KR-729 Single Flame Ignitability Test Chamber | EN ISO 11925 Building Material Flammability Analyzer
Testing Principles
This experiment determines the combustibility of a specimen in the vertical direction when it encounters a small flame at the edge or surface of the specimen. Observe the combustion behavior of the sample to determine if the flame spreads and if any burning particles or droplets are present.
Product Details：
Product Brief
The KR-729 single-flame flammability test cabinet is professional fire reaction testing equipment fully engineered to satisfy EN ISO 11925-2 (2020) and GB/T 8626 standards. It simulates real low-intensity open flame exposure to vertical building material specimens without extra thermal radiation, recording key fire performance indicators including flame spread distance, sustained combustion time and molten drip ignition risk.
This bench-style combustion cabinet adopts a fully adjustable multi-axis burner platform and sealed stainless combustion chamber, supporting both surface and edge flame impact tests for thermal insulation panels, wall boards, plastic decorative sheets and composite construction materials. It is widely deployed in construction material manufacturers, fire safety inspection agencies, university material labs and third-party CNAS certification institutions for fire rating classification testing.
Core Unique Strengths
- Six-Axis Full Adjustable Burner Motion System
Integrated multi-dimensional moving base enables independent X/Y/Z linear displacement, Z-axis rotation and ±45° swing around horizontal axis. Operators precisely align the standard 45° propane flame onto specimen edge or surface per standard requirements, eliminating position errors from fixed fixtures and ensuring identical flame contact conditions across parallel test groups.2.Anti-Corrosion All-Stainless Combustion Inner TankThe whole test cavity is fabricated from thick SUS304 stainless steel via CNC bending and welding, resistant to smoke erosion, high-temperature charring and acidic combustion fumes. Large transparent tempered glass observation door allows full visual monitoring of combustion status without opening the cabinet, while the top adjustable exhaust damper stabilizes internal airflow at a fixed 0.7m/s wind speed.3.Standard Calibrated Propane Flame AssemblyHigh-temperature alloy burner with Φ0.17mm standard nozzle generates stable 20±1mm flame height. Equipped high-voltage automatic electronic ignition avoids manual lighter operation; precision glass flowmeter precisely controls propane gas input, maintaining consistent flame energy throughout long-duration continuous testing. Two preset ignition durations (15s / 30s) are available to match different test protocols.4.Independent Digital Timing & Safety Control PanelSeparate digital timer supports customizable flame exposure and post-observation time from 0 to 99min99s. Centralized control layout integrates power start, emergency stop, gas flow regulation and running alarm buzzer; the system automatically cuts gas supply in abnormal states to prevent hidden fire hazards during unattended testing.5.Universal Specimen Clamp for Multi-Thickness SamplesTwo sets of thickened U-shaped stainless holders are supplied, compatible with standard 250×90mm and 250×180mm test pieces up to 60mm maximum thickness. Separate clamping schemes are designed for single-layer flat panels and multi-layer composite boards, fully complying with EN 13238 specimen preparation rules.6.Compact Integrated Cabinet LayoutSplit structure of combustion chamber and independent control panel occupies minimal lab bench area. All internal moving hardware adopts anti-rust plating treatment, with easy-to-disassemble door hinges and internal support grids for quick residue cleaning after combustion tests, lowering daily maintenance workload.
