WJHC-5氧指数测定仪
氧指数测定仪符合塑料燃烧性能试验方法氧指数法GB/T2406-2008和纺织品燃烧性能试验氧指数法GB/T5454等标准国家标准，用于评定聚合物在规定试验条件下的燃烧性能，即测定聚合物刚好维持燃烧的**氧的体积百分比浓度。适用于塑料、橡胶、纤维、泡沫塑料、软片和薄膜及纺织等材料的燃烧性能测定。
数显氧指数测定仪是一种测定聚合物燃烧性准确、重现性好、方便快捷的检测仪器。本仪器不仅可以作为鉴定聚合物难燃性的手段，还可以作为一种研究仪器。
一、WJHC-5氧指数测定仪产品优势：
1.全彩触摸屏控制，只需在触屏上设定氧浓度值，程序便会自动调节到氧浓度平衡并发出嘀的声音提示，免去了人工调节氧浓度的麻烦；
2.采用步进比例阀大大提高了流量的控制精度，采用闭环控制，测试当中氧浓度漂移程序自动调节回到目标值，大大提高了测试精度。
二、设计标准：
GB/T 2406.2 GB/T 2406 ASTM D 2863, ISO 4589-2, NES 714 GB/T 5454 GB/T 10707 GB/T 8924 GB/T 16581 NB/SH/T 0815-2010 TB/T 2919
IEC 61144 ISO 15705 ISO 4589-2
三、WJHC-5氧指数测定仪主要技术参数
1.采用高精度传感器，数字显示氧气浓度无需计算，精度更高更准确，范围0— 100%
2.数字分辨率：±0.1%
3.测量精度：0.1级
4.触摸屏设置程序自动调节氧浓度
5.一键校准精度
6.一键配比浓度
7.氧浓度稳定自动提示报警声
8.带有计时功能
9.可存储实验数据
10.可查询历史数据
11.可清除历史数据
12.可选择是否燃烧50mm
13.气源故障提示
14.氧传感器故障提示
15.氧气氮气错接提示
16.氧传感器老化提示
17.标准氧浓度输入
18.可设定燃烧筒直径(两种常用规格可选)
19.流量调节范围：0-20L/min（0-1200L/h）
20.石英玻璃筒：两种规格任选其一（内径≥75㎜ 或内径≥85㎜）
21.燃烧筒内气体流速：40mm±2mm/s
22.整机外形尺寸： 650mm×400×830mm
23.压力表精度2.5级，分辨率：0.01MPa
24.试验环境：环境温度：室温～40℃；， 相对湿度：≤70%；
25.输入压力：0.25-0.3MPa
26.工作压力：氮气0.15-0.20Mpa 氧气0.15-0.20Mpa
27.试样夹可用于软质和硬质塑料、各类建筑材料、纺织品、防火门等
28.丙烷（丁烷）点火系统，点火嘴为一根金属管制成，尾端有内径Φ2±1mm 的喷嘴，可自由弯曲。能插入燃烧筒内点燃试样，火焰长度： 16±4mm ， 大小5mm-60mm可自由调节，
29.气体：工业用氮气、氧气，纯度＞99%；（用户自备/正规气站工业氧气纯度一般为99.2%-99.3%之间）。
30.电源要求：AC220（+10% ）V、50HZ
31.最大使用功率：150W
32.自撑材料试样夹：能固定在燃烧筒轴心位置上、并能垂直夹住试样
33.非自撑材料试样夹：能将试样的两个垂直边同时固定在框架上( 选配/应用于纺织品等柔软不可自撑材料)
四、配置
Tips:氧指数测定仪试验时需用不小于98%的工业级氧气/氮气各一瓶作为气源，由于以上气体为高危运输品，无法作为氧指数测定仪的配件提供，只能在用户当地气站购买。（为保证气体的纯度请在当地正规气站进行购买）
以下为部分触摸屏控制界面：
Wjhc-5 intelligent full automatic touch screen controlled oxygen index tester
1、 Advantages of wjhc-5 intelligent automatic touch screen controlled oxygen index analyzer
1. Full color touch screen control, as long as the oxygen concentration value is set on the touch screen, the program will automatically adjust to the oxygen concentration balance and send out a beep sound prompt, avoiding the trouble of manually adjusting the oxygen concentration;
2. The step proportional valve is used to greatly improve the flow control accuracy. The closed-loop control is used to automatically adjust the oxygen concentration drift program back to the target value during the test, which greatly improves the test accuracy.
2、 Design criteria:
GB/T 2406.2 GB/T 2406 ASTM D 2863, ISO 4589-2, NES 714 GB/T 5454 GB/T 10707 GB/T 8924 GB/T 16581 NB/SH/T 0815-2010 TB/T 2919
IEC 61144 ISO 15705 ISO 4589-2
3、 Main technical parameters of wjhc-5 intelligent full automatic touch screen controlled oxygen index tester
1. With high precision sensor, the oxygen concentration can be displayed digitally without calculation, and the accuracy is higher and more accurate, with the range of 0-100%
2. Digital resolution: ± 0.1%
3. Measurement accuracy: 0.1 level
4. Touch screen setting program automatically adjusts oxygen concentration
5. One button calibration accuracy
6. One bond ratio concentration
7. Stable oxygen concentration, automatic alarm sound
8. With timing function
9. It can store experimental data
10. Historical data can be queried
11. Historical data can be cleared
12. It can choose whether to burn 50 mm or not
13. Air source failure prompt
14. Oxygen sensor fault prompt
15. Tips for wrong connection of oxygen and nitrogen
16. Oxygen sensor aging prompt
17. Standard oxygen concentration input
18. Diameter of combustion cylinder can be set (two common specifications are optional)
19. Flow regulation range: 0-20l / min (0-1200l / h)
20. Quartz glass cylinder: one of two specifications (inner diameter ≥ 75mm or inner diameter ≥ 85mm)
21. Gas velocity in combustion cylinder: 40mm ± 2mm / S
22. Overall dimension: 650mm × 400 × 830mm
23. Accuracy of pressure gauge is grade 2.5, resolution: 0.01Mpa
24. Test environment: ambient temperature: room temperature ~ 40 ℃; relative humidity: ≤ 70%;
25. Input pressure: 0.25-0.3mpa
26. Working pressure: nitrogen 0.15-0.20mpa, oxygen 0.15-0.20mpa
27. The sample holder can be used for soft and hard plastics, various building materials, textiles, fire doors, etc
28. Propane (butane) ignition system, the ignition nozzle is made of a metal tube, with a nozzle with inner diameter of Φ 2 ± 1 mm at the end, which can be bent freely. The flame length is 16 ± 4mm and the size is 5mm-60mm, which can be adjusted freely,
29. Gas: nitrogen and oxygen for industrial use, purity > 99%; (purity of industrial oxygen in user provided / regular gas station is generally between 99.2% and 99.3%).
30. Power requirements: AC220 (+ 10%) V, 50 Hz
31. Maximum power: 150W
32. Self supporting material sample clamp: it can be fixed on the axial position of combustion cylinder and can hold the sample vertically
33. Non self supporting material sample holder: it can fix two vertical sides of the sample on the frame at the same time (optional / applied to soft non self supporting materials such as textiles)
4、 Configuration
Tips: during the test of oxygen index tester, one bottle of industrial grade oxygen / nitrogen of no less than 98% is required as the gas source. As the above gases are high-risk transport products, they can not be provided as accessories of oxygen index analyzer, so they can only be purchased at the user's local gas station. (to ensure the purity of the gas, please purchase it at the local regular gas station)
The following are some touch screen control interfaces:
