ABSTRACT
It was not until the 1960s and 1970s that we saw the emergence of industrial-grade thermal dispersion mass žow meters that could solve the wide range of general industry’s more ruggedized needs for directly measuring the mass žow rate of air, natural gas, and other gases in pipes and ducts. œis chapter describes that class of instruments with emphasis on currently available technology. Future advances in the technology of thermal dispersion mass žow meters are described in Refs. [3,4].
