Process variable: Difference between revisions

Revision as of 07:16, 29 August 2010

Revision as of 19:02, 29 November 2010

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{{about|the engineering indicator|the mathematical concept used in thermodynamics|process function}}

{{Unreferenced|date=October 2006}}

{{Orphan|date=November 2009}}

A '''process variable''' or '''process parameter''' is the current status of a process under control. An example of this would be the temperature of a furnace. The current temperature is called the process variable, while the desired temperature is known as the [[setpoint (control system)|set-point]].

Measurement of process variables are important in [[controlling]] a process. The process variable is a dynamic feature of the process which may change rapidly. Accurate measurement of process variables is important for the maintenance of accuracy in a process. There are three commonly measured variables which affect chemical and physical process: [[pressure]], [[Thermodynamic_temperatureThermodynamic temperature|temperature]], and composition.

{{DEFAULTSORT:Process Variable}}

[[Category:Control theory]]

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