EN ISO 1716 Reaction to fire tests for building products – Determination of the heat of combustion


The bomb calorimeter is the instrument most widely used to measure the heat of combustion or calorific value of a material. A test specimen of known mass is burned under standardised conditions.The heat of combustion, determined under these conditions, is calculated on the basis of the measured temperature rise while taking account of heat loss.


The combustion process is initiated in an atmosphere of oxygen in a constant


volume container, the bomb, which is a vessel built to withstand high pressures. The bomb is immersed in a stirred water bath, and the whole device is the calorimeter vessel.The calorimeter vessel is also immersed in a second outer water bath.The water temperature in the calorimeter vessel and that of the outer bath are both monitored and used in the calculation.The test is used to qualify products for the classes Aca


The FTT Oxygen Bomb calorimeter consists of: ■


Bomb calorimeter with embedded computer control, user-friendly interface, LCD graphics display, high accuracy / resolution PRTs, RS232 interface port for printer and programming


■ Oxygen bomb and bucket (calorimeter vessel)


■ Thermostatically controlled bath, circulator, cooler, pipette (2L) ■


■ Printer (optional)


EN ISO 1716 sample preparation device, firing wire & cotton, cigarette making device


Why FTT?


FTT has been at the forefront of test instrumentation development in reaction to fire applications for over 20 years and now sets the benchmark in this field of testing. FTT’s production and design facility in the UK continues to develop bench-scale instrumentation and large-scale tests for a wide range of regulatory requirements and offers a worldwide sales and technical support service.


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8