ISO 9705 Building Material Room Corner Burning Test Machine ASTM E 603 Fire Resistant

ISO 9705 Building Material Room Corner Burning Tester Product Introduction:

As one of the core test methods of ISO 9705 standard, the corner fire tester provides a highly reliable test method for fire performance evaluation of building and decoration materials by simulating full-scale corner fire scenes. The test system is equipped with an independent gas analysis control platform, integrating key instruments such as heat release rate measurement module, paramagnetic oxygen sensor, CO₂/CO gas analyzer and incandescent smoke density measurement system, which can fully quantify the thermodynamic and toxic smoke characteristics of the material combustion process.

Like the cone calorimeter and SBI (single burning item), its test principle is based on the oxygen consumption method, but the actual application scenario is restored by a 1:1 ratio - the specimen is required to be arranged strictly according to the actual installation method (such as full wall coverage and open top), so that the data is closer to the actual project. This full-scale test is particularly suitable for complex materials whose combustion behavior cannot be accurately reflected by small-scale tests. The propane burner is used to simulate the radiation fire source, and the core parameters such as heat release rate, flashover time, temperature distribution, and gas product concentration are accurately recorded. Among them, the heat release rate and flashover time are regarded as key indicators for evaluating the fire hazard of materials.

Although this test is mostly used in fire science research or high-precision certification testing due to the large sample volume required and complex condition control, its ability to reproduce real fire environments makes it one of the authoritative methods for assessing the fire rating of building materials.

ISO 9705 Building Material Room Corner Burning Tester Standards:

• ISO 9705: Large chamber test for surface products • ISO 13784-1: Fire reaction test for plywood building systems
• ASTM E 1537: Standard method for fire tests on upholstered furniture
• ASTM E 603: Standard guide for corner fire tests
• GB/T 25207-2010 "Solid room fire test methods for surface products"

ISO 9705 Building Material Room Corner Burning Tester Technical Specification:

ISO 9705 Building Material Room Corner Burning Tester Structural Features:

1. The interior of the test room is made of 700kg/m³ refractory material, and its combustion performance meets the requirements of A1-level fireproof materials. (Optional)
2. The internal dimensions of the room are: 3.6M long * 2.4M wide * 2.4M high; (Optional)
3. The room structure is built with square steel keels, with stainless steel plates on the outside and calcium silicate boards on the inside; a stainless steel escalator is installed on the outside of the room to facilitate the maintenance of the smoke pipe test system. (Optional)
4. The door is located in the center of a 2.4*m2.4m wall, and there are no ventilation holes on other walls, floors and ceilings. The door size is: 0.8M (W) * 2.0M (H); (Optional)
5. The system automatically ignites and automatically records relevant experimental data;
6. Independent movable timing display table.
7. 10KV spark generator with safety cut-off device; the ignition timer can be timed in segments, with a display resolution of 1s and a timing error of less than 1s/h; the accuracy of the calibrated burner flowmeter should be ±2% of the reading.
8. Stainless steel propane sandbox burner; the burner is filled with porous, inert materials. The gas flow is controlled by an imported mass flow meter with an accuracy of less than 2%;
9. The system automatically ignites; automatically times; and automatically shuts off the gas and extinguishes the flame;
10. Fire extinguishing and drainage system design. Bipolar gas flow valve control system; avoids system leakage caused by solenoid valve failure, which may lead to explosion risks;
11. The 304 stainless steel sandbox propane burner specified in the standard is resistant to high temperature oxidation corrosion.
12. Stainless steel smoke hoods and exhaust pipes are beautiful and corrosion-resistant.
13. Staircase design facilitates exhaust pipe inspection and maintenance.
14. Variable frequency fan + imported inverter, precise control of wind speed; smoke exhaust capacity is not less than 3.5m³/s;
15. Wind speed probe: made of 316 stainless steel, 32mm long, inner diameter is φ14mm;
16. Stainless steel smoke hood 3m*3m to ensure no smoke leakage;
17. Smoke exhaust capacity is not less than 3.5m³/s, the smoke exhaust fan can be adjusted to ensure that the smoke hood can collect all the smoke;
18. Taiwan Delta inverter + variable frequency fan, control the exhaust rate (0.6±0.05) m³/s; step change response time is less than 1s;

