DX8342 Fire Resistance Tester Ultimate Solution for 380V±10% Voltage Fire Resistance Tests of Building Components

 DX8342 Fire Resistance Tester for Building Components

Scope of application: It is suitable for the fire resistance test of building components, and the fire resistance of load-bearing vertical separation components.

Operating voltage: AC 380V±10% 50NZ.

Furnace body: The test furnace is composed of bricks, steel structure and fireproof and thermal insulation materials.

Specimen size: width 300mm× height 300mm (can be customized).

The dimensions of the furnace are approximately:

Vertical furnace: L3.2m× W2.2m× H4.0m       

Horizontal furnace: L3.2m× W3.2m× H1.5.

Gas flow: 0~100L/min Measurement accuracy 2.5 grade.

Air flow: 0~50m3/min Measurement accuracy≤±0.5m3/min.

Gas tank capacity: ≥50kg×6.

Load measuring equipment: ±2.5% of the load value should be added (required for loading type test).

Specimen gap measuring probe: 6mm diameter ±0.1mm, diameter 25mm±0.2mm.

Combustion system: gas distribution system (within 10 meters), flamethrower (not less than 20) and regulating valves.

Combustion gas source: propane, liquefied gas.

Furnace temperature control system: the maximum sampling point is 10 points.

Ventilation system and control damper, etc.

Measuring range of radiant heat on the backfire surface of the specimen: 0~10W/cm2.

Furnace pressure measurement range: 0~100pa      

Measurement accuracy: ≤±3pa.

Test temperature: The furnace temperature control meets the requirements of T-T0=3451g (8t+1), and the temperature control deviation is controlled:

At 0min<t≤10min, d≤15%.

At 10min<t≤30min, d≤10%.

When T> 30min, d≤5%.

Furnace temperature: ±15°C.

Internal temperature of the specimen: ±10°C.

Specimen backfire temperature: ±4°C.

Furnace pressure measurement conditions:

5 minutes after the start of the test, the positive pressure conditions specified below should be reached in the furnace.

Horizontal member - on the horizontal plane 100mm below the bottom surface of the specimen, the furnace pressure is 15Pa±5Pa.

Vertical member – 3m height in the furnace, 100mm from the surface of the specimen. The furnace pressure is 15Pa±5Pa.

10 minutes after the start of the test, the furnace should reach the positive pressure conditions specified below.

Horizontal member - on the horizontal plane 100mm below the bottom surface of the specimen, the furnace pressure is 17Pa±3Pa.

Vertical member – 3m height in the furnace, 100mm from the surface of the specimen. The furnace pressure is 17Pa±3Pa.

Furnace temperature: ±15°C, using a thermocouple with a diameter of 1mm.

The backfire temperature of the specimen is ±4°C, and the wire diameter is 0.5mm.

Armoured platinum rhodium platinum s-value thermocouple, accuracy class 2.

Armoured nickel-nickel-silicon K-value thermocouple, grade 2.

Timing range: 0~120min Timing accuracy: <±1s.

Sample temperature detection system: the maximum sampling point is 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 test of non-load-bearing horizontal doors and roller shutters.

Main parameters:

Electricity power: 6KW

Furnace pressure measurement range: 0-100Pa Measurement accuracy: ≤±3Pa

Air flow: 0-50m3/min Measurement accuracy: ≤±0.5 m3/min

Combustion gas source: propane, liquefied gas (provided by the user)

Gas tank capacity: 50kg×6

Radiant heat measurement range of the backfire surface of the specimen: 0~10W/cm2;

Furnace pressure measurement range: 15Pa±5Pa;

Test temperature: program temperature 15min room temperature ~ 718°C,

30min room temperature ~ 821°C, 60min room temperature ~ 925°C,

90min room temperature ~ 986°C; 120min room temperature ~ 1029°C;

180min room temperature ~ 1115°C, 240min room temperature ~ 1150°C;

Temperature sensor: in the furnace: 9 armored nickel-chromium-nickel-silicon K-value thermocouples, accuracy level: class II

Backfire: 29 armored nickel-chromium-nickel-silicon K-value thermocouples, accuracy class: class II

Timing range: 0-240min Timing accuracy: <±1s

Sample size: (special specifications can be customized by users)

Equipment usable area: length× width× height (3.8×2.4×4.5) m;

Equipment weight: 4500 kg (test furnace needs to be installed on site);

Gasification system: 150kg/h (optional).

Technical Parameters:

1. 19-inch instrument rack, including oxygen, carbon dioxide and carbon monoxide analyzers

2. The oxygen analyzer is an oxygen analyzer that uses the method of measuring the change of 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%/month of the minimum measuring range on the nameplate, 0.5%/month of the measured value drift < the current measuring range, repeatability error < 1% of the current measurement range, 1% of the current measurement range of the minimum detection limit, linearity error < 1% of the current measurement range

3. The carbon dioxide analyzer and carbon monoxide analyzer are non-discrete infrared type, and the principle is based on the fact that gas molecules have a specific infrared absorption band, and the single-beam alternating infrared analysis method is adopted. The minimum detection limit is 1% of the current measurement range, the linearity error measurement is ±1% of the full scale of < when the maximum range is in the maximum range, the repeatability is < ±1% of the minimum range on the nameplate, and the response time (T90 time) is approximately 1.2 L/min of the sample gas flow< 30 seconds

4. The range of oxygen analyzer is 0-25%, the range of carbon dioxide analyzer is 0-10%, and the range of carbon monoxide analyzer is 0-1%

5. The temperature controller is used to control the cold trap, and the water is fully removed during the gas refining process of the test

6. The double-head pump for gas sampling can transfer the gas samples generated during combustion to the analyzer about 30 meters away

7. Data acquisition system (including operation and control procedures)

8. The acquisition board adopts 16-bit wide gain range, analog and digital I/O boards

9. Thermocouple type: K type, range: ambient temperature ~ 1500 degrees Celsius.

10. The data acquisition system can collect data through the installation and activation of data loggers or field pointers

11. The data acquisition system is composed of the following parts:

Bit thermocouple input module, 16-bit analog input module, digital input/output module, 12-bit analog output module, 4 and 8-slot base plate, connection base, network module, power supply 24 volt 5A DC universal power input, data acquisition computer, printer