YZS數顯氧指數測定儀是檢測儀器，用于均質材料、層壓材料、泡沫材料、軟片和薄膜材料，在常溫常壓下，氧、氮混合氣體中調節剛好維持試樣燃燒的氧濃度。本機采用電機及調速系統一體化結構驅動減速機，經減速后帶動絲杠進行加載。電氣部分包括試驗力測量系統和變形測量系統。并具有過載保護、位移控制等功能。設計簡單，使用方便，性能穩定安全。

The oxygen index analyzer is a testing instrument for homogeneous materials, laminated materials, foam materials, films and film materials. At normal temperature and pressure, the oxygen and nitrogen mixtures are adjusted to just maintain the oxygen concentration of the sample. This machine adopts the integrated structure of motor and speed control system to drive the reducer, and after the deceleration, the lead screw is loaded for loading. The electrical part includes a test force measurement system and a deformation measurement system. And has overload protection, displacement control and other functions. Simple design, easy to use, stable and safe performance.

YZS數顯氧指數測定儀符合標準：

依據《EN ISO 4589-2:2006-06室溫氧指數測試》及《GBT 2406-1993 塑料燃燒性能試驗方法 氧指數法》《GBT 8924-2005 纖維增強塑料燃燒性能試驗方法氧指數法等要求生產。

The oxygen index analyzer meets the standards:

It is produced according to the requirements of "EN ISO 4589-2: 2006-06 Room Temperature Oxygen Index Test" and "GBT 2406-1993 Test Method for Burning Performance of Plastics.

YZS數顯氧指數測定儀技術參數：

★測量范圍：0-A、/02

★分辨率：0.1%、/02

★測量精度：(±0.4%)、/02

★響應時間：

★數顯精度：0.1%±1個字

★輸出漂移：<5%/年

★秒表：精度0.5s

★外形尺寸約：360×250×530mm

★保修期：發貨后12個月

★儀器的工作條件：

★環境溫度：-10℃-40℃

★相對濕度： ≤85%

★使用氣體：GB3863工業用氣態氧；GB3864工業用氣態氮；兩瓶氣體均要調壓器（用戶自配）

★輸入壓力：(0.25-0.4) Mpa

★工作壓力：O.lMpa

Technical parameters of oxygen index analyzer:

★ Measuring range: 0-A, / 02

★ Resolution: 0.1%, / 02

★ Measurement accuracy: (± 0.4%), / 02

★ Response time:

★ Digital display accuracy: 0.1% ± 1 character

★ Output drift: <5% / year

★ Stopwatch: 0.5s accuracy

★ Approximate dimensions: 360 × 250 × 530mm

★ Warranty period: 12 months after delivery

★ Working conditions of the instrument:

★ Ambient temperature: -10 ℃ -40 ℃

★ Relative humidity: ≤85%

★ Gas used: GB3863 industrial gaseous oxygen; GB3864 industrial gaseous nitrogen; both bottles of gas need pressure regulator (user-supplied)

★ Input pressure: (0.25-0.4) Mpa

★ Working pressure: O.lMpa

YZS數顯氧指數測定儀操作方法：

★檢查氣路，確定各部分連接無誤，無漏氣現象。

★確定實驗開始時的氧濃度：根據經驗或試樣在空氣中點燃的情況，估計開始實驗時的氧濃度。如試樣在空氣中迅速燃燒，則開始實驗時的氧濃度為18%左右；如在空氣中緩慢燃燒或時斷時續，則為21%左右；在空氣中離開點火源即馬上熄滅，則至少為25%。根據經驗，確定該地板革氧指數測定實驗初始氧濃度為26%。氧濃度確定后，在混合氣體的總流量為10l/min的條件下，便可確定氧氣、氮氣的流量。例如，若氧濃度為26%，則氧氣、氮氣的流量分別為2.5l/min和7.5l/min。

★安裝試樣：將試樣夾在夾具上，垂直地安裝在燃燒筒的**位置上（注意要劃50mm標線），保證試樣頂端低于燃燒筒頂端至少100mm，罩上燃燒筒（注意燃燒筒要輕拿輕放）。

★通氣并調節流量：開啟氧、氮氣鋼瓶閥門，調節減壓閥壓力為0.2～0.3MPa（由教員完成），然后開啟氮氣和氧氣管道閥門(在儀器后面標注有紅線的管路為氧氣，另一路則為氮氣,應注意：先開氮氣，后開氧氣，且閥門不宜開得過大),然后調節穩壓閥，儀器壓力表指示壓力為0.1±0.01MPa，并保持該壓力（禁止使用過高氣壓）。調節流量調節閥，通過轉子流量計讀取數據（應讀取浮子上沿所對應的刻度），得到穩定流速的氧、氮氣流。應注意：在調節氧氣、氮氣濃度后，必須用調節好流量的氧氮混合氣流沖洗燃燒筒至少30s（排出燃燒筒內的空氣）。

