however, I am unsure as to where the sensor should be placed in the fuel lines.  I do have a very convenient place I could put it between the regulator and the Mistral fuel rail.  It seems that would give me an accurate reading, but I am unsure of what all to consider.  So, what should I be considering?

 

Thanks.

 

All the best,

 

Chris

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