Control in process industries refers to the regulation of all aspects of the process. Precise control of level,
temperature, pressure and flow is important in many process applications.
Process control refers to the methods that are used to control process
variables when manufacturing a product. For example, factors such
as the proportion of one ingredient to another, the temperature of the
materials, how well the ingredients are mixed, and the pressure under
which the materials are held can significantly impact the quality of
an end product.
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