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.
新型气路管道减少气路连接阀，使得漏气，断路故障更少。安徽LECO分析仪多少钱
氧氮氢分析仪的使用注意事项：
1 、氧氮氢分析仪在初次启用前，应该对连接点、焊点、阀门等进行检漏，以确保空气中的氧不会反渗进入管道及仪器内部，造成测量数值偏高。
2、再次使用仪器前，要进行管道系统净化，将漏入的空气除干净，同时确保连接取样管路时没有漏入空气。
3、样气中氧含量的变化会受管道材质及表面粗糙度影响，因此一般连接管路选用铜管或抛光过的不锈钢管，而不用塑料管、橡胶管等。
4、微量元素分析时，要避免各种管件、阀门、表头等死角对样气造成污染，因此必须尽可能的简化气路系统，连接件死角要小，以防止溶解氧逸出造成污染，使用水封、油封及腊封等设备，才能较好的确保数据的。
湖南美国LECO分析仪价格用户友好界面的Cornerstone™ 软件。
Determine the instrument blank.
a. Login a minimum of 3 Blank replicates.
b. Press the Analyze button on the instrument screen. After a short delay, the loading head slide-block will open.
c. Press the Analyze button on the instrument screen again, the loading head slide-block will close and the lower electrode will open.
d. Clean the upper and lower electrode manually, or, if applicable, remove thecrucible and press the analyze button to clean with the automatic cleaner.
e. Firmly place a graphite crucible on the lower electrode tip.
f. Press the Analyze button on the instrument screen, the lower electrode will close and the analysis sequence will start and endautomatically.
g. Repeat steps 2b through 2f a minimum of three times.
h. Set the blank following the procedure outlined in the operator's instruction manual.
仪器的亮点和优势：
特点和优势
·炉头区域LED照明系统
·炉头快速拆装的粉尘过滤装置
·装有自动旁路阀的可快速拆装氧水捕集装置
·**的动态流量补偿（DFC）保证热导池气体流量、压力恒定
高效脉冲炉冷却系统
·强力内循环水冷装置热交换效率
·双直流风扇保证持续冷却，不受电压波动的影响
·***电极炉头设计，提高脉冲炉
全自动分析系统（可选）
·自动清扫装置
·20位或100位全自动分析系统
·高效全自动真空除尘装置直接将粉尘排至仪器外部捕集器中，消除环境污染
改进的红外检测池技术
·***红外池的恒温绝热技术消除了外界环境温度的干扰
·长寿命的红外发射光源和无漂移的电路设计保证红外检测池的长期稳定性
·氧高低双量程采用3个碳红外检测器同时检测一氧化碳和二氧化碳，保证准确定量 工具条、滑动条和下拉式菜单简化了校正和数据处理的参数设定。
Oxygen, Nitrogen, and Hydrogen in Refractory Metals
Summary
One of the most critical chemical specifications of titanium alloys is the hydrogen content. Too high of a
hydrogen content can cause hydrides to precipitate, which can lead to embrittlement and subsequent
cracking when the alloy is stressed. Hydrogen pickup typically occurs during downstream processing steps
such as heat treating, pickling, and cleaning.
The LECO ONH836 is a simultaneous oxygen, nitrogen, and hydrogen determinator that utilizes an electrode furnace, inert carrier gas, and both infrared and thermal conductivity detection to meet the analytical needs of the refractory metal industry.
This application note was written specifically for use with the LECO ONH836 series determinator.
高级诊断程序包括全数字化的在线操作手册、维护模拟演示、图片说明等提供快速指导。安徽LECO分析仪多少钱
Procedure - Solid Samples
Press the Analyze button on the instrument screen again, the loading head slide-block will close and the lower electrode will open.
Clean the upper and lower electrode manually, or, if applicable, remove the crucible and press the analyze button to clean with the automatic cleaner
Add approximately 0.05 g of *** Graphite Powder to a *** Graphite Crucible.
Firmly place the crucible on the lower electrode tip or appropriate autoloader position.
Press the Analyze button on the instrument screen, the lower electrode will close and the analysis sequence will start and end automatically
