PROCESS INSTRUMENTATION introduces the key elements of modern process control, and prepares readers for a career as a process technician in the chemical processing industry. Providing a thorough understanding of the basics, the book begins with an overview of industry symbols and diagrams, instruments, equipment, systems, and technology before advancing to the fundamental concepts of pressure, temperature, level, flow, and compositional variables, as well as how they apply to a control loop and various methods used in process control. Readers then progress from tracing and drawing simple process flow diagrams (PFD) to more sophisticated tasks, such as reading, sketching, and troubleshooting an operating unit on their own using a piping and instrumentation drawing (P &ID). PROCESS INSTRUMENTATION was written from the unique perspective of the process technician, rather than an instructor, which helps apprentices clearly identify and internalize their roles and responsibilities, and better prepare for their futures.