Plastic Smoke Density Tester
Plastic Smoke Density Tester – ToronFT™ DT-P
ToronFT™ DT-P is a Plastic Smoke Density Tester specifically designed to measure the specific optical density of smoke produced when plastic materials undergo combustion. As a high-performance density tester, it evaluates the maximum specific optical density — the key parameter used to assess the smoking performance of plastics under defined test conditions. This system is ideally suited for materials quality control, product development, and regulatory compliance applications across the plastics and cable industries.
The ToronFT™ DT-P integrates a closed combustion test chamber with a photometer measurement system, radiation cone device, combustion system, weighing instrument, igniter, temperature measurement instrument, and dedicated smoke density test software — all forming a complete, turnkey testing solution compliant with internationally recognized standards.
Plastic Smoke Density Tester – ToronFT™ DT-P Applications
- Smoke density evaluation of plastic materials used in electrical and electronic products
- Compliance testing of plastic components for building and construction applications
- Product development and formulation testing of flame-retardant and low-smoke plastic compounds
- Quality assurance testing for plastic cable jacketing and insulation materials
- Research and certification testing of engineering plastics and polymer composites
- Third-party and accredited laboratory density tester applications for plastics fire performance

Standards
- ISO 5659-1: Plastics: Smoke Generation — Part 1: Guidance on Optical Density Testing
- ISO 5659-2: Plastics: Smoke Generation — Part 2: Determination of Optical Density by a Single-Chamber Test
Plastic Smoke Density Tester – ToronFT™ DT-P Key Features



- Complete, integrated test system including combustion chamber, photometer measurement system, radiation cone device, combustion system, weighing instrument, igniter, test box, bracket, temperature measurement instrument, and smoke density test software
- Closed smoke density test chamber constructed with inner and outer walls made of chemical-corrosion-resistant metal layers for durability and ease of cleaning
- Precise chamber geometry: length 914 ± 3 mm, height 914 ± 3 mm, depth 610 ± 3 mm
- Radiation cone device provides uniform and controlled heat exposure on the specimen surface
- Integrated weighing instrument for accurate specimen mass measurement before and after testing
- Automatic igniter system for consistent and reproducible pilot flame ignition
- Real-time photometer measurement system for continuous optical density monitoring throughout the burning test
- Dedicated smoke density test software with automated data acquisition, Ds curve plotting, and report generation
- Data acquisition system with control box for centralized test management
- Corrosion-resistant chamber construction simplifies decontamination and maintenance after each density tester cycle
Theory and Method
The ToronFT™ DT-P measures the optical density of smoke produced in a closed-chamber environment using a photometric method. A plastic specimen is exposed to a defined radiant heat flux from a radiation cone device under controlled conditions (with or without a pilot flame). As the specimen heats and burns, smoke accumulates within the closed test chamber. A photometer measures the attenuation of a light beam passing through the smoke column, and the specific optical density (Ds) is calculated from the measured transmittance values.
The maximum specific optical density (Ds,max) — the worst-case smoke obscuration during the test — serves as the primary reported result for material comparison and compliance purposes. The system's data acquisition and smoke density test software continuously logs photometric data throughout the test, enabling full curve analysis and automated reporting.
Plastic Smoke Density Tester – ToronFT™ DT-P Technical Specifications
| Component / Parameter | Specification Details |
|---|---|
| General Information | |
| Product Name | Plastic Smoke Density Tester |
| Brand / Model | ToronFT™ DT-P |
| Applicable Standards | ISO 5659-1; ISO 5659-2 |
| Test Chamber & Construction | |
| Chamber Type | Closed combustion test chamber |
| Internal Dimensions (L×H×D) | 914 ± 3 mm × 914 ± 3 mm × 610 ± 3 mm |
| External Dimensions | 1822 mm × 860 mm × 1970 mm |
| Wall Construction / Material | Double-layer metal structure (chemical corrosion-resistant) featuring multi-layer anti-corrosion coating, stainless steel, and an insulation layer |
| Safety Features | Equipped with a safety pressure relief device |
| Radiation & Heating System | |
| Heat Source | Radiation cone device |
| Radiation Cone Intensity | 10–50 kW/m² (±0.5) |
| Radiation Furnace Intensity | 25 kW/m² (±0.05) |
| Temperature Control Range | Room temperature to 1000°C (±1°C) |
| Optical Measurement System | |
| Measurement Type | Photometer (optical transmittance) |
| Measurement Range | 0–100% |
| Resolution | 0.0001% |
| Measurement Accuracy | ±3% |
| Photomultiplier Tube | S4 response (300–650 nm) |
| Heat Flow & Weighing System | |
| Heat Flow Meter | • Range: 0–100 kW/m² • Accuracy: ±0.5% |
| Weighing System | • Range: 0–2000 g • Accuracy: 0.1 g |
| Gas & Ignition System | |
| Ignition System | Automatic igniter |
| Gas & Flow Control | • Propane Flow Rate: 1–100 mL/min • Airflow: 0.1–1 L/min • Control Accuracy: ±1.5% FS (Full Scale) |
| Control System & Software | |
| Data Acquisition | Integrated data acquisition system and control box |
| Test Software | Dedicated smoke density test software |
| Power Supply & Environment | |
| Voltage | AC 200–240V / 50Hz (110V is also available) |
| Operating Temperature | Room temperature to 40°C |