Cone calorimeter heat flux sensor Heat flux meter

Application Cone Calorimeter, Flooring Radiant Panel, NBS Smoke Density Chamber, Surface Spread of Flame Test, LIFT, IMO Spread of Flame Apparatus, FAA Oil Burner, etc. Heat Flux Meter application in Fire Tests In many fire test methods, the radiation level is specified and, therefore, it is of great importance that the radiative heat flux is well-defined and measured with sufficient accuracy. Radiative heat transfer is also the dominant mode of heat transfer in most real fires. A heat flux meter is an instrument which measures the radiant and convective heat that is transferred from the fire environment to a sensing element. In practice, heat flux is most commonly measured with total heat flux meters of the Schmidt-Boelter (thermopile) or Gardon (foil) type. A typical design consists of a thermopile sensor, mounted on a metal body that is cooled by water. The body acts as a constant temperature heat sink. The thermopile sensor typically has a nearly black surface which is assumed to absorb all incident radiation, or which emissivity is given. The incident heat flux onto the absorber creates a local temperature difference. This difference is measured, resulting in an output signal (voltage). As a first approximation, this voltage is linear with the heat flux received by the sensor. The measurement of the temperature difference is based on thermocouples or thermopiles, which are passive and do not require any external power. Test standards using heat flux meter • ISO 5657 Reaction to fire tests — Ignitability of building products using a radiant heat source