The JYMD Building Materials Smoke Density Tester is a high-precision, dual-control laboratory testing apparatus designed to evaluate the static smoke generation, Maximum Smoke Density (MSD), and Smoke Density Rating (SDR) of plastics, building materials, and solid synthetic products under controlled fire conditions. It strictly complies with ASTM D2843, ISO 5659-2, NFPA 258, BS 2782 (Method 140A), and national standard GB/T 8627-2007.
Equipped with an advanced dual touch-screen and PC LAN network control platform, an automated dual-burner positioning mechanism (260mm Bunsen burner at a 45° angle), precise 276 kPa propane pressure regulation, and a high-sensitivity silicon photocell photoelectric measurement system (0–100% range with ±3% accuracy), this Building Material Smoke Density Test Machine delivers reliable, automated compliance data for plastics processors, construction product manufacturers, fire safety research institutes, and third-party quality inspection laboratories worldwide.
Building Materials & Plastics Smoke Density Tester Compliance & Standards
This smoke density testing system enables certified laboratories to perform precise optical smoke generation and light transmittance assessments across global standards:
| Standard Code |
Standard Title & Scope |
Primary Testing Application |
| ASTM D2843 |
Standard Test Method for Density of Smoke from the Burning or Decomposition of Plastics |
North American benchmark for measuring smoke density and light obstruction from plastic burning/decomposition |
| GB/T 8627-2007 |
Standard Test Method for Density of Smoke from the Burning or Decomposition of Plastics |
Mandatory Chinese national standard for static smoke density testing of plastics and building materials |
| ISO 5659-2 & NFPA 258 |
Plastics — Smoke generation (Single-chamber test) & Standard Research Test for Smoke Generation |
International and NFPA static smoke box protocols for solid materials and polymeric building elements |
| BS 2782 (Method 140A) |
Methods of testing plastics — Thermal properties — Determination of smoke generation |
British standard protocol for assessing smoke optical obscuration characteristics of synthetic polymers |
| EN 13501-1 (Smoke Data) |
Fire classification of construction products and building elements |
Supports European CE mark fire reaction classification regarding smoke emission evaluation (s1/s2/s3) |
Technological Features of JYMD Building Material Smoke Density Tester
- Dual Operation Modes & LAN Multi-PC Sharing: Features flexible switching between a 5-inch touch screen interface and a PC control software system. Supports local area network (LAN) sharing, allowing multiple terminal computers to monitor and operate the device simultaneously.
- High-Precision M3 + FPGA Hardware Architecture: Powered by an M3 processor for command parsing and an FPGA chip dedicated to TFT graphics drive, ensuring zero startup delay, high processing speed, and low power consumption.
- Automated Main & Auxiliary Burner Positioning: Designed with auto-rotating main and auxiliary Bunsen burners (260 mm length, 0.13 mm nozzle diameter positioned at 45°) for exact ignition and flame contact timing.
- Accurate Photoelectric Measurement & Auto-Calculation: Utilizes a stabilized 12V bulb light source and silicon photocell receiver to continuously measure 0–100% light transmittance and automatically compute Maximum Smoke Density (MSD) and Smoke Density Rating (SDR).
- Integrated Exhaust & Safety Interlocks: Equipped with a powerful post-test exhaust fan to rapidly clear combustion gases from the test chamber. Automated timers control 4-minute flame exposure, ignition, and system shutdown.
Technical Specifications of JYMD Smoke Density Test Apparatus
| Governing Test Standards |
ASTM D2843, GB/T 8627-2007, ISO 5659-2, NFPA 258, BS 2782 (Method 140A) |
| Measurement Metrics |
Maximum Smoke Density (MSD: 0–100%) and Smoke Density Rating (SDR: 0–100%) auto-calculation |
| Measurement Accuracy |
±3% accuracy across 0% to 100% optical transmittance range |
| Burner Specifications |
Bunsen burner; Length: 260 mm; Nozzle diameter: 0.13 mm; 45° mounting angle; 4 min flame application |
| Main Burner Gas Pressure |
276 kPa (adjustable); Fuel: Propane (purity ≥ 85%) |
| Photoelectric Receiver System |
12V bulb light source with Silicon Photocell receiver (0% = complete block, 100% = clear path) |
| Display & Architecture |
5-inch Touch Screen (800×480 res); M3+FPGA dual-chip controller; RS232 / TTL serial interface; 1 GB storage |
| Equipment Dimensions |
740 mm (L) × 500 mm (W) × 900 mm (H) |
| Power & Operating Environment |
220V ± 10%, 50 Hz, 100 W; Ambient temp: 0–40°C; Humidity: ≤ 85% RH; Fume hood operation required |
System Architecture & Testing Workflow of JYMD Smoke Density Tester
Standardized Testing Workflow:
- Prepare specimen according to ASTM D2843 / GB/T 8627 and place it on the specimen support inside the smoke box.
- Calibrate the 100% light transmittance baseline using the silicon photocell photoelectric system.
- Initiate the automated test sequence via the touch screen or PC interface; the main Bunsen burner automatically rotates into position and ignites.
- Apply propane flame to the sample for 4 minutes while the silicon photocell measures real-time light obscuration caused by smoke accumulation.
- The software calculates MSD and SDR curves automatically; upon test completion, the exhaust fan discharges waste gases out through the laboratory fume hood.
Target Customer Applications:
- Plastic resin manufacturers, polymer compounding plants, and synthetic material labs.
- Building materials quality inspection centers and architectural fire safety testing agencies.
- Automotive interior trims, cable jacket insulation, and composite panel manufacturing QA/QC labs.
JYMD Building Materials Smoke Density Tester FAQ
Q1: Is the JYMD tester fully compliant with ASTM D2843 for export market testing?
A: Yes. Standard GB/T 8627-2007 is derived from ASTM D2843. The 260 mm 45° Bunsen burner, 276 kPa propane pressure regulation, 4-minute exposure timing, and optical transmittance detection system comply directly with ASTM D2843 requirements.
Q2: Can multiple operators run or view tests from different computers?
A: Yes. The JYMD tester features dual operation modes and supports LAN network sharing, allowing several computers within the same local area network to connect, control, or monitor testing data simultaneously.
Q3: What type of combustible gas and operating environment is required?
A: The system requires Propane gas with a purity of at least 85% at an adjustable supply pressure of 0–0.3 MPa. The equipment should be installed inside a laboratory fume hood away from direct sunlight and forced drafts.
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