OPTICAL ABSORPTION GAS ANALYZER Russian patent published in 2005 - IPC

FIELD: measurement technology.

SUBSTANCE: gas analyzer has electromagnet radiation source with wavelength belonging to spectrum of absorption of analyzed gas, tubular gas tray with internal light-reflecting walls and photoreceiver, both disposed along the path of radiation. Photoreceiver is connected through amplifier to data processing and registration unit. Tubular gas tray is made in form of spiral to increase path of light flow and to eliminate direct exposure of photoreceiver. It's advised to make tray in form of spiral of Archimedes. To perform exchange of tray with outer medium, the through holes can be made in its walls at acute angle to plane of symmetry of tray at the side of electromagnet radiation source. Sensitivity of measurement of CO, CO₂ and methane is no lower than 20ppm.

EFFECT: improved precision; higher sensitivity of measurement.

2 dwg, 1 tbl