Instrumentation holds a central position in engineering training, thanks to the continued advance of sensor technology and industry's demand for increasing sophistication in measurement and control systems. More than ever students of instrumentation needs to understand the practical problems which affect the implemetation of sensing and measuring devices -knowledge of the instruments themselves is no guarantee that they can be successfully installed in any given system. This book shows how instruments can be put to optimun use in a variety of environments. The topics covered include general transduction techniques and sensing of various measurands, detailed analysis of calibration and feedback. Two case studies discuss some current practices in the food and nuclear power industries. This book should be of interest to second and third year electrical engineering students taking courses in instrumentation.