THE FTT MICRO CALORIMETER


The FTT Micro Calorimeter was developed in co-operation with the Federal Aviation Administration (FAA). It determines fundamental thermo-chemical data in seconds and predicts fire properties of materials.


The technique enables parameters such as Specific Heat Release Rate (W/g), Heat of Combustion (J /g) and IgnitionTemperature (°C) to be quickly determined from very small (1-5mg) specimens. It is a low cost and accurate technique; typical repeatability is ± 5%.


Micro Calorimeter data has been shown to correlate with fire test data (Cone Calorimeter,OSU), flammability results (LOI, UL94) and combustion tests (Bomb Calorimeter) and is therefore seen as a powerful, low cost tool to assess and predict flammability properties.


The FTT Micro Calorimeter 


Accurate and cost effective micro calorimetry using a Pyrolysis Combustion Flow Calorimeter (PCFC) ASTM D 7309


The FTT Micro Calorimeter uses the same oxygen depletion calorimetry technique used in our bench and room scale calorimeters. The specimen is first heated at a constant rate of temperature rise (typically 1°C/s) in a pyrolyser and the degradation products are purged from the pyrolyser by an inert gas (nitrogen).The gas stream is mixed with oxygen and enters a combustor at 900°C where the decomposition products are completely oxidised.Oxygen concentrations and flow rates of the combustion gases are used to determine the oxygen depletion involved in the combustion process and the heat release rates are determined from these measurements.


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