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what is the difference about HART, and 4-20mA signal?
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Answer Posted / mastersensor80
ANSWER NO 5 IS GOOD,the question about communication
prtotocol, how we trassfer the signal from transmitter to
the DCS,Many ways let us compare between two of them.
a/ 4 - 20 ma (conventila wiring)
b/ HART
HART use the 4 -20 ma but the communication is done via
digital this why we can view many of the transmitter
parameters,this base on PKS (phase hey shifting)refer to
modulation tecniques in communication.
| Is This Answer Correct ? | 7 Yes | 2 No |
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