15921758826
15921758826
Shanghai Weitao automation equipment Co., Ltd
Contact person: Mr. Lu
Tel: 15921758826
Address: 2312 Weiqing East Road, Shanyang Town, Jinshan District, Shanghai
1.1 Principle of testing
The limiting oxygen index tester is a mixture of O2 and N2 to measure the low oxygen concentration (molality) of ZUI required to maintain the sample combustion.
This instrument USES the mass flow controller to accurately control the flow rate of O2/N2. It mixes through the mixing chamber to fully ensure the accuracy of concentration control. It adopts the British paramagnetic oxygen sensor to coordinate with the detection of O2 concentration, with good performance.
It is manufactured for the test users with higher accuracy requirements, and can also meet the requirements of general users.
1.2 Test Standard
This glow-wire tester meets but is not limited to the following standards:
GB/T 2406.2-2009, GB/T 5454-1997, GB/T 10707-2008, ISO 4589-2-2006, ASTM D2863-2000
1.3 Related terms
Oxygen index: the minimum oxygen concentration of material combustion is just maintained when oxygen and nitrogen mixed gases are injected at 23±2℃, expressed in volume fraction.
1.4 Composition and use of the instrument
Display screen: conduct test operation, control and report inquiry;
Power switch: Press the switch to switch on the power;
Emergency stop button: in case of emergency, stop and cut off the power of the instrument;
Ventilation switch: Press to start ventilation and press again to stop ventilation;
Timing button: Press the combustion timing button to start the combustion timing;
O2, N2 pressure regulating switch: reduce the pressure of the external gas to the gas available for the instrument;
Pressure gauge O2, N2: Indicates the gas pressure entering the instrument;
Combustion cylinder: the position where the combustion test is carried out. The top cylinder cover provides stable gas flow.
Base: gas is supplied and the test sample is supported, with glass beads and metal mesh;
Igniter: Used to ignite gas
Samples shall be taken in accordance with material standards, and the samples taken shall be able to prepare at least 15 samples.
It can also be carried out according to GB/T 2828.1-2003 or ISO 2859-2:1985.
Note: for materials whose oxygen index is known to fluctuate within ±2, 15 samples are required.
For materials with unknown oxygen index or showing unstable combustion characteristics, 15 ~ 30 samples are required.
The oxygen index tester is a kind of instrument made according to the technical conditions stipulated by the national standard GB2406-93.
Used to determine the concentration (percentage by volume) of oxygen required by the polymer during combustion.
The oxygen index value of the polymer is the percentage of the volume of the lowest oxygen in the mixture of oxygen and nitrogen required to maintain a combustion time of 50 mm or 3 minutes after ignition of the substance.
Technical parameters
1. Inner diameter of combustion cylinder: 100mm
2. Combustion cylinder height: 450mm
3. Accuracy of flow meter: level 2.5
4. Accuracy of pressure gauge: level 2.5
5. Air source: oxygen specified in GB3863 and nitrogen specified in GB3864
6. Test environment: Temperature: 10-35 ℃, humidity: 45%-75%
7. Input pressure: 0.2-0.3 Mpa
8. Working pressure: 0.05-0.15mpa
9. Sample types: self-supporting materials and non-self-supporting materials
The main purpose
Used for testing the burning performance of various textiles including woven, knitted, non-woven, etc., and also for testing the burning performance of plastics, rubber, paper, etc
Instrument characteristics
1. Two glass rotameters control oxygen and nitrogen flow rates respectively.
2. Special manual igniter is safe and reliable for ignition.
3, the instrument structure is simple, easy to operate.
Technical indicators
1. Combustion cylinder specification: Quartz glass cylinder inner diameter: 75mm, height: 450mm.
2. Oxygen concentration adjustment range: 10% ~ 60%
3. Sample inner frame size: 140mm×38mm.
Applicable standards
National standard: GB/T5454 -- 1997 Determination of Combustion Performance of Textile Batches -- Determination of Oxygen Index
GB/T2406 -- 1992 Test Methods for Combustion Properties of Plastics -- Oxygen Index Method
Intelligent oxygen index tester
Founded in 2011, Shanghai Huitao is a team of experienced engineers and emerging design experts. The company focuses on R & D, design and production of high quality laboratory instruments for textile testing. Headquartered in Shanghai, the company provides high-quality testing instruments and high-quality professional services for companies, academic research institutions and testing institutions of various countries.
Shanghai Huitao continuously launched products to meet the experimental needs of the textile industry. It has advanced microclimate comfort test equipment, such as thermal manikin, thermal and humidity resistance tester, MMT and other test equipment. Meanwhile, it also provides air permeability tester, hydrostatic pressure tester and thermal protective clothing performance test equipment required for new product development. In addition, we have developed and produced many basic textile testing instruments, including washing color fastness tester, fabric abrasion tester, pilling tester, rubbing color fastness tester, ironing fastness tester and perspiration color fastness tester. These high-quality products are widely used in textile testing field. In order to meet the experimental needs of users, we also provide you with innovative and practical testing instruments. The products include fiber tester, yarn tester, fabric tester, carpet tester, geotextile tester and other related testing equipment.
The company sells our products through distributed distribution partners who provide high-quality products, services and support to our customers all over the world. All the products are in line with international quality standards and specifications, and can perform outstanding and accurate product performance.
