ASI Elevated-temperature Oxygen Index Tester ASI-LOI

Standard: ISO 4589-3, NES 715

Technical Parameters:

• The oxygen concentration measuring range: 0~90%;
• Oxygen concentration accuracy: ±0.1%;
• Nitrogen mass flow controller range: 1.0~15.0 L/min, precision: 2%;
• Oxygen mass flow controller range: 1.0~15.0 L/min, precision: 2%;
• Sensor response time < 2 s;
• Theresponse time of tester < 10 s (includes oxygen concentration setting, regulating flow, mixing and combustion);
• Flow meter range: 1.0~15.0 L/min;
• Combustion cylinder airflow rate: 40 mm/s ±2 mm/s, accuracy ±0.01%;
• Gas flow rate at combustion tube top: 90 mm ±10 mm/s;
• Portable ignition: injection down 16 ±4 mm, adjustable;
• Measurement time >5 min, accuracy ±0.5 s;
• Double flow meter and pressure gauge: accuracy ±1%;
• Work pressure: 0.1 Mpa;
• Glass cylinder: height 500 mm, inner diameter 80 mm.

Main Features:

• Equipped with imported paramagnetic oxygen concentration sensor (no service life limit);
• Equipped with high temperature quartz glass tube (outer diameter: 40 mm, inner: 36 mm, height: 450 mm); secondary cylinder: 5~10 mm, same height;
• Equipped with support, cannot support specimen holders;
• Japan import nitrogen & oxygen mass flow controller, precision 0.01 L/min, auto control;
• Patented gas flow mixing control unit for accurate gas flow;
• PLC system auto adjusts oxygen concentration to set value;
• Patented gas mixing chamber ensures accurate oxygen/nitrogen mix;
• LCD shows real-time flow, time, results, parameters;
• Double flow meters and pressure meter: accuracy ±1%;
• Special igniter, easy operation.

Heating unit:

• The heating device power is 1000 W;
• Test tube test temperature is 25 C ~400;
• Heating device equipped with thermal insulation;
• The heating pipe temperature accuracy: 125℃ below 2 degrees, 125℃ above + 3 C(according to the standard requirements).

Control System:

• PLC touch screen with a higher degree of test automation;
• The system automatically adjusts the oxygen concentration after the value is set;
• The key electrical components are imported brand, accurate, reliable and durable;
• This tester is equipped with an automatic calibration system to avoid the influence of the oxygen sensor on the test results due to the drift of the environmental impact.
• One-button sensor automatic calibration system is convenient and efficient, to avoid customers need to be equipped with standard gas periodic calibration trouble.
• With a safety protection circuit.