4-20 mA Current Loop - History, Why, Advantages, Disadvantages

Learn about the 4-20 mA Loop Current basics, fundamentals, history, advantages, and disadvantages. 4-20 mA Transmitter Principle: https://instrumentationtools.com/4-20ma-transmitter-works/ PLC courses: https://automationcommunity.com/ ### Video Topics ### 0:00 - Basics of 4 to 20 mA 0:38 - History of 4-20 mA Signals 1:57 - PLC Basics with 4 to 20 mA Transmitter 4:13 - Why do we use 4 to 20 mA Loop Current? 6:12 - Live Zero Advantage of 4-20 mA 7:47 - Why 4 mA? 9:10 - Why 20 mA? 9:36 - Linearity and 1:5 ratio 11:22 - Easy conversion from 4-20 mA to 1-5 volts 12:54 - Advantages of Current Signals