CW-800 / CW-800M / SURFACEC-800
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Carbon and Water Analyzers CW-800 | CW-800M | SurfaceC-800 Fractional analysis of O CO2 and H2 ries CW-800 se

Specialists for Elemental Analysis ELTRA has been one of the leading manufacturers of elemental analyzers for more than 30 years. Starting with combustion analyzers for carbon and sulfur determination, ELTRA has extended its product range over the years with analyzers for oxygen, nitrogen and hydrogen as well as thermogravimetric analyzers. ELTRA instruments are used in industries such as steel, mining, automotive and aviation, construction materials and in universities for Research & Development. ELTRA is synonymous with high quality, customer-oriented solutions and efficient products....

Carbon and water analysis Fractional analyzers like ELTRA’s CW-800 or CW-800M easily and reliably determine different carbon species. In gypsum, for example, carbon occurs in two forms: bound to carbonate (TIC = Total Inorganic Carbon), and bound to organic compounds (TOC = Total Organic Carbon). Both values influence the gypsum quality in different ways. Steel samples also require fractional carbon analysis. The total carbon content can be divided into a surface-bound and metal-bound part. The latter results from steel production whereas surface carbon occurs during steel processing (for...

Carbon and water analyzers CW-800 Carbon dioxide Resistance furnace The perfect analyzer for fractional carbon determination Benefits ■ Simultaneous CO2 and H2O determination ■ Freely selectable temperature up to 1,000  °C ■ Quartz tube for sensitive measurements ELTRA’s CW-800 series is designed for fractional carbon and water analysis. The CW-800 is used for the determination of one single fraction (e. g. carbonate-bound carbon) whereas the CW-800M (M = Multiphase) utilizes ramping to determine different fractions. The CW-800 is the perfect analyzer for the fractional determination of...

Simple operation and quick results: CW-800 Operation of the CW-800 is simple and safe. The sample is weighed in a quartz boat on the interfaced balance and the weight is transferred to the linked PC. Manual weight entry is also possible. The boat is then placed on the loading head of the CW-800. When the analysis process is started, the user introduces the sample with a sample feeder into the combustion area, and CO2 and H2O are released under the selected conditions (e.  nig. trogen as carrier gas, furnace temperature of 950  °C). The signals of the detectors and the instrument parameters...

Carbon and water analyzers Carbon dioxide TOC and TIC on in one determinati sis single analy CW-800M Resistance furnace Complete fractional analysis with CW-800M Benefits ■ Freely programmable temperature profile ■ Catalyst furnace for CO oxidation ■ Split furnace allows for accelerated cooling The CW-800M is ideally suited to determine different carbon and water fractions in one single analysis. The analyzer is equipped with two carrier gas connections allowing for alternating use of nitrogen and oxygen in one analysis cycle. The CW-800M (Multiphase) permits changing the carrier gas and...

Applications - Inorganic and Organic Cement, gypsum, lime, soil, minerals, slag, waste and many more ELTRA's CW-800 series quickly, precisely and safely analyzes the CO2 and H2O contents of organic and inorganic sample materials. The instruments apply furnace temperatures of up to 1,000 °C and different carrier gases. Example CW-800: Determination of carbonate in cement The quality of cement is characterized by the water contents and carbonate-bound carbon. In the example below the cement sample was measured in the CW-800 at 1,000°C under nitrogen atmosphere to analyze the water and...

Surface Carbon Analyzer SurfaceC-800 ELTRA Carbon dioxide Resistance furnace For larger les sized samp 00 SurfaceC-8 Benefits ■ Wide furnace for samples up to 32 x 145 mm ■ Freely selectable temperature up to 1,000  °C ■ 2 IR cells provide wide measuring range ■ Unique loading head Convenient determination of surface carbon Apart from the metal-bound carbon, the carbon content of the sample surface is also important. For example, undesired contaminations of the surface influence the adhesion of paint. In some cases however, surfaces are also specifically treated, e. g. with oil to avoid...

Simple operation and quick results: SurfaceC-800 ELTRA has developed a special loading head to avoid contamination through the wide furnace opening. It consists of a quartz closure (1) with a reduced diameter, compared to that of the combustion tube, to effectively minimize gas exchange with the analyzer’s interior. The sample (2) is placed on a particularly wide quartz boat (3) and the analyzer is closed with the boat holder (4). The incoming oxygen now purges the loading head and quartz boat of ambient CO2. When the analysis starts, the quartz boat containing the sample is introduced into...

The SurfaceC-800 with its resistance furnace allows for convenient analysis of the surface carbon content in metal samples. The wide furnace and the maximum temperature of 1,000  °C make the analyzer suitable for a variety of applications. Typical sample materials Steel, iron, copper, refractory metals and many more Carbonates The SurfaceC-800 can be calibrated with CO2 gas as well as with synthetic carbonate standards, as calibration materials for metal surfaces are not always easily available. The graphic shows typical results for a 100 mg sample. Measurement results carbonates Ten 100 mg...

PC control with Windows®-based software ELTRA’s instrument software ensures convenient control and operation of the analyzers CW-800, CW-800M und SurfaceC-800. It is multilingual, easy to understand and provides the following features: ■ Custom layouts: user-defined display of windows and storage of different layouts ■ User profiles with multi-level access: creation of different hierarchy levels with different authorizations ■ Sample ID memory and serial numbering of samples ■ Storage of analysis results in data base: the data of each analysis is stored and can be called up later for...