DX8401 Flooring Materials Radiant Heat Flux Test Apparatus GB/T 11785-2005 ISO 9239-1 Tester

DX8401 Flooring Materials Radiant Heat Flux Test Apparatus

The DX8401 is a dedicated laboratory instrument for evaluating the reaction-to-fire performance of horizontal flooring materials that are ignited by a small flame and exposed to an inclined radiant heat field. It is used by flooring manufacturers, testing laboratories and third-party certification bodies to measure flame spread and heat response of complete flooring assemblies under controlled laboratory conditions.

Standards Compliance

• GB/T 11785-2005 — Reaction to fire tests for floorings
• ISO 9239-1 — Determination of the burning behaviour using a radiant heat source

Every critical parameter, from radiant flux distribution at nine points of the panel to duct velocity, is verified against the tolerances defined in these standards, so test reports can be submitted to customers and regulators with confidence.

Applications

The apparatus is suitable for testing virtually all horizontal flooring materials, including:

• Textiles and carpets
• Cork board and wood flooring
• Rubber and PVC / plastic floor coverings
• Sprayed and coated flooring systems

Because the complete flooring assembly is tested, any change of backing material, underlay or substrate is reflected in the result. This helps manufacturers compare formulations, validate incoming materials and support declaration of performance documentation.

Technical Specifications

Construction and Key Features

• Computer control: automatic timing with accuracy better than 1 s/h, data processing, recording and printout of test reports.
• High-accuracy heat flux meter: accurate radiant flux measurement over the full 0 – 15 kW/m² working range.
• Nine-point flux verification: the radiant panel is checked at nine positions to confirm uniform flux distribution required by the standards.
• Stable exhaust system: a steplessly adjustable fan holds duct velocity at (2.5 ± 0.2) m/s and clears combustion gases from the laboratory after each test.
• Durable build: burn chamber and control cabinet are fabricated from 1.2 mm 304 stainless steel on CNC equipment with a rounded, easy-clean profile.
• In-house burner: the pilot burner is produced in our own workshop from 304 stainless steel to exactly meet GB/T 11785 requirements, with high voltage electronic ignition.
• Corrosion resistance: remaining fittings use 304 stainless steel or thickened, electroplated A3 steel, protected against corrosion and rust.

Scope of Delivery

The system consists of two main sections — the burn chamber and the control cabinet — delivered ready for installation, commissioning and operator training. Our engineering team provides calibration guidance and technical support so your laboratory can start testing shortly after delivery.

About Us

Our team brings extensive experience in manufacturing reaction-to-fire and materials testing instrumentation in accordance with EN, ISO and ASTM standards. Equipment is supported by an after-sales team providing spare parts, calibration guidance and technical service.