I. Scope of Application
The calorific value tester for building materials, also known as a calorimeter, is a test for determining the calorific value of building materials in an oxygen bomb calorimeter with a constant heat capacity. Including total combustion calorific value and net calorific value.
Ii. Execution Standards:
It complies with the test standards of GB/T14402-2007 "Combustion Performance of Building Materials and Products - Determination of Combustion calorific Value" and ISO1716-2002 "Fire Reaction Test of Building Products - Determination of Combustion calorific Value".
Iii. Main Technical Parameters
Total calorific value of combustion: 30,000,000 J/Kg(30MJ/kg)
2. Repeatability error of combustion calorific value: dynamic ≤0.1%
3. Temperature measurement range: 0 to 50℃.
4. Temperature resolution: 0.0001℃, using PT100 sensor
5. Oxygen bomb volume: 300ml. The mass is 3.2 kilograms
6. Inner cylinder volume: 2200ml
7. The oxygenation pressure of the oxygen bomb is 0 to 3.5Mpa without any leakage.
8. Oxygen bomb pressure resistance: ≥21Mpa water pressure.
9. Stirring power: 3W.
10. Stirring speed for the inner cylinder: 375r/min.
11. Power Supply: AC185-245V.
12. Two crucibles (stainless steel).
13. Oxygen bomb.
14. One roll of ignition wire.
15. Including the crucible method and the cigarette method
16. It includes a set of device for preparing "cigarettes"
17. Temperature rise data and time automatically recorded by the system; The system can be determined based on the input heat capacity, sample mass and additional heat, etc
Automatic data input
Perform temperature correction and total calorific value calculation, and provide the results. The computer of the experimental device is equipped with icon display function, curve display, Excel data table, printing function, data input and command control function. To improve the system, the computer system can incorporate functions such as fault alarm and warning alarm.
18. Ignition circuit: It adopts a voltage of 12V, an adjustable current of 100mA, and the ignition wire is an iron wire with a diameter of 0.1mm.
19. Thermal systems with absolute heat and isothermal calorimetry systems
20. The total calorific value and net calorific value can be directly read out without calculation
21. One set of computers and one printer
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