Smoke Density Testing for Wire And Cable
The Cable & Wire Smoke Density Tester is a precision laboratory instrument designed to measure the smoke density of insulated metallic conductor cables and optical fiber cables under controlled horizontal burning conditions. It evaluates the smoke optical density, providing essential data for the development of low-smoke, halogen-free cables and other fire-safe materials.
The instrument is widely used in cable manufacturing, quality control laboratories, and fire safety research centers to ensure compliance with national and international safety standards. IEC61034 requires a smoke chamber of 3 meters in length, which this tester accommodates, ensuring accurate measurement of smoke emission characteristics.
Application
The Cable & Wire Smoke Density Tester is suitable for:
(1) Testing insulated power and signal transmission cables, including low-smoke and halogen-free types.
(2) Assessing optical fiber cables under specific combustion or radiation conditions.
(3) Measuring smoke optical density to evaluate visibility and fire safety in confined spaces.
(4) Supporting compliance testing for fire safety in buildings, tunnels, ships, and public transport.
(5) Research and development of fire-retardant and low-smoke cable materials.
(6) Laboratory testing to generate data for risk assessment in emergency evacuation scenarios.
Compliance Standards
Design Standards:
GB/T17651.1-1998 – Determination of smoke density of cables and optical fibers under specific conditions, Part 1: Test apparatus
GB/T17651.2-1998 – Determination of smoke density of cables and optical fibers under specific conditions, Part 2: Test procedure
Reference Standards:
IEC61034-1:1997 – Measurement of smoke density of cables under specified conditions, Part 1: Apparatus
IEC61034-2:1997 – Measurement of smoke density of cables under specified conditions, Part 2: Test procedure
IEC60134 – Electrical rating of electron tubes and similar semiconductor devices
Technical Parameters
| Parameter | Specification |
|---|---|
| Smoke chamber size | IEC61034-compliant, 3 meters in length |
| Smoke density measurement range | 0–100% |
| Measurement accuracy | ±3% |
| Light source | High-stability lamp for beam transmission |
| Photodetector | Silicon photodiode with 0–100% transmittance |
| Combustion gas | Propane, Butane, or LPG (user-supplied) |
| Burner angle | 45° relative to sample |
| Test sample length | IEC-compliant, typically up to 1–2 meters |
| Control system | Touchscreen + computer dual operation |
| Data acquisition | Real-time measurement and automatic smoke density calculation |
| Environmental requirements | Temperature: 0–40°C, Relative humidity ≤85% |
| Power supply | 220V ±10%, 50 Hz, 100 W |
| Exhaust system | Integrated high-efficiency fume extraction |
| Dimensions | Approx. 740 × 500 × 900 mm |
Key Features
Dual control mode: touchscreen and computer for flexible operation.
Supports multiple PCs on LAN for real-time monitoring and data sharing.
Automatic burner rotation with precise positioning.
Proprietary software for data logging, real-time curve plotting, and automatic smoke density calculation.
Standard calibration filters ensure measurement accuracy within 3%.
Automated ignition, timing, and fume extraction for simplified workflow.
High-quality construction with durable smoke chamber and optical components.
FAQ
Q1. What types of cables can be tested?
All insulated metallic conductor cables and optical fiber cables designed for power or signal transmission, including low-smoke, halogen-free types.
Q2. How is smoke density measured?
A light beam passes through the smoke generated by the burning cable in a controlled chamber. The decrease in light transmittance is measured to calculate specific optical density and smoke density.
Q3. Can the instrument support multiple users?
Yes, multiple computers can operate and monitor the device simultaneously via LAN, facilitating collaborative testing.
Q4. What gases are used for the test?
Propane, Butane, or LPG, with user-supplied connections.
Q5. Is this tester compliant with international standards?
Yes, it complies with GB/T17651.1-2 and IEC61034-1-2, making it suitable for both domestic and international fire safety testing.
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