Dynamic gas diluter evaluation method and device based on CRDS and standard gas

The invention relates to a dynamic gas diluter evaluation method and device based on CRDS and standard gas. The device comprises zero gas, target gas and a gas diluter , wherein the gas diluter is provided with a zero gas inlet and a target gas inlet, the zero gas enters the gas diluter through a first pipeline, the target gas enters the diluter through a second pipeline, and the zero gas and the target gas are mixed in a mixing chamber, and then enter the gas inlet of a CRDS detection device through the gas outlet of the gas diluter . According to the invention, the uncertainty of the gas diluter evaluation method based on the CO2 standard gas and the CRDS detection system is only related to the CO2 standard gas and the CRDS detection system, and the uncertainty of the method is smaller than or equal to 1.0%. 本发明涉及一种基于CRDS和标准气体的动态气体稀释仪评定方法和装置，其包括：零气和目标气体，气体稀释仪，在所述气体稀释仪上具有零气进气口和目标气体进气口，所述零气通过第一管路进入到所述气体稀释仪中，所述目标气体通过第二管路进入到所述稀释仪中；所述零气和目标气体在混合室内进行混合，之后通过所述气体稀释仪出气口进入到CRDS检测装置进气口。本发明提出的基于CO2标气与CRDS检测系统的气体稀释仪评定方法的