广东美国LECO氧氮氢分析仪厂家报价

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.

Note: LECO Reference Materia***o not require preparation. See preparation statement on the reference material certificate. Solid Standards may be used to calibrate when chip or powder standards are not available.

***触摸屏技术，用户友好界面软件进行校正、分析、诊断等。广东美国LECO氧氮氢分析仪厂家报价

Procedure - Solid Samples

Instrument calibration/drift correction.

Place the calibration/drift standard in a *** Nickel Basket, and if applicable, place the sample into the appropriate autoloader position.

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

Note: samples using automation should be placed in the appropriate autoloader position before starting the

analysis sequence. Once the sequence has started, the automatic analysis will start and end automatically.

北京美国LECO分析仪采购Cornerstone氧氮氢分析软件同时支持***的数据文档格式和可变的报告格式。

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

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

强力内循环水冷装置。

Sample Preparation

Sampling and sample preparation of refractory metals such as titanium and zirconium is somewhat different from that of steel. Unlike steel samples, hydrogen is not as mobile in this group of materials; therefore, storage in liquid nitrogen or dry ice is not required. However, it is important to keep the sample cool when cutting or sectioning. Sample preparation for oxygen and nitrogen determination has beendifferent from that of hydrogen determination.

***红外池的恒温绝热技术消除了外界环境温度的干扰。上海美国分析仪采购

***电极炉头设计，提高脉冲炉热交换效率。广东美国LECO氧氮氢分析仪厂家报价

Sample Preparation

Sampling and sample preparation is an important issue because traditional methods used to obtain samples for oxygen and nitrogen determination are different from those recommended for hydrogen, especially when sampling molten metal. The main difference in steel sampling procedures for oxygen/nitrogen and hydrogen is due to the mobilityof hydrogen. Special precautions must be used when sampling for hydrogen. From molten steel and iron, a sample must be quickly quenched in cold water and chilled in a refrigerant such as liquefied nitrogen or a mixture of acetone and solid carbon dioxide in order to reduce losses of hydrogen from diffusion. Losses of oxygen and nitrogen from diffusion are not a problem. A sample that is taken for hydrogen and

chilled in a refrigerant can also be used for oxygen and nitrogen determination. However, a sample that is typically taken for oxygen and/or nitrogen determination is not suitable for hydrogen determination due to hydrogen loss (diffusion). Surface contamination must be removed by filing or light grinding, using care not to overheat the sample.

广东美国LECO氧氮氢分析仪厂家报价