Scope of Application

【Operating Instructions】

This is a specialized testing instrument designed to evaluate the reaction to fire of building materials or products (excluding flooring materials) in a single burning item (SBI) test, in order to determine their inherent physical properties. The apparatus meets the national standard requirements for test conditions and is based on standardized test procedures (methods).Through testing, the apparatus determines the combustion performance (grade) of the sample, including quantitative and qualitative test parameters: the heat release rate of the sample, whether lateral flame spread occurs, the total smoke production (smoke performance), and whether the sample produces flaming droplets or particles during combustion.

YS-JC-1 Single Burning Item (SBI) Test Apparatus for Building Materials and Products

Applicable Scope:
This is a specialized testing instrument designed to evaluate the reaction to fire of building materials or products (excluding flooring materials) in a single burning item (SBI) test, in order to determine their inherent physical properties. The apparatus meets the national standard requirements for test conditions and is based on standardized test procedures (methods).

Through testing, the apparatus determines the combustion performance (grade) of the sample, including quantitative and qualitative test parameters: the heat release rate of the sample, whether lateral flame spread occurs, the total smoke production (smoke performance), and whether the sample produces flaming droplets or particles during combustion.

This apparatus features multiple testing functions, providing quality inspection departments and enterprises with a highly cost-effective testing tool.

• This technical data cannot be used as a basis for making any claims against our company.

• Our company reserves the right of final interpretation of this technical data.

• Our company reserves the right to change the design while meeting customer requirements.

Compliance Standards:
GB/T 20284-2006 "Single burning item (SBI) test for building products"

Technical Parameters:

1. System Temperature Measurement Range: 0 - 400℃; Measurement Accuracy: ≤ ±0.5℃

2. System Pressure Difference Measurement Range: 0 - 100 Pa (MAX); Measurement Accuracy: ≤ ±2 Pa

3. Exhaust Flow Rate Measurement Range: 0.25 m³/s - 0.8 m³/s (MAX); Measurement Accuracy: ≤ ±1.5%

4. Gas Flow Control Accuracy: < 647 mg ± 10 mg

5. Oxygen Analysis (Paramagnetic Type) Range: 16% - 21%, Response Time: < 12 s

6. Carbon Dioxide (IR Type) Measurement Range: 0% - 10%, Linearity: > 1% of full scale

7. Optical Density Measurement: Measurement Range: 0% - 99.9%; Measurement Accuracy: Within ±5% of the filter value

8. Relative Humidity Measurement: Range: 20% - 80%, Accuracy: ≤ ±5%

9. Fuel: Commercial propane gas, purity ≥ 95% (provided by the user)

10. Power Supply: AC 380V, 6 kW

11. Equipment Footprint (Combustion Chamber & Exhaust Duct Dimensions): 6100 mm × 5500 mm × 4600 mm (L × W × H)

12. Combustion Chamber Dimensions: 3000 mm × 3000 mm × 2500 mm (L × W × H)

13. Network Connectivity: Accessible via LAN

14. Ignition Failure Alarm System: Equipped
    a. Main (auxiliary) burner ignition method - Fully automatic electronic igniter
    b. Safety Measure 1 - Explosion-proof solenoid valve
    c. Safety Measure 2 - High-frequency response flame detector
    d. Safety Measure 3 - High-frequency electronic igniter
    e. Safety Measure 4 - Domestic well-known brand gas hose
    f. Safety Measure 5 - Explosion-proof electrical isolation box
    g. Combustion Chamber Footprint - 3000 × 3000 × 4300 (mm)
    h. Control Cabinet & Computer Desk - 1200 × 800 × 1200 (mm)
    i. Required Laboratory Area for System - 6000 × 5500 × 4600 (mm)
    j. Total System Power - 380V, 6 kW; Equipment cable length extends 2 m outside the device
    k. Chamber Structure - All-steel frame, steel plate with powder coating or stainless steel cladding
    l. This system is fully computer-controlled. It does not include oxygen and propane cylinders for testing.

Test Items:

1. Heat release rate of the material (product)

2. Total smoke production of the material (product)

3. Lateral flame spread (rate) of the material (product)

4. Droplets and particles of the material (product)

System Composition and Features:
Introduction to Apparatus Composition:
The DT-1 SBI Test Apparatus includes: a control system, combustion chamber, specimen mounting trolley, burner, flue and exhaust system, analysis and measurement system, and a dust removal device.