Gas sampling system:

1. High-precision patented sampling system; ensure that the sampled gas entering the gas analyzer is stable and free of impurities; make the analyzer analysis results more accurate;
2. The sampling probe with dense pores made of inert materials detects oxygen concentration, CO, and CO2 concentrations. The compressed gas can automatically purify the sampling probe;
3. Including particulate filter; three-stage filtration system; filtration accuracy 0.3um;
4. Cold trap: compressor principle refrigeration system; gas sampling temperature control 0~5℃; domestic first-line brand, protect the stability and life of the analyzer;
5. German imported suction pump: provide gas sampling power source, flow rate 30L/min;
6. Drying cylinder: dry and remove impurities for oxygen and nitrogen dioxide analysis gas paths respectively;
7. Exhaust system: the exhaust hood is made of stainless steel, the diameter of the stainless steel pipe is 400mm, which can be customized according to customer requirements.
8. High-precision ball valve: open and close the gas path and have automatic gas cut-off.
 

Gas analysis system parameters:

1. Imported paramagnetic oxygen analyzer for combustion test from Servomex, with a range of 0-100%, inherent error <0.02%, repeatability <0.01%; response time <7s;
2. CO2 range: 0~10%, error: 1%FS, repeatability <1%, response time <7s;
3. (CO range 0~1%, error: 1%FS, repeatability 1%FS, response time 8s)---optional;
4. Burner calibration system-calibrate the heat release rate tested by the instrument, using propane with a purity of more than 95%; imported propane mass flowmeter accurately controls the propane flow to calibrate the burner heat output.
5. Equipped with a water cooling system; used to cool the imported heat flowmeter when it is working;
6. Imported mass flowmeter controls the gas flow, with an accuracy of 2%; the heat output is 100kw in the first 10 minutes, and the burner heat output is 300kw after 10 minutes without a bang

Calibration system:

1. Large combustion heat release test calibration system. Propane calibration system is used, and the maximum heat release can be calibrated to 5MW.
2. One-button 5-level optical system calibration system. 0%, 25%, 50%, 75%, 100%;
3. Provide wind speed calibration system;
4. Photoelectric receiver imported from the United States: wavelength range 350-1100nm, peak response: 0.65A/W, gain adjustment 70dB;
5. The lens focuses the light into a 20mm parallel beam; d/f＜0.04; chromaticity standard function accuracy ±5%; output linearity is within 3% of transmittance or within 1% of absolute transmittance;
6. The response time of 90% of the system does not exceed 3s; the system time recording accuracy is 0.1s; the system recording time can be set, minimum 1s;
7. Omega thermocouple imported from the United States, accuracy 0.1 degrees Celsius. Fast temperature acquisition speed and durable life.
8. Micro differential pressure sensor imported from the United States, range 0~2000pa. Accuracy: ±1%FS, hysteresis ±0.1%FS, maximum linear pressure 69Kpa, resolution 1pa, sensor 90% output response time up to 1s;
9. Metherm thermopile heat flow meter imported from the United States - used to set the radiation level on the sample surface; and equipped with a water cooling system to safely protect the heat flow meter. Design range 0^100k W/m², the accuracy of the heat flow meter is ±3%, and the repeatability is ±0.5%

Test Results:

1. Floor center heat flow-time curve
2. Volume flow-time curve in smoke exhaust duct
3. Heat release rate-time curve
4. CO production-time curve
5. CO2 production-time curve
6. Smoke concentration production-time curve
7. Video monitoring of fire development
8. Calibration results
9. Whether a loud bang occurs and the time of the loud bang