Process Control (2001) in which the basics of instrumentation were given along with
some applications of instruments and control systems to real processes. Because the
present work is an extension of this latter aspect, it is therefore confined mainly to the
techniques of applying instrumentation and control systems to manipulate the process to
give the desired results.
The topics covered in this book will expose the reader to even more actual
requirements that are to be found in real process plants, as well as to some of the methods
used as solutions to control them. Many complex industrial applications have several
common elements. Therefore, the similarity in operation of parts of the process can allow
the control philosophy developed for the control loops involved in the common elements
to be applied across several different industries. The reader is encouraged to look for and
exploit, where possible, this feature to advantage. As mentioned earlier, much of the
instrumentation used in the systems presently discussed have been previously covered in
Instrumentation Fundamentals for Process Control (2001). The present text, however,
has not assumed any prior knowledge, and as far as possible, steps have been taken to
make this book self-sufficient.
Once again I am indebted to many of my former colleagues in the Foxboro Company,
especially M.J.Cooper for his constant encouragement and cooperation, J.F. Whiting,
E.A.Wright, Professor G.W.Skates, and to many other friends for their useful comments
to enrich this work. I owe a particular debt of gratitude to D.R. Beeton, a personal friend
and former colleague for his forbearance, patience, long hours of work, and invaluable
comments in his review of this text. My patient wife Halina, also, once again deserves
special mention for the warmth of her encouragement and her equanimity in tolerating
the many long hours I have had to spend away from her company while this book was
being prepared.