High Temperature Oxygen Index Tester
Category：Flammability Tester
Introduction
The High-Temperature Oxygen Index (TOI) measuring instrument determines oxygen index at up to 125°C, offering better flammability assessment than traditional methods. As gas temperature increases, the oxygen index decreases. It follows ISO 4589 Part 3 or NES 715 standards, achieving high temps via preheated gas and furnace wall settings. A built-in pump conserves gas between tests, with nitrogen and oxygen bottles connected only during testing.
Application
Evaluating material combustion performance in R&D.
Quality control for product acceptance.
High-temperature safety assessment in industries like aerospace, automotive, and construction.
Standards
ISO 4589-3: Plastics – Oxygen index method (high-temperature test).
GB/T 2406.2 / ISO 4589-2: Plastic oxygen index test (normal/high-temperature).
ASTM D2863: Plastic oxygen index standard.
GB/T 5454-1997: Textile oxygen index method.
NES 714/715: UK oxygen index test standards.
Parameters
| Parameter | Specification |
|---|---|
| Control Mode | Full-color touchscreen (CN/EN) |
| Oxygen Range | 0–100% (±0.5% accuracy) |
| Temperature Range | Room temp–200°C |
| Heating Power | 1000W |
| Test Cylinder Dimensions | Inner dia. >75mm, Height >550mm |
| Gas Inlet | 7mm (O₂/N₂) |
| Power Supply | 220V, 50Hz |
| Dimensions | 700mm (L) × 430mm (W) × 770mm (H) |
| Weight | 55kg |
Feature
Testing Principle: Vertical sample combustion in oxygen/nitrogen gas flow. Combustion time and oxygen percentage are measured to determine LOI.
Advantages
High-Temperature Precision: Tests up to 200°C with rapid response (10s heating).
Accurate Oxygen Control: ±0.5% concentration accuracy (0–100% range).
User-Friendly Design: Full-color touchscreen with Chinese/English interfaces.
Versatile Testing: Suitable for diverse materials (plastics, rubber, textiles).
Safety Compliance: Meets global standards for reliable data.
Key Components
Heat-Resistant Cylinder: Borosilicate glass (inner dia. >75mm, height >550mm).
Stainless Steel Beads: Enhances gas flow uniformity (4mm dia., 80–100mm height).
Pilot Burner: 2mm inner dia., 400mm length for precise ignition.
Gas Control: Automated oxygen/nitrogen mixing with flow rate 12.1L/min.
FAQ
1.What is a High Temperature Oxygen Index Tester?
A High Temperature Oxygen Index Tester is a specialized instrument used to measure the oxygen index of materials at elevated temperatures. This test evaluates the ability of materials to support combustion in a high-temperature environment, which is crucial for applications in industries like aerospace, automotive, and construction.
2.How does the High Temperature Oxygen Index Test work?
The High Temperature Oxygen Index Test involves exposing a material sample to a controlled oxygen atmosphere at designated high temperatures. The test measures the minimum oxygen concentration required for the material to continue burning. This parameter is critical for assessing the flammability and safety of materials in environments where heat is a factor.
3.What materials can be tested using a High Temperature Oxygen Index Tester?
This tester can be used with various materials, including polymers, composites, textiles, and other combustible materials. It is particularly useful for assessing materials used in high-performance applications where resistance to ignition in high temperatures is essential.
4.Why is it important to measure the High Temperature Oxygen Index?
Measuring the High Temperature Oxygen Index is vital for safety and compliance with industry standards. A higher index indicates that the material is less likely to ignite and sustain combustion in high-temperature environments, which is essential for ensuring the safety of products and structures.
5.What industries commonly use High Temperature Oxygen Index Testing?
Industries such as aerospace, automotive, construction, and electrical insulation commonly use High Temperature Oxygen Index Testing. These sectors prioritize safety and fire resistance, particularly in applications where exposure to high temperatures occurs frequently.
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