| 摘要 |
PURPOSE:To make the title apparatus inexpensive and to enhance maintenance capacity and reliability relating to the measuring accuracy in gain calibration, by integrating a probe and a photometric apparatus and dispensing with the laying of an optical fiber cable. CONSTITUTION:The light of the flame of a burner condensed by a lens 7 is taken in the leading end of an optical fiber 8 to be sent into the optical fiber 8 and taken out from the rear end thereof to be condensed by a lens 11. Next, the light having a wavelength preliminarily selected by a filter 12 is taken out and converted (13) to the electric signal proportional to a spectral radiation diffusion degree. The electric signal is amplified 14 and sent to the A/D converter 3. The A/D converter 3 sends data to CPU 4, and the temp. of the burner and spectral emissivity are calculated from the wavelength and the spectral radiation diffusion degree to diagnose the combustion state of the burner. By this method, the apparatus is made inexpensive and the maintenance capacity and reliability relating to the measuring accuracy in gain calibration can be enhanced.
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