KR-746 Epiradiator Thermal Radiation Flame Spread Analyzer

Category 2. Plastic Testing Machine

Additional information

PVC Plastic Powder High-Speed Mixing Machine

The High-Speed Mixing Machine is suitable for mixing, coloring, and drying powder and granular materials in plastics, rubber, chemicals, food, and other industries. It is typically used in the preparation of PVC dry blends, plastic filling modification, initial mixing before extruder granulation, and multi-component mixing before wood plastic production.

Product Details：

Product Overview

The KR-746 thermal radiation flame spread testing cabinet is a professional fire reaction laboratory device developed fully compliant with France NF P92-501 and railway industry TB/T 2639.1 standards. It simulates real fire thermal radiation environments by delivering stable 30kW/m² uniform heat flux onto flat material specimens, recording volatile gas ignition, flame extension distance and heat release-related data throughout the whole test cycle.

This equipment is dedicated to evaluating the flame retardant performance of rigid and flexible sheets with thickness above 5mm, including railway interior panels, building decorative plates and composite polymer materials. Integrated PLC automatic control and full observation structure support unattended standardized testing, widely adopted by rail vehicle manufacturers, construction material factories, fire safety certification labs and new material R&D institutes for flame classification verification.

Core Technical Advantages

Stable Constant Thermal Radiation Heating Module
500W precision radiation heating unit with closed-loop power regulation system maintains steady 30kW/m² heat flux output without manual repeated calibration. Real-time power digital display on the control panel visualizes radiation intensity, effectively eliminating test deviation caused by heat attenuation during long-duration running.

2.Dual Ignition Burner & Precise Flame Control

Upper and lower independent stainless ignition burners are equipped with fine-tuning needle valves to adjust flame height freely, matched with standard measuring rulers for accurate flame dimension calibration. Durable pilot flame igniter enables one-touch pre-ignition before formal testing; quarter-turn gas cut-off valve ensures rapid fuel shut-down for safe operation.

3.Anti-Fire Integrated Test Chamber Structure

Whole cabinet adopts thick stainless steel welded shell, inner lining with high-temperature flame resistant insulation material. Large tempered transparent observation window allows full real-time monitoring of flame spread without opening the cabinet door. Filtered tubular air intake isolates indoor dust and pollutants to avoid disturbing internal airflow field.

4.45° Standard Specimen Mounting Bracket

Fixed 45° inclined test rack with engraved stainless scale ruler for intuitive measurement of maximum flame propagation length. The fixture fits flat samples up to 400×300mm with maximum thickness 120mm, compatible with single-layer solid boards, coated composite sheets and flexible elastic materials.

5.Multilingual Touch PLC Intelligent Data System

7-inch color touchscreen supports Chinese/English one-click switching, customizable timing range from 0 to 9999 seconds. Built-in professional test algorithm automatically calculates core indicators: average flame index, maximum flame height index and combustion heat index. All test logs can be stored, previewed and printed directly for laboratory filing.

6.Multi-Point Temperature Monitoring & Full Safety Interlock

Two sets of thermocouple sensors are installed at air inlet and cabinet top to track internal temperature difference in real time. Complete safety design including gas pressure protection, overheat automatic power-off and front emergency stop button prevents fire hazards during operation. Mobile caster base with leveling foot pads facilitates lab layout adjustment.

Complete Technical Specification Table

Parameter Item	KR-746 Standard Configuration
Compliant Test Standards	NF P92-501, TB/T 2639.1
Control System	Industrial PLC + 7-inch bilingual touch HMI
Timing Adjustable Range	0 ~ 9999 s arbitrary setting
Standard Specimen Size	Max 400×300mm, thickness ≤120mm flat sheet
Nominal Radiation Power	500W, stable 30kW/m² heat flux
Power Meter Precision Class	0.5 grade high accuracy
Gas Working Pressure Limit	Below 0.1MPa adjustable via needle valve
Overall External Size	W1900 × D460 × H2100 mm
Total Net Weight	210kg (Main cabinet 158kg + sample bench 50kg)
Rated Input Power	AC220V / 50Hz, total power 550W
Test Angle	Fixed 45° inclined sample support
Core Output Test Indexes	Flame index, average flame height, maximum flame spread index, combustion heat index

