iRun: Horizontal and Vertical Shape of a Region-Based Graph Compression

Sensors are used for process monitoring and for process control. These are essential elements of safe and profitable plant operation that can be achieved only if the proper sensors are selected and installed in the correct locations. While sensors differ greatly in their physical principles, their selection can be guided by the analysis of a small set of issues, which are presented in this section. Each issue is introduced here with process examples, and details on the issues are provided in the remainder of this site for the most common sensors in the process industries.