Eltra Carbon / Water Analyzer CW-800

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 a 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
  • A 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 a 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, the export of results)
  • Single and multi-point calibration
  • No halogen trap required
  • Electronic gas flow control
  • Low maintenance
  • The robust design allows usage in production control and laboratory


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

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Measured elementscarbon dioxide, water
Furnace alignmenthorizontal
Sample carrierquartz boats
Field of applicationconstruction materials, environment /
 recycling, geology/mining
Furnaceresistance furnace with quartz tube,
 adjustable up to 1000 °C
Process of measurementfixed temperature, fixed carrier gas,
 no changing during the measurement
Detection methodsolid state infrared absorption
Number of IR cells1 -2
Material of IR pathgold
Typical analysis time2 - 3 min
Chemicals requiredmagnesium perchlorate, sodium
Gas requirednitrogen 99.995 % pure (2 - 4 bar /
 30 - 60 psi)
Power requirements230 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 equipmentbalance (resolution 0.0001g),
 monitor, PC
Optional accessoriesvoltage stabilizer 5 KVA

Download Data Sheet: Carbon / Water Analyzer CW-800

Ref: eltra.com