This book is for readers learning automatic control systems, focusing on a classic process loop with its four major blocks: the measuring sensor block, the controller block, the process adjustment block, and the process block.Design procedures include the selection of measuring sensors and control valves, illustrating to readers how sensors concentrate on the measurement of temperature, pressure, flow rate, level, and analysis of humidity and electrolytic conductivity. Chapter 1, Introduction to Process Measurement and Control, focuses on the process control loop using ISA symbols and block diagrams providing readers with easy reference of ISA symbols in typical Process and Instrumentation Diagrams. Question and problem sets end each chapter helps readers to review and reinforce material discussed. Suggested practical lab assignments are provided at end of each chapter.