ISO 4589-2 Limiting Oxygen Index Test Apparatus With Paramagnetic Oxygen Sensor

ISO 4589-2 Limited Oxygen Index Tester With Paramagnetic Oxygen Sensor

Introduction:

The Limited Oxygen Index Tester is designed to determine the minimum oxygen concentration required to sustain combustion of materials under controlled conditions. Utilizing an imported paramagnetic oxygen sensor and high-precision mass flow controllers, this analyzer ensures accurate and reliable results for homogeneous solids, laminated materials, foams, films, and textiles. It is ideal for laboratories and industries focused on fire safety evaluation, compliant with ISO 4589-2, GB/T 2406-2009, and other international standards.

Key Features:

• Paramagnetic Oxygen Sensor: Lifetime durability, eliminating frequent replacements.

• Auto-Adjustment System: PLC touchscreen controls oxygen concentration automatically.

• Gas Mixing Chamber: Ensures uniform gas distribution for precise measurements.

• Dual Gas Flow Meters: ±1% accuracy for nitrogen and oxygen flow control (1.0–15.0 L/min).

• Safety Compliance: Built-in automatic calibration and safety circuits.

• The airflow in the combustion tube is 40mm/s±2mm/s, and the concentration adjustment accuracy is ±0.1%;

• The airflow at the top of the combustion tube is 90mm±10mm/s;

• The portable igniter sprays downward 16±4mm, and the flame can be adjusted in the range of 10~30mm;

• The measurement time can reach 5min, and the accuracy is ±0.1s;

• Dual flow meter and pressure gauge device: accuracy ±1%;

• Working pressure: 0.1MPa;

• The glass tube is 500mm high and the inner diameter is 80mm.

Specifications:

Since 2008, GOLD has developed 70 kinds of fire testing instruments and served many industries such as building materials, aviation, rails, IMO, wire & cable, safety protection, and so on.

Quality and Certification:
We always adhere to a strict quality control system, and all products comply with international standards (such as ISO, IEC, ASTM, etc.). We provide customers with technical support and maintenance services for equipment to ensure the long-term reliability and accuracy of the equipment.

Customer Support:
We provide customers with comprehensive technical support and services, including equipment operation training, technical consulting and after-sales service, to ensure that customers can make full use of the equipment and improve test efficiency and accuracy.

Vision and Mission:
Our vision is to become a leader in the field of global fire test equipment, and provide customers with the most reliable fire safety testing solutions through continuous innovation and high-quality services. Our mission is to help customers improve product safety performance, ensure the safety of personnel and property, and promote sustainable development of the industry.