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.

氧氮氫分析儀的常見故障及解決方法

供電正常、通訊正常，點擊確認鍵后分析儀不工作。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顯示在顯示器畫面上，但沒有信息顯示說明這兩項正常。接下來檢查儀器通道零位電壓，如果比±3V高出1V以上，可能是因為氣瓶空了，或者是空氣進入到分析儀中。檢查并更換化學試劑，如果有空氣進入熱導池里，熱導池的電壓就會＜-6V，此時打開右面的門，堵住爐子氣體進口，10s后，熱導池電壓值必然升高。經過逐一排查，**終確認堿石棉有問題，更換后儀器正常。 上海分析儀全自動分析系統、打印機、天平、遠程診斷。

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.

穩固的爐頭試樣加載結構。新疆美國LECO分析儀咨詢報價

上海禹重給您提供各種氧氮氫分析儀，歡迎來電咨詢！安徽專業元素分析儀

氧氮氫分析儀的操作過程

氧氮氫分析儀可根據的用戶的要求定制。該分析儀配備兩個不同靈敏度的探測器，在更多的應用中保證了準確度。

操作簡單而且安全。在樣品稱重以后，樣品的重量數據通過電子界面傳導至相連的電腦中，也可以在軟件界面中手動輸入樣品的重量。

樣品被放置在水平放置的爐子中的低溫區域。分析開始以后，爐子開始向上轉動，然后樣品逐漸落入加熱區。通過添加載體氣體氮氣，氫氣被擴散出來并且隨載體被傳導至一個高靈敏度的熱傳導測量池。

通常一次測量的時間在3到15分鐘之間。在分析的過程中設備可以顯示測試信號和設備的參數，從信號的評估到結果在界面上的顯示全部自動完成；而測量數據則被傳導至LIMS（實驗室信息管理系統）中。無需過多的保養和維護，而除塵器和凈化管的維護工作也方便。