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

fredrick

 Profile Answers by fredrick Questions by fredrick

• Apr 7th, 2009

You can detect when their is an open circuit.

sandeepvmenon

 Profile Answers by sandeepvmenon Questions by sandeepvmenon

• Mar 26th, 2009

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

Answer Question  Select Best Answer