★點燃試樣：用點火器從試樣的頂部中間點燃，勿使火焰碰到試樣的棱邊和側表面。在確認試樣頂端全部著火后，立即移去點火器，開始計時或觀察試樣燒掉的長度。點燃試樣時，火焰作用的時間A長為30s，若在30s內不能點燃，則應增大氧濃度，繼續點燃，直至30s內點燃為止。

★確定臨界氧濃度的大致范圍：點燃試樣后，立即開始記時，觀察試樣的燃燒長度及燃燒行為。若燃燒終止，但在1s內又自發再燃，則繼續觀察和記時。如果試樣的燃燒時間超過3min，或燃燒長度超過50mm（滿足其中之一），說明氧的濃度太高，必須降低，此時記錄實驗現象記“×”，如試樣燃燒在3min和50mm之前熄滅，說明氧的濃度太低，需提高氧濃度，此時記錄實驗現象記“Ο”。如此在氧的體積百分濃度的整數位上尋找這樣相鄰的四個點，要求這四個點處的燃燒現象為“ΟΟ××”。例如若氧濃度為26%時，燒過50mm的刻度線，則氧過量，記為“×”，下一步調低氧濃度，在25%做**次，判斷是否為氧過量，直到找到相鄰的四個點為氧不足、氧不足、氧過量、氧過量，此范圍即為所確定的臨界氧濃度的大致范圍。

★在上述測試范圍內，縮小步長，從低到高，氧濃度每升高0.4%重復一次以上測試，觀察現象，并記錄。

★根據上述測試結果確定氧指數OI。

Operation method of oxygen index analyzer:

★ Check the gas path to make sure that all parts are connected correctly and there is no air leakage.

★ Determine the oxygen concentration at the beginning of the experiment: Based on experience or the ignition of the sample in the air, estimate the oxygen concentration at the beginning of the experiment. If the sample burns rapidly in the air, the oxygen concentration at the beginning of the experiment is about 18%; if it burns slowly or intermittently in the air, it is about 21%; when it leaves the ignition source in the air and immediately goes out, At least 25%. According to experience, it is determined that the initial oxygen concentration of the floor leather oxygen index measurement experiment is 26%. After the oxygen concentration is determined, the flow rate of oxygen and nitrogen can be determined under the condition that the total flow rate of the mixed gas is 10 l / min. For example, if the oxygen concentration is 26%, the flow rates of oxygen and nitrogen are 2.5 l / min and 7.5 l / min, respectively.

★ Install the sample: Clamp the sample on the fixture and install it vertically on the ** position of the combustion cylinder (note the 50mm mark) to ensure that the top of the sample is at least 100mm lower than the top of the combustion cylinder. Note that the burner should be handled gently.

Ventilation and flow adjustment: Open the oxygen and nitrogen cylinder valves, adjust the pressure reducing valve pressure to 0.2 to 0.3 MPa (completed by the instructor), and then open the nitrogen and oxygen pipeline valves (the pipeline marked with a red line on the back of the instrument is oxygen, and the other The other way is nitrogen, it should be noted that: first open nitrogen, then open oxygen, and the valve should not be opened too large), and then adjust the pressure regulator valve, the instrument pressure gauge indicates that the pressure is 0.1 ± 0.01MPa, and maintain this pressure (prohibited use High pressure). Adjust the flow control valve and read the data through the rotor flowmeter (the corresponding scale on the upper edge of the float should be read) to obtain a stable flow of oxygen and nitrogen. It should be noted that after adjusting the concentration of oxygen and nitrogen, the combustion cylinder must be flushed with the adjusted flow of oxygen-nitrogen mixed gas for at least 30s (exhaust the air in the combustion cylinder).

★ Ignite the sample: Use an igniter to ignite from the middle of the top of the sample. Do not let the flame hit the edges and side surfaces of the sample. After confirming that the top of the sample is on fire, remove the igniter immediately and start timing or observe the length of the sample burned out. When the sample is ignited, the flame action time A is 30s. If it cannot be ignited within 30s, increase the oxygen concentration and continue to ignite until it ignites within 30s.

★ Determine the approximate range of critical oxygen concentration: immediately after igniting the sample, start timing and observe the burning length and burning behavior of the sample. If the combustion is terminated, but spontaneously re-ignites within 1 s, continue observation and timing. If the burning time of the sample exceeds 3min, or the burning length exceeds 50mm (one of them is satisfied), it means that the oxygen concentration is too high and must be reduced. At this time, record the experimental phenomenon and record “×”. For example, if the sample burns before 3min and 50mm When it is off, it means that the oxygen concentration is too low, and the oxygen concentration needs to be increased. At this time, the experimental phenomenon "0" is recorded. In this way, looking for such four adjacent points on the integer digits of the volume percentage concentration of oxygen, it is required that the combustion phenomenon at these four points is “0 ××”. For example, if the oxygen concentration is 26% and the 50mm mark is burned, the excess oxygen will be marked as “×”. Next, adjust the oxygen concentration to 25% and do it ** times to determine whether it is oxygen excess until the phase is found. The four adjacent points are oxygen deficiency, oxygen deficiency, oxygen excess, and oxygen excess, and this range is the approximate range of the determined critical oxygen concentration.

