Gasboard 31XX series multi-component gas analizer adopts the most recognized international advanced technology. It is based on Non dispersive Infrared (NDIR) absorption theory, that can measure gas concentration of CO, CO2, CH4, H2, O2 emitted from application such as blast furnance or coal gasification process. Gasboard 31XX used based on electrochemistry sensor to measure the concentration of O2 and new TCD sensor for H2. The measurement of component and range can be customized by costumer’s requirement. The gasboard 31XX operation is user friendly, the measurement is precise and working is reliable and can be used in wide ranges of industrials scene. Test process is clear and the step is standard.