Patent ID: 6364524
Filing Date: 2002-04-02
Classification: G01J

Abstract:
In a temperature-monitored system, including apparatus having structure defining a combustion chamber and at least one ceramic surface therewithin, the improvement wherein said system further includes a radiation pyrometer comprising, in combination:means for collecting and transmitting electromagnetic radiation, including a hollow core waveguide having entry and exit ends, and means for directing radiation into the hollow core of said waveguide at said entry end; means for mounting said means for collecting and transmitting with said means for collecting disposed for receiving, and directing into said hollow waveguide core, radiation emanating from said at least one ceramic surface within said chamber; a radiation detector that is responsive for generating electrical signals indicative of the energy of impinging radiation lying in a spectral range of 10 to 11.5 microns, said detector being operatively connected to said exit end of said waveguide for receiving radiation transmitted through said core thereof; means for discriminating radiation, for permitting substantial passage of radiation only within said spectral range, said means for discriminating being operatively disposed for permitting substantial passage to said detector of radiation of wavelengths only within said spectral range; data acquisition means operatively connected to receive such indicative electrical signals from said detector; and electronic data processing means operatively connected and programmed for determining, from signals received from said data acquisition means, the temperature of said at least one ceramic surface, said data processing means being programmed to correlate measured spectral radiance to the radiance of a black body at wavelengths within said range.