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MONITORING SYSTEM FOR THE ACQUISITION OF THE LAYER THICKNESS OF DUST IN VENTILATION DUCTS

  • US 20110122423A1
  • Filed: 12/18/2008
  • Published: 05/26/2011
  • Est. Priority Date: 12/20/2007
  • Status: Active Grant
First Claim
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1. A detector comprising:

  • a. a plate;

    b. a light source positioned to transmit light over a surface of the plate;

    c. a light sensor positioned to detect light that has been transmitted by the light source and passed over the surface of the plate; and

    d. processing means arranged to determine the depth of a substance on the plate from the amount of light detected by the light sensor.

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