Wind speed sensor signal 4-20MA output - anemometer

Other Hardware General Electronics
1

Hello!
I'm trying to figure out how to connect a anemometer that has an output current from 4 to 20 mA with an arduino board. To do so, a need to convert the current from 4-20 mA to 0-5 volts to be able to use an arduino analog pin. Any suggestion? Thanks in advance.

2

Connect the 4-20mA to a 250 ohm resistor to analog input, with other leg of resistor to Arduino Gnd. The voltage developed across the resistor will then be 1V to 5V.

http://www.industrologic.com/aninput.htm

3

Thanks for the information!