Introduction:
The high temperature oxygen index tester is designed and de-veloped according to ISO4589-3 (Elevated-temperature test) and British Naval Engi-neering Standard NES 715. Based on the general intelligent oxygen index instrument,the high temperature oxygen index tester adds a electric-heating device at the position of the combustion cylinder to preheat the mixed gas and test the ignition temperature of the different materials at a certain oxygen concentration. The tester is used to assess the combustion performance of a self-supporting vertical strip or a sheet-like plastic material of 10.5 mm thickness and is also applicable to the determination of the burn-ing performance of a vertically supported.
Standards:
ISO 4589-3 Plastics Test of burning behaviour by oxygen index –Part 3: high temperature test.
NES 715 The temperature index Testing of small specimens of material.
ISO4589-3:1996 Plastics Test of burning behaviour by oxygen index. Part 3:elevated
Features:
Imported oxygen concentration sensor (paramagnetic oxygen concentration sensor for model F248A, electrochemical oxygen concentration sensor for model F248D ) showing the oxygen concentration accuracy of ± 0.1%.
High temperature resistant quartz glass tube, outlet diameter 40mm.
Supportive and non-supportive sample holder.
Portable ignition, easy to operate.
Patented gas flow control unit which equipped with mass flow controller mixing nitrogen and oxygen can precisely control the gas flow.
After setting the oxygen concentration on screen, PLC control system can automatically adjusts the oxygen concentration according to the set value , precise and easy control.
The gas mixing chamber with patented design can ensure that the oxygen concentration measurement more accurate and the mixture of oxygen and nitrogen more better.
LCD real-time can display flow, time , test data and other parameters.
Dual flow meter and pressure gauge device: accuracy of ± 1%.
Equipped with special ignition.
Technical Parameters:
Oxygen concentration measurement range: 0-90%.
Oxygen concentration accuracy: ± 0.1%
Flow meter range: 1.0 ~ 10.0L / min
Oxygen concentration measurement accuracy: ± 0.4%.
Response time: 125 ℃.
Oxygen concentration setting range: 10% to 60% of oxygen concentration (±0.1%).
Oxygen & nitrogen flow can be controlled at the set value, the control accuracy: ±0.01L / min, resolution: 0.01L / min.
Oxygen concentration step size: settable from 0.1%.
Burning time: 1 s to 300 s.
Igniter flame height: 15 ~ 20 mm (adjustable).
Ignition time: 15s ± 1s
Quartz glass burning cylinde
