Signal Transfer

Why are using 4ma to 20ma for signal transfer. Why not 0 to 20ma?

Showing Answers 1 - 2 of 2 Answers

sandeepvmenon
Profile Answers by sandeepvmenon

Mar 26th, 2009

Because we cannot detect open loop if 0-20 is used.

fredrick
Profile Answers by fredrick

Apr 7th, 2009

You can detect when their is an open circuit.

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