Introduction: Testing room: Testing room can be built as closed or open. Closed test room:(Option:CFR 1633 standard requires test room can be built as closed or open.) The room is made of rock wool board. There are no openings except door and video surveillance windows. The size of the test room is 3660 ± 25mm in length, 3050 ± 25mm in width and 2438 ±25mm in height. The door is 2032 ± 6 mm high and 965 ± 6 mm wide. Quartz glass monitor window, size 150x150mm. The smoke collecting hood is located outside the door (smoke outlet) to collect smoke. Open test room The smoke collecting hood is positioned directly above the sample and the bottom edge is 2400 mm away from the ground. Conical collectorsize: 3000mm X 3000mm, height 1000mm The conical collector has 900mm X 900mm X 900mm X 900mm cubic mixing chamber on the top, and the mixer is installed inside. The smoke exhaust pipe consists of a diversion section (x2), a straight section, a measuring section and a fan. The measuring section is equipped with wind speed probe, thermocouple, optical system and sampler. Smoke exhaust capacity of fan is not less than 0.5m³/s Control cabinet 19 inch standard cabinet, simple appearance, science and technology Control system center, integrated computer, display, analyzer, cold trap, control and data acquisition system. 19 inch display, Labview control software, electronic control and pneumatic configuration panel. Computer: CPU I3, memory 4G, hard disk 500G Win7/Win10 system Equipped with imported analyzer (domestic analyzer is optional) Measurement of Gas Concentration of O2, CO2 and CO.