Poor control performance makes itself evident primarily when a controlled variable (process variable) ... such as mill or feedwater heater level control, drives a valve or damper directly, ...

As such, it is normally the variable of first choice as an MV for any higher-level control strategy, especially for an APC controller. There are some exceptions. Although flow is a true extensive ...

Multiple input control attempts to manipulate a single process variable to maintain several controlled variables within appropriate ranges. For example, the boiler steam outlet valve may be computed ...

In SIGMATEK's web-based visualization tool, the LASAL VISUDesigner, two new controls are available to make life easier for the user: the Data Logger for process analysis and the Interpreter for ...