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Title: Advanced Application Of Flow Computers And Telemetering Systems
Author: Shawn Kriger
Source: 2009 International School of Hydrocarbon Measurement
Year Published: 2009
Abstract: The dividing line between electronic flow computers (EFM), remote terminal units (RTU) and programmable logic controllers (PLC) has become clouded. Back in the 1980s, when flow computers were first introduced into our industry, many companies would use each of these technologies to fit a specific application. Flow computers were used to measure gas volumes. RTUs were used for monitoring additional temperatures and pressures and to perform control applications. PLCs were mainly used for custom applications, mostly associated with processing plants. This often lead to complex systems with many different device types, communication networks and host systems which can be difficult to manage. The rapid advancement in software and hardware technology has created a new generation of flow computer with hybrid functionality.

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