Device and method for determining a concentration of a measurement component in a gas

摘要

The device (10) has a reference cell (40) arranged parallel to an optical path, and an evaluation unit (34) determining concentration of a sample component i.e. hydrogen sulfide, from signals of light receivers (32, 44). Gas to be examined is supplied to a measured cell (28) and to the reference cell via an absorption unit (50) i.e. cartridge, that includes a substance to fully absorb the sample component. A wavelength selection unit selects an absorption wavelength, and an absorber includes silica gel as a support for the absorbed substance. An independent claim is also included for a method for determining concentration of a sample component in gas.