1800 040 608

CSi- Carbon / Sulphur Determinator

The new carbon / sulphur analyser ELEMENTRAC CS-i was developed for the accurate and safe analysis of carbon and sulphur in inorganic samples. The analyser is equipped with a powerful induction furnace for sample combustion.

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

The analyser is supplied with the new comprehensive and convenient ELEMENTS software, which features statistics, groupings, reports, diagnosis tools and many additional functions for ELEMENTRAC analysers.

Alloys, carbides, cast iron, cement, ceramics, copper, glass, iron, minerals, ores, refractory metals, sand, steel, titanium, …

  • simultaneous carbon and sulphur determination with minimal sample preparation
  • wide range of inorganic materials can be analysed
  • freely selectable configuration of each IR cell
  • optional gold IR path for analysis of halogen or acid containing samples
  • control of induction performance provides more precise analysis of samples with low melting temperature
  • powerful (2.2 kW) induction furnace for temperatures above 2,000 °C
  • NEW: automatic vacuum cleaning system ensures higher measurement precision and stability
  • heated and easily accessible dust trap allows for improved sulphur detection
  • optimized catalyst reactor permits more accurate carbon detection
  • NEW: ELEMENTS software with comprehensive analysis and diagnosis tools (supporting data and application export, comment fields, and many more)
  • single and multipoint calibration
  • low maintenance

robust design allows usage in production control and laboratory

Measured elements

carbon, sulphur



Furnace alignment


Sample carrier

ceramic crucibles

Field of application

construction materials, engineering / electronics, geology / mining, glass / ceramics, steel / metallurgy


induction furnace, above 2,000 °C

Detection method

solid state infrared absorption

Number of IR cells

1 – 4

Material of IR path

aluminium (optional gold)

Typical analysis time

40 seconds (nominal)

Chemicals required

magnesium perchlorate, platinum-based catalyst, sodium hydroxide

Gas required

compressed air (4 bar/ 60 psi)
oxygen 99.5 % pure (2 – 4 bar / 30 – 60 psi)

Power requirements

230 V, 50/60 Hz, max. 15 A, 3450 W

Dimensions (W x H x D)

52 x 84 x 75 cm


~ 150 kg

Required equipment

balance (resolution 0.0001g), monitor, PC

Optional accessories

Autoloader (for 36 crucibles), carrier gas purification, halogen trap, HTF-540 pre-heating furnace, vacuum cleaner

Carbon / Sulphur Analyser CS-i: Operation

Operating the CS-i is simple and safe. After weighing the sample in a ceramic crucible, the weight is transferred from the interfaced balance to the PC. If required, sample weights can also be entered manually. Then an accelerator (such as iron or tungsten) is added and, after having placed the crucible on the pedestal, the analysis starts. The analysis time is 40 to 50 seconds. The detector signals and instrument parameters are displayed during analysis. Evaluation of the signals and display of the results are done automatically; the data can be transferred to a laboratory information management system (LIMS). The CS-i requires minimum maintenance. The particle filters and chemicals which need to be maintained are easily accessible.

Carbon / Sulphur Analyzer CS-i: Measuring Principle

In the induction furnace the sample is melted in a pure oxygen atmosphere, causing sulphur to react to sulphur dioxide (SO2) and carbon to a mixture of carbon monoxide (CO) and carbon dioxide (CO2). The combustion gases pass through a dust filter and moisture absorber for purification. In the next step the sulphur dioxide is detected in infrared cells. In the CS-i infrared cells with different sensitivities (high/low) can be adapted according to the user’s requirements. Oxidation of both, carbon monoxide to carbon dioxide and sulphur dioxide to sulphur trioxide follow the sulphur measurement. The SO3 gas is removed with cellulose wool; the carbon content is detected by infrared cells which can be individually customized. The ELTRA CS-i analyser can be equipped with up to 4 independent infrared cells

CSi- Carbon / Sulphur Determinator - Enquiry

7 + 7 =