NBS Smoke Density Chamber ISO 5659-2 ASTM E662 for Plastic Flammability Testing

Product Specification

Flammability Test Instrument: NBS Smoke Density Chamber ISO 5659-2, ASTM E662

Standard:

GB/T 8323.2-2008

ISO 5659-1: Smoke generation from plastics - Part 1: Principles of optical density testing.

ISO 5659-2: Smoke generation from plastics -part 2: Measurement of the optical density of materials by single box test.

ASTM F814:Test Method for Specific Optical Density of Smoke Generated by Solid Materials for Aerospace Applications

BS 6401: British Standard Method for Measurement, in the laboratory, of the specific optical density of smoke generated by materials 

DIN 5510-2: Preventive fire protection in railway vehicle parts 2: Fire behaviour and fireside effects of material and parts

Introduction:

The NBS Smoke Density Chamber is used widely in all industrial sectors for the determination of smoke generated by solid materials and assemblies mounted in the vertical position within a closed chamber.

This widely used test instrument measures the specific optical density of smoke generated by materials when an essentially flat specimen, up to 25 mm thick, is exposed vertically to a radiant heat source of 25 kW/m², in a closed chamber, with or without the use of a pilot flame.

This method can be used to detect the smoke density level of plastic products, non-metallic materials for rail transit, non-metallic materials for ships, wire and cable products, etc.

According to the test method, the NBS Smoke Density Chamber is based on ASTM E662, ISO 5659-2. The standard has more accurate test results than the previous building material smoke density tester method, and the optical sensor uses a more precise photomultiplier tube to capture the slight change of flue gas content in the box. 

Feature:

• The test chamber is composed of a box, a sample box, a radiation cone, an igniter, a light transmission and measuring device, and other related control devices.
• Test chamber with a full-width opening door, allowing easy access for sample loading and chamber cleaning.
• Controls are mounted beside the chamber for convenient operation. They are not obstructed when the door is open.
• Smoke density and temperature are on digital displays for easier use and greater accuracy.
• Safety blow-out panel, easily replaceable, allows for safe operation of the test method.
• Gas measurement ports are provided for optional measurements of toxic gases.
• The cabinet is designed with a standard 19" rack, for simple addition of gas analyzers, and chart recorder, and other control units.
• Computer software.

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