Thermal test system TDP 909 T3

for constructionfor the building industryfor building

Overview
The TDP 909 T3 is a roof fire testing system designed to perform DIN CEN/TS 1187 Test Method 3. It evaluates multi-layer roof assemblies under combined wind and radiant exposure using representative roof specimens (minimum 1.2 m × 3.0 m).

Purpose and Standards
Built to execute Test Method 3 of DIN CEN/TS 1187, the system assesses the following:

• Fire spread on the roof surface
• Fire spread within the roof structure
• Penetration of the roof by fire
• Occurrence or falling of burning or molten material

System Design and Test Conditions
The test rig integrates incendiary devices, a wind generator and an overhead radiant heater to reproduce the exposure conditions required by Test Method 3. A wind device establishes a defined airflow parallel to the specimen while the overhead radiant heater provides a symmetrical heat flux distribution at the specimen surface.

Sample Handling and Adjustability
The sample frame is tiltable to test roof pitches. The frame is mounted on a sample carrier trolley and its angle is continuously adjustable (0–50°). The wind device base is movable for correct positioning relative to the specimen; the radiant heater height is adjustable on the test rack.

Heating and Ignition
The radiant panel comprises four square radiant elements (300 mm × 300 mm each), heat resistant up to 900 °C, mounted on a 45° swivel frame with adjustable height and equipped with four ignition electrodes. Gas is supplied to the panel via the measuring and control unit.

Control and Operation
A measuring and control unit with an intuitive touch display guides operation. Individual components (wind device, radiant panel, ignition, positioning and motion mechanisms) can be controlled manually at any time. Calibration accessories are provided in the standard scope of delivery.

Test Specimen and Scope
Representative roof assemblies are tested including multiple layers, existing thermal insulation and vapour barriers. Typical minimum specimen dimensions: 1.2 m width × 3.0 m length. The system is suitable to assess surface spread, internal spread, penetration and falling/burning debris under combined wind and radiant exposure.

Features at a Glance

• Mobile stainless steel base frame and carriage system for radiant panel and sample carrier
• Solid steel girder constructions with swivel mechanism for radiant panel
• Radiant heater: 4 square elements (300 mm × 300 mm), heat resistant to 900 °C, mounted on 45° swivel frame with adjustable height and four ignition electrodes
• Propane gas feed to radiant panel via measuring and control unit
• Separate mobile frame for wind generator and gas hose routing
• Integrated fan for wind simulation required by T3
• Measuring and control unit with touch display for user guidance
• Individual manual control of all components at any time
• Calibration accessories included

Notes
Test Method 3 requires the combined use of incendiary devices, wind and a radiant heater. The TDP 909 T3 provides the mechanical and control features to carry out these tests under defined and reproducible conditions in line with the referenced standard.