Eltra Carbon / Water Analyzer CW 800

Determination of released carbon dioxide and water is a special requirement for quality control in the cement and lime industry. ELTRA’s CW-800 analyzer is designed for the precise, simultaneous determination of carbon dioxide and water in lime, gypsum and cement from trace level up to 100 % (depending on sample weight).

Other sample materials include ores, soil and minerals. The CW-800 is equipped with a resistance furnace with quartz tube for sample oxidation and can provide temperatures up to 1000 °C. The temperature of the CW-800 can be set up in steps of 1 °C and the temperature is fixed during measurement. As common carrier gas in the CW-800 nitrogen is used.

The detection system of ELTRA’s CW-800 is very sensitive, reliable and guarantees a long lifetime. It can be customized according to the user’s requirements. Two infrared cells can be combined independently and allow highly precise measurement of CO2 and H2O.


  • Simultaneous carbon dioxide and water determination with minimal sample preparation
  • Rapid, precise, accurate and reliable element determination
  • Wide range of materials can be analyzed
  • Resistance furnace temperature can be set up to 1000 °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 containing samples
  • Powerful software (multilingual, customized display, export of results)
  • Single and multi-point calibration
  • No halogen trap required
  • Electronic gas flow control
  • Low maintenance
  • Robust design allows usage in production control and laboratory


Cement, gypsum, limestone, minerals, ores, soil, etc

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Measured elements carbon dioxide, water
Furnace alignment horizontal
Sample carrier quartz boats
Field of application construction materials, environment /
recycling, geology / mining
Furnace resistance furnace with quartz tube,
adjustable up to 1000 °C
Process of measurement fixed temperature, fixed carrier gas,
no changing during measurement
Detection method solid state infrared absorption
Number of IR cells 01-Feb
Material of IR path gold
Typical analysis time 2 – 3 min
Chemicals required magnesium perchlorate, sodium
Gas required nitrogen 99.995 % pure (2 – 4 bar /
30 – 60 psi)
Power requirements 230 V, 50/60 Hz, max. 10 A, 2300 W
Dimensions (W x H x D) 55 x 80 x 60 cm
Weight ~ 65 kg
Required equipment balance (resolution 0.0001g),
monitor, PC
Optional accessories voltage stabilizer 5 KVA

Download Data Sheet: Carbon / Water Analyzer CW-800

Ref: eltra.com