广东LECO氧氮氢分析仪

LECO—Your source for total analytical solutions

CS CS 844 and 744 Series: Carbon/Sulfur by Combustion

Carbon and sulfur determination by combustion infrared detection

Quick, accurate, and affordable determination for both production control and research

Calibration, analysis, evaluation, and diagnostic functions accessible via user-friendly brand software

GDS GDS 500A and 850A Atomic Emission Spectrometers

Spectral range from 120 to 800 nm

Continuous profile of concentration/thickness

Large, dynamic range with concentrations from ppm to 100% by weight

Short analysis time (minutes)

Cornerstone氧氮氧分析软件允许用户在单一分析界面中完成日常的所有工作，快速而且简单易用。广东LECO氧氮氢分析仪

Instrument calibration/drift correction

f. Clean the upper and lower electrode manually, or, if applicable, remove the crucible and press the analyze button to clean with the automatic cleaner.

g. Firmly place a graphite crucible on the lower electrode tip.

h. Press the Analyze button on the instrument screen, the lower electrode will close and the analysis sequence will start and end automatically.

i. Repeat steps 3b through 3h a minimum of three times for each calibration/drift standard used.

. Calibrate/drift following the procedure outlined in the operator's instruction manual.

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 OHN836系列仪器采用惰性熔融法。

氧氮氢分析仪是快速、准确分析氧、氮、氢元素的、高性能仪器，整机采用模块化、一体化设计，即主机由可靠的脉冲电极炉、高灵敏高精度的检测系统、布局合理和气密性好的气路系统、可靠耐用的电源系统、稳定的电路系统、高校节能的水循环散热系统等六个**的硬件模块单元组成。

氧氮氢分析仪的测量原理：

测量范围非常***。分析样品时，样品被称重后放到样品端口中，然后用载气进行冲洗，防止大气（含氧气和氮气）进入到炉子系统中。

石墨坩埚在脉冲炉中脱气，以尽量减少自带的污染。经过稳定阶段后样品落入坩埚中并熔融。样品中的氧与石墨坩埚中的碳反应生成一氧化碳。氮和氢以单质的形式释放。载气和样品气体通过粉尘过滤网后再进入到氧化铜催化炉中，将一氧化碳氧化成二氧化碳。

二氧化碳进入到红外池中用于测定氧含量，被测后的气体导入化学试剂管，这时二氧化碳和水被化学试剂除去，氮元素通过热导检测池含量被测定。测量氢时，载气换为氮气，样品气体通过舒茨试剂而不是氧化铜催化剂。测氧和氮时也可采用更廉价的氩气作为载气。 全自动分析系统（可选） 。湖南专业元素分析仪厂家供应

**的动态流量补偿（DFC）保证热导池气体流量、压力恒定。广东LECO氧氮氢分析仪

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LECO氧氮氢分析仪

上海禹重实业有限公司主要经营范围是仪器仪表，拥有一支专业技术团队和良好的市场口碑。公司自成立以来，以质量为发展，让匠心弥散在每个细节，公司旗下光谱仪，色谱仪，质谱仪，样品前处理深受客户的喜爱。公司秉持诚信为本的经营理念，在仪器仪表深耕多年，以技术为先导，以自主产品为重点，发挥人才优势，打造仪器仪表良好品牌。禹重科技凭借创新的产品、专业的服务、众多的成功案例积累起来的声誉和口碑，让企业发展再上新高。