Method and device for examining pulp for the presence of shives

Details Method and device for examining pulp for the presence of shives Method and device for examining pulp for the presence of shives

G - Physics

01

N

73/59

G01N 21/01 (2006.01) G01N 21/53 (2006.01) G01N 33/34 (2006.01)

Patent

CA 1046789

Abstract of the Disclosure In a method for examining pulp for the presence of shives therein a suspension of the pulp is passed through a measuring duct with transparent walls and at least one beam of light having a wavelength within the infra-red range from 750 to 950 nm is directed through the measuring duct perpendicularly to the direction of flow of the pulp suspension therein. The intensity of the light beam after its passage through the measuring duct is measured by means of a photo detector and the output signal of the photo detector is analyzed with respect to amplitude variations therein.

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