ELEMENTRAC CS‑d
ELEMENTRAC CS-d is the only analyzer in the market for determination of carbon and sulfur in organic
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Description
FULL FLEXIBILITY WITH TWO FURNACES
CONFIGURATIONS
The ELEMENTRAC CS-d is available as a single-element analyzer for carbon or sulfur only, or in a configuration for simultaneous measurement of both carbon and sulfur. It uses up to four IR cells for this purpose which can be adapted to individual requirements. As the length of the cuvette increases, so does the sensitivity for low concentrations (e. g. 10 ppm). Shorter cells can still measure samples with low levels in the ppm range, but the standard deviation of the measured values increases significantly. For optimum measurement of low and high concentrations, it is therefore recommended to use two IR cells per element. The latest detector technology enables a wide measuring range for carbon and sulfur from the ppm range up to 100 % in both induction and resistance furnace. In addition, gold cuvettes installed as standard offer greater reliability for elemental analysis of samples containing halogens.
A special option for the ELEMENTRAC CS-d is a halogen trap to reliably bind even very high halogen concentrations. The carbon / sulfur analyzer can also be delivered in a special configuration for the analysis of cement.
INTEGRATED STANDARD SOLUTIONS
The ELEMENTRAC CS-d offers intelligent solutions as standard features to provide accurate and reliable measurement of the carbon and sulfur concentrations also in complex sample:
Options
In addition to the integrated features of the ELEMENTRAC CS-d, further options are available to increase the efficiency of the carbon / sulfur measurement.
Software
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
FUNCTIONAL PRINCIPLE
Regardless of which furnace is used in the ELEMENTRAC CS-d, the carbon and sulfur in the sample forms gaseous molecules like SO2 and CO2 during combustion. The released amounts of CO2 and SO2 are measured in up to 4 element-selective infrared cells. Usually, two IR cells are used for measuring one gas (CO2 or SO2) to ensure that both very low and very high concentrations are analyzed precise and correctly.
When the induction furnace of the CS-d is used, the carrier gas (oxygen) and the combustion products (CO2, traces of CO, and SO2) are first led through a metallic filter to remove all solid particles. Afterwards, a tube filled with magnesium perchlorate removes traces of water. The dried combustion gas then passes up to two infrared cells for sulfur (SO2) measurement. Afterwards, a heated catalyst (usually platinized silica) oxidizes the traces of carbon monoxide (CO) to CO2 and the SO2 molecules to SO3. The SO3 gas is absorbed by cellulose and the CO2 is measured in up to two element selective IR cells. Finally, the combustion gas is led to the exhaust and the ELEMENTS software calculates the resulting carbon and sulfur concentrations.
Whereas the induction furnace of the ELEMENTRAC CS-d is suitable for analyzing inorganic samples like steel, cast iron and ceramics, the resistance furnace is used for combustion of organic samples like coal, coke or soil. When a coal sample is combusted at temperatures of approx. 1350° C, CO2 and SO2 are released but usually no carbon monoxide (CO) is formed. The combustion gases of the resistance furnace first pass a ceramic filter for absorption of particles, followed by a glass tube with magnesium perchlorate.
After that the dried combustion gases pass the same path as those from the induction furnace. Usually, the catalyst furnace is switched off during usage of the resistance furnace because oxidation of CO is not required.
However, the risk of incomplete combustion and formation of carbon monoxide increases at lower temperatures (~600 °C); in such cases the catalyst furnace may be switched on.
- Brand ELTRA
- Model ELEMENTRAC CS‑d
- 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
- Furnace 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 magnesium perchlorate, platinized silica (alternatively copper oxide), 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, 16 A fuse
- Power requirements resistance furnace 230 V, 50/60 Hz, 20 A fuse
- Dimensions (W x H x D) 890 x 840 x 790 mm / 35.04 x 33.07 x 31.1 in
- Weight ~ 200 kg
- Required equipment PC, monitor, balance (resolution 0.0001g)
- Optional accessories Autoloader for 36 crucibles, HTF-540 pre-heating furnace, autoloader for 130 crucibles, carrier gas purification, halogen trap
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