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.
鋼
, 銅
, 合金, 耐火金属, 鋳鉄, セラミックス, カーバイド, フェロアロイ, 鉄
, 金属, アルミニウム, シリコン, ...
ステップ1：サンプルの情報をELEMENTSソフトウェアに入力します
サンプルIDがソフトウェアに入力され、重量が自動的に転送されます（ステップ2を参照）
ステップ2：秤量して、ポートへサンプルを入れる
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.
ステップ3：分析
次に、空のグラファイトるつぼを下部電極（グラファイトチップ上）に配置し、ELEMENTSソフトウェア上で分析を開始します。このソフトウェアで、分析にかかわるすべてのステップをコントロールします。
ステップ4：データ出力とエクスポート
分析開始後120〜180秒で、測定された酸素と窒素と水素の濃度は、レポートまたはLIMSを介してデータ出力できます。
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.
成分・元素分析装置の稼働に必要な試薬とフィルターが装置の前面に配置された便利な設計です。装置稼働中は、それらは脱着可能なドアの背後に収納されます。この設計によりメンテナンス時間が短縮し、いっそう使いやすくなっています。その他にも画期的な機能を組み込み、測定の再現性をさらに高めました。
革新的なサンプルポートとパルスチャンバーフラッシング
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.
強力な触媒炉
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.
密閉されたガス管理
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.
オートクリーナー
最高3000℃でグラファイトるつぼ内のサンプルを溶融することにより、上部電極と炉内に堆積物（コンタミ）が生成され、ONH測定の再現性に悪影響を与える可能性があります。
オプションの新しいオートクリーナーは、これらの堆積物（コンタミ）を確実に除去し、回数が多い場合でも、正確な元素分析を可能にします。さらにガス精製器を使用することによる効率的なガスキャリブレーションおよび炉清掃を分析計に利用することができます。
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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.
| 測定元素 | 水素, 窒素, 酸素 |
| サンプル | 無機物 |
| 炉配列 | 垂直 |
| サンプルキャリア | 黒鉛ルツボ |
| アプリケーション分野 | automotive, aviation, metal production, metallurgy, quality control, research |
| 炉 | 電極インパルス炉 (最大 8,5 KW*), 3,000 °Cを超える温度 |
| 検出方法 | infrared absorption for oxygen and hydrogen, thermal conductivity for nitrogen |
| 標準的な分析時間 | 120 - 180 s |
| 試薬 | 水酸化ナトリウム, 過塩素酸マグネシウム, 酸化銅 |
| キャリアガス | compressed air, helium 99.995 % pure, argon 99.995% pure (if required), all gases with (2 - 4 bar / 30 - 60 psi) |
| 電源 | 3~ 400 V, 50/60 Hz, max. 8,500 W |
| 寸法 (W x H x D) | 56 x 78 x 64 cm |
| 重量 | ~ 165 kg |
| 付属品 | PC, モニター, 天秤 (分解能 0.0001g) |
| オプションアクセサリ | autocleaner, autoloader, external chiller, キャリアガス精製 |
| - | アプリケーションの設定により、6.8kwに制限 |
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