安徽專業(yè)元素分析儀

Sample Preparation

Typically, titanium and zirconium samples are chemically etched to remove surface contamination when oxygen and nitrogen are determined. However, etching can introduce hydrogen into the sample.

ASTM method E 1409 "Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by the Inert

Gas Fusion Technique", as updated in 1996, permits either etching or abrading (filing) of the test specimen.

ASTM E 1447 "Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal

Conductivity/Infrared Detection Method" permits surface preparation by abrading (if necessary to remove

contamination). Differences in sample preparation present somewhat of a dilemma regarding simultaneous

determination of O, N, and H in titanium. However, abrading samples with a file to remove surface

contamination will yield accurate O, N, and H results. The ONH836 utilizes a high-power electrode furnace to quickly and efficiently release the target gases from within the sample, which allows for a very rapid simultaneous determination of oxygen, nitrogen, and hydrogen.

氧氮?dú)浞治鰞x的常見故障及解決方法

供電正常、通訊正常，點(diǎn)擊確認(rèn)鍵后分析儀不工作。這是沒有水流，爐子溫度太高或儀器通道電壓不正常。如沒有水流，爐子溫度太高這些信息會(huì)顯示在顯示器畫面上，但沒有信息顯示說明這兩項(xiàng)正常。接下來檢查儀器通道零位電壓，如果比±3V高出1V以上，可能是因?yàn)闅馄靠樟?，或者是空氣進(jìn)入到分析儀中。檢查并更換化學(xué)試劑，如果有空氣進(jìn)入熱導(dǎo)池里，熱導(dǎo)池的電壓就會(huì)＜-6V，此時(shí)打開右面的門，堵住爐子氣體進(jìn)口，10s后，熱導(dǎo)池電壓值必然升高。經(jīng)過逐一排查，**終確認(rèn)堿石棉有問題，更換后儀器正常。 上海分析儀全自動(dòng)分析系統(tǒng)、打印機(jī)、天平、遠(yuǎn)程診斷。

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.

Instrument Highlights and Features

Optional Features

Optional boom-mounted touch-screen interface package (M) promotes an ergonomic workspace

Optional Performance Package (P) adds a three-stage carrier gas purification system, and a dual-loop gas dose module

Optional Dual Cooling Package (D) adds an integratedliquid-to-air radiator with dual cooling fans. This DC

option gives the user the choice of liquid-to-liquid cooling, liquid-to-air cooling, or a combination of both

Optional integrated autocleaner (H) automatically cleans the upper electrode and lower electrode tip

Optional 20-sample shuttle loader available

試樣加載過程中完全密閉，消除大氣的中可能帶來的雜質(zhì)的污染。

Instrument calibration/drift correction.

a. Login a minimum of 3 Standard replicates.

b. Weigh a ~1.000 gram of a calibration/drift standard, enter the mass and standard identification into appropriate replicate fields.

c. Press the Analyze button on the instrument screen. After a short delay, the loading head slide-block will open.

d. Place the calibration/drift standard into the open port at the top of the loading head.

e. Press the Analyze button on the instrument screen again, the loading head slide-block will close and the lower electrode will open.

穩(wěn)固的爐頭試樣加載結(jié)構(gòu)。新疆美國(guó)LECO分析儀咨詢報(bào)價(jià)

上海禹重給您提供各種氧氮?dú)浞治鰞x，歡迎來電咨詢！安徽專業(yè)元素分析儀

氧氮?dú)浞治鰞x的操作過程

氧氮?dú)浞治鰞x可根據(jù)的用戶的要求定制。該分析儀配備兩個(gè)不同靈敏度的探測(cè)器，在更多的應(yīng)用中保證了準(zhǔn)確度。

操作簡(jiǎn)單而且安全。在樣品稱重以后，樣品的重量數(shù)據(jù)通過電子界面?zhèn)鲗?dǎo)至相連的電腦中，也可以在軟件界面中手動(dòng)輸入樣品的重量。

樣品被放置在水平放置的爐子中的低溫區(qū)域。分析開始以后，爐子開始向上轉(zhuǎn)動(dòng)，然后樣品逐漸落入加熱區(qū)。通過添加載體氣體氮?dú)猓瑲錃獗粩U(kuò)散出來并且隨載體被傳導(dǎo)至一個(gè)高靈敏度的熱傳導(dǎo)測(cè)量池。

通常一次測(cè)量的時(shí)間在3到15分鐘之間。在分析的過程中設(shè)備可以顯示測(cè)試信號(hào)和設(shè)備的參數(shù)，從信號(hào)的評(píng)估到結(jié)果在界面上的顯示全部自動(dòng)完成；而測(cè)量數(shù)據(jù)則被傳導(dǎo)至LIMS（實(shí)驗(yàn)室信息管理系統(tǒng)）中。無需過多的保養(yǎng)和維護(hù)，而除塵器和凈化管的維護(hù)工作也方便。