G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/86 (2006.01) D21F 7/00 (2006.01) G01N 21/31 (2006.01) G01N 21/35 (2006.01)
Patent
CA 2125578
A sensor (32) and method is provided for measuring one or more select components of a material (18). The method measures the components by emitting electromagnetic radiation (42) at the material (18) and detecting the intensity of the emerging radiation at the material at separate locations (36; 37) from the source (38). The sensor (32) provides a radiation source (38) for emitting radiation (42) at a sheet (18), a plurality of detecting means (70- 73, 82, 83, 90, 91, 98, 99), wherein the detecting means are offset from the source (38) substantially the same or unequally, for detecting radiation (42) after interaction with the sheet (18) and first and second reflectors (28, 30) for directing the radiation for multiple interactions with the sheet (18) when moving from the source aperture (34) to the detecting means. The invention can accurately measure the select components (e.g., moisture) of different grades of paper by eliminating the effects of the scattering power and determining absorption power at each band of the spectrum considered necessary for a particular measurement.
Anderson Leonard M.
Bossen David A.
Chase Lee Macarthur
Norton Michael Kent
Honeywell-Measurex Corporation
Measurex Corporation
Oyen Wiggs Green & Mutala Llp
LandOfFree
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