Instrumentation comprises scientific activities and technologies that are related to measurement. It is a link between physical, chemical and biological phenomena and their perception by humans. Constantly evolving, instrumentation changes how we live and plays a major role in industrial and life sciences; it is also indispensable to the fundamental sciences. 
   The objective of this course on measurement and instrumentation is to present and analyze all the issues inherent in conceiving and developing measurement, from the source of a signal (sensor) to conveying quantitative or qualitative information to a user or a system. we give examples of a system that brings together technologies, methods and complex components relating to theoretical, experimental, and scientific skills. All of these draw on the essence of instrumentation.