Method and device for testing a mat made of biomass particles
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United States of America Patent
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Apr 26, 2005
Grant Date -
Jul 24, 2003
app pub date -
Dec 10, 2002
filing date -
Dec 10, 2001
priority date (Note) -
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Abstract
A testing device tests a mat that is moved in one direction and that is made of biomass particles for manufacturing boards. On one side of the mat, radiation sources are positioned with a transversely spaced-apart relationship transverse to the direction of motion. On the other side of the mat, a line of detector elements is arranged beneath each of the radiation sources. A fan-shaped beam impinges on said detector elements. The beam passes either through one standard body, through the mat, or through neither the standard body nor the mat and is received by the detector elements and converted into electric output signals. The output signals are transferred via lines to an evaluating circuit that controls a device for removing mat portions that contain unwanted matter or the weight per unit area of which is too low.
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