The new ELEMENTRAC ONH-ps is a powerful and robust elemental analyzer for the simultaneous determination of oxygen, nitrogen and hydrogen concentrations in inorganic samples such as steel, iron, copper or ceramics. The highly sensitive NDIR cells without moving parts and the thermal conductivity detector for nitrogen measurement reliably detect element concentrations from the low ppm range to the high percentage range.
Thanks to the novel sample lock with pulsed chamber purging and vertical fall channel, user-friendly and convenient analysis of rod-shaped, granular or powdery samples with a weighed portion of up to 2 grams is easily possible. The ELEMENTRAC ONH-ps elemental analyzer meets or exceeds the requirements of all common international standards, such as ASTM E 1019 or DIN EN 3976.
钢铁, 铜, 合金, 难熔金属, 铸铁, 陶瓷, 碳化物, 铁合金, 铁, 金属, 铝, 硅, ...
步骤1:将样品信息输入到ELEMENTS软件中
样品名称被输入到软件中，重量信息将被自动转移到软件中（见第2步）
第2步：称量并将样品投入进样口
The ELEMENTRAC ONH-ps analyzes volumes from a few mg up to 2 grams safely and precisely. Rod-shaped or granular samples can be applied directly. For the elemental analysis of powders, a capsule is recommended which does not have to be sealed.
第三步：分析
然后将空石墨坩埚放置在下电极上，通过ELEMENTS软件点击开始，进行元素分析。软件会控制随后所有的分析步骤。
第四步：输出数据
分析开始后的120到180秒，被检测到的含量可以以报告的形式或者通过LIMS导出
Common O/N/H analysis for inert gas fusion analyzers mean that a thermal conductivity cell is used for both hydrogen as well as for nitrogen analysis. This means that two independent measurements have to be performed when determination of nitrogen and hydrogen is required. The ELEMENTRAC ONH-ps utilizes a new designed water IR cell without moving parts which allows a reliable measurement of hydrogen as water even in the lower ppm concentration range. This allows the simultaneous measurement of oxygen, nitrogen and hydrogen in one sample.
| Element | Measured as | Detector | ||||
| Oxygen | CO2 | IR | ||||
| Nitrogen | N2 | TCD | ||||
| Hydrogen (Common technique) | H2 | TCD | ||||
| Hydrogen(new technique) | H2O | IR | ||||
The ELEMENTRAC ONH-ps is a multi-element analyser for the parallel determination of oxygen, nitrogen and hydrogen (ONH). While oxygen is detected as CO2 and hydrogen as H2O in infrared measuring cells, nitrogen is determined in elemental form using a thermal conductivity cell. The ELEMENTRAC ONH-ps uses helium or, alternatively, argon as the carrier gas.
The ELEMENTRAC ONH-ps uses our newly developed infrared measuring cells without moving parts. These measuring cells are characterised by a very good signal-to-noise ratio and high stability.
The ELEMENTRAC ONH-ps elemental analyzer is available as a single-element analyzer for hydrogen only, or in a multi-element configuration for measuring ONH. Whereas oxygen and hydrogen are determined as CO2 and H2O in up to three infrared cells, nitrogen is detected in its elemental form in a thermal conductivity cell.
元素分析仪操作所需的净化管和过滤装置安装在面板正面，在日常操作中可将其隐藏在可拆卸门后面。这种安排大大减少了维护所需的时间，并增加了用户良好的体验感。此外，创新细节大大提高了测量的重复性。
创新的样品进样口&脉冲脱气样品室
The new sample port of the ONH-ps elemental analyzer ensures comfortable operation and reproducible measured values. Differently shaped materials like solid pieces, granules or powder in capsules can be applied up to a weight of 2000 mg, and are quickly freed from the surrounding atmosphere with the help of pulsed carrier gas flushing in the sample port. Then they drop vertically into the preheated graphite crucible for analysis.
强大的催化剂
During fusion of the sample CO is formed, whereas hydrogen and nitrogen are released in elemental form. The powerful catalyst furnace oxidizes CO to CO2 and hydrogen to water, which are subsequently measured in the IR cells. The high temperature catalyst furnace with copper oxide filling guarantees the complete oxidation of CO to CO2 and of course of H2 to gaseous H2O.
封闭气体管理
The ELEMENTRAC ONH-ps elemental analyzer series uses a closed gas system in overpressure. This ensures that always 100% of the released sample gas is fed to the detectors which guarantees low detection limits and good reproducibility.
自动清扫仪
样品在高达3000°C的温度下熔化在石墨坩埚中会导致上电极和炉膛中产生积碳，这将对ONH测试的重复性产生负面影响。 全新可选配的自动清扫仪能可靠地清除这些积碳，在高通量的情况下也能做到精确的元素分析，除此之外，元素分析仪还具有高效的气体校准功能和炉体清洁中的载气预清洁功能。
所有ELTRA元素分析仪均可集成到Verder Scientific物联网平台，平台可以提供更强大的功能，体现更多的优势，与仪器做到无缝链接：
立即体验 Verder Scientific 物联网平台的强大功能，充分挖掘 ELTRA 元素分析仪的潜力！
The ELEMENTRAC ONH-ps uses a measuring principle with a wide operating range. To analyse the sample, it is weighed and placed in the sample lock. Flushing with carrier gas ensures that no atmosphere (e.g. nitrogen and oxygen) enters the analysis chamber.
The graphite crucible is then annealed in the pulse furnace to reduce any contamination, such as residual hydrogen. After a stabilisation phase, the sample falls into the graphite crucible and is melted. Elemental nitrogen, hydrogen and carbon monoxide are released from the sample melt into the carrier gas stream. The carbon monoxide comes from the reaction of the carbon in the graphite crucible with the oxygen in the sample. The carrier gas (helium) and the sample gas pass through a dust filter before entering a copper oxide catalyst, where CO is converted to CO2 and elemental hydrogen to H2O.
The resulting CO2 and H2O are then detected in the infrared cells. CO2 and H2O are chemically removed and the nitrogen content is measured in the heat conduction cell.
Optionally, inexpensive argon can be used instead of helium as the carrier gas for determining oxygen and nitrogen.
| 分析元素 | 氢, 氧, 氮 |
| 样品 | 无机 |
| 炉子校准 | 垂直 |
| 载样 | 石墨坩埚 |
| 应用领域 | automotive, aviation, metal production, metallurgy, quality control, research |
| 炉子 | 脉冲炉功率高达8.5 kw，温度最高3000℃ |
| 检测方式 | infrared absorption for oxygen and hydrogen, thermal conductivity for nitrogen |
| 典型分析时间 | 120 - 180 s |
| 化学品 | 氢氧化钠, 氧化铜, 高氯酸镁 |
| 载气 | 压缩空气，氦99.995% 纯净，氩99.995% 纯净(如果需要) ，所有气体(2 - 4 bar / 30 - 60 psi) |
| 功率要求 | 3~ 400 V, 50/60 Hz, 最大功率8,500 W |
| 设备尺寸（宽x高x深） | 56 x 78 x 64 cm |
| 重量 | ~ 165 kg |
| 所需设备 | 电脑,显示器,天平(精度0.0001克) |
| 选配件 | autocleaner, autoloader, external chiller, 载气净化 |
| - | 脉冲炉功率高达8.5 kw |
保留技术变更和出错的权利
