An intelligent electronic device for monitoring and determining an amount of electrical power usage by a consumer, or end user, and for providing broadband Internet access to the consumer. The devices uses roller bearings to control the radial position of the vane and control rods or pins are used to control axial positioning of the vane, its \u2018centralization\u2019 with respect to the rotor and the endplates. The ultrafilter is permeable to solvent. Each blade may be may be flat in shape, except for the ribs extending therefrom, or it may have a cycloidal curvature that curves away from the direction in which the rotatable center member rotates.