Learn about the 4-20 mA Loop Current basics, fundamentals, history, advantages, and disadvantages.

4-20 mA Transmitter Principle:
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PLC courses:
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### 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
13:20 - Advantages of 4 to 20 mA Signals
13:50 - Disadvantages of 4-20 mA Signals


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