Evaluating current topics in instrumentation and sensor engineering courses, this book employs principles-based explanations to delineate the technology. Using commercial devices and technology to support theoretical bases, the author provides solid answers to questions such as: What makes a sensor intelligent? What are the various ways to classify them? How can a classical instrumentation system be provided with the intelligent features? and What are the recent technologies of II/SS? The book includes illustrations, photographs, numerical problems and case studies to explain the theory.