Scope of Application

【Operating Instructions】

Developed according to the technical specifications and requirements of the national standard GB/T 5464-2010, this test furnace is suitable for evaluating the combustion performance of building materials under laboratory conditions. It is specifically applicable for testing the combustion performance classification of Class A fire-resistant materials within the GB 8624 grading system.

YS-JCB-3 Dual-Control Building Material Non-Combustibility Test Furnace with Automatic Sampling

Scope of Application

Developed according to the technical specifications and requirements of the national standard GB/T 5464-2010, this test furnace is suitable for evaluating the combustion performance of building materials under laboratory conditions. It is specifically applicable for testing the combustion performance classification of Class A fire-resistant materials within the GB 8624 grading system.

Compliance Standards

• GB/T 5464-2010

• GB/T 8624

• ISO 1182 "Reaction to fire tests for building products — Non-combustibility test"

Instrument Features

1. Dual Control Modes: Operations can be controlled via the touch screen or a computer, with easy switching between modes. One device supports multiple computer terminals simultaneously (LAN sharing). (Note: Computer and printer are supplied by the user; host software, router, and network cables are included.)

2. Automatic Sampling: Features an automatic sampling function that inserts the specimen into the furnace chamber once temperature stability is reached. The specimen basket automatically rotates 90° upon exiting the furnace outlet. The process can be interrupted at any time, and the basket can automatically retract to the initial position.

3. Advanced Control: Utilizes microcomputer and Silicon Controlled Rectifier (SCR) technology to regulate furnace power and temperature.

4. High Automation: Displays and records temperatures for the furnace, specimen center, and specimen surface in real-time. Provides automatic step-by-step operation prompts.

5. Data Analysis: Capable of querying historical curves and automatically judging temperature equilibrium.

6. Safety & Ease of Use: The testing process is safe, reliable, and user-friendly.

7. Furnace Design: Features a custom-molded refractory furnace chamber with excellent thermal insulation.

8. High Performance: Uses high-quality strip heaters, capable of reaching temperatures up to 900℃.

9. Software Integration: PLC + LabVIEW professional software displays real-time curves for furnace, specimen center, and specimen surface temperatures. It enables automatic control, data acquisition/processing, and result saving/output.

10. Observation: Equipped with a top-mounted viewport for safe observation of the specimen's combustion status inside the furnace.

Technical Specifications

1. Furnace Dimensions: Φ40cm, Height 1.5m.

2. Heating Element: 80/20 Nickel-Chromium resistance strip (Thickness 0.2mm, Width 3mm).

3. Automatic Sampling Device: L8cm × W8cm × H83cm.

4. Basket Track: Width 2cm, Length 38cm.

5. Viewport Extension Range: 0-30cm.

6. Specimen Size: Φ45 × 50 mm.

7. Heating Tube: Inner diameter 75mm ± 1mm, Outer diameter Φ90mm ± 1mm, Height 150mm ± 1mm; Power approx. 2KW.

8. Thermocouple: Nickel-Chromium/Nickel-Silicon armored thermocouple (Outer diameter 1.5mm, Wire diameter 0.3mm); Heater power: 2KW.

9. Stabilization Time: Approx. 1 hour from room temperature to 750℃ to reach stability for testing.

10. Sensor Configuration: Equipped with furnace, specimen center, and specimen surface thermocouples.

11. Scanning Device: 360° rotatable and lifting thermocouple scanning device.

12. Airflow System: Stainless steel inverted cone air stabilizer and cylindrical flow guide hood.

13. Temperature Control: Software automatically controls heating rate and manages furnace temperature in stages.

14. Operating Environment: -5℃ to 40℃.

15. Power Supply: AC 220V ±10%, 50Hz, Current ≤ 10A.

16. Stabilization: Time from room temperature to 750℃ is ≤ 1 hour.

17. Heating Source: Electric furnace preheated to 750 ± 5℃; Max furnace temperature 900℃; Furnace temperature 750 ± 5℃; Temperature drift ≤ 2℃ within 10 minutes.

18. Temperature Accuracy: ≤ ±0.5℃.

19. Heating Power: 800-1000W.

20. Max Power: 1.5KW.

21. Heating Voltage: 0 ~ 100V adjustable.

22. Software Logic: Includes current regression judgment for temperature equilibrium conditions.