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ANSI/ISA 75.25.01-2000 (R2010)
Test Procedure for Control Valve Response Measurement from Step Inputs
This standard defines the testing and reporting of step response of control valves that are used in throttling closed loop control applications. A control valve consists of the complete, ready-to-use assembly of the control valve body, actuator, and any required accessories. The most probable accessory is a valve positioner.
The International Society of Automation [isa]