Why any transmitter signal is 4-20 mA only
Why is started from lower range 4 mA and upper range is
20mA.
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Answer Posted / ramali
current output is 4-20 mA.
Let take a transmitter operating range is 0-100%
in this case, 0% is only 4 mA,100%is 20 mA.
Because the transmitter have no power,then its output is
0mA.That means zero , live zero.
zero means there is no process is done.
live zero is transmitter have no power,etc.,
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