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Answer Posted / bhanu prabhath
yes, i agree with JB,s answar, to some exctent, some times transmitter 0 drifts due to calibration disterbance,if we use 0-20ma we cont find the -ve 0 drift of the transmitter in case of 4-20 the drift will be within the 0-4ma. also the 4-20ma is easy to equal division and calculate with any range .
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