This cohesive and homogeneous work describes the methods, principles, and devices of modern process measurement technology for condition, quantity, and product characteristics. The application features and limitations are specified. A dedicated chapter group presents the possibilities and means of intelligent sensor systems, including monitoring and diagnostic functions as well as communication between sensor systems and information receivers. The target audience for this compendium primarily includes engineers and chemists without specialized training, who are responsible for chemical and process engineering production facilities in roles such as plant managers or process engineers. They can use the compendium to update, supplement, or expand their knowledge in the subject area.