Modern fire science studies have shown that the heat release rate of materials is an important factor in fire hazard analysis. It not only plays a decisive role in the development of fire, but also affects other fire disaster factors. The heat release rate of the material is also the most important parameter in the combustion performance of the material. It is extremely important to measure the heat release rate during the combustion process of the material more accurately for predicting the fire hazard and its flame retardant prevention and treatment. The EN ISO5560-1 standard is the most commonly used test standard for the heat release rate of combustion, and many standards use the ISO5660-1 standard for fire performance evaluation.
Cone Calorimeter (CONE) is one of the most important instruments in the field of fire science research. It can not only be used to study the combustion performance of various materials or products to evaluate the combustion behavior of materials or products, but also the measured data is the most important data source for performance-based fire design and fire modeling.
The name of Cone Calorimeter is derived from the conical heater as used by Dr. Vytenis Babrauskas to inspect test specimen (100mm x 100mm) with flux up to 100kW/m2 for the bench scale oxygen depletion of his development. Cone Calorimeter test is based on the theory that pure combustion calories are in proportion to a necessary amount of oxygen for combustion and 13.1 MJ/kg is generated whenever oxygen 1kg is consumed, and heat emission, ignition time, oxygen consumption, CO and CO2 generation, and flow of ignited gases as generated from test materials are measured.
The cone calorimeter measures the heat release rate (H.R.R), smoke emission, ignition time, oxygen consumption, carbon monoxide and carbon dioxide production and mass loss rates when samples are exposed to a cone heater resource.
Application: Suitable for testing the heat release rate of building materials, Rail,Wire Cable
Test Principle
The surface of the specimen is exposed to a steady thermal radiation generated from a conical heater in the range of 0-100 kW/m2. Volatile gases escape from the heated sample and are ignited by the spark-initiating device. The combusted gases are collected by the cooker hood for further analysis. Analysis of this gas allows calculation of heat release rates and assessment of smoke toxicity. Smoke production is assessed by measuring the light attenuation of smoke in the exhaust pipe. The attenuation is related to the volume flow and is expressed in [m2/s].
This specimen is mounted on a load cell to record the mass loss rate of the specimen during combustion.
A comprehensive analytical test requires several radiation levels. Typical radiation levels are 25, 35, 50 and 75 kW/m2. According to the ISO 5660-1 standard, at each heat flux level, three samples are required to be tested.
The cone calorimetry test is not yet implemented in the Norwegian Fire Code classification, but is well suited for quantifying the response of materials to fire. The test results can provide a reference on how to improve the performance of the product in terms of fire protection.
Product Features
The data acquisition system be able to record oxygen analyzer, orifice meter, thermocouple and other instruments of the output.
Cone Calorimeter with movable analysis cabinet, can be connected with a large heat release rate test system such as ISO 9705, EN 13823 etc, complied with ISO 5660, ASTM E1354,BS 476 Part 15 etc. testing standards.
Smoke density analysis using laser system, the system consists of a 0.5mW He Ne laser, the main detector and auxiliary detector.
The exhaust system consists of the fan, the smoke collection cover, the exhaust pipe and orifice plate flow meter and so on. Exhaust fan flow rate of 0 ~ 50g/s, precision 0.1g/s.
Integrated test body and 19 inches analysis cabinet, embedded PC 15 Inch Touch screen computer, for the whole control and automatic testing.
Overview of the ISO 5660-1 standard
Cone calorimetry is currently the most advanced method for evaluating the response of materials to fire. The test is based on the oxygen consumption principle of material combustion, that is, the heat generated by the consumption of unit mass of oxygen when the measured material and oxygen are completely burned.
The method is determined according to the international standard ISO 5660-1.
In addition, smoke production and smoke toxicity can be measured during the test.
The test mainly evaluates the following test items:
# 1 Flammability;
# 2 flame spread;
3 The amount of smoke produced;
4 Smoke toxicity
Standards compliant
ASTM:ASTM D6113,ASTM E1354,ASTM E1740,ASTM F1550
-ISO 5660 fire reaction test, heat release rate, smoke rate and mass loss rate;
-ASTM E1354 Determination of heat and visible smoke release rate of materials and products using an oxygen consumption calorimeter;
-BS 476 Pt.15 combustion and structure test of building materials, determination of product heat release rate;
EN:EN 45545-2: 2013
GB:GB/T 16172:2007
More details please refer to http://www.skylineinstruments.com/ISO5660-Cone-Calorimeter.html
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