Test Principle:
The long and short wing specimens (building materials) are fixed in an L-shape on a trolley. The trolley is pushed into the combustion chamber, and the fan is started. The volume flow rate in the exhaust duct is adjusted to the specified range using a frequency converter. The auxiliary burner away from the specimen is ignited to determine its own heat release rate. The auxiliary burner is then turned off, and the main burner is ignited with the same mass flow rate of gas. Through a 20-minute test, the heat release and smoke production of the building materials are calculated and evaluated, and lateral flame spread, flaming droplets, and particles are observed.

Introduction to Components and Features:

1. Combustion Chamber: Our company offers two structures for the combustion chamber, allowing users to choose freely. One is a brick-concrete structure, and the other is a steel plate frame structure. The brick-concrete structure is safe, sturdy, durable, has good thermal insulation, and looks neat and beautiful, but it is troublesome to build and inconvenient to disassemble. The steel plate frame structure is easy to disassemble and assemble, but it is less sturdy and durable. Long-term combustion tests may cause heat deformation, poor sealing, oxidation and discoloration of the wall steel plates due to high temperatures, and a shorter service life.

2. Flue and Exhaust System: This part consists of a gas hood, exhaust duct, measurement duct, exhaust fan, etc. The measurement duct features a double-layer structure with insulation in the middle, strictly complying with standard requirements to ensure the accuracy of data measurement and collection. The data collection section of the exhaust duct is equipped with sensors to measure temperature, light attenuation, O2 and CO2 concentrations, and pressure difference. The collected data is calculated and evaluated. A 5.5 kW centrifugal induced draft fan is used, which fully meets the wind speed and volume requirements for the test.

3. Combustion System: The combustion gas is high-purity commercial propane. A mass flow controller precisely controls the propane gas supply. Solenoid valves control the delivery of combustible gas. A high-frequency electronic igniter and ignition needle are used for automatic ignition, with an optional flame detector to verify the ignition result. Additionally, the equipment is equipped with sufficient safety measures. First, all combustible gas delivery and control components are configured in a separate, isolated explosion-proof box.

4. Analysis and Measurement System:

1. Oxygen and Carbon Dioxide Analyzer: This analyzer is a key measuring element of the apparatus. Its accuracy meets standard requirements. It is directly mounted on the control cabinet, and measurement data is displayed directly on the LCD screen, making it very intuitive and easy to operate. The rear panel is equipped with a dedicated calibration port, making it very convenient for users to perform later calibration.

2. Pressure and Temperature Measurement: Duct pressure is measured using a pressure transmitter, and duct gas temperature is measured using a thermocouple. An integrated temperature, humidity, and atmospheric pressure transmitter is used to measure the temperature, humidity, and atmospheric pressure indicators of the combustion chamber.

3. Smoke Density Analyzer: This analyzer consists of a light-emitting unit and a light-receiving unit. It analyzes the smoke density in the duct based on how much the emitted light wave is blocked by the smoke in the duct. The analyzer is equipped with a self-calibration program, allowing for calibration at any time to further ensure measurement accuracy.

5. Control System: Composed of a control desk and a microcomputer system. The entire apparatus is automatically controlled by a computer.

Apparatus Installation Dimensions:
If the dust removal device is placed indoors, the indoor dimensions (L × W × H) should be ≥ 7500 × 7500 mm × 4500 mm; if the dust removal device is placed outdoors, the indoor dimensions (L × W × H) should be ≥ 6000 × 4500 mm × 4500 mm.

Installation Requirements:

1. Space Requirements:
   a. External Dimensions: Combustion chamber dimensions: 3000 mm × 3000 mm × 4500 mm (L × W × H)
   Weight: 2 tons
   b. Test Bench: Equipment footprint: 6100 mm × 5500 mm × 4500 mm (L × W × H)
   Laboratory dimensions: Length 8 m × Width 6 m × Height not less than 5 m; Door height not less than 3 m, Width 2.5 m

2. Power Supply Requirements:
   a. Voltage: Three-phase 380V + 10%, 50Hz
   b. Power: 5 kW

3. Water Supply: None

4. Gas Supply:
   Propane gas with purity not less than 95%, equipped with a pressure reducing valve, used for equipment combustion.
   Additionally, prepare one cylinder each of pure nitrogen (99.999%) and carbon dioxide (9.5%) for controller calibration.

5. Pollutant Description: Smoke and dust

6. Ventilation Requirements:
   Exhaust fan + dust removal
   The equipment's exhaust duct needs to be connected outdoors or integrated into a smoke and dust treatment/purification system.

7. Other Requirements: Due to the large size of the equipment, a forklift is required for unloading.