When control valves are not operating properly, control-loop performance is diminshed, and the valves can wear out prematurely. Too often, poor valve performance goes unnoticed, as diagnostic efforts wait for scheduled shutdowns. This article discusses how trend analysis of key operating variables can be done -while the plant is in operation- to assess control valve operations. Online diagnostics for control valves.

Interkama 2001: The changing face of process automation. Makers of advanced instrumentation and controls are evolving to meet demands imposed by the Internet and industry's increasingly urgent quest for wireless communications.

As U.S. threatens to override its patent, Bayer vows to boost Cipro production. With fear of anthrax exposure abounding in the wake of the September 11 terrorist atacks, the U.S. government and the private sector are demanding that steps be taken to ensure adequate supplies of this crucial antibiotic.