System and method for measurement of traveling webs

作者： Mathew G. Boissevain , Michael K. Norton , Leonard M. Anderson

DOI:

关键词: Light detection 、 Optics 、 Wavelength 、 Materials science 、 Perpendicular

摘要: A system and method for optically measuring parameters such as dry basis weight of fibrous sheet materials during manufacture without scanning. The includes mirror sections reflecting modulated light parallel rays perpendicularly incident upon one surface a traveling web, plurality detection devices to detect transmitted through the web at two distinct wavelengths. further ducts environmentally isolate devices.

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