Standard Complete Test Operation Flow

Pre-Equipment Inspection & Calibration

Check gas pipeline tightness, thermocouple signal and burner ignition function; power on the touch control system and perform self-check, calibrate radiation power output to reach standard 30kW/m² heat flux.
Specimen Clamping & Placement

Trim test material to standard dimensions, fix flat sample tightly on the 45° inclined bracket, ensure the surface is perpendicular to radiation panel without bending or gap.
Test Parameter Configuration

Set test duration on touchscreen, adjust burner flame height to standard size via needle valve, open gas supply and activate pilot ignition to standby state.
Formal Thermal Radiation Exposure

Start the automatic test program; the radiation panel releases constant heat flux to heat the specimen, volatile combustible gas is ignited by dual burners, the system continuously records flame spread and temperature data.
Automatic Data Calculation & Storage

When preset test time ends, gas and heating system shut off automatically. The host computes full set of flame retardant indexes instantly, users save records or connect external printer to generate formal test reports.
Post-Test Cooling & Maintenance

Wait the inner cabinet fully cool down, clear combustion residue on bracket and chamber inner wall; close main gas valve and cut off power supply, cover dust shield for storage.

Applicable Test Materials & Industry Scenarios

Railway Vehicle Interior Materials

Train wall panels, ceiling boards, seat backrests, interior plastic and composite decorative sheets; mandatory flame retardant compliance inspection per TB/T railway standards.

Building Decoration Materials

Rigid insulation boards, coated composite panels, elastic soft decorative plates, wall cladding materials; fire classification testing under NF P92-501 French building norms.

Polymer New Material R&D Labs

Modified flame retardant plastics, rubber composite sheets, adhesive coated substrates; formulation flame performance comparison and screening.

Third-Party Fire Safety Certification Institutions

CNAS accredited testing centers, rail vehicle product inspection stations, construction material quality supervision departments; official test reports for market access certification.

Standard Factory Delivery Kit

KR-746 thermal radiation flame spread tester main cabinet unit
Matching 45° stainless specimen support bench
Dual upper/lower ignition burner assembly with gas regulating valve
Complete thermocouple temperature monitoring module
PLC bilingual touch control cabinet and data printing interface
Full set gas pipeline fittings and quick shut-off valve
Multilingual operation manual & factory calibration inspection certificate
Mobile casters and leveling adjustment foot pads

Global After-Sales & Distributor Cooperation Support

We provide full remote operation training and standard test parameter debugging guidance, with long-term stable supply of replacement radiation heating tubes, burners and temperature sensors. Custom cabinet sizes and overseas 60Hz power conversion versions are available for bulk purchase orders. Exclusive regional agent policies include priority production scheduling, OEM private brand customization and full high-definition product marketing image packages.

English Overlay Text For All Product Pictures

Main Banner Title: KR-746 NF P92-501 Thermal Radiation Flame Spread Analyzer

Control Panel Tags: TIME SET / POWER ADJUST / TEST START / EMERGENCY STOP / DATA PRINT

Feature Overlay Tags: Stable 30kW/m² Heat Flux / Dual Ignition Burners / 45° Standard Sample Rack / PLC Auto Calculation / Bilingual Touch Screen

Safety Operation Tip: Cut Off Gas Supply Completely After Each Test Cycle

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We are now seeking reliable partners to represent our brand in their local markets.

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Your orders will be handled with priority, and our team will assist you with tailored equipment solutions based on your market needs.

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KR-746 Epiradiator Thermal Radiation Flame Spread Analyzer

KR-746 Epiradiator Thermal Radiation Flame Spread Analyzer

Additional information

PVC Plastic Powder High-Speed Mixing Machine

Product Details：

Product Overview

Core Technical Advantages