WJHC-5氧指數(shù)測(cè)定儀
氧指數(shù)測(cè)定儀符合塑料燃燒性能試驗(yàn)方法氧指數(shù)法GB/T2406-2008和紡織品燃燒性能試驗(yàn)氧指數(shù)法GB/T5454等標(biāo)準(zhǔn)國(guó)家標(biāo)準(zhǔn)，用于評(píng)定聚合物在規(guī)定試驗(yàn)條件下的燃燒性能，即測(cè)定聚合物剛好維持燃燒的氧的體積百分比濃度。適用于塑料、橡膠、纖維、泡沫塑料、軟片和薄膜及紡織等材料的燃燒性能測(cè)定。
數(shù)顯氧指數(shù)測(cè)定儀是一種測(cè)定聚合物燃燒性準(zhǔn)確、重現(xiàn)性好、方便快捷的檢測(cè)儀器。本儀器不僅可以作為鑒定聚合物難燃性的手段，還可以作為一種研究?jī)x器。
一、WJHC-5氧指數(shù)測(cè)定儀產(chǎn)品優(yōu)勢(shì)：
1.全彩觸摸屏控制，只需在觸屏上設(shè)定氧濃度值，程序便會(huì)自動(dòng)調(diào)節(jié)到氧濃度平衡并發(fā)出嘀的聲音提示，免去了人工調(diào)節(jié)氧濃度的麻煩；
2.采用步進(jìn)比例閥大大提高了流量的控制精度，采用閉環(huán)控制，測(cè)試當(dāng)中氧濃度漂移程序自動(dòng)調(diào)節(jié)回到目標(biāo)值，大大提高了測(cè)試精度。
二、設(shè)計(jì)標(biāo)準(zhǔn)：
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氧指數(shù)測(cè)定儀主要技術(shù)參數(shù)
1.采用高精度傳感器，數(shù)字顯示氧氣濃度無(wú)需計(jì)算，精度更高更準(zhǔn)確，范圍0— 99%
2.數(shù)字分辨率：±0.1%
3.測(cè)量精度：0.1級(jí)
4.觸摸屏設(shè)置程序自動(dòng)調(diào)節(jié)氧濃度
5.一鍵校準(zhǔn)精度
6.一鍵配比濃度
7.氧濃度穩(wěn)定自動(dòng)提示報(bào)警聲
8.帶有計(jì)時(shí)功能
9.可存儲(chǔ)實(shí)驗(yàn)數(shù)據(jù)
10.可查詢歷史數(shù)據(jù)
11.可清除歷史數(shù)據(jù)
12.可選擇是否燃燒50mm
13.氣源故障提示
14.氧傳感器故障提示
15.氧氣氮?dú)忮e(cuò)接提示
16.氧傳感器老化提示
17.標(biāo)準(zhǔn)氧濃度輸入
18.可設(shè)定燃燒筒直徑(兩種常用規(guī)格可選)
19.流量調(diào)節(jié)范圍：0-20L/min（0-1200L/h）
20.石英玻璃筒：兩種規(guī)格任選其一（內(nèi)徑≥75㎜ 或內(nèi)徑≥85㎜）
21.燃燒筒內(nèi)氣體流速：40mm±2mm/s
22.整機(jī)外形尺寸： 650mm×400×830mm
23.壓力表精度2.5級(jí)，分辨率：0.01MPa
24.試驗(yàn)環(huán)境：環(huán)境溫度：室溫～40℃；， 相對(duì)濕度：≤70%；
25.輸入壓力：0.25-0.3MPa
26.工作壓力：氮?dú)?.15-0.20Mpa 氧氣0.15-0.20Mpa
27.試樣夾可用于軟質(zhì)和硬質(zhì)塑料、各類建筑材料、紡織品、防火門等
28.丙烷（丁烷）點(diǎn)火系統(tǒng)，點(diǎn)火嘴為一根金屬管制成，尾端有內(nèi)徑Φ2±1mm 的噴嘴，可自由彎曲。能插入燃燒筒內(nèi)點(diǎn)燃試樣，火焰長(zhǎng)度： 16±4mm ， 大小5mm-60mm可自由調(diào)節(jié)，
29.氣體：工業(yè)用氮?dú)?、氧氣，純度?9%；（用戶自備/正規(guī)氣站工業(yè)氧氣純度一般為99.2%-99.3%之間）。
30.電源要求：AC220（+10% ）V、50HZ
31.使用功率：150W
32.自撐材料試樣夾：能固定在燃燒筒軸心位置上、并能垂直夾住試樣
33.非自撐材料試樣夾：能將試樣的兩個(gè)垂直邊同時(shí)固定在框架上( 選配/應(yīng)用于紡織品等柔軟不可自撐材料)
四、配置
Tips:氧指數(shù)測(cè)定儀試驗(yàn)時(shí)需用不小于98%的工業(yè)級(jí)氧氣/氮?dú)飧饕黄孔鳛闅庠?，由于以上氣體為高危運(yùn)輸品，無(wú)法作為氧指數(shù)測(cè)定儀的配件提供，只能在用戶當(dāng)?shù)貧庹举?gòu)買。（為保證氣體的純度請(qǐng)?jiān)诋?dāng)?shù)卣?guī)氣站進(jìn)行購(gòu)買）
以下為部分觸摸屏控制界面：
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 0-99%
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:
