LI-840 CO₂/H₂O Gas Analyzer: For Continuous Monitoring of CO₂ and H₂O

Specifically designed for continuous monitoring of CO₂ and H₂O over a wide range of environmental conditions, the LI-840 is an absolute, non-dispersive, infrared (NDIR) gas analyzer based on a single, interchangeable optical path, and a dual wavelength infrared detection system.

Why the LI-840?

• The only gas analyzer in the world that can measure CO₂ and H₂O simultaneously using NDIR technology at this price range

• High accuracy due to automatic temperature and pressure compensation

• High stability with low zero and span drift

• CO₂ corrected for band broadening due to presence of water vapor

• Sensitivity to water vapor is < 0.1 ppm CO₂/ppt H₂O

• Optical path that can be easily cleaned by the user (cleaning kit included with the LI-840) without requiring factory recalibration

• An optical bench provides CO₂ measurement range of 0-3000 ppm and an H₂O measurement range of 0-80 ppt

• < 1 ppm signal noise at 370 ppm for CO₂ and < 0.01 ppt at 10 ppt for H₂O

• Wide operating temperature range of -20 to +45 °C

• Compact, lightweight design with low power consumption

• Maximum flow rate of 1 liter/minute