LOI-A Fully Automatic ASTM D 2863 Limited Oxygen Index LOI Analyzer

Introduction:

It is designed to test combustibility by oxygen concentration, letting the user know the minimum oxygen concentration as necessary for combustion.
The working principle is to place the specimen into the testing chimney, fill it with oxygen and nitrogen into the chimney, burn the specimen, and then measure the minimum concentration of oxygen to support continuous combustion.

Reference Standards:

1. ASTM: ASTM D2863: Standard Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index).
2. ISO: ISO 4589-2: Determining the minimum volume fraction of oxygen in admixture with nitrogen will support the combustion of small vertical test specimens under specified test conditions. The results are defined as oxygen index (OI) values.
3. NES: NES 714.

Parameters:

Features:

1. Adopts England's original Servomex Paramagnetic type oxygen sensor, which accuracy can be up to +/-0.1%;
2. The sensor is better than the traditional electrochemical sensor because it doesn't need to change the oxygen battery, so, it has a long lifetime more accuracy, and a faster response time.
3. Equipped with 2pcs Mass Flow Controller(MFC) to control N2 and O2 mixing ratio;
4. Equipped with high-temperature quartz glass tank;
5. Equipped with supported and unsupported sample clamps;
6. Equipped with portable ignition device, gas tank connector, accurate pin valve to adjust the flame;
7. Digital setting N2 and O2 concentration;
8. Computer+LABVIEW software to control N2 and O2 mixing ratio, read O2 concentration in mixing chamber, and store&print out test results;
9. Reserve a calibration port to calibrate the sensor;
10. Stainless steel air channel design, equipped with one-way fire-resistance valve, magnetic valve, and fine filter, so, it is stable and safe;
11. Patented design gas mixing chamber, which ensures the gases can mix in a short time, and data is more accurate;
12. Resolution: 0.1%
13. Accuracy: +/-0.2%
14. Response time: <300ms
15. Oxygen stability time: <30s

Limited Oxygen Index Tester Series:

1. OI Electro-chemistry Limited Oxygen Index Tester

2. LOI Electro-chemistry Limited Oxygen Index Tester

3. COI Paramagnetic Limited Oxygen Index Analyzer

4. LOI-A Automatic Limited Oxygen Index Analyzer