Assembly can be adjusted by the electrically powered lift table and it can be wheeled into position between the Guide Rails. The Sample Alignment Jig and a system of Stops are provided to ensure the correct position of the assembly.


The Air Nozzle Blower Assembly is positioned behind the Sample Assembly so that a uniform airflow is applied over the surface of the test sample. The air velocity is established using the anemometer according to the requirements detailed in the standard. The volume flow rate of the blower is controlled via the Touch Screen interface on the Diverter Stand.


The Radiant Panel Assembly (mounted on the Main Frame) provides the supplementary radiant heat source directed onto the surface of the test sample. The Radiant Panel can be tilted to provide the 5°or 30°position and consists of four surface combustion heaters which are independently controlled from the Dual Diverter Assembly and Control Box. The air and gas flow to each burner can be adjusted to provide an incident radiant heat flux distribution in accordance with the standard (such that the heat flux meters each measure 12 ± 0.5 kW/m² at the centre and 10 ± 0.5 kW/m² at the four locations on the major axes).


Dual Diverter Assembly and Control Box


The Calibration Assembly Trolley contains the Calibration Element holding the five Heat Flux Meters. The Calibration Element is tilted to the 5°or 30°position and supported on the arms of the trolley. The Assembly is wheeled into position between the calibration guide rails. The Heat Flux Meters are supplied with water via a manifold mounted on the assembly.


ENV 1187 Test 4 – with two stages incorporating burning brands, wind and supplementary radiant heat.


The ENV 1187 Test 4 Roofing Test is a two stage test method incorporates burning brands, wind and supplementary radiant heat. Similar to ENV 1187 Test 3 it is also used to determine the performance of roofs to external fire exposure.


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