BS 476 non-combustibility test
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This machine is designed and manfacture according to ISO 1182 .Furnace temperature can quickly reach temperature equilibrium into the test program; temperature curve can print free.
Standards:
ISO 1182: building products --- in combustible fire reaction test
BS 476-4:Fire tests on building materials and structures - Part 4: Non-combustibility test for materials
BS 476-11:Fire tests on building materials and structures - Part 11: Method for assessment of the fire hazard of building products based upon the results of tests for ignitability, flame spread, heat release and smoke production
ASTM E 136: Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C
Features:
1. Intelligent test system with Patent design;
2. Stainless steel burner, beautiful and easy to clean;
3. The heating furnace size: Φ95 mm × Φ75 mm × 150 mm;
4. 3 mm × 0.2 m Ni 80% Cr 20% resistance band;
5. Air cover: Φ75 mm × 500 mm;
6. Thermocouple: insulated nickel-chromium - nickel - aluminum armored Φ1.5 mm ;
7. Equipment with the power controller;
8. The temperature balanced time at 750ºC is about 35min~40min;
9. Thermometers range: 0 ~ 1000 ºC ± 5%;
10. Equipped with mirror to see the internal of the furnace.
Parameters：
| Item | Specification |
|---|---|
| Gas used - Methane flow rate | (35 ± 0.5) L/min, purity > 95% |
| Gas used - Air flow rate | (17 ± 0.2) L/min |
| Specimen size | 4 specimens per test group |
| Thermocouple type | Nickel-chromium-nickel-silicon, wire diameter 0.5mm, outer diameter ≤ 3mm |
| Furnace wall temperature range | Room temperature to 100°C, ±1°C |
| Intake temperature range | 0 to (50 ± 0.5)°C |
| Pressure difference range | 0 to 30Pa, ±1Pa |
| Pressure difference measurement range | 0-100Pa, accuracy 0.2% |
| Temperature recorder and thermostat | Multi-channel continuous temperature recording and curve display |
| Constant temperature | (23 ± 2)°C |
| Constant current | (10 ± 1) m³/min |
| Ambient temperature range | 19 to 30°C |
| Power supply | 380VAC 50HZ |
| Dimensions of combustion shaft furnace (outer) | 1020mm x 1020mm x 3930mm |
| Dimensions of combustion shaft furnace (inner) | 800mm x 800mm x 2000mm |
Application:
The building materials non-combustibility test furnace is developed in accordance with the technical specifications and requirements stipulated in the national standard GB/T5464-2010. It is suitable for testing methods used to evaluate the combustion performance of building materials under specified laboratory conditions. It is applicable to testing the combustion performance classification of fire-resistant materials according to the GB8624 combustion performance classification of building materials.
Control System:
1. High degree of automation, test procedure safe and reliable, easy to operate;
2. To use of high-quality strip heater,furnace temperature was raised to 900 ºC;
3. PLC control system + SSR temperature control system extending the life of furnace;
4. PLC output signal to control the heating voltage is 0-110 VAC. Eliminate the influence of voltage fluctuation on temperature;
5. Temperature control: 750 ºC±2 ºC;Resolution:0.1ºC;
6. The samplies move up-down into the furnace automatically by motor;
7. 7 "touch screen for control parameter setting and display / test data acquisition and preservation / screen monitoring / real-time temperature curve shows / historical curve and data query;
8. With an audible alarm and alarm display functions accidents;
9. To equipped with printer, to print the temperature curve;
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