Impeller device for data acquisition in a flow

摘要

This invention relates to an impeller device for data acquisition in a flow. It comprises a support ( 3 ) with two bearing blocks ( 4.1, 4.2 ) to hold a spindle ( 2 ) around which the impeller ( 1 ) is fitted. The spindle ( 2 ) comprises two approximately conical ends ( 5 ). The bearing blocks ( 4.1, 4.2 ) are made from a material with the lowest possible coefficient of friction and each comprises an approximately conical recess ( 6 ) into which one of the ends ( 5 ) of the spindle ( 2 ) fit.