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Carbon / Sulfur Analyzer ELEMENTRAC CS‑d

Carbon / Sulfur Analyzer ELEMENTRAC CS-d
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ELTRA's ELEMENTRAC CS-d is the only analyzer in the market for determination of carbon and sulfur in organic as well as inorganic samples. For this purpose, the ELEMENTRAC CS-d is equipped with both an induction and a resistance furnace (ELTRA Dual Furnace Technology), covering the full range of carbon and sulfur analysis.

Up to four highly sensitive infrared (IR) cells allow for precise measurement of both high and low carbon and sulfur concentrations in only one analysis. The measuring range of each cell may be adapted to the user's specific requirements to ensure optimum measurement conditions for each application.

The ELEMENTRAC CS-d is supplied with the comprehensive and user-friendly ELEMENTS software.

Product Video

Carbon / Sulfur Analyzer ELEMENTRAC CS-d Operation and Analysis Process

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.

Induction Furnace

Step 1: Logging the sample into the ELEMENTS software

Step 1: Logging the sample into the ELEMENTS software

The sample ID is logged into the software and the weight is automatically transferred (see step 2).

Step 2: Weighing and adding of accelerators

Step 2: Weighing and adding of accelerators

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.

Step 3: Analysis

Step 3: 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.

Step 4: Data output and export

Step 4: Data output and export

45-60 seconds after the analysis has started, the measured carbon and sulfur concentrations are available for export as a report or via LIMS.

Step 1: Logging the sample into the ELEMENTS software

Step 1: Logging the sample into the ELEMENTS software

The sample ID is logged into the software and the weight is automatically transferred (see step 2).

Step 2: Weighing of the sample

Step 2: Weighing of the sample

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.

Step 3: Analysis

Step 3: Analysis

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.

Step 4: Data output and export

Step 4: Data output and export

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.

Infrared cells with flexible measuring range

Infrared cells with flexible measuring range

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.  

Intelligent Lance Management

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.

Sample port in the resistance furnace (blank value reduction)

Autoloader

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.

TIC Module

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.

TIC Module

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.

 

ELEMENTS Software

Carbon / Sulfur Analyzer ELEMENTRAC CS-d Typical Sample Materials

alloys, ashes, carbides, cast iron, cement, ceramics, coal, coke, copper, glass, gypsum, iron, limestone, metals, minerals, oil, ores, plant materials, refractory metals, rubber, sand, soil, steel, titanium, tobacco, ...

 coal
 ores
steel

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