Sensors form a crucial part of measurement systems. This book elucidates the concepts and innovative models revolving around present as well as prospective developments of sensor engineering. Included in this book are coherent discussions on topics such as sensor principles, measuring systems, sensor materials, MEMS technology, etc. The objective of the text is to give a general view of the different aspects of sensor engineering. It will be an excellent resource guide for students as well as academicians pursuing sensor engineering and associated fields.