High temperature oxygen index tester high temperature oxygen index method, after mixing O2 and N2, measure just enough to maintain the sample combustion of low oxygen concentration of zui (molar concentration). The mass flow controller is used to accurately control the flow rate of O2/N2, which is mixed through the mixing chamber to fully ensure the accuracy of concentration control. The paramagnetic oxygen sensor is used to detect O2 concentration in Britain, with good performance. At the same time, the instrument is equipped with high temperature test module for ISO 4589-3-2006, and the temperature control is accurate and efficient. It can also meet the requirements of general users.

1.1 test standards

The glawing 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 4589-2-20 6,

ISO 4589-3-20 6,

ASTM D2863-2000

1.2 related terms

Oxygen index: when mixed oxygen and nitrogen at 23±2℃ is added, it just maintains the minimum oxygen concentration of material combustion, expressed as volume fraction.

High temperature oxygen index: the limit oxygen index value of a material in a specific high temperature environment.

2.

Display screen: test operation, control and report inquiry;

Power switch: press the switch to switch on the power;

Emergency stop button: stop cutting off the power of the instrument in case of emergency;

Timing button: press the combustion timing button to start the combustion timing;

O2, N2, air pressure control switch: the external gas into the instrument can be used gas;

O2, N2, air pressure gauge: show the gas pressure into the instrument;

Combustion tube: the place where the combustion test is conducted. The top tube cover provides stable gas flow.

Base: air is injected and the test sample is supported. Glass beads and metal mesh are installed.

Igniter: used to ignite gases