The device is used to determine the heat transmission of flame exposure to protective clothing against heat and flames. A classification of materials can be made by compar­ ing the determined heat transfer indices, which serve as a reference for the relative heat transfer under the specified test conditions.

A specimen is placed in a specimen holder. A calorimeter is put directly on the inner surface of the specimen. The spec­ imen is then exposed to a heat flux of 80±2 kW/m2 generat­ ed by a propane gas burner. The time required to increase the temperature ofthe specimen by 24 ºC is measured.

The device offers an automated calibration and test sequence. Measurement data are automatically recorded and output in a measurement file. Burner and test sequence are controlled by the software. The burner is ignited electrically, and additionally equipped with a flame protection device. The specimen holder is moved with a fast running linear drive with max. 200 mm/s. Calorimeter cooling is provided by a fan.