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.
acero, cobre, aleaciones, metales refractarios, hierro fundido, cerámica, carburos, ferroaleaciones, hierro, metales, aluminio, silicio, ...
Paso 1: Registrar la muestra en el software ELEMENTS
La identificación de la muestra se registra en el software y el peso se transfiere automáticamente (ver paso 2).
Paso 2: Pesaje de la muestra y introducción al mecanismo de carga
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.
Paso 3: Análisis
El crisol vacío se coloca en la base de soporte y se inicia el análisis elemental por el software ELEMENTS. El software controla los siguientes pasos del proceso.
Paso 4: Resultados y exportación de datos
Después de 120 à 180 segundos las concentraciones medidas están disponibles para su exportación en forma de informe o a través de un sistema LIM.
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.
Las sustancias químicas y los filtros necesarios para el funcionamiento del analizador elemental ELEMENTRAC ON-p 2 están dispuestos de forma completamente accesible en la parte frontal y pueden ocultarse tras la puerta extraíble durante el funcionamiento rutinario. Esta disposición reduce considerablemente el tiempo necesario para el mantenimiento y aumenta la facilidad de uso. Además, los detalles innovadores mejoran considerablemente la reproducibilidad de las mediciones.
Innovador mecanismo de carga tipo esclusa & enjuague pulsado de la cámara
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.
Catalizador potente
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.
Gestión de gases en circuito cerrado
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.
Autocleaner
Al fundir la muestra en un crisol de grafito a temperaturas de hasta 3000 °C se generan depósitos en el electrodo superior y en la cámara del horno, lo que puede afectar negativamente a la reproducibilidad de las mediciones.
El nuevo Autocleaner opcional elimina estos depósitos de forma fiable, y permite realizar análisis elementales precisos, incluso con grandes rendimientos. Además, el analizador elemental dispone de un eficiente horno de calibración y limpieza de gases para la limpieza preliminar del gas portador.
Todos los analizadores de ELTRA se integran a la perfección en la plataforma IoT de Verder Scientific, ofreciendo funciones avanzadas, conectividad sin interrupciones y ventajas adicionales:
¡Experimente ahora la potencia de la plataforma IoT de Verder Scientific y aproveche todo el potencial de sus analizadores de ELTRA!
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.
| Elementos | hidrógeno, nitrógeno, oxígeno |
| Tipo de muestras | inorgánicas |
| Posición del horno | vertical |
| Portamuestras | crisoles de grafito |
| Área de aplicación | automotive, aviation, metal production, metallurgy, quality control, research |
| Tipo de horno | horno a impulsos (máx. 8,5 KW*), temperaturas superiores a 3.000 °C |
| Principio de medición | infrared absorption for oxygen and hydrogen, thermal conductivity for nitrogen |
| Tiempo de análisis típico | 120 - 180 s |
| Sustancias químicas requeridas | hidróxido de sodio, perclorato de magnesio, óxido de cobre |
| Gases requeridos | compressed air, helium 99.995 % pure, argon 99.995% pure (if required), all gases with (2 - 4 bar / 30 - 60 psi) |
| Conexión eléctrica | 3~ 400 V, 50/60 Hz, max. 8,500 W |
| Medidas (A x H x F) | 56 x 78 x 64 cm |
| Peso | ~ 165 kg |
| Accesorios requeridos | PC, monitor, balanza (resolución 0,0001 g) |
| Accesorios opcionales | autocleaner, autoloader, external chiller, purificación de gases |
| - | * limitado a 6,8 kw en las opciones de aplicación |
Reservado el derecho a realizar modificaciones técnicas o correcciones.
