I want to make my arduino mimic an industry standard 4-20ma sensor. I understand that the load that it will drive (PLC, VSD, etc) are usually around 100 ohms. Has anyone got any ideas on the circuit that would be required to do this?

4-20ma output from Arduino

lemming November 25, 2012, 11:30pm 3

I'm talking analogue; e.g. pressure, water level, etc.

Topic		Replies	Views
4-20mA Output General Electronics	29	29386	May 6, 2021
0...20 or 4...20mA current loop sensors Sensors	5	11664	May 6, 2021
Arduino act as two wire current loop sensor Project Guidance	8	1971	July 21, 2021
Arduino controlled current loop (4-20mA) transmitter General Electronics	16	6058	May 6, 2021
Read a sensor current from 4-20mA Sensors	4	4529	May 6, 2021