Scope of application: It is applicable to fire resistance tests of building components and the fire resistance performance of load-bearing vertical partition components.
Working voltage: AC 380V±10% 50NZ.
The furnace body: The test furnace passage is composed of bricks, steel structures and fireproof and heat-insulating materials.
Sample size: 300mm wide × 300mm high (customizable).
The dimensions inside the furnace are approximately:
Vertical furnace: L3.2m×W2.2m×H4.0m
Horizontal furnace: L3.2m×W3.2m×H1.5.
Gas flow rate: 0-100L/min, measurement accuracy 2.5 grade.
Air flow rate: 0-50m ³ /min, measurement accuracy ≤±0.5m ³ /min.
Gas tank capacity: ≥50kg×6.
Load measurement equipment: ±2.5% of the load value should be added (required for loading type tests).
Specimen gap measurement probe: ±0.1mm for diameter 6mm, ±0.2mm for diameter 25mm.
Combustion system: Gas distribution system (within 10 meters), burner nozzles (no less than 20) and regulating valves.
Combustion gas source: propane, liquefied gas.
Furnace temperature control system: Maximum sampling points of 10.
Ventilation systems and control dampers, etc.
The measurement range of radiant heat on the backfire side of the specimen is 0 to 10W/cm ².
Furnace pressure measurement range: 0 to 100pa
Measurement accuracy: ≤±3pa.
Test temperature: The furnace temperature control meets the requirement of T-T0=3451g (8t+1), and its temperature control deviation
When 0min < t≤10min, d≤15%.
When 10 minutes < t≤30 minutes, d≤10%.
When T > 30 minutes, d≤5%.
Furnace temperature: ±15°C.
Internal temperature of the specimen: ±10°C.
Backfire temperature of the specimen: ±4°C.
Measurement conditions for pressure inside the furnace
Five minutes after the start of the test, the furnace should meet the following positive pressure conditions as stipulated.
Horizontal component - On a horizontal surface 100mm below the bottom surface of the specimen, the furnace pressure is 15pa±5pa.
Vertical component - at a height of 3 meters inside the furnace, 100mm from the surface of the test piece. The furnace pressure is 15pa±5pa.
Ten minutes after the start of the test, the furnace should meet the following positive pressure conditions as stipulated.
Horizontal component - On a horizontal surface 100mm below the bottom of the specimen, the furnace pressure is 17pa±3pa.
Vertical component - at a height of 3 meters inside the furnace, 100mm from the surface of the test piece. The furnace pressure is 17pa±3pa.
Furnace temperature: ±15°C, using a thermocouple with a diameter of 1mm.
Test piece backfire temperature: ±4°C, thermocouple with a wire diameter of 0.5mm.
Armored platinum-rhodium-platinum S-value thermocouple, accuracy grade II.
Armored nickel-chromium-nickel-silicon K value thermocouple, grade II.
Timing range: 0 to 120 minutes. Timing accuracy: < ±1 second.
Sample temperature detection system: Maximum sampling points of 20.
Scope of application: The test furnace complies with the technical indicators and requirements stipulated in the national standard GB/T7633-2008 and is suitable for the fire resistance performance test of non-load-bearing horizontal doors and roller shutters.
Main parameters
Power consumption: 6KW
Furnace pressure measurement range: 0-100Pa measurement accuracy: ≤±3Pa
Air flow rate: 0-50m³/min Measurement accuracy: ≤±0.5 m³/min
Combustion gas source: Propane, liquefied gas (provided by the user)
Gas tank capacity: 50kg×6
Measurement range of radiant heat on the backfire side of the specimen: 0-10W/cm ²
Pressure measurement range inside the furnace: 15Pa±5Pa;
Test temperature: Programmed temperature rise for 15 minutes from room temperature to 718℃
30 minutes room temperature to 821℃, 60 minutes room temperature to 925℃
90 minutes room temperature to 986℃; 120 minutes room temperature to 1029℃;
180 minutes at room temperature to 1115℃, 240 minutes at room temperature to 1150℃.
Temperature sensor: Inside the furnace: 9 armored nickel-chromium-nickel-silicon K value thermocouples, accuracy grade: Class II
Backfire: 29 armored nickel-chromium-nickel-silicon K value thermocouples, accuracy grade: Class II
Timing range: 0-240 minutes. Timing accuracy: <±1 second
External sample size: (Special specifications can be customized by users)
The practical area of the equipment: length × width × height (3.8×2.4×4.5)m;
Equipment weight: 4500 Kg(The test furnace needs to be installed on site);
Gasification system: 150kg/h(optional).
ISO 9705:2003 specifies a test method for simulating a fire that occurs in the corner of a small room. This method uses a standard ignition source and aims to assess the impact of surface products on the development of the fire. This method provides data on the fire from ignition to burling-through that occurs under the standard ignition source. ISO 9705:2003 also introduces different measurement techniques both inside and outside the room. The ISO 9705 test in this article provides background information and support for potential users. It provides users with technical information on fire source testing, the heat flux of the burner in the room, the thermal balance of the room during a fire, the types of smoke and toxic gases produced, as well as the simulation results of these tests. It offers users the necessary information to help them select test steps for specific projects or regulations.
The test method in our country is equivalent to adopting this test method, and the developed standards are Appendix B and Appendix C of GB 20286.
Compliant standards: ISO 9705, NFPA 266, Appendix B and Appendix C of GB20286, etc
Technical parameters
1. 19-inch instrument frame, including oxygen, carbon dioxide and carbon monoxide analyzers
2. The oxygen analyzer is an oxygen analyzer that detects the oxygen concentration in the gas by measuring the changes in paramagnetic pressure. Response time (T90) : 3.5 seconds, internal signal processing time: less than 1 second, pressure sensor (internal) : 50 to 200 kPa, zero drift: less than 0.5% of the minimum range indicated on the nameplate per month, measurement value drift: less than 0.5% of the current measurement range per month, repeatability error: less than 1% of the current measurement range The minimum detection limit is 1% of the current measurement range, and the linear error is less than 1% of the current measurement range
3. The carbon dioxide analyzer and carbon monoxide analyzer are non-discrete infrared types. The principle is based on the fact that gas molecules have specific infrared light absorption bands, and they adopt the single-beam alternating infrared analysis method. The minimum detection limit is 1% of the current measurement range. The linear error is less than ±1% of the full scale when measured within the maximum range. The repeatability is less than ±1% of the minimum range indicated on the nameplate. The response time (T90 time) is less than 30 seconds when the sample gas flow rate is approximately 1.2L/min
4. The range of the oxygen analyzer is 0-25%, that of the carbon dioxide analyzer is 0-10%, and that of the carbon monoxide analyzer is 0-1%
5. A temperature controller is used to control the cold trap. During the gas extraction process of the test, the moisture is thoroughly removed
6. The gas sampling dual-head pump can transport the gas samples produced during combustion to an analyzer approximately 30 meters away
7. Data acquisition system (including operation and control programs)
8. The acquisition board card adopts a 16-bit wide gain range and analog and digital I/O boards
9. Thermocouple type: K type, range: Ambient temperature to 1500 degrees Celsius.
10. The data acquisition system can collect data by installing and starting a data logger or on-site pointer
11. The data acquisition system consists of the following parts
12. Bit thermocouple input module, 16-bit analog input module, digital input/output module, 12-bit analog output module, 4 and 8-slot base plates, connection sockets, network module, 24-volt 5A DC universal power supply input, data acquisition computer, printer
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