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Title: Leveraging Digital Communication to get Additional Process Variables
Author: Dirk Steyn
Source: 2018 Canadian School of Hydrocarbon Measurement
Year Published: 2018
Abstract: Analog control signals were established early in the 1950s to be able to get reliable process information over a distance to a control room. Digital communication protocols were introduced to the market in the mid 1980s starting with HART communication which is where digital information is superimposed on top of the 4-20mA analog control signal and was followed by an whole assortment of Protocols

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