why do we use 4-20 ma current why cant o-20ma
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Answer Posted / m.mohan
4 MA
LIVE ZERO DEAD ZERO CONCEPT
20MA
ELECTRICALLY UPTO 20MA THERE IS NO CREATING A SPARK
IN THE TIME OF SHORTED LOOP.ALSO CURRENT TRAVELLING LONG
DISTANCE WITHOUT NO DROP.(UPTO 1500m)
the main purpose for choosing 4to 20ma easily convert to
voltage to add 250 ohms resistance with the help of ohm's
law
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