What is HART protocol?

/ Automation, Instrumentation / 9 minutes of reading

4-20mA Current-loop technology has been used for analog sensors for the past 4 decades to transmit important process data to the control system, whether that system is a DCS(distributed control system) a PLC (programmable logic controller),or a single-loop controller. Current-loop data transmission is simple and cost effective. Only a small amount of current(4 to 20 …

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