ISO9239 ASTME648 Flooring Materials Radiant Heat Flux Test Apparatus Radiant Panel Tester Floor Covering Fire Reaction Device

Item

Specification

System Composition

The equipment primarily consists of the test chamber, smoke density measurement unit, irradiance calibration system, gas control
system, and data acquisition system. It complies with the GB/T 11785-2005 standard.

Test Chamber Structure

Constructed from calcium silicate board (thickness: 13 ± 1 mm; nominal density: 650 kg/m³) and fire-resistant glass (dimensions:
110 ± 10 mm × 1100 ± 100 mm). The fire-resistant glass is made of high-temperature quartz glass and is mounted on the front of the
chamber, allowing for observation of the specimen's status and combustion progress through the viewing window. A metal protective
layer covers the exterior of the test chamber. A tightly sealing door is installed below the viewing window to allow the specimen
platform to be moved in or out. The panels are fabricated from high-quality stainless steel with a thickness of 1.2 mm.

Sliding Platform & Airflow Area

A sliding platform is located at the bottom of the test chamber, ensuring the specimen holder remains in a fixed horizontal
position. The total airflow area between the test chamber and the specimen holder is (0.23 ± 0.03) m², distributed evenly along
the two long sides of the specimen.

Radiant Heat Source

A porous ceramic radiant panel mounted within a metal frame. The frame is made of stainless steel (thickness: 2.5 ± 0.2 mm), and
the panel itself is made of porous refractory material. The radiating surface measures (300 ± 10) mm × (450 ± 10) mm. The panel is
capable of withstanding temperatures up to 900°C. An air-gas mixing system ensures test stability and repeatability. The radiant
heating panel is mounted above the specimen holder, with its long side positioned at an angle of (30 ± 1)° relative to the
horizontal plane.

Specimen Holder (Specimen Rack)

Constructed from fire-resistant L-shaped stainless steel with a thickness of (2.0 ± 0.1) mm. The dimensions of the exposed
specimen surface are (200 ± 3) mm × (1015 ± 10) mm. The holder is secured at both ends to a sliding steel platform by two screws,
and the specimen is fixed onto the holder; the total thickness of the holder assembly is (22 ± 2) mm. The surface of the holder
features scale markings to facilitate observation.

Igniter (Burner)

Made of stainless steel with an inner diameter of 6 mm and an outer diameter of 10 mm. The igniter features two rows of holes: 19
radially arranged holes (0.7 mm in diameter) are evenly distributed along the centerline, and 16 radially arranged holes (0.7 mm
in diameter) are evenly distributed along a line positioned 60° below the centerline.

Ignition Control Parameters

During the test, the propane gas flow rate is controlled at (0.026 ± 0.002) L/s. The igniter is positioned so that the flames
issuing from the lower row of holes make contact with the specimen at a point (10 ± 2) mm ahead of the specimen's zero point. When
in the ignition position, the igniter is located 3 mm above the edge of the specimen holder; when ignition is not required, the
igniter is retracted to a position 60 mm away from the specimen's zero point, with movement automatically controlled by pneumatic
components.