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ELTRA's CS-2000 is the only analyzer on the market for thedetermination of carbon and sulfur in organic as well as inorganic samples. For this purpose, the CS-2000 is equipped with both an induction and a resistance furnace (ELTRA Dual Furnace Technology), covering the full range of carbon and sulfur analysis.
The CS-2000 is available with up to four independent infrared cells, which allow the precise and simultaneous analysis of high and low carbon and/or sulfur concentrations. The sensitivity of the cells can be customized individually by selecting the length of the IR-paths to ensure the optimum measuring range for each application.
alloys, ashes, carbides, cast iron, cement, ceramics, coal, coke, copper, glass, gypsum, iron, limestone, metals, minerals, oil, ores, plant materials, refractory metals, rubber, sand, soils, steel, titanium, tobacco, ...
| Measured elements | carbon, sulfur |
| Samples | inorganic, organic |
| Furnace alignment | horizontal (resistance furnace) and vertical (induction furnace) |
| Sample carrier | ceramic boats / crucibles |
| Field of application | agriculture, chemistry / plastics, coal / power plant, construction materials, engineering / electronics, environment / recycling, geology / mining, glass / ceramics, medicine / pharmaceuticals, steel / metallurgy |
| Furnaces | induction furnace, above 2,000 °C resistance furnace (ceramic tube), adjustable up to 1,550 °C (steps of 1 °C) |
| Detection method | solid state infrared absorption |
| Number of IR cells | 1 - 4 |
| Material of IR path | gold |
| Typical analysis time | induction furnace 40 - 50 s resistance furnace 60 - 120 s |
| Chemicals required | copper oxide, magnesium perchlorate, sodium hydroxide |
| Gas required | compressed air (4 - 6 bar / 60 - 90 psi) oxygen 99.5 % pure (2 - 4 bar / 30 - 60 psi) |
| Power requirements induction furnace | 230 V, 50/60 Hz; max. 15 A, 3450 W |
| Power requirements resistance furnace | 230 V, 50/60 Hz, max. heating up current 20 A |
| Dimensions (W x H x D) | 88 x 80 x 60 cm |
| Weight | ~ 150 kg |
| Required equipment | balance (resolution 0.0001g), monitor, PC |
| Optional accessories | Autoloader (for 36 or 130 crucibles), carrier gas purification, halogen trap, HTF-540 pre-heating furnace, voltage stabilizer 5 KVA |
Operation CS-2000
In addition to the induction furnace (see CS-800) the CS-2000 also features a resistance furnace. The temperature can be selected in steps of 1 °C up to 1,550 C. The samples (such as coal) are weighed in ceramic boats. The weight is transferred from the interfaced balance to the PC or can be entered manually. The sample is then placed directly in the furnace for combustion, no accelerators are required. The typical analysis time is 60 to 180 seconds depending on the sample material. The combustion gases pass through the infrared cells for detection. There the signals are evaluated and the results are displayed automatically. Connection to a laboratory information management system (LIMS) is possible. The CS-2000 requires minimum maintenance and the chemicals which need to be maintained are easily accessible.
Measuring principle CS-2000
The measuring principle of the induction furnace corresponds to that of the CS-800. In the additional resistance furnace of the CS-2000 the sample is combusted in a pure oxygen stream, causing sulfur to react to sulfur dioxide (SO2), and carbon to react to carbon dioxide (CO2). Any moisture in the combustion gas is removed by magnesium perchlorate and the gas then passes into the detection unit. There the detection of the sulfur dioxide takes place in infrared cells. The CS-2000 allows for the combination of cells with different sensitivities (high/low) which makes it easily adaptable to the user’s requirements. After oxidation of sulfur dioxide to sulfur trioxide, SO3gas is removed with cellulose wool. Subsequently the carbon content is determined by infrared cells with customized measuring ranges.
