High precision smoke toxicity chamber
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The NES 713 Navy Engineering Smoke Toxicity Test Chamber is a specialized fire testing instrument designed to evaluate the toxicity of combustion products generated by materials under controlled burning conditions. In accordance with the NES 713 standard, the chamber determines the smoke toxicity index produced after the combustion of a 100 g specimen. The system provides a controlled flame source, uniform smoke mixing, and multi-point gas sampling to support accurate assessment of toxic gases released during material combustion. It is widely used in industries with extremely high fire safety requirements, including marine engineering, rail transportation, and aerospace applications.
Standards
The equipment is designed and manufactured in compliance with the following standard:
(1) NES 713 – Determination of the Toxicity Index of the Products of Combustion from Small Specimens of Materials
Accessories
(1) Stainless steel adjustable specimen mesh tray
(2) K-type thermocouples
(3) Precision rotameters for gas and air control
(4) Pressure gauge and pressure regulating valve
(5) Stainless steel exhaust duct
(6) PLC controller with touchscreen interface
Parameters
| Parameter | Specification |
|---|---|
| Flame height | 100–125 mm (blue flame) |
| Maximum hot spot temperature | 1150 ± 25 °C |
| Number of sampling ports | 12 |
| Exhaust capacity | ≥ 50 L/s |
| Gas supply | Compressed air, methane or natural gas |
| Power supply | AC 220 V, 50/60 Hz, 5 A |
| Equipment weight | Approx. 150 kg |
| Overall dimensions | 1.185 (W) × 700 (D) × 2.100 (H) mm |
Features
Rigid steel chamber with reinforced frame construction to ensure long-term structural stability
Large observation window with dark-coated inner walls to clearly observe the combustion behavior of specimens
Inner chamber walls treated with PTFE coating to reduce chemical corrosion caused by combustion gases
Built-in stirring fan to ensure uniform distribution of smoke and combustion gases inside the chamber
Top-mounted exhaust fan with stainless steel exhaust duct, automatically activated after test completion to discharge residual smoke
Integrated industrial design with panel-mounted structure, providing intuitive operation and ergonomic human–machine interface
High-voltage pulse automatic ignition system offering stable ignition performance and enhanced operational safety
Imported K-type thermocouples for accurate and reliable temperature measurement
Adjustable stainless steel specimen mesh tray allowing precise positioning relative to the flame
Imported precision rotameters for accurate control of gas and air flow rates
Branded pressure gauges, pressure regulators, and solenoid valves to control gas pressure and on/off status, ensuring safe operation
PLC and touchscreen control system enabling automatic control, detection, calculation, and data storage
Automatic waste exhaust mode to remove smoke upon test completion according to preset program logic
Manual and automatic test modes selectable to suit different testing requirements
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