Praegustest elektrivooluliidestest kasutatakse peamiselt tööstusharu standardset 4 mA kuni 20 mA elektrivooluliidest protsessijuhtimisrakenduste jaoks, kus seda kasutatakse laialdaselt signaalide edastamiseks protsessiinstrumentidest proportsionaalsete-integraal-derivaatide kontrolleritele, järelevalvekontrolli ja andmete kogumise süsteemidele ning programmeeritavatele loogikakontrolleritele.
A major application of current loops is the industry de facto standard 4 mA – 20 mA current loop for process control applications, where they are extensively used to carry signals from process instrumentation to proportional–integral–derivative controllers, supervisory control and data acquisition systems, and programmable logic controllers.
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