Comprehensive analyser control and easy operation are provided by the software running on PC, connected to the analyser.
Click software from the main menu for more information about software.

The infrared cells of the CS-2000 do not require any manual zero adjustments. The zero and sensitivity adjustments of the infrared cells are permanently and automatically controlled by the electronics. The detectors utilize solid state sensors combined with infrared filters. The sensors are not gas filled, thus eliminating long term problems due to gas leakage. The CS-2000 can be equipped with up to four independent infrared cells.
The lengths of all four cells can be individually optimized, to obtain maximum precision for the target analysis levels of each customer. Each of the cells can be installed with infrared absorption lengths ranging between 1mm and 320mm.

The design of the resistance furnace boat stop ensures oxygen carrier gas penetrates into the crucible, ensuring efficient combustion. This design eliminates the need for fragile lances and honeycomb boat stops which tend to block easily with ash. Additionally the boat stop protects the combustion tube from the aggressive combustion products, thus extending the life of the tube. The combustion tube is a simple straight ceramic tube that is robust and inexpensive to replace. The life expectancy of the tube is measured in thousands of analyses and not hundreds as is the case with other analysers. (Protected by German utility model)

A variety of combustion boats can be used in the furnace, including the reusable ceramic boats (L=57 mm, W=22mm, H=13 mm). Porcelain or quartz boats are also an option.

Users of carbon and sulfur analyzers with Induction furnaces know that dust accumulates during combustion and forms deposits (mainly of iron and tungsten oxides) in the combustion chamber.
The CS-2000 furnace is cleaned automatically after each analysis, thus ensuring repeatable and accurate results without the time consuming and unpleasant task of manual furnace cleaning.
The standard cleaning apparatus is mechanically attached to the furnace open/close system, thus ensuring it is not possible for the cleaning brush to collide with a hot crucible.

The efficient design of the cleaning mechanism rules out any possibility of the cleaning brush catching fire. To confirm this fact, ELTRA offers free replacement of each burned cleaning brush, during the entire working life of the analyzer.

The induction furnace and the autoloader use standard ceramic crucibles, which are 1” or 25 mm in diameter.

Due to the fact that free carbon and sulfur burn at lower temperatures than carbides and sulfates, the CS-2000 can separate and measure free carbon, free sulfur and carbides and sulfates. After inserting the sample in the combustion boat into the resistance furnace, the boat gradually heats up. The free carbon and sulfur within the sample burn first, while carbides and sulfides burn several seconds later. The peak separation software integrates the individual peaks and then displays the results at the end of the combustion.

Due to the modular design of the CS-2000, a module for total inorganic carbon (TIC) can be placed between the resistance furnace and the analyzer. For the TIC determination, the sample is treated with acid in the TIC module. TIC and total carbon (TC) can be alternately analyzed without modifications. For TIC analysis the sample is treated with acid in an Erlenmeyer flask inside the TIC-module. The acid decomposes the carbonates in the sample, creating CO2. The oxygen flow purges the CO2 out of the flask, through to the infrared detector. TC is determined when the sample is introduced into the furnace for combustion and IR detection.

An empty flask is placed on the balance. The tare button is pressed. The sample is put into the flask. The sample weight is entered into the analyzer by pressing a key. A magnetic stirrer is placed into the flask. The flask is attached to the TIC-module and the heated platform is raised. The start key is pressed.
The acid is injected with the magnetic stirrer rotating. The CO₂ is released from the sample. The infrared cell begins detection. When all the CO₂ has been released from the sample, the detector`s signal will return down to the baseline level and the analysis will be terminated.

The ceramic crucibles for the induction furnace can be preheated in the high temperature furnace HTF-540. The preheating reduces the blank value of the crucibles. This is important for analysis in the very low ppm range. The crucibles are inserted into the furnace tube and they remain preheated in the tube until needed. Each time a crucible is needed, a new one is inserted into the tube, and a preheated crucible falls out the other end of the furnace tube. The recommended preheating temperature is between 1250°C and 1350°C.

The CS-2000 can be supplied with an automatic sample loading system. This loading system may also be retrofitted at a later date. The features of the loading system are:
• Unlike many other auto loaders the ELTRA system can accomodate 130 samples giving hours of unattended operation. On request, the loader can be delivered for more crucibles.
• The auto loader, which does not occupy any additional bench space, is mounted above the area where the balance, PC, monitor and consumables are normally situated.
• The crucible positions in the loader are easily accesible to the operator even from a sitting position.
• Three available models for 130, 104 and 36 crucibles.
• Additional samples can be added whilst the system is running and the “out of the sequence” feature will allow urgent samples to be analysed immediately.
• Dispensers for accelerators are available. Depending on the applications, up to two dispensers can be attached to the analyser, for example, one for tungsten and one for iron accelerator. The dispensers are controlled by the loader software.
• Absolutely reliable.
• Reasonably priced.
For installing the auto loader, the resistance furnace should be positioned to the right of the analyser.