After reading a lot and a few questions answered in this forum, I managed to make my sensor working. It's a pressure transmitter (piezometer) which output 4-20mA (corresponds to 0-10m).
I did it this way:
I have a 2 converters:
- for the 12V:
- for the 5V:
My only issue now is that the signal is not super stable. It's not a big deal but during my tests, I'm not moving the sensor but the results can vary by 1 to 3 cm between each measurement. For each of them, I read the analog 10 times (with 200ms delay) and average them.
I would like to know if there's a way to make the signal more stable.
Thank you again for your help