Learning the basics can ease loop tuning frustration and ensure stability. During plant operations, it seems that tuning control loops is an ongoing task, which can be a continual frustration to ...

Just over a decade ago, an article titled, "Advanced Control Strategies Move into the Field" (Control, October 2008), highlighted three evolving trends in the process control world that would "make ...

The paper proposes the full linearization of nonlinear characteristics of flow control valves via variable gear ratio design. The inherent nonlinear function of the normalized valve capacity ...

As part of a financial statement audit, auditors are required to obtain an understanding of a company's internal control system. Internal control is an interconnected web of policies, procedures, ...

A variety of modules are offered that allow control of temperature, flow, and pressure; the single- and dual-loop temperature modules also provide ramp-and-soak controls. Up to 16 of these modules can ...

Feedwater control valves play a critical role in boiler operation. One important parameter of their design is the pressure drop at the rated condition as well as off-design conditions. However, ...