Limited & Temperature Oxygen Index Meter, ASTM D 2863, ISO 4589-2, ISO 4589-3

August 07, 2025

**Product Information**
Model No.: GD-4589H
Trademark: Gold
Origin: China
HS Code: 9031809090
Limited & Temperature Oxygen Index Meter
Limited & Temperature Oxygen Index Meter, ASTM D 2863, ISO 4589-2, ISO 4589-3


Introduction:
The LOI (Limiting Oxygen Index) Tester is a specialized device used to determine the minimum concentration of oxygen required to sustain combustion of a material. It uses a paramagnetic oxygen analyzer, known for its high precision, long service life, and low error rate. This makes it ideal for accurate and reliable testing in various industries. The TOI (Temperature Oxygen Index) Tester extends this functionality by measuring the temperature index of materials under heated conditions, with temperatures reaching up to 400°C. According to ISO 4589-3, high-temperature testing provides a more accurate assessment of a material’s combustibility compared to traditional oxygen index methods. The LOI Tester features a reduced glass chimney height, enabling faster and more efficient data collection through a DAQ (Data Acquisition) system connected to a PC. It also includes a foot switch for convenient operation, making it user-friendly and efficient. The equipment complies with multiple international standards such as ASTM, ISO, NES, and KS, ensuring global compatibility and reliability. Standards
- **Limited Oxygen Index:** ASTM D 2863, ISO 4589-2, NES 714
- **Temperature Oxygen Index:** ASTM D 2863, ISO 4589-3, NES 715
Specifications
Size LOI: 600(w) × 370(d) × 280(h) mm
TOI: 350(w) × 370(d) × 290(h) mm
Power Supply LOI: 220V, 60 Hz, 1A
TOI: 220V, 60 Hz, 10.25A
Weight LOI: 15 kg
TOI: 20 kg
Manual Provided
Required Utilities Bottled Oâ‚‚/Nâ‚‚, Portable Butane Gas, PC

Key Features
For Limited Oxygen Index:
- Paramagnetic Cell for precise oxygen measurement
- Auto and Manual modes for flexible control via PC or manual input
- Automatic Mass Flow Controller for consistent gas flow
- High-resolution display on software for easy reading of oxygen levels
- Easy-to-use specimen holder for quick sample attachment and removal
- Designed for hard or smooth samples
- Shortest gas path for rapid test results
- DAQ System ensures accurate and repeatable results aligned with international standards
- Foot switch for intuitive control of the DAQ system
- Compact and user-friendly design
- Oxygen Transducer from Humming Bird Sensing Technology for superior performance

For Temperature Oxygen Index:
- Tests materials under mixed gas conditions at temperatures up to 400°C
- High-efficiency band heater for pre-heating gases
- Temperature column allows observation of the sample while emitting heat radiation
- Temperature controller for precise adjustment of both pre-heater and column temperatures
- Air pump for safety during gas mixing and flammability testing
- Portable igniter included for ease of use

DAQ System Functionality
The DAQ system in the LOI Tester measures critical parameters such as oxygen concentration, standby temperature, ignition time, and combustion time. It automatically calculates deviations and prints out detailed result sheets. For the TOI Tester, the system uses a sample temperature thermocouple to measure gas temperature and performs elevated temperature oxygen index and flammability tests directly on the software, ensuring comprehensive and accurate analysis.

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