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Operation of the ELEMENTRAC CS-d is easy and convenient and only requires a few steps. The typical sample weight for carbon / sulfur analysis is about 50 to 1000 mg. This is sufficient to reliably detect concentrations from 1 ppm to 100%. Before the combustion process it is necessary to extract a sample from the initial amount which strongly varies, depending on the matrix. International standards like DIN EN ISO 14284 (Sampling of steel and iron) give some orientation.
Sample volumes of 50 mg to 1000 mg are typical for C/S analysis. The sample is weighed in a ceramic crucible and accelerators like tungsten are added. The geometry of the sample (e. g. wire, powder, pin etc.) is not essential for a reliable analysis.
The ceramic crucible is then placed on the pedestal of the CS-d and the analysis is started via the ELEMENTS software. The software controls all subsequent steps like combustion and evaluation.
45-60 seconds after the analysis has started, the measured carbon and sulfur concentrations are available for export as a report or via LIMS.
Volumes of 50 mg to 500 mg are typical for C/S analysis in a resistance furnace. The sample is directly applied to a boat. Accelerators are usually not required.
The sample is placed in front of the furnace and the measurement is started in the software. A green LED signals when the sample can be introduced. During combustion the ELEMENTS software continuously records measurement values.
60 to 240 seconds after the analysis has started, the measured carbon and sulfur concentrations are available for export as a report or via LIMS.
The ELEMENTRAC CS-d is available as a single-element analyzer for carbon or sulfur only, or in a configuration for simultaneous measurement of both carbon and sulfur. It uses up to four IR cells for this purpose which can be adapted to individual requirements. As the length of the cuvette increases, so does the sensitivity for low concentrations (e. g. 10 ppm). Shorter cells can still measure samples with low levels in the ppm range, but the standard deviation of the measured values increases significantly. For optimum measurement of low and high concentrations, it is therefore recommended to use two IR cells per element. The latest detector technology enables a wide measuring range for carbon and sulfur from the ppm range up to 100 % in both induction and resistance furnace. In addition, gold cuvettes installed as standard offer greater reliability for elemental analysis of samples containing halogens.
A special option for the ELEMENTRAC CS-d is a halogen trap to reliably bind even very high halogen concentrations. The carbon / sulfur analyzer can also be delivered in a special configuration for the analysis of cement.
Infrared cells with flexible measuring range
The ELEMENTRAC CS-d offers intelligent solutions as standard features to provide accurate and reliable measurement of the carbon and sulfur concentrations also in complex sample:
Intelligent Lance Management
Due to the high temperatures in the induction furnace of >2000 °C and the high oxygen flow of 180 L/hour, solid samples of all types are completely decomposed, allowing for determination of the C/S content with the aid of infrared measuring cells. Here, thorough combustion ensures reliable measurement results.
Since powder samples might splash out of the crucible, which could lead to results below the actual value, the CS-d features an intelligent lance and combustion management system to ensure complete combustion without sample loss.
For this purpose, the oxygen flow to be dosed can be applied via a lance or the chamber to prevent blowing of the sample and allowing for controlled combustion. The ramping function of the induction furnace enables a gentle combustion process by gradual power increase.
Sample port in the resistance furnace (blank value reduction)
The ELEMENTRAC CS-d provides accurate and reliable analysis of samples with a low carbon content in the resistance furnace. Thanks to the optimized sample port geometry with reduced diameter and oxygen flushing at the sample entrance, the CO2 blank value of the atmosphere is drastically reduced when the sample is introduced which allows for reliable results in the low measuring range.
In addition to the integrated features of the ELEMENTRAC CS-d, further options are available to increase the efficiency of the carbon / sulfur measurement.
The induction furnace of the ELEMENTRAC CS-d can be equipped with an optional automatic sample loader. The standard module offers 36 crucible positions, the XL model even features 130 positions. It is the largest Autoloader available in the market for this type of application.
Carbon can be determined as total carbon (TC) or in fractions, i. e. total organic carbon (TOC) or total inorganic carbon (TIC). When combined with the CS-d, ELTRA’s TIC module measures the TIC content (e. g. lime) by acidification in products like soil or construction materials.
All ELTRA analyzers seamlessly integrate with the Verder Scientific IoT platform, providing enhanced functionality, seamless connectivity, and additional benefits:
Experience the power of the Verder Scientific IoT platform today and unlock the full potential of your ELTRA analyzers!
The comprehensive Windows-based ELEMENTS software is an essential part of all ELEMENTRAC generation elemental analyzers.
A central window (analysis and results) is the starting point from which all functionalities required for the daily routine are easily accessible. From here it is possible to group and export analyzed samples, or register and analyze new ones. The user may call up various subordinate functionalities like application settings, calibration, diagnosis, or status.
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coal
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| Измеряемые элементы | сера, углерод |
| Материал проб | органические и неорганические материалы |
| Направление ввода пробы в печь | вертикально (индукционная печь), горизонтально (печь сопротивления) |
| Подача пробы в печь | лодочки / тигли |
| Область применения | Сталелитейное производство/ Металлургия, геология / добыча ископаемых, инженерное дело / электроника, медицина / фармацевтика, окружающая среда / переработка, сельское хозяйство, стекло / керамика, строительные материалы, угольная промышленность / энергетика, химическая промышленность / пластики |
| Печи | индукционная печь с температурой выше 2000 °C / печь сопротивления, температура настраивается с шагом 1 °C максимум до 1550 °C |
| Принцип детектирования | метод инфракрасной абсорбции |
| Количество ИК кювет | 1 - 4 |
| Материал ИК кювет | золотые |
| Типичное время анализа | индукционная печь 40 - 50 с / печь сопротивления 60 - 120 с |
| Требуемые реактивы | гидроксид натрия, перхлорат магния, платинизированный силикагель (замена оксида меди) |
| Требуемый газ | сжатый воздух (4 - 6 bar) кислород чистоты 99.5 % или лучше (2 - 4 bar) |
| Требования к электропитанию при работе с индукционной печью | 230 В, 50/60 Гц, предохранитель на 16 А |
| Требования к электропитанию при работе с печью сопротивления | 230 В, 50/60 Гц, предохранитель на 20 А |
| Размеры (Ш x В x Г) | 89 x 84 x 79 см |
| Вес | ~ 200 кг |
| Требуемое оборудование | ПК, монитор, весы (точность 0.0001г) |
| Опции | Autoloader for 36 crucibles, HTF-540 pre-heating furnace, autoloader for 130 crucibles, Газ носитель, Галогеновые ловушки |
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