Scope of Application

【Operating Instructions】

This test furnace has been developed in accordance with the technical specifications and requirements of GB/T 5464‑2010. It is suitable for the test method used to evaluate the combustion performance of building materials under laboratory conditions. It is applicable for classifying the combustion performance of Class A fire‑resistant materials according to GB 8624.

**YS-JCB-2 Non‑Combustibility Test Furnace for Building Materials**

**【Scope of Application】**  

This test furnace has been developed in accordance with the technical specifications and 

requirements of GB/T 5464‑2010. It is suitable for the test method used to evaluate the combustion 

performance of building materials under laboratory conditions. It is applicable for classifying

 the combustion performance of Class A fire‑resistant materials according to GB 8624.

**【Applicable Standards】**  

GB/T 5464‑2010, GB/T 8624, ISO 1182 — Reaction to fire tests for building products — Non‑combustibility test

**【Instrument Features】**  

1. Uses microcomputer technology and thyristor control to regulate the furnace 

temperature by adjusting the power.  

2. Dual control modes: operation can be performed via the touch screen or through a 

computer; switching between operation modes is easy. One instrument can be operated 

by several computers simultaneously, and multiple computers can be online at the same 

time, enabling LAN sharing. (The user supplies the computer and printer; the upper‑level

 software, router, and network cable are provided with the equipment.)  

3. High degree of automation: during the test, the furnace temperature, specimen centre

 temperature, and specimen surface temperature are displayed and recorded; operation

 prompts automatically appear for each test step.  

4. Historical curves can be queried, and temperature equilibrium is automatically determined.  

5. The test process is safe, reliable, and easy to operate.  

6. The custom‑moulded refractory furnace chamber provides good thermal insulation.  

7. Uses high‑quality strip heaters; the furnace temperature can reach 900 °C.  

8. PLC + NAbview professional software displays real‑time curves of furnace temperature, 

specimen centre temperature, and specimen surface temperature, enabling automatic 

control, data acquisition and processing, data storage, and output of measurement results.  

9. Equipped with an observation mirror at the top, allowing the user to safely observe

 the combustion state of the specimen inside the furnace.

**【Technical Parameters】**  

1. **Furnace dimensions:** Φ40 cm, height 1.5 m.  

2. **80/20 nickel‑chromium resistance strip specifications:** thickness 0.2 mm, width 3 mm.  

3. **Specimen dimensions:** Φ45 × 50 mm.  

4. **Heating furnace tube:** inner diameter 75 mm ± 1 mm, outer diameter Φ90 mm ± 1 mm, 

height 150 mm ± 1 mm, power approx. 2 kW.  

5. **Thermocouple:** nickel‑chromium / nickel‑silicon sheathed thermocouple, outer 

diameter 1.5 mm, wire diameter 0.3 mm; heater wire power: 2 kW.  

6. **Furnace temperature stabilisation time:** from room temperature to 750 °C, stabilisation 

for testing takes about 1 hour.  

7. **Thermocouples installed:** furnace thermocouple, specimen centre thermocouple, 

specimen surface thermocouple.  

8. **Thermocouple scanning device:** 360° rotatable and vertically adjustable.  

9. **Stainless steel inverted‑cone air stabiliser and cylindrical flow guide cover.**  

10. **Software automatically controls the heating rate and regulates the furnace temperature in stages.**  

11. **Operating environment:** –5 °C to 40 °C.  

12. **Power supply:** AC 220 V ±10 %, 50 Hz, current ≤ 10 A.  

13. **Stabilisation time:** from room temperature to 750 °C ≤ 1 hour.  

14. **Heating source:** electric furnace preheated to 750 ± 5 °C; maximum furnace

 temperature 900 °C; furnace temperature 750 ± 5 °C; temperature drift ≤ 2 °C within 10 minutes.  

15. **Temperature measurement accuracy:** ≤ ±0.5 °C.  

16. **Heating power:** 800–1000 W.  

17. **Maximum power:** 1.5 kW.  

18. **Heating voltage:** 0–100 V, adjustable.  

19. **Software includes current regression for determining temperature equilibrium conditions.**