This book covers investigations on the diving apparatus operational features, including research investigations, basics of measuring methods, their technical realization, elaboration, and discussion of the results. It contains analyses of research reports prepared in leading research diving centers to formulate opinions when comparing the methods used and equipment presented, including the accuracy of experiments, complexity analysis, laboratory expertise, metrology features of the used instruments, and correctness of the calibration procedures.
Features:

• Presents a novel comprehensive approach to the design of semi-closed circuit diving apparatuses.
• Provides a methodically documented approach to the modelling and validation processes.
• Replaces statistical, empirical, or semi-empirical models with deterministic models, for which all parameters have physical interpretation.
• Includes flexible procedures at one of the highest technology readiness levels.
• Discusses the reasons for using artificial breathing media in special UBAs.

This book is aimed at researchers, professionals, and graduate students in life support system design, diving submarine safety, and ventilation.