There are three major reasons why process plants
require automatic controls:
Safety - The plant or process must be safe to operate.
The more complex or dangerous the plant or process,
the greater is the need for automatic controls.
Stability - The plant or processes should work steadily,
predictably and repeatably, without fluctuations or
unplanned shutdowns.
Accuracy - This is a primary requirement in plants
to prevent spoilage, increase quality and production rates,
and maintain comfort. These are the fundamentals of
economic efficiency.
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