ISO 5659 NBS Smoke Density Chamber Test ASTM E662 Flammability Tester

ISO 5659 NBS Plastic Smoke Density Chamber ASTM E662 Flammability Tester

ISO 5659 NBS Plastic Smoke Density Chamber Product Introduction:

The test method of the NBS smoke density test box originated from the National Institute of Standards and Technology (NIST, formerly NBS) and is now widely used in multiple testing fields. This test method is suitable for evaluating the smoke density level of plastic products, non-metallic materials for rail transit, non-metallic materials for ships, and wire and cable products. Common applicable standards include ASTM E662, ISO 5659-2, and the NES 711 smoke density test method in the military national standard. Compared with the traditional building material smoke density test method, this standard provides more accurate test results. Its optical sensor uses a highly sensitive photomultiplier tube, which can accurately capture subtle changes in the smoke in the box. In addition, by selecting other test equipment, such as the Dräger gas detection tube, smoke toxicity tests that meet aviation standards can be performed; if combined with the FTIR Fourier transform infrared device, it can also achieve qualitative and quantitative analysis of smoke components, further expanding its application range.

ISO 5659 NBS Plastic Smoke Density Chamber Standards:

• ASTM E 662 : Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials
• ISO 5659-2 : Plastics-Smoke generation -Part 2: Determination of optical density by a single-chamber test
• NES 711 : Determination of the Smoke Index of Products of combustion from Small Specimens of Material

ISO 5659 NBS Plastic Smoke Density Chamber Technical Specification:

Box structure:

1. The test box consists of a box, a sample box, a radiation cone, an igniter, a light transmission and measurement device, and other related control devices
2. Ergonomic structural design and control design; the box adopts a full-door design; the door lock design facilitates one-time closing of the door; optimizes the operation process
3. The test box door can be fully opened, which is convenient for loading and unloading samples and cleaning the box
4. The front door is hinged and equipped with a window and a movable opaque shading plate that can block the window to prevent light from entering the sealed box
5. The controller is located on the side of the box for easy operation. The controller can be viewed even when the door is closed
6. The safety flameout board is easy to replace and safer to operate
7. A gas measurement port can be provided for testing gas toxicity
8. The coating of the test box is easy to clean and resistant to chemical corrosion

Combustion device:

1. Heating cone: power 2600W, input temperature range 0~1000℃, can be stabilized within ±2℃ within 50 minutes, can provide 10KW/m²-50KW/m² irradiance
2. Use mass flow controller and differential pressure sensor to improve the accuracy of manometer and realize automatic leakage test
3. Ignitor is equipped with automatic ignition device; flame length 30mm±5mm; blue flame according to standard, with yellow tip

Smoke density measurement system:

1. Smoke density and temperature are displayed digitally, which is easier to view and more accurate.
2. Photoelectric detection components include photomultiplier tubes, magnifying filters, light gates, filters, neutral filters, lenses, optical windows, etc.
3. The light source is a 6.5V incandescent light source;
4. An optical dark box is installed on the top of the box, and the light source is a side window type photomultiplier, and the transmittance accuracy can reach 0.001%
5. Achromatic lens
6. Silicon photocell
7. High-gain low-noise amplifier control circuit

Control System:

1. Automatically complete the test; various signals are automatically collected
2. Brand computer
3. Printer is optional
4. Voltage: 220V Power 4KW
5. Propane gas is provided by the customer