Which 0-5V driven 1/8NPT Fuel Pressure Sensor?

[drdano]

I'm looking for a quality fuel pressure sensor that is 0-5V driven with a 1/8NPT fitting.  I'm planning to use it to record fuel pressure data (<25psi) into my data logger so I can diagnose what I think is a low fuel pressure condition.  Is there a favorite brand amongst the FE'r's here?

[jayb]

Funny you should ask, I just bought a new one to try out on my Mach 1.  It's made by AEM Electronics, and Summit Racing sells them for around $60.  I bought the 100 psi version because of the fuel pressures in the EFI system, but they make lower pressure versions also; see the link below.  I'll be hooking mine up sometime in the next week and giving it a try; I'll let you know how it works out - Jay

http://www.summitracing.com/parts/avm-30-2131-50/overview/

[drdano]

Engineering minds think alike... do let me know how it turns out.  I'll use the lower PSI version for my carb'd 428.  I really like the idea of proving the failure before implementing the fix.   

[drdano]

I got this sensor wired up in a test fixture just to see what the voltages are reporting at certain pressures using a secondary mechanical pressure/vacuum gauge and a MityVac to introduce pressure/vac into the test fixture .  The voltage scale is here: http://www.aemelectronics.com/files/info/30-2131-50.pdf

Mine reads 1.4v in open atmosphere when powered up.  Odd.  The function they list on the product page here shows (12.5*V)-20.95...so I'm reading around -3.45 psi in open atmosphere.  I'm thinking I got a bum sensor, what are your thoughts?

I'm also contemplating picking up the 0-15 PSIG version of this sensor for reading carb fuel pressure as it would give a wider voltage scale.

[jayb]

Looks like you should be around 1.65V rather than 1.4.  Definitely off somewhat...