{{Short description|Measured valueValue of a particulargiven part of a processmonitored which is being monitored,or controlled,or regulatedprocess}}
{{about|the engineering indicator|the mathematical concept used in thermodynamics|process function}}
{{more citations needed|date=May 2022}}
AIn [[control theory]], a '''process variable''', ('''PV'''; also '''process value''' or '''process parameter''') is the current measured value of a particular part of a [[process]] which is being monitored or [[Control system|controlled]]. 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]]. The set point is usually abbreviated to (SP, and the process value is usually abbreviated to PV).<ref name=Bequette>
{{cite book |author=B. Wayne Bequette | title = Process Control: Modeling, Design, and Simulation | publisher =Prentice Hall Professional | year= 2003 | page = 5 |url=https://books.google.com/books?id=PdjHYm5e9d4C&pg=PA5 |isbn = 9780133536409 }}
