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Infrared constituent analyzer and control system

  • US 4,602,160 A
  • Filed: 09/28/1983
  • Issued: 07/22/1986
  • Est. Priority Date: 09/28/1983
  • Status: Expired due to Term
First Claim
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1. Apparatus for measuring a constituent of a material including in combination means for directing infrared radiation upon a portion of said material, means for measuring infrared radiation reflected from said portion to produce a reflection signal, means for measuring infrared radiation transmitted through said portion to produce a transmission signal, said transmission signal having a dependence on elastic scattering of said radiation by said material, means responsive to said transmission signal for generating an indication of the content of said constituent, and means responsive to said reflection signal for correcting said content indication for the dependence of said transmission signal on elastic scattering.

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