Elevated-temperature Oxygen Index Tester

TESTech Instrument (Suzhou) Technologies is one of the leading manufacturers and suppliers of elevated-temperature oxygen index tester in China. Welcome to wholesale premium test equipment at competitive price from our factory. If you have any enquiry about quotation, please feel free to email us.

The TESTECH elevated-temperature oxygen index tester is designed and manufactured according to ISO 4589-3 elevated-temperature testing requirements and British naval engineering standard NES 715.

Based on the common intelligent oxygen index tester, this model adds an electric heating device at the combustion tube position to preheat the mixed gas and to test the ignition temperature of different materials at a specified oxygen concentration.

It is suitable for determining the combustion performance of vertical self-supporting bars, plastic sheets with a thickness of 10.5 mm, and vertically supported soft sheet or film materials under elevated-temperature test conditions.

• Oxygen concentration measuring range: 0 to 100 percent.
• Oxygen concentration accuracy: ±0.1 percent.
• Nitrogen mass flow controller range: 1.0 to 15.0 L/min, accuracy 2 percent.
• Oxygen mass flow controller range: 1.0 to 15.0 L/min, accuracy 2 percent.
• Sensor response time: less than 2 seconds.
• Overall tester response time: less than 10 seconds, including concentration setting, flow adjustment, mixing, and discharge.
• Flow meter range: 1.0 to 15.0 L/min.
• Combustion cylinder airflow rate: 40 mm/s ±2 mm/s, concentration regulation accuracy ±0.1 percent.
• Gas flow rate at the top of the combustion tube: 90 mm ±10 mm/s.
• Portable igniter with downward injection 16 ±4 mm, adjustable.
• Measurement time greater than 5 minutes, accuracy ±0.5 s.
• Double flow meter and pressure gauge accuracy ±1 percent.
• Working pressure: 0.1 MPa.
• Glass cylinder height 500 mm, inner diameter 80 mm.

• Equipped with an imported paramagnetic oxygen concentration sensor with no service life limitation.
• High-temperature quartz glass tube with 40 mm outlet inner diameter, internal cylinder above 75 mm inner diameter and above 450 mm height, and matched external cylinder clearance of 5 to 10 mm.
• Includes specimen holders for both self-supporting and non-self-supporting samples.
• Equipped with imported Japanese nitrogen and oxygen mass flow controllers with precision of 0.01 L/min.
• Patented gas flow mixing control unit for accurate control of oxygen and nitrogen flow.
• PLC touch screen system automatically adjusts oxygen concentration after the target value is set.
• Patented gas mixing chamber ensures more complete oxygen and nitrogen mixing and more accurate oxygen concentration measurement.
• Color LCD touch screen displays flow, time, and test results in real time.
• Double flow meters and pressure meter with ±1 percent accuracy.
• Special igniter for easy operation.

• Heating device power: 1000 W.
• Test tube temperature range: 25 C to 400 C.
• Heating unit equipped with thermal insulation protection.
• Heating pipe temperature accuracy: ±2 C below 125 C and ±3 C above 125 C according to the standard.

• PLC with touch screen provides a higher degree of test automation.
• The system automatically adjusts oxygen concentration after the value is set.
• Key electrical components use imported brands for accurate, reliable, and durable performance.
• Automatic calibration system avoids oxygen sensor drift caused by environmental effects.
• One-button sensor automatic calibration system improves convenience and avoids frequent standard gas calibration.
• Equipped with a safety protection circuit.

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