Oil pressure

[Thorsten]

Hello!

I'm using a 1-10 bar oil pressure sensor. The resistances are 10 ohm at 0 bar, 107 ohm at 5 bar and 184 ohm at 10 bar.
Its not exacly linear, but thats not my problem.
I calculated the function: a = 13,56 ; b = -0,54
Now when the Sensor is connected the Volt Signal is always 0.
When there is a pressure of 5 bar (messured external) the resistance is round about at 100 but the voltage messured in the UTComp is still 0V.
What can be the Problem?
When I disconnect the sensor the messured voltage is going crazy 0-5V.
Im using Port ADC1 Pin A8 with oil pressure.

Thanks for helping!

[ArT]

Is this sensor already powered from stock ECU?
It should be powered with reference voltage +5V.

If it is not powered than you should connect it to AdcVccX
viewtopic.php?f=28&t=58

[Thorsten]

Hey that was exacly my problem!
Now its solved
So, the Adc Port is only an reader, like my voltmeter, right?
Now it make sense, thanks alot!