Automation Equipment and Instrumentation

Control and instrumentation can be defined as subproducts for measuring, sending messages, controlling, and regulating. These are installed locally in each system, in the installation as a whole, or in the control technical room. 

TABLE 9.7 Important Information and Requirements for Control and Instrumentation 

To ensure flexibility for possible later additions or changes, the instrumentation has to be selected based on standardized subproducts using national or international norms. These standards are mainly based on the measuring areas and signal types. Typical signals for input and output to the data-based controller (DDC and PTC) are 

The term process is normally used in connection with the control of a plant in industry the term, however, also describes the HVAC installation in industry and buildings. 

The word process is from Latin and defines many different aspects. The automation process relates to the automatic regulation required to control the physical conditions in a system. The term process relates to both the optimal conditions within which the operation is maintained and when the operation varies with time or by a predetermined plan. 

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