氧氮?dú)浞治鰞x是快速、準(zhǔn)確分析氧、氮、氫元素的、高性能儀器,整機(jī)采用模塊化、一體化設(shè)計(jì),即主機(jī)由可靠的脈沖電極爐、高靈敏高精度的檢測系統(tǒng)、布局合理和氣密性好的氣路系統(tǒng)、可靠耐用的電源系統(tǒng)、穩(wěn)定的電路系統(tǒng)、高校節(jié)能的水循環(huán)散熱系統(tǒng)等六個(gè)**的硬件模塊單元組成。
氧氮?dú)浞治鰞x的測量原理:
測量范圍非常***。分析樣品時(shí),樣品被稱重后放到樣品端口中,然后用載氣進(jìn)行沖洗,防止大氣(含氧氣和氮?dú)猓┻M(jìn)入到爐子系統(tǒng)中。
石墨坩堝在脈沖爐中脫氣,以盡量減少自帶的污染。經(jīng)過穩(wěn)定階段后樣品落入坩堝中并熔融。樣品中的氧與石墨坩堝中的碳反應(yīng)生成一氧化碳。氮和氫以單質(zhì)的形式釋放。載氣和樣品氣體通過粉塵過濾網(wǎng)后再進(jìn)入到氧化銅催化爐中,將一氧化碳氧化成二氧化碳。
二氧化碳進(jìn)入到紅外池中用于測定氧含量,被測后的氣體導(dǎo)入化學(xué)試劑管,這時(shí)二氧化碳和水被化學(xué)試劑除去,氮元素通過熱導(dǎo)檢測池含量被測定。測量氫時(shí),載氣換為氮?dú)?,樣品氣體通過舒茨試劑而不是氧化銅催化劑。測氧和氮時(shí)也可采用更廉價(jià)的氬氣作為載氣。 可選具有壓力補(bǔ)償和溫度控制性能的標(biāo)氣檢測氣路。湖南美國LECO分析儀哪家好
736 Series: Oxygen/Nitrogen by Inert Gas Fusion
The 736 family of Elemental Analyzers is designed for routine measurement of oxygen and nitrogen content of
inorganic materials, ferrous and nonferrous alloys, andrefractory materials using the inert gas fusion technique.
These instruments feature our Cornerstone brand ® software, a custom interface designed specifically for
touch-screen operation. Developed by combining longterm research with customer feedback, this easy-to-use
software gives you complete access to instrument control, analysis settings, diagnostics, reporting, and more—without sacrificing valuable bench space.
山東LECO分析儀廠家直銷全自動(dòng)分析系統(tǒng)、打印機(jī)、天平、遠(yuǎn)程診斷。
Method Selection
Two methods are described in this application note; either method can be used to analyze iron, steel, nickel-, and cobalt-base alloys. The Precision Method is recommended for general use and will provide the best precision and accuracy throughout the typical O, N, and H concentrations found in this group of metals; approximate cycle time is 3.5 minutes. The Fast Track method can be used where speed of analysis is a critical component; for example, when molten metal is being sampled and results are required in the shortest possible time. This method will produce suitable results for most samples; approximate cycle time is 2.25 minutes. As noted above, sampling and sample preparation are key elements to accurate O, N, and Hdetermination as well. It is up to the user to determine which method best meets their needs.
氧氮?dú)浞治鰞x的使用注意事項(xiàng):
1 、氧氮?dú)浞治鰞x在初次啟用前,應(yīng)該對連接點(diǎn)、焊點(diǎn)、閥門等進(jìn)行檢漏,以確??諝庵械难醪粫礉B進(jìn)入管道及儀器內(nèi)部,造成測量數(shù)值偏高。
2、再次使用儀器前,要進(jìn)行管道系統(tǒng)凈化,將漏入的空氣除干凈,同時(shí)確保連接取樣管路時(shí)沒有漏入空氣。
3、樣氣中氧含量的變化會受管道材質(zhì)及表面粗糙度影響,因此一般連接管路選用銅管或拋光過的不銹鋼管,而不用塑料管、橡膠管等。
4、微量元素分析時(shí),要避免各種管件、閥門、表頭等死角對樣氣造成污染,因此必須盡可能的簡化氣路系統(tǒng),連接件死角要小,以防止溶解氧逸出造成污染,使用水封、油封及臘封等設(shè)備,才能較好的確保數(shù)據(jù)的。
氧氮?dú)浞治鰞x怎么選?歡迎聯(lián)系上海禹重科技,我司產(chǎn)品質(zhì)量保證,歡迎咨詢!
氧氮?dú)浞治鰞x的優(yōu)點(diǎn)
采用惰氣熔融技術(shù),同時(shí)測定氧、氮和氫元素含量
新設(shè)計(jì)封閉氣路系統(tǒng),優(yōu)化氣路循環(huán),使氧氮?dú)錅y量更準(zhǔn)確
可采用更廉價(jià)的氬氣作為載氣
催化爐溫度可調(diào),使氧的測量更加準(zhǔn)確
氣路系統(tǒng)都采用電磁閥控制,新增分段式漏氣檢測
水冷樣品加樣端口,有效隔絕雜質(zhì)氣體侵入
儀器配置和氧、氮、氫測量范圍可靈活選擇
新設(shè)計(jì)的高靈敏度紅外檢測池和熱導(dǎo)池,有極低的檢出限
分析時(shí)間短
脈沖爐功率高達(dá)8.5kw,溫度3000℃
顆粒狀樣品無需膠囊包裹,使用經(jīng)濟(jì)實(shí)惠
化學(xué)試劑及管路隱藏在門后(可移除)
強(qiáng)大的分析軟件(支持?jǐn)?shù)據(jù)和應(yīng)用報(bào)告導(dǎo)出、增加評論區(qū)及其他更多功能)。
單點(diǎn)和多點(diǎn)校正(線性回歸)
可采用自來水、冷卻循環(huán)水機(jī)或交換機(jī)冷卻
新設(shè)計(jì)的產(chǎn)品可用于各類生產(chǎn)控制和實(shí)驗(yàn)室。
高級診斷程序包括全數(shù)字化的在線操作手冊、維護(hù)模擬演示、圖片說明等提供快速指導(dǎo)。湖南美國LECO分析儀哪家好
Procedure – Powder/Chip Samples
Determine the instrument blank.
Press the Analyze button on the instrument screen, the lower electrode will close and the analysis sequence will start and end automatically.
Repeat steps 2b through 2g a minimum of three times.
Set the blank following the procedure outlined in the operator's instruction manual.
Instrument calibration/drift correction.
Login a minimum of three Standard reps.
Weigh approximately *** grams of a calibration/drift standard into a *** Nickel Capsule; enter the mass and standard identification into appropriate rep fields. If applicable, place the nickel capsule in the appropriate autoloader position.
湖南美國LECO分析儀哪家好