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Answer Posted / abhijith
in 4-20ma we can easily check the zero and wire breaking in
transmitter. Analog card accept 1-5v dc supply. thatsy V-IR
I=V/R
V=1V R=250OHMS
1/250 = 4MA
V=2V THEN I=2/250 = 8MA
V=3V THEN I=3/250 =12MA
V=4V THEN I= 4/250 =16MA
V=5V THEN I=5/250 = 20MA.
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