Full Automatic Oxygen Index Tester F101M
Category：Textile Functional Tester
Introduction
The F101M Full Automatic Oxygen Index Tester is designed to determine the minimum oxygen concentration required to sustain the combustion of materials under specified test conditions. The instrument adopts a stepping proportional valve and closed-loop oxygen concentration control technology to automatically regulate and maintain oxygen concentration during testing, improving measurement stability and accuracy. It is suitable for routine laboratory testing and quality control applications.
Application
The instrument is used for Limiting Oxygen Index (LOI) determination of the following materials and products:
(1) Soft and rigid plastics
(2) Rubber materials
(3) Textile fabrics and nonwovens
(4) Building and insulation materials
(5) Wire and cable sheath materials
(6) Fire doors and flame-retardant products
(7) Polymer composite materials
(8) Research and quality control samples in laboratories
Standard
GB/T 2406.2-2009
Parameters
| No. | Item | Specification |
| 1 | Oxygen sensor | Imported oxygen sensor, digital display of oxygen concentration without calculation, higher precision and accuracy, range 0–100% |
| 2 | Digital resolution | ±0.1% |
| 3 | Measurement accuracy | Class 0.1 |
| 4 | Oxygen concentration control | Touch screen to set program for automatic adjustment of oxygen concentration |
| 5 | One-key calibration | One-key calibration of accuracy |
| 6 | One-key concentration matching | One-key matching of concentration |
| 7 | Stability alarm | Automatic prompt alarm when oxygen concentration is stable |
| 8 | Timing function | Built-in timing function |
| 9 | Data storage | Experimental data can be stored |
| 10 | Data query | Historical data can be queried |
| 11 | Data clearing | Historical data can be cleared |
| 12 | Combustion diameter selection | Optional combustion diameter of 50mm |
| 13 | Power failure prompt | Air supply failure prompt |
| 14 | Sensor fault prompt | Oxygen sensor fault prompt |
| 15 | Gas misconnection prompt | Oxygen/nitrogen misconnection prompt |
| 16 | Sensor aging prompt | Oxygen sensor aging prompt |
| 17 | Standard oxygen concentration input | Standard oxygen concentration input |
| 18 | Combustion cylinder diameter | Two common specifications available for setting combustion cylinder diameter |
| 19 | Flow adjustment range | 0–20L/min (nitrogen) and 0–1200L/h (oxygen) |
| 20 | Quartz glass cylinder | Two specifications available (inner diameter ≥ 75mm or inner diameter ≥ 85mm) |
| 21 | Gas flow rate in combustion cylinder | 40mm ± 2mm/s |
| 22 | Overall dimensions | 650mm × 400mm × 830mm |
| 23 | Test environment | Ambient temperature: room temperature ~ 40℃; relative humidity: ≤70% |
| 24 | Input pressure | 0.25–0.30MPa |
| 25 | Working pressure | Nitrogen: 0.15–0.20MPa; Oxygen: 0.15–0.20MPa |
| 26 | Sample clamp application | Applicable to soft and hard plastics, various building materials, textiles, fire doors, etc. |
| 27 | Ignition system | Propane (butane) ignition system, ignition nozzle made of a metal tube with a nozzle of inner diameter Φ2±1mm at the end, freely bendable, can be inserted into the combustion cylinder to ignite the sample, flame length: 16±4mm, size 5mm–60mm freely adjustable |
| 28 | Gas supply | Industrial-grade nitrogen and oxygen, purity >99% (Note: Gas source and chain joints to be provided by the user)Tips: For the oxygen index tester test, one bottle each of industrial-grade oxygen/nitrogen with purity not less than 98% is required as the gas source. Due to the high-risk transportation of the above gases, they cannot be provided as accessories of the oxygen index tester and can only be purchased by the user at the local gas station. (To ensure the purity of the gas, please purchase at the local regular gas station) |
| 29 | Power supply requirement | AC220V (±10%), 50Hz |
| 30 | Maximum power consumption | 150W |
| 31 | Self-supporting sample clamp | Can be fixed at the center of the combustion cylinder and clamp the sample vertically |
| 32 | Non-self-supporting sample clamp | Can fix two vertical edges of the sample on the frame at the same time (optional / applied to soft non-self-supporting materials such as textiles) |
Features
(1) Full-color touchscreen control: Simply set the oxygen concentration value on the touchscreen, and the program will automatically adjust to the oxygen concentration balance and emit a beeping sound, eliminating the hassle of manually adjusting the oxygen concentration;
(2) The use of a stepping proportional valve greatly improves the flow control accuracy. Closed-loop control ensures that the oxygen concentration drifts during testing and the program automatically adjusts back to the target value, avoiding the drawback of traditional oxygen index meters that cannot adjust the oxygen concentration during testing, thus greatly improving testing accuracy.
FAQ
What is this product?
The F101M Full Automatic Oxygen Index Tester is a precision instrument used to determine the minimum oxygen concentration required to sustain combustion of materials under controlled conditions. It adopts closed-loop oxygen concentration control and touchscreen automation to ensure stable and repeatable test results.
What is this product used for?
It is used to evaluate the flammability and combustion behavior of polymer materials, textiles, building materials, and other combustible products by measuring their Limiting Oxygen Index (LOI). The results are commonly applied in material development, quality control, and fire performance assessment.
Why is this product important?
The oxygen index is a key fire safety indicator. Accurate LOI testing helps manufacturers:
(1) Assess material flame resistance
(2) Verify compliance with fire safety standards
(3) Support R&D of flame-retardant formulations
(4) Improve product safety and reliability
The F101M’s closed-loop control significantly reduces oxygen concentration drift, improving test accuracy compared with traditional models.
What industries is this product suitable for?
The instrument is suitable for laboratories and quality control departments in:
(1) Plastics and polymer manufacturing
(2) Textile and nonwoven production
(3) Building and insulation materials
(4) Wire and cable materials
(5) Fire protection products (e.g., fire doors)
(6) Research institutes and third-party testing laboratories
What types of this product are available?
Oxygen index testers are generally available in:
(1) Manual oxygen index testers
(2) Semi-automatic oxygen index testers
(3) Full automatic closed-loop oxygen index testers (such as F101M)
Different configurations may include optional non-self-supporting sample clamps and different quartz cylinder diameters to suit various material types.
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