Cuvette for absorption spectroscopy of gases with two optical elements

摘要

The cuvette (1) has a first optical unit (10, 11, 12, 13, 14) for guiding measuring light through the cuvette, which establishes a first beam course. The cuvette has a second optical unit (15, 16) for guiding the measuring light through the cuvette, which establishes a second beam course through the cuvette. The first absorption path length for the beams of measuring light, which run through the cuvette, corresp. to the first beam course, is greater than the second absorption path length for the beams of the measuring light, which run through the cuvette corresp. to the second beam course. The cuvette is allocated a unit (5, 8, 9) for conducting gases through the cuvette (1), The first and the second beam course of the measuring light penetrates the flow path of the gases in the cuvette. The ratio of the first absorption path length to the second absorption path length is at least 10 to 1.