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why we take 4 to 20 mA as out put of every instrument like
pressure transmittre ?why we cant take 0 to 20mA as output?
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Answer Posted / caarpus
ABOVE MENTION IS CORRECT ANSWER.AT SAME TIME NORMALLY WIRE
CAN GIVE 1 OR 2 mA WHEN CONNECT TO ANY SIGNALLING
CIRCUIT.WITHOUT ANY INPUT THEY WILL PRODUCE THE MILL VOLT IS
WRONG ONE.
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