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Procedure - Solid Samples

Prepare the instrument as outlined in the operator's instruction manual.

Determine the instrument blank.

Login a minimum of 3 Blank replicates.

Press the Analyze button on the instrument screen. After a short delay, the loading head slide-block will open. Place a 502-344 Nickel Basket into the loading head.

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.

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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.

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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.

氧氮氢分析仪的常见故障及解决方法

仪器启动时显示。没有水流。系统分析电流切断，分析停止。这是水流探测器不正常，水泵不工作，管道堵塞。将仪器的右面板取下，观察水流探测器，用手挤压补水塑料水瓶，发现水流正常，显示正常，证明水流探测器正常，管道畅通。启动循环水泵，但分析仪显示没有水流，此时可判定水泵不正常。打开水泵转子密封口，启动泵发现电机正常运转，此时关闭进水，拆下水泵，发现叶轮脱落。经了解，判定是由于外部冷却水停水，仪器内循环水温过高（水温应≤70℃），致使叶轮（叶轮材料PVC）热胀并脱轴。用粘合剂粘合叶轮后再粘于叶轮轴上，待粘合剂凝固后试车，仪器运行正常。 双直流风扇保证持续冷却，不受电压波动的影响。

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

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采用三个**的红外器检测氧含量，同时检测CO和CO2，然后在转化为CO2集中检测。广东进口分析仪厂家直销

随着现在科学技术的发展，仪器仪表行业发生了突飞猛进的发展，再加上当前计算机技术、网络技术的进步和发展，组建网络而构成实用的监控系统，可以提高生产效率和共享信息资源方向发展。当前仪器仪表行业产品发展呈现微型化、多功能化、智能化、网络化四大发展趋势。我国现有有限责任公司（自然）企业数千多家，已经形成门类品种比较齐全，具有一定技术基础和生产规模的产业体系。但同时业内行家也指出，虽然我国测试仪器产业有了一定的发展，但远远不能满足国民经济各行各业日益增长的迫切需求。伴随移动互联网的爆发式增长，如今，它已经渐渐取代电子商务成为了整个互联网产业增速**快的领域，而移动终端的入口也随即成为了传统行业的必争之地。光谱仪，色谱仪，质谱仪，样品前处理行业进军移动互联网实现线上发展势在必行。我们必须承认，在科学仪器上，我们跟其他地区相比，还有很大的差距。这个差距，就是我们提升的空间。合相关部门、大学和企业之力，中国的服务型必将在不远的将来，在相关领域的基础研究和重点光学部件研发上取得突破，产品进入世界中**水平，企业得到台阶式上升，迎头赶上，与全球出名企业并驾齐驱。广东进口分析仪厂家直销

上海禹重实业有限公司致力于仪器仪表，是一家服务型公司。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。公司注重以质量为中心，以服务为理念，秉持诚信为本的理念，打造仪器仪表良好品牌。在社会各界的鼎力支持下，持续创新，不断铸造***服务体验，为客户成功提供坚实有力的支持。