Introducing A New Paradigm For Thermal Dispersion Mass Flow

By John G. Olin, Ph.D., Sierra Instruments, Inc.

Since the publication of the American Society of Mechanical Engineers (ASME) standard on thermal dispersion mass flowmeters in 2011, there have been major advancements in the technology. A review of that standard and a discussion of technology advancements provide the background to understanding groundbreaking innovations in sensor design. That, along with a comprehensive algorithm facilitated by current hyper-fast microprocessors, has created a new paradigm for the measurement of the mass flow rate of gases by means of thermal dispersion technology.