.~ By measuring swirl rate imparted by static means {2}
861.34
.~.~ Precess type
DEFINITION
Classification: 73/861.34
Precess type:
(under subclass 861.32) Subject matter wherein the swirling motion of the fluid is transformed into precessional movement and the precessional movement is detected.
(1) Note. Usually, an expansion or constriction of the flow path is employed to transform the swirling motion to precessional movement.