How to read pressure sensor 4-20mA signal using Arduino nano

[jremington]

The easiest way to read the 4-20 mA signal is to use the analog input and a resistor, either 250 Ohms with a 5V ADC reference voltage, or 51 Ohms with the 1.1V ADC reference voltage.

Reading 4-20mA current on Arduino

I have to read value from Pressure Transducer which provides output in 4-20mA. Kindly write down the ways to calculate current . Pressure transducer is two wire 12V operated