| 摘要 |
PURPOSE:To analyze even multiple low density substances simultaneously by transmitting sample light released from a spectral analysis light source to a spectral analysis cell, and also transmitting signal light from the spectral analysis cell to a measurement part. CONSTITUTION:A wave guide type glass light emitting element 4 is connected to a sample irradiation light transmitting optical fiber 7. Also a gas sump 13 for inducing gas is connected to both ends of an analyzing cell 8 using a hollow wave guide path 12, and a gas to be measured is sucked into one gas sump 13 and introduced into the cell 8. Sample lights (signal lights) transmitted through the cell 8 are collected by a lens 16 of the other gas sump 13, and concentrated on a fluoride glass signal light transmission fiber 17. The output of the signal light is sent to a measurement part 18, changed into parallel light beam in the measurement part, through a collimator lens 19, and then divided by a beam splitter 20. After that, one is inputted into a detector 22, and the other is inputted into a detector 24. Then the levels of both of them are measured comparatively to measure the density of CO2 gas. |
