Fireproof Building Materials Non-Combustibility Testing Machine It Is Mainly Applicable To The Test Method For Determining The Combustion Performance Of Building Materials Under Specified Conditions

I. Compliance with standards:
It is developed in accordance with the technical indicators and requirements stipulated in the national standards GB/T 5464-2010 "Test Method for Non-combustibility of Building Materials" and GB/T 8624-2012 "Classification of Fire Performance of Building Materials and Products". Iso 01182:2002 "Test for Fire Reaction of Building Materials - Non-combustibility Test"

Ii. Scope of Application
It is mainly applicable to the test method for determining the combustion performance of building materials under specified conditions. It is applicable to the combustion performance classification of Class A fireproof materials in the GB8624 combustion performance classification of building materials.

Iii. Main Features
This device adopts an industrial computer combined with a 16-bit high-precision AD acquisition card. The collected data is entirely processed by the computer, greatly simplifying the traditional manual data operation work. The user-friendly operation interface is simple and convenient to operate. Even those who are not familiar with computers can learn to operate it within 5 minutes of training. During the test, the test personnel can view the test data and temperature curve in real time. After the test is completed, a test report is automatically generated. The test data is clear at a glance, which is convenient for the operator to save, print and forward, etc. The equipment is equipped with a high-precision voltage stabilizer, with voltage fluctuations within 2%, ensuring the stability of the input test voltage. The equipment is also equipped with overheat and overcurrent protection devices to prevent the heating furnace from being overloaded during the heating process, effectively extending the service life of the furnace.

Main parameters
The test apparatus includes a heating furnace, sample rack, gas flow hood, thermocouple, power stabilizer, voltage regulator, intelligent temperature control device, and computer (capable of recording temperature curves and all test data).
2. Heating furnace: Nickel 80% chromium 20% resistance strip with dimensions of Φ95mm×Φ75mm×Φ150mm and 3mm×0.2m
3. Sample rack mass: 15g+1g
4. Airflow hood: Φ75mm×500mm
5. Thermocouple: Insulated nickel-chromium armored Φ3mm
6. Voltage stabilizer: 2KVA, voltage stability ≤±1%
7. Thermometer: 0 to 1000±2%
8. Timing range: 0 to 99 hours, accuracy ±1 second
9. Power supply voltage: AC220V±10%, 50Hz, current ≤10A;
10. Stabilization time: ≤1 hour from room temperature to 750°C;
11. Furnace temperature: 750±5°C;
12. Temperature drift inside the furnace: 2°C/10min;
13. Heating power: 800-1000W;
14. Maximum power: 1.5KW;
15. Power heating voltage: Adjustable from 0 to 100 V
Equipment structure: This machine is composed of a heating furnace, a control box, a computer and an air stabilizer.
Combustion chamber dimensions: L700*W400*H850 (mm).
The combustion box and control box are made of high-quality SUS304 stainless steel, with a beautiful and elegant appearance. All internal components are made of SUS304 stainless steel, which has excellent rust resistance.

Temperature control system
Thermocouple: K-type nickel-chromium armored thermocouple with a wire diameter of 0.3 and an outer diameter of ￠1.5*300 is adopted, fully meeting the first-level precision requirements of GB/T5464.
Temperature acquisition: It adopts a 16-bit AD from Advantech and a high-precision temperature acquisition card, and is combined with a computer system to perform arithmetic processing on the collected signals, ensuring precise control.

Usage conditions: The ground should be flat, well-ventilated, and free of flammable, explosive, corrosive gases and dust. There are no strong electromagnetic radiation sources nearby. Leave appropriate maintenance space around the equipment.
Temperature: 25℃ to 35℃.
The allowable voltage fluctuation range is 220V±10%.
Allowable frequency fluctuation range: 50Hz±1%.
The user is required to install a leakage air switch for the equipment at the installation site, and this switch must be an independent and dedicated one for the use of this equipment.
Test furnace dimensions: L550×W550×H2100 (mm).
The size of the control box is L700×W600×H1200 (mm), and the control box is computer-controlled.
The experimental furnace is made of high-quality (t=1.2mm) stainless steel, with an elegant and generous appearance.
All internal components are made of SUS304 stainless steel, which has excellent anti-rust performance.
Temperature control system: Computerized intelligent temperature control system.
Thermocouple: Nickel-chromium armored thermocouple with a diameter of φ1.5mm and an accuracy of Ⅱ.
Display of the computer interface of the equipment
Iv. Performance Indicators
Power supply: AC220V±10%, 50Hz, current ≤10A;
2. Heating power: 1500W;
3. Temperature range: (-200 to 1300)℃
4. Temperature control range: (300-750)℃
5. Temperature measurement accuracy: ±1℃;
6. Temperature control accuracy: ±3℃;
7. Initial equilibrium temperature inside the furnace: (750±5) ℃, temperature drift within 10 minutes ≤2℃;
8. Temperature stabilization time inside the furnace: The stabilization time from room temperature to 750℃ is ≤1 hour.
9. Dimensions of heating furnace tubes: Inner diameter (75±1) mm, height (150±1) mm;
10. The sample is cylindrical: diameter 45mm, height (50±3)mm;
11. Land area: 1 square meter;
12. Temperature probe: Nickel-chromium - nickel-silicon armored thermocouple with outer diameter of 1.5mm and wire diameter of 0.3mm;
13. Power regulation: Adjustable from 0 to 1200 V;
14. State adjustment: Before the test is conducted, the sample must be adjusted in a ventilated drying oven at a temperature of (60±5) ℃ for (20 to 24) hours, and then placed in a desiccator dish to cool to room temperature. Before the test, the mass of each group of samples should be weighed, accurate to 0.01g.
15. Probe test points: test chamber, center of the specimen, surface of the specimen, furnace wall.

Instrument
All the instruments are installed in a 19 'housing, which includes a temperature controller, an over-temperature alarm and a power controller. The power controller can maintain the temperature under the influence of voltage fluctuations and display the power of the power supply (in watts).