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3. Characteristics determined during testing
3.1 Calibration constant for oxygen consumption analysis
The heat flow calibration described in ISO 5660-1 is carried out on a daily basis to check the correct operation of the measuring equipment and to compensate for minor variations in the determination of the mass flow.
The method for calibrating heat flow is described in paragraph 10.2.4 of ISO 5660-1.
Calibration deviating by more than 5% from the previous calibration is abnormal and suggests a malfunction in the equipment. In this case, the equipment must be checked to identify the source of the deviation (leak, open cold trap, etc.).
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Characteristics determined during testing
Repeatability and reproducibility
Bibliography
- GUILLAUME (E.), MARQUIS (D.), SARAGOZA (L.), YARDIN (C.) - Incertitude sur la mesure par un « cône calorimètre » du dégagement de chaleur produit lors de la combustion d'un matériau – Uncertainty on heat release rate measurement with cone calorimeter during the combustion of a material. - Revue française de métrologie, n° 31, vol. 2012-3, p....
Standards and norms
- Reaction to fire tests – Heat output, smoke development rate and mass loss rate – Part 1: Heat output (cone calorimeter method) and smoke development rate (dynamic measurement). - ISO 5660-1 - 2015
- Railway applications – Fire protection for rail vehicles – Part 2: fire behavior requirements for materials and components. - NF EN 45545-2 - 2020
- GUM 1995 with minor corrections Evaluation of measurement data...
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