★ In the above test range, reduce the step size, from low to high, repeat the test more than once for every 0.4% increase in oxygen concentration, observe the phenomenon, and record.

★ Determine the oxygen index OI based on the above test results.

YZS數顯氧指數測定儀注意事項：

★本設備是試驗測試設備請不要將本設備用于規定試驗及料以外的目的。

試樣制作要精細、準確，表面平整、光滑。

氧、氮氣流量調節要得當，壓力表指示處于正常位置，禁止使用過高氣壓，以防損壞設備。

流量計、玻璃筒為易碎品，實驗中謹防打碎。

★請完善安裝環境

請置于室溫下。濕度低的場所。（80%以下無結露）灰塵和塵埃少的場所。

★請按要求安裝試驗材料

按要求安裝試驗材料，否則可能出現A預期故障。

★進行配線和維護作業時，請務必關閉電源

為了防止在作業過程中機器失去控制而導致事故和觸電，請在進行作業前，務必先關閉電源。

★電源

關于本設備的電源，請注意以下事項。

原則上配電方式采用單相220V電源。

關于電源及電源工程，請與電氣工程人員或有同等知識的人士商量。

★電源線

請務必使用隨設備提供的電源線。發現電源線和電源插頭有異常情況時，請與本公司聯系。同我公司服務人員進行更換或指導更換。

★保險絲

為了防止火災和內部電路的破損等，請不要用規定以外的保險絲。更換保險絲時，請使用與原設備相同型號和形狀的保險絲。

★特別警告

警告應注意所執行的應用、或條件均具有很高的危險性，可能導致人員受傷或甚至死亡。

為了防止意外傷害或死亡發生，在搬移和使用設備時，請務必先觀察清楚，然后再進行動作。

Note of oxygen index analyzer:

★ This equipment is a test equipment. Please do not use this equipment for purposes other than specified tests and materials.

The preparation of the sample should be fine and accurate, and the surface should be smooth and smooth.

The flow of oxygen and nitrogen must be properly adjusted. The pressure gauge indicates that it is in the normal position. It is forbidden to use excessively high pressure to prevent damage to the equipment.

The flowmeter and glass tube are fragile, so be careful not to break them during the experiment.

★ Please perfect the installation environment

Please leave it at room temperature. Places with low humidity. (No condensation below 80%) Place with little dust and dust.

★ Please install test materials as required

Install the test materials as required, otherwise A expected failure may occur.

★ Be sure to turn off the power when performing wiring and maintenance work

In order to prevent accidents and electric shock caused by the machine losing control during the work, please turn off the power before working.

★ Power

Regarding the power of this device, please note the following.

In principle, a single-phase 220V power supply is used for power distribution.

For power supply and power supply engineering, please consult with electrical engineering personnel or persons with equivalent knowledge.

★ Power cord

Be sure to use the power cord provided with the device. If you find anything abnormal with the power cord and plug, please contact us. Replace or instruct the replacement with our service personnel.

★ Fuse

To prevent fire, damage to internal circuits, etc., do not use fuses other than those specified. When replacing fuses, use fuses of the same type and shape as the original equipment.

★ Special warning

WARNING It should be noted that the application or condition being performed is highly dangerous and could result in injury or even death.

To prevent accidental injury or death, be sure to observe clearly when moving and using the equipment before moving.

YZS數顯氧指數測定儀裝箱清單：

★主機：1臺

★玻璃管：2根

★玻璃珠：1斤（放入燃燒柱內）

★尼龍管：1.2米f連接燃燒柱與主機）

★密封圈：若干

★試樣夾：l套

★金屬網：1個（放入燃燒柱內）

★板手10-12：1把

★橡皮管：2根

★Ml0×1內接頭螺釘：1顆（接燃燒柱內）

★Ml0×1接頭螺母：l顆（接主機）

★說明書：1份

★合格證：1張

★GB/T2406標準：1份

Packing list of oxygen index analyzer

★ Host: 1

★ Glass tube: 2

★ Glass Beads: 1 kg (into the combustion column)

★ Nylon tube: 1.2m f connecting the combustion column and the host)

★ Seal ring: several

★ Sample holder: l set

★ Metal mesh: 1 (inside the combustion column)

★ Wrench 10-12: 1

★ rubber tube: 2

★ Ml0 × 1 inner joint screw: 1 (inside the combustion column)

★ Ml0 × 1 connector nut: 1 pc (connect to the host)

★ Instruction: 1 copy

★ Certificate of Conformity: 1

★ GB / T2406 standard: 1 copy