here are three primary technologies users may choose to transfer signals from field devices in process control systems: Field- bus technology (also referred to as bus-to-bus), point-to-bus wiring via remote I/O, or direct point-to- 40 APPLICATIOnS_ Interface technology The gas transfer sta- tions mostly look alike in that they are inconspic - uous, just like the interface technology that works inside them T Interface technology from

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