The controls and instrumentation basic description that
follows is for an aeroengine gas turbine; however, the
reader can find system commonality with its features in
land or marine applications. The analog dial gauges illus-
trated in this subsection are quite common on numerous
plants that were supplied and commissioned before the
digital age. Newer systems have digital gauges and read-
ings. Later in this chapter, C, I, and D features of non-
aeroengines also are discussed.
The gas turbine engine has many different applications,
each with different requirements, and therefore each with
its own control equipment and system architecture. How-
ever, the basic principles and functions of a gas turbine
control system are essentially the same for all applications.