(under subclass 202) Subject matter in which the rate of flow of a fluid is determined in a separated flow path by a sensed thermal effect caused by such flow.
(1) Note. Such measurement often includes determination of the cooling effect upon a heated element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
152.33, for a flowmeter for determining a characteristic of a borehole, a well casing, or a drill rigging by measuring a rate of fluid flow responsive to a thermal property of a fluid.
204.11+, for thermal fluid flow measuring, absent a separate flow path.
