Linescan Camera System for 100% Moisture Measurement

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Lawrence Livermore National Laboratory (LLNL), in collaboration with ABB Industrial Systems, and under the sponsorship of the Department of Energy's (DOE) Office of Industrial Technologies (OIT), has developed a new method for measuring the moisture content of a paper web process on-line with 100% coverage of the sheet. The method uses InGaAs linear arrays with associated optics and electronics to continuously image the full width of the web and measure transmitted light at 1.45{micro} and another suitable reference wavelength between 1{micro} and 1.6{micro}. The method could also be used to measure paper basis weight, in addition to moisture, by adding ... continued below

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PDF-file: 16 pages; size: 1 Mbytes

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Hernandez, J E; Koo, J; Romero, C; Vigars, M; Newman, M & Dallum, G October 11, 2006.

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Description

Lawrence Livermore National Laboratory (LLNL), in collaboration with ABB Industrial Systems, and under the sponsorship of the Department of Energy's (DOE) Office of Industrial Technologies (OIT), has developed a new method for measuring the moisture content of a paper web process on-line with 100% coverage of the sheet. The method uses InGaAs linear arrays with associated optics and electronics to continuously image the full width of the web and measure transmitted light at 1.45{micro} and another suitable reference wavelength between 1{micro} and 1.6{micro}. The method could also be used to measure paper basis weight, in addition to moisture, by adding additional hardware and optics to measure a third wavelength at 1.57{micro}. A patent (USP: 6355931), entitled ''System and method for 100% moisture and basis weight measurement of moving paper'', was granted by the US Patent Office on March 12, 2002 for this invention. A proof-of-concept prototype system was also developed and tested on several occasions at ABB's sensors development facility in Columbus, Ohio. Based on current experimental results, the system seems particularly suitable for detecting moisture variation on a paper web for medium and heavy weight products at the dry end as well as the press section of the machine. The prototype system was scheduled to be tested at a paper mill in the fall of 2001. The test had to be canceled as ABB was unable to provide the required field support for the test due to restructuring and down-sizing of their R&D organization.

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PDF-file: 16 pages; size: 1 Mbytes

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  • Report No.: UCRL-TR-225922
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/900125 | External Link
  • Office of Scientific & Technical Information Report Number: 900125
  • Archival Resource Key: ark:/67531/metadc885100

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • October 11, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 29, 2016, 6:43 p.m.

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Hernandez, J E; Koo, J; Romero, C; Vigars, M; Newman, M & Dallum, G. Linescan Camera System for 100% Moisture Measurement, report, October 11, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc885100/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.