Kavlico pressure sensors reading ~130 psi with zero psi

[Madfox18]

I am setting up an HDX system and have Kavlico 150 psi Pressure sensors (P/N 103757-000) for both oil and fuel. With my engine not running, I am getting about 131 psi readings on the oil and with the fuel pumps off I am getting a similar result. I don't believe this is correct. My understanding is that these sensors require a resistor and I have installed one on the fuel but not the oil. I have these on pins 6 and 7. Any help would be appreciated.

 

[GKC Aviation]

You didn't mention what engine you are installing to (Rotax, Lycoming, etc)
I've not seen any mention of a resistor on those wires for these sensors.
Pin 7 is oil temperature, not pressure.

 

[Madfox18]

It is an Aeromomentum engine.

 

[jakej]

I am setting up an HDX system and have Kavlico 150 psi Pressure sensors (P/N 103757-000) for both oil and fuel. With my engine not running, I am getting about 131 psi readings on the oil and with the fuel pumps off I am getting a similar result. I don't believe this is correct. My understanding is that these sensors require a resistor and I have installed one on the fuel but not the oil. I have these on pins 6 and 7. Any help would be appreciated.

The resistors are for use on the ‘legacy’ (eg D120/180) units & not used on the SV series. Like GKC said - recheck your sensor definitions .

 

[Madfox18]

Thanks - I'll try that

 

[jakej]

Thanks - I'll try that

Also I’d confirm you have the 5vlt line, white/red stripe, connected to them - just to be sure

 

[GKC Aviation]

 

[Madfox18]

Update-I had my power input incorrect. I was powering the pressure sensor with 12v vice 5v. Thanks for the help!