浙江美国LECO氧氮氢分析仪厂家直销

Procedure – Powder/Chip Samples

Instrument calibration/drift correction.

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

Place the Nickel Capsule containing the sample into the open port at the top of the loading head.

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 either manually or remove the crucible and press the analyze button to clean with an automatic cleaner if applicable.

美国LECO力可氧氮氢分析仪ONH836（氧氮氢联测仪）系列硬件部分

特点和优势

1、炉头区域LED照明系统

2、炉头快速拆装的粉尘过滤装置

3、装有自动旁路阀的可快速拆装氧水捕集装置

4、**的动态流量补偿（DFC）保证热导池气体流量、压力恒定

5、改进的红外检测池技术

     新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

   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

  6、高效脉冲炉冷却系统

   强力内循环水冷装置

   双直流风扇保证持续冷却，不受电压波动的影响

   新电极炉头设计，提高脉冲炉热交换效率

  7、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

   高速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

浙江美国LECO氧氮氢分析仪厂家直销提供各种无机材料、钢铁、有色金属、硬质合金陶瓷材料中宽范围的氧氮氢同时测定。

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.

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.

试样加载过程中完全密闭，消除大气的中可能带来的杂质的污染。

Instrument Highlights and Features

Features and Benefits

LED light ring illuminates the furnace area

Choice of either argon or helium carrier gas

Novel electrode design increases heat transfer efficiency for increased stability

Non-touch interface systems are also available

User-friendly brand software

High-Performance Detector Design

Thermostatic construction provides increased protection from ambient temperature fluctuations

Optimized emitter control and detection circuitryimproves the IR cell lifetime and long-term stability,

resulting in superior accuracy and precision

Infrared detection for the determination of oxygen, thermoconductivity detection for the determination

of nitrogen

**的动态流量补偿（DFC）保证热导池气体流量、压力恒定。江苏美国分析仪价格

高速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。浙江美国LECO氧氮氢分析仪厂家直销

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

浙江美国LECO氧氮氢分析仪厂家直销