What are the four main parts of a cone calorimeter?

Cone calorimetry is a fire test tool based on the direct correlation between heat released during combustion and oxygen consumption. Cone calorimetry is directly related to the severity of the fire, such as the fire growth rate. In order to obtain the flammability of the material, it is exposed to an external radiant heat source. Therefore, since this is a forced combustion test, the cone value is usually considered to reflect the ignitability of the item.

The cone calorimeter is mainly composed of four parts: combustion chamber, load platform, oxygen analyzer, smoke measurement system, ventilation device and related auxiliary equipment.
 
1. Combustion chamber: The combustion chamber is composed of cone heater, 10KV igniter, control circuit, windshield, etc. The intensity of the incident heat flow can be appropriately selected according to different test requirements. The sample is placed on the combustion platform, ignited by the igniter, and the combustion products are discharged by the ventilation system.

Cone Calorimeter

2. Oxygen analyzer: The oxygen analyzer is the core part of the cone calorimeter. It is a high-precision gas analyzer that can accurately test the percentage of oxygen in the ventilation pipe during combustion and change with time. Furthermore, the combustion heat release of the material is determined by the principle of instant oxygen concentration and oxygen consumption.
 
3. Loading platform: The loading platform is a device for measuring the quality change of the sample, which can accurately record the quality change of the sample during the combustion process. When burning, the sample is placed on the support of the load table.
 
4. Smoke measurement system: Helium-neon laser transmitter and dual electron beam measuring device are installed in the ventilation duct near the combustion chamber to determine the specific extinction area (SEA) of the smoke in the duct.