ISO 4589-3 NES 715 High Temperature Oxygen Index Tester For Insulation Foam Plastic Materials

High Temperature Oxygen Index Tester Introduction:

The high temperature oxygen index tester is designed and developed according to ISO 4589-3 (Elevated-temperature test) and NES 715 (British naval engineering standard), and is specifically used for evaluating the flame retardant properties of materials in high temperature environments. The equipment integrates a precision electric heating system based on the intelligent oxygen index tester, which can accurately preheat the mixed gas in the combustion tube and realize the determination of the ignition temperature of the material under different oxygen concentration conditions. It is suitable for the combustion characteristics analysis of plastics, composite materials and vertically fixed soft film materials of self-supporting vertical strip specimens (thickness ≤10.5mm), and can meet the stringent testing requirements for high temperature fire resistance of materials in aerospace, shipbuilding and other fields. Its temperature control system supports multi-stage programmed heating, which can simulate the combustion behavior of materials under actual high temperature conditions, and provide key data support for material research and development and safety certification.

High Temperature Oxygen Index Tester standard:

* ISO 4589-3:Plastics - Determination of burning behaviour by oxygen index - Part 3: Elevated-temperature test

* NES 715:Determination of the combustion behavior of plastics by oxygen index method

High Temperature Oxygen Index Tester Technical Specification:

High Temperature Oxygen Index Tester  Features:

1. Equipped with imported paramagnetic oxygen concentration sensor, no service life limit (unlike electrochemical sensors, the service life is only about 1 year)
2. Equipped with high temperature resistant quartz glass cylinder, outlet inner diameter 40mm, inner cylinder (inner diameter greater than 75mm, height greater than 450mm), outer cylinder (the gap with the inner cylinder is between 5mm~10mm, the height is the same as the inner cylinder);
3. Equipped with self-supporting sample specimen clamp and non-self-supporting sample specimen clamp;
4. Equipped with nitrogen and oxygen mass flow controllers imported from Japan, accurately control the gas flow, the accuracy is 0.01L/min (unlike float flowmeters, manual adjustment of oxygen and nitrogen flow);
5. Patented gas flow mixing control unit, equipped with nitrogen and oxygen mass flow controllers, accurately control gas flow;
6. After the oxygen concentration is set on the screen, the PLC LCD touch screen control system automatically adjusts the oxygen concentration according to the set value. Precise and convenient control;
7. Patented gas mixing chamber ensures more accurate oxygen concentration measurement and more complete mixing of oxygen and nitrogen;
8. Color LCD touch screen displays flow, time, experimental results and other parameters in real time;
9. Dual flow meter and pressure gauge device: accuracy ±1%;
10. Equipped with a special igniter, easy to operate.

Heating device:

1. Heating device power 1000W;
2. Test tube test temperature 25℃~400℃;
3. Heating device is equipped with thermal insulation protection;
Heating tube temperature accuracy: ±2℃ below 125℃, ±3℃ above 125℃ (according to standard requirements)

Control system:

1. PLC with touch screen test has a higher degree of automation;
2. After the oxygen concentration value is set, the system automatically adjusts the oxygen concentration;
3. Key electrical components are imported brands, accurate, reliable and durable;
4. The equipment is equipped with an automatic calibration system to prevent the oxygen sensor from drifting due to environmental influences and affecting the test results.
5. The one-button sensor automatic calibration system is convenient and fast, avoiding the trouble of customers needing to equip standard gas for regular calibration.
6. Equipped with a safety protection circuit.