DIRECT CONNECTION TYPE NON-DISPERSION INFRARED GAS ANALYZER

摘要

PURPOSE:To improve the response, by integrating a gas ejector, a sample gas cell and a sample gas passage as suction unit for a sample gas to be directly connected to a flue. CONSTITUTION:As a compressed air is jetted into a main conduit 30 through a gas ejector nozzle 29, a part of combustion exhaust gas is introduced into a pipe 30 as ample gas, a part of which is introduced into a sample gas cell 24 through a filter 25. Then, infrared rays radiated from a light source 34 enters the cell 24 passing through a correlation filter 36 and one transmission window 21 of the cell 24 and after reflected repeatedly between reflectors 23 and 22, it leaves the cell 24 via the other transmission window 21 to be made incident into an infrared detector 39 via a reflector 37 and a condenser 38. The infrared energy incident into the detector 39 is converted to electric energy to be displayed by arithmetic processing.