Method for measuring concentration of gas component in measurement gas, involves detecting intensity light of laser diode after irradiating gas, where current intensity of burst signal corresponds to current value of current-time function

摘要

The method involves detecting the intensity (I) of light (4) of a wavelength adjustable laser diode (3) after irradiating the measurement gas (1) and determining the concentration of the gas component based on the reduction of the light intensity by the absorption of light at the location of a selected absorption line of the gas component. The current intensity of the burst signal (13) corresponds to the current value of the current-time function (9) at the location of the selected absorption line.