WEIGHT VECTOR FOR THERMAL-DIFFUSION FLOWMETERS .2. APPLICATION TO A PARTICULAR CONFIGURATION

The linear theory of thermal diffusion flowmeters developed in Part 1 of this paper is here applied to the Hastings configuration and to its particular realisation by Komiya, Higuchi and Ohtani. The axisymmetri c weight function for this configuration is worked out and used to pre dict the flowmeter sensitivity to a fully developed laminar flow profi le. The conditions for validity of the weight vector approach for rect ilinear flow and for the neglect of free convection are worked out for the Hastings configuration. In long and narrow Hastings flowmeters th ese conditions are much less restrictive than the general conditions e stablished in Part 1 of the paper.