Product Parameters
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Movable direction
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(1) Y-direction movement (2) X-direction movement
(3) Z-direction movement
(4) Y-direction sliding
(5) rotation around the Z axis
(6) burner swinging around the X direction -450~+450. |
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Nozzle aperture
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￠ 0.17mm
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Flame height
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(20 ± 1) mm
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Igniter timing
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15s, 30s
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Gas
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Propane gas with a purity of over 95%
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Sample size
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250mm × 90mm, 250mm × 180mm
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Test sample thickness
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≤ 60mm
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Environmental temperature
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(23 ± 5) ℃
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Relative humidity
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(50 ± 20)% RH
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Power supply
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AC220V ± 10% 50HZ
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Machine size
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900 × 400 × 910mm
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Test box material
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stainless steel
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Clamp
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two U-shaped stainless steel frames, with a thickness of 5.0mm
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Burner
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45-degree angle to horizontal
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Flue air velocity
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0.7m/s
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Anemometer accuracy
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± 0.1m/s
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Flame release time
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0 ~ 99 minutes and 99 seconds can be set
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Hold time
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0 ~ 99 minutes and 99 seconds can be set
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Ignition system
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high voltage electronic ignition, automatic ignition, reset
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Product Advantages
Standard Complete Test Operation Flow
- Specimen Pre-Conditioning
Place cut standard test samples in a constant environment of 23±5℃ temperature and 30%~70% relative humidity for at least 24 hours to stabilize internal moisture, avoiding combustion result deviation caused by water content differences.
- Equipment Pre-Check
Connect propane gas pipeline and power supply, open the observation door to inspect burner position and specimen holder cleanliness; adjust top exhaust damper to lock airflow speed at 0.7m/s, then close and fasten the door.
- Sample Mounting
Fix conditioned vertical specimen tightly on the U-shaped clamp, adjust X/Y/Z multi-axis sliding table to move the burner to the standard flame impact position specified by the test standard (surface or edge contact).
- Parameter Setup & Ignition
Set target flame exposure time on the digital timer, open gas valve and activate automatic ignition to form a stable 20mm flame; start the timing program to launch standardized flame impingement test.
- Combustion Phenomenon Recording
Through the transparent window, record real-time data including maximum flame rising height, total burning duration, and whether molten drips ignite the filter paper under the specimen. After the set exposure time, the gas supply automatically shuts off.
- Post-Test Cleaning & Data Sorting
Wait for the internal cabinet to fully cool down, clear combustion ash and molten residue on the support grid; organize recorded flame spread and drip data to judge material fire resistance grade per EN 13501 classification standards.
Applicable Testing Materials & Industrial Fields
External Wall Thermal Insulation Materials
EPS/XPS foam boards, rock wool composite panels, inorganic thermal insulation plates; test flame retardant performance for building exterior enclosure systems.
Building Decoration Plastics & Composites
PVC wall panels, wood-plastic sheets, melamine decorative boards, plastic ceiling panels; raw material incoming flammability screening.
Architectural Seal & Lightweight Board Products
Glass fiber composite plates, fireproof gypsum boards, flexible sealing strips, interior partition panels; finished product fire safety batch inspection.
R&D & Third-Party Certification Labs
Construction material enterprise R&D departments, fire testing institutions, university building material research labs; official fire performance test reports for market access approval.
Standard Factory Delivery Package
- KR-729 main stainless steel combustion test cabinet
- Six-axis adjustable burner moving platform + 45° standard alloy burner
- Two sets of U-shaped stainless specimen holders (for thin & thick samples)
- Digital timing control panel with gas flow regulating assembly
- Propane gas connecting pipeline and quick connection fittings
- High-temperature resistant observation glass door assembly
- Multi-language operation manual aligned with ISO & GB fire test standards
- Factory inspection qualification certificate and electrical schematic drawing
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Global Distributor & After-Sales Service
We provide full remote operation training and standard flame test parameter matching guidance, with long-term stable supply of replacement burners, flowmeters and sealing gaskets. Custom cabinet sizes and overseas 60Hz voltage conversion versions are available for bulk purchase orders. Exclusive regional agent policies include priority production scheduling, OEM private brand labeling and complete high-definition English marketing image packages.
English Overlay Text For All Product Pictures
Main Banner Title: KR-729 EN ISO 11925 Single Flame Building Material Ignitability Tester
Control Panel Tags: POWER SWITCH / EMERGENCY STOP / DIGITAL TIMER / GAS FLOW REGULATOR
Feature Overlay Tags: 6-Axis Adjustable Burner / SUS304 Sealed Chamber / Auto Propane Ignition / ISO & GB Certified / Full View Observation Window
Safety Warning Label: Cut Off Gas Supply Immediately After Test; Do Not Open Hot Chamber Door
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