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A '''process automation''' or '''automation system''' ('''PAS''') is used to automatically control a process such as chemical, oil refineries, paper and [[wood pulp|pulp]] factories.
The PAS often uses a network to interconnect sensors, controllers, operator terminals and actuators.
A PAS is often based on open standards in contrast to a DCS ([[distributed control system]]), which is traditionally proprietary.
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== Process automation and energy efficiency ==
Process automation systems typically consist of several components that work together to control
#Sensors: Sensors measure various parameters such as temperature, pressure, flow rate, and chemical composition. These sensors generate signals that are transmitted to the controller.
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#Communication networks: Communication networks are used to interconnect the various components of the automation system. These networks may use wired or wireless connections and may be based on standard protocols such as Ethernet or wireless communication protocols.
Process automation
==References==
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