what is the difference about HART, and 4-20mA signal?
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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