Carbon / Hydrogen / Sulfur Analyzer CHS-580



ELTRA‘s CHS-580 is the ideal analyzer for the simultaneous determination of carbon, hydrogen and sulfur in organic samples.

Thanks to sample weights of 500 mg and more, even inhomogeneous materials can be reliably analyzed. The temperature of the powerful horizontal resistance furnace with ceramic tube can be set in steps from 1 °C to a maximum of 1,550 °C.

The analyzer can be equipped with up to three  independent infrared cells according to the user‘s requirements, allowing for a great variety of applications.

Application Examples

coal, coke, oil, plant materials, rubber, soot, tobacco, waste, ...

Product Advantages

  • simultaneous carbon, sulfur and hydrogen determination with minimal sample preparation
  • wide range of organic materials can be analyzed
  • rapid, precise, accurate and reliable element determination
  • resistance furnace can be set up to 1550 °C in steps of 1 °C
  • customized infrared cells provide wide, dynamic measuring range
  • due to gold IR path, increased cell live time for analysis of halogen or acid containig samples
  • powerful software (multilingual, customized display, export of results)
  • single and multipoint calibration
  • low maintenance
  • robust design allows usage in production control and laboratory


Measured elements carbon, hydrogen, sulfur
Samples organic
Furnace alignment horizontal
Sample carrier ceramic boats
Field of application agriculture, biology, chemistry / plastics, coal / power plant, construction materials, environment / recycling, medicine / pharmaceuticals
Furnace resistance furnace (ceramic tube), adjustable up to 1550 °C (steps of 1 °C)
Detection method solid state infrared absorption
Number of IR cells 1 - 3
Material of IR path gold
Typical analysis time 60 - 180 s
Chemicals required magnesium perchlorate, sodium hydroxide
Gas required oxygen 99.5 % pure (2 - 4 bar / 30 - 60 psi)
Power requirements 230 V, 50/60 Hz
max. heat up current 2000 W
Dimensions (W x H x D) 55 x 80 x 60 cm
Weight ~ 70 kg
Required equipment balance (resolution 0.0001g), monitor, PC
Optional accessories TIC module, voltage stabilizer 5 KVA

Function Principle

Operation CHS-580

After weighing the sample in a ceramic boat, the weight is transferred from the interfaced balance to the PC. If required, sample weights can also be entered manually. Then the ceramic boat is introduced into the furnace for combustion. The average analysis time is 60 to 180 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-580 requires minimum maintenance. The particle filters and chemicals which need to be maintained are easily accessible.

Measuring Principle CHS-580

In the CHS-580 the sample is burnt in an oxygen atmosphere at temperatures up to 1,550 °C. The furnace temperature can be freely selected in steps of 1 °C. The combustion gasses (CO2, H2O, SO2) coming from the furnace and first pass through a dust filter and then into the heated H2O infrared cell. After the water vapor is chemically absorbed, the dried CO2 and SO2 gas is detected in the additional infrared cells. Depending on the configuration, it is possible to combine up to three infrared cells with different sensitivities.

Subject to technical modifications and errors