Method of measuring and regulating the concentration of a...

Details Method of measuring and regulating the concentration of a... Method of measuring and regulating the concentration of a...

G - Physics

01

V

73/124

G01V 11/00 (2006.01)

Patent

CA 1265682

ABSTRACT The invention relates to a method and device for measuring and regulating the concentration, preferably of a fibre sus- pension, with the aid of a blade (1) pivotally suspended in the suspension. The blade (1) is caused to pivot such that its trailing end (8) moves between two end positions (A,B) in the suspension for providing a predetermined angular stroke ( .alpha. ). Time measurement is carried out when the trailing edge (8) of the blade (1) moves through its stroke from its upper end position (A) to its lower end position (B). The time obtained is a parabolic function of the con- centration and varies in response to the shear force re- sistance in the fibre suspension of the blade (1) during its angular stroke, and thus in response to the concentra- tion of solid substances in the suspension.

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