Fiber optic flocculation sensor

Lun K. Cheng; Uilke Stelwagen

doi:10.1117/12.166846

7 February 1994 Fiber optic flocculation sensor

Lun K. Cheng, Uilke Stelwagen

Proceedings Volume 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation; (1994) https://doi.org/10.1117/12.166846
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

A fiber optic flocculation sensor based on measuring the intensity of light reflected by solid particles in suspension (i.e. paper pulp) in a well defined measurement volume, was constructed. This sensor is designed for monitoring the flocculation state of paper pulp in the papermaking process. The flocculation determines to a great extent the quality of the final product, the paper. Tests with different types of pulp were performed in both a closed loop system and a small paper machine. In this investigation the flocculation state is expressed as a root mean square flocculation index. The flocculation index delivered by this fiber optic system shows a very high correlation with the flocculation index provided by a camera system `looking at' the same pulp, while the latter has a great resemblance with the human perception of the flocculation.

Citation Download Citation

Lun K. Cheng and Uilke Stelwagen "Fiber optic flocculation sensor", Proc. SPIE 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation, (7 February 1994); https://doi.org/10.1117/12.166846

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KEYWORDS

Sensors

Fiber optics sensors

Imaging systems

Fiber optics

Cameras

Light sources

Solids

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