Instrumentation Interview Question:

Explain What are de-saturators?

Submitted by: Administrator

When, in some processes, e.g. batch processes, long transient responses are expected during which a sustained deviation is present the controller integral action continuously drives the output to a minimum or maximum value. This phenomenon is called ‘integral saturation of the control unit'. When this condition is met, then this unit is de-saturated.
Submitted by: Administrator