Pressure Sensor

I’m looking for help with measuring a pressure sensor.I don’t have a data sheet only a part number(456180).

I only have a graph that show current vs pressure(bar) picture in attachments.

My question is what is the best way to go about measuring this with arduino?

Maybe some good ways of coding for it?


That appears to be a standard 4-20 mA sensor. Most people use a 250 Ohm resistor in the sensor ground lead to convert the current to a voltage, and measure the resulting 1-5 V using the analog input. Be sure to connect the sensor and Arduino ground leads.

In the diagram below, R2 and C1 help protect the analog input from overvoltage and electrical noise.