UL910 ASTM E84 Flame Propagation Test Device Long Steiner Tunnel Furnace AC220V

UL910 ASTM E84 Steiner Tunnel Long Tunnel Furnace Flame Propagation Test Device

Steiner Tunnel Product introduce:

UL910/NFPA262 Steiner horizontal tunnel furnace is mainly used for flame retardant performance testing of CMP-level wires and cables, and is mainly used for cables in horizontal subsystems that are directly laid in ventilation or forced ventilation environments without metal pipelines. This flame retardant test standard represents the most stringent flame retardant test standard of UL in the United States and even the entire wire and cable flame retardant test. Only cables with fluorine material sheath layers can pass this flame retardant test method. Since fluoroplastics have a high decomposition temperature (greater than 400 degrees) and a high ignition point (above 800 degrees), they are not easy to burn when the fire is not large, so they have better fire resistance than other organic materials.

Steiner Tunnel Standard:

ASTM E84‌: The full name is "Standard Test Method for Surface Burning Characteristics of Building Materials", developed by the American Society for Testing and Materials (ASTM).

UL 910: It is the most demanding cable standard in the UL fire protection standard, applicable to plenum cables, also known as the air supply combustion test or Steiner duct test.

NFPA 262‌: Also a standard developed by NFPA, it may be related to the fire resistance of building materials.

‌UL 723‌: Standard developed by Underwriters Laboratories (UL), similar to ASTM E84, for testing the flame propagation and smoke generation characteristics of building materials.

CAN/ULC S102‌: Canadian standard for evaluating the surface burning characteristics of building materials.

UBC Standard 8-1‌: A related standard in the Uniform Building Code (UBC) that involves the fire resistance of building materials.

‌NFPA 255‌: A standard developed by the National Fire Protection Association (NFPA) for evaluating the surface burning characteristics of building materials.

Steiner Tunnel Specifications:

Steiner Tunnel Features:

1. Stainless steel combustion test box, with a brick structure inside, can resist flame impact and has good thermal insulation performance;
2. Double-layer quartz glass observation window, can observe and record the flame spread distance;
3. The indicator light recording method can record the flame spread distance more intuitively;
4. Cooling water circulation support bracket, which can support burning covers such as calcium silicate board;
5. Equipped with 2mm thick 304 stainless steel water seal groove to ensure that smoke does not leak during the test;
6. 304 stainless steel insulation body cover, filled with high-temperature resistant insulation material;
7. Equipped with escalator-type sample installation platform for easy installation and removal of samples and maintenance of furnace;
8. Independent multifunctional exhaust pressure detection device: real-time monitoring of exhaust pressure changes during the test. Detection range 0~250Pa, accuracy ±0.5Pa, system indication pressure test accuracy ±2Pa;
9. Fan: 380V, 50Hz, 3Kw equipped with inverter to change the wind speed, flow rate at least 8000m3/h, It can discharge the smoke generated by the burning sample to the outside in time to ensure the safety of the test;
10. Double-head gas burner: It can output standard 5.3MJ/min heat, and can control the gas flow rate by mass flow meter according to different standards, with a measurement range of 0-160L/min, and can change the calorific value output of the burner, with a maximum output energy of 100MJ/min;
11. Automatic ignition system: to ensure the safety performance of the test, high-voltage igniter, 44KV, 50mA, the minimum high voltage of the ignition electrode is 1.8kV p;
12. Smoke density system: provide a separate signal processing system to ensure the linearity of the sensor;
13. Automatically record temperature and smoke sensor signals, sample collection frequency 1Hz;
14. Mass flow controller: 316 stainless steel material, maximum pressure 1000psig (70bar), leakage rate less than 1×10-7sml/s, calibrated by NIST, 0~5VDC and 4~20mA signal, loop protection, propane flow range 0~2.3g/s, control speed ≤2s, control accuracy of ±1%FS in the range of 0.6~2.3 g/s, repeatability ±0.5FS, temperature range 0~50℃, humidity range 0~90%, digital display, automatic control During the test, the gas supply meets the heat requirement of 5000Btu (5.3MJ)/min, and the software automatically records the amount of gas used;
15. Standard test software, which can automatically record system wind speed, temperature, smoke density and other test data.

Steiner Tunnel Application:

ASTM E84 Steiner furnace test is widely used to evaluate the fire performance of various building materials. The specific application range of materials includes:

‌Floor decoration materials‌: such as wood flooring, carpet, etc.

‌Ceiling decoration materials‌: such as ceiling panels, suspended ceiling materials, etc.

‌Wall decoration materials‌: such as wall panels, wallpaper, etc.

‌Insulation materials‌: such as pipe insulation materials, wall insulation materials, etc.

‌Interior and exterior materials‌: such as interior decorative panels, exterior wall decoration materials, etc.

‌Plywood and soft furniture products‌: such as various plywood products, sofas, mattresses and other soft furniture.

Cable: This CMP cable is typically installed in ventilation ducts or air return plenums used in air handling equipment and is approved for use in Canada and the United States.

‌Other building materials‌: such as paints and coatings, wall coatings, adhesives, caulking agents and sealants, acoustic panels, on-site tensile fabric systems, wood products (including wood, panel products, decorative finishes, shingles and shake boards), reflective insulation and radiation barriers, plastics and wood/plastic composites, etc.