DX8342 Building Component Fire Resistance Testing Machine

Scope of application: Suitable for fire resistance testing of building components and the fire resistance performance of load-bearing vertical partition components.
Working voltage: AC 380V ± 10% 50NZ.
Furnace body: The experimental furnace passage is composed of bricks, steel structure, and fire insulation 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×H1.5m.
Gas flow rate: 0-100L/min, with a measurement accuracy of 2.5 levels.
Air flow rate: 0-50m3/min, measurement accuracy≤±0.5m³/min.
Gas tank capacity: ≥ 50kg×6.
Load measurement equipment:±2.5% of the load value should be added (required for loading type tests).
Test piece gap measurement probe: with a diameter of 6mm±0.1mm and a diameter of 25mm±0.2mm.
Combustion system: gas distribution system (within 10 meters), nozzle (not less than 20), and regulating valve.
Combustion gas sources: propane, liquefied gas.
Furnace temperature control system: maximum sampling point of 10 points.
Ventilation system and control air valves, etc.
The measurement range of radiation heat on the back fire surface of the specimen is 0~10W/cm2.
Furnace pressure measurement range: 0-100pa
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 10min<t≤30min,d≤10%.
When T>30min, d≤5%.
Furnace temperature:±15℃.
Internal temperature of the specimen:±10℃.
Test piece back fire temperature:±4℃.
Measurement conditions for furnace pressure:
After 5 minutes of the experiment, the furnace should reach the following specified positive pressure conditions.
Horizontal component - on a horizontal plane 100mm below the bottom of the test-piece, the furnace pressure is 15pa±5pa.
Vertical component - located at a height of 3m inside the furnace and 100mm away from the surface of the test-piece. The furnace pressure is 15pa±5pa.
After 10 minutes of the experiment, the furnace should reach the following specified positive pressure conditions.
Horizontal component - on a horizontal plane 100mm below the bottom of the test-piece, the furnace pressure is 17pa±3pa.
Vertical component - located at a height of 3m inside the furnace and 100mm away from the surface of the test-piece. The furnace pressure is 17pa±3pa.
Furnace temperature:±15℃, using a thermocouple with a diameter of 1mm.
Test piece back fire temperature:±4℃, with a thermocouple with a wire diameter of 0.5mm.
Armored platinum rhodium platinum S-value thermocouple, accuracy level II.
Armored nickel chromium nickel silicon K-value thermocouple, Class II.
Timing range: 0-120min Timing accuracy: ＜±1s.
Sample temperature detection system: maximum sampling point of 20 points.

Scope of application: The test furnace meets the technical indicators and requirements specified in the national standard GB/T7633-2008, and is suitable for the fire resistance performance test of non load bearing horizontal doors and rolling 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 (user provided)
Gas tank capacity: 50kg × 6
Measurement range of radiation heat on the back fire surface of the specimen: 0-10W/cm²;
Measurement range of furnace pressure: 15Pa ± 5Pa;
Test temperature: Program temperature rise for 15 minutes, room temperature~718 ℃,
30min room temperature~821 ℃, 60min room temperature~925 ℃,
90min room temperature~986 ℃; 120min room temperature~1029 ℃;
180min room temperature~1115 ℃, 240min room temperature~1150 ℃;
Temperature measurement sensor: inside the furnace: 9 armored nickel chromium nickel silicon K-value thermocouples, accuracy level: II
Backfire: 29 armored nickel chromium nickel silicon K-value thermocouples, accuracy level: II
Timing range: 0-240min Timing accuracy:<± 1s
External sample size: (special specifications can be customized by users)
Equipment practical area: long × wide × High (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 testing method for simulating a fire that occurs in the corner of a small room. This method uses a standard ignition source and aims to evaluate the impact of surface products on the development of the fire. The method provides data on the burning through of a fire that occurs under a standard ignition source from ignition to burning through; ISO 9705:2003 also introduces different measurement techniques inside and outside the room. The ISO 9705 experiment 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 heat balance of the room in a fire, the types of smoke and toxic gases produced, and the simulation results of these tests. It provides users with necessary information to help them choose test steps for specific projects or regulations.
The testing method in our country adopts this testing method equivalently, and the developed standards are Appendix B and Appendix C of GB 20286.
Compliant with standards: ISO 9705, NFPA 266, GB20286 Appendix B and Appendix C, etc

Technical parameters:
1. 19 inch instrument rack, including oxygen, carbon dioxide, and carbon monoxide analyzers
2. The oxygen analyzer uses the method of measuring the change in paramagnetic pressure to detect the oxygen concentration in the gas. Response time (T90) 3.5 s, internal signal processing time<1 s, pressure sensor (internal) 50-200 kpa, zero drift<0.5% of the minimum range on the nameplate/month, measurement drift<0.5% of the current measurement range/month, repeatability error<1% of the current measurement range, minimum detection limit<1% of the current measurement range, linear error<1% of the current measurement range
3. The carbon dioxide analyzer and carbon monoxide analyzer are non discrete infrared type, based on the principle that gas molecules have specific infrared light absorption bands, and adopt a single beam alternating infrared analysis method. The minimum detection lower limit is 1% of the current measurement range. When the linear error measurement is within the maximum range, it is less than±1% of the full range. The repeatability is less than ± 1% of the minimum range 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%, the range of the carbon dioxide analyzer is 0-10%, and the range of the carbon monoxide analyzer is 0-1%
5. Using a temperature controller to control the cold trap, during the gas extraction process of the experiment, sufficient moisture is removed
6. Gas sampling dual head pump, capable of transmitting gas samples generated during combustion to an analyzer approximately 30 meters away
7. Data collection system (including operation and control programs)
8. The acquisition board adopts a 16 bit wide gain range, with analog and digital I/O boards
9. Thermocouple type: K-type, range: ambient temperature~1500 degrees Celsius
10. The data collection system can be started by installing data recorders or on-site pointers to collect data
11. The data collection system consists of the following components:
12. Bit thermocouple input module, 16 bit analog input module, digital input/output module, 12 bit analog output module, 4 and 8 slot baseboards, connection socket, network module, power supply 24V 5A DC universal power input, data acquisition computer, printer.