​Over the years the 4-20 mA transmitter has become an accepted standard technique for transmitting information between field I/O and the control area. New network type transmission schemes are trying to become “the” standard. Meanwhile there are thousands of I/O points and associated control components that will continue to use the analog current loop method for transmitting data.​

pdf icon Dataforth-Corporation-2014-Application-Note-4-20mA-Transmitters.pdf

Dataforth Corporation (2014) Application Note 4-20mA Transmitters
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