There is no big difference between domestic cone calorimeter and imported cone calorimeter.
The cone calorimeter made in China is a very important small-scale testing instrument in the field of fire prevention testing, and it is a fire testing tool based on the direct correlation between the heat released during combustion and the oxygen consumption during combustion.
meeting the standards:
ISO 566, ASTM E1354, ASTM E1474, ASTM E174, ASTM F155, ASTM D6113, NFPA 264, Canulc 135, BS 476 Part 15
Introduction:
1. It can learn small material samples (about 1×1mm×mm) to determine its flammability. The fire characteristics of cone calorimeter can be determined from several different standard models. The various test standards on the list are provided by UL Fire Safety Engineering Department as follows: ASTME1354ASTMD5485 Yes /ulc-s135ISO566-1- USA 271
2. Different types of calorimeters can be used to evaluate flammable materials in different aspects. The cone calorimeter can be used for product safety, environment and health services.
3. This equipment is very important when dealing with security issues. By using this equipment, it is easier to see how many different materials react with the fire. Knowing this information can easily protect those who come into contact with materials or work. It is to know and understand the important combustion heat, flammability, flammability and heat release, and to produce smoke for many materials to maintain a safe environment, all of which can be found by using calorimeter. Cone calorimeter is an experimental design, depicting real-world fires.
standard group (hong kong) has/is limited to the company and can provide it for a long time.
Test system:
1. Conical heater-in the truncated cone, 23V, 5W, heat output is 1 kW/m2;
2. Device for testing horizontal or vertical samples;
3.3 K-type thermocouples and 3-phase PID temperature controller regulate the temperature;
4. Opening and closing mechanism-protect the sample area before the test to ensure the stability of initial quality measurement, and the operator can have extra time to carry out system testing before the test begins. For flammable samples, it is easy to burn prematurely if there is no opening and closing mechanism. This extra time is very important to the operator;
5. sample holder-the sample size is 1mmx1mm, the thickness is not more than 5mm, and it is placed horizontally or vertically;
6. The load cell-mass measurement has passed the strain gauge load cell test, and the accuracy can reach .1g. Equipped with quick electronic weighing parts, the mechanical stop device can avoid damage caused by movement, give stable results and ensure the longevity of the instrument;
7. Spark ignition -1kV spark igniter, equipped with safety fire-stopping device. The igniter is automatically positioned by a lever connected to the closing mechanism;
8. exhaust system-made of stainless steel, which prolongs the service life. Comprises a cover, a gas sample sampling needle, an exhaust fan (the flow rate is adjustable from g/s to 5g/s, and the accuracy is at least .1g/s) and an orifice plate flow tester (thermocouple and differential pressure sensor). Common test is generally 24l/s;
9. gas sampling-including particle filter, freezing cold trap, pump, drying cylinder and flow controller;
1. oxygen analysis-paramagnetic oxygen analyzer, -25%, the performance meets the standard;
11. Smoke gloom-measured by laser system, using photodiode, .5mW He-Ne laser, main and standby photodetectors. At the same time, there are positioning brackets and .3 and .8 neutral density filters for calibration.
12. Heat flow meter-used to set the radiation level to the sample surface;
13. burner calibration-calibrate the heat release rate measured by the instrument, using 99.5% pure methane;
14. data acquisition-an Jie wheel data collector/converter, with 3-hole card slot and 61/2 digit internal DMM, capable of 12 single-ended measurement or 48 double-ended measurement. The scanning rate can reach 25 channels per second, with 115k baud RS232 and PCIGPIB interface. All readings are automatically recorded and stored in a stable 5,-reading memory.