LI-870 CO₂/H₂O Gas Analyzer

With dimensions of approximately 28.4 × 27.9 × 12.4 cm and a weight of only 2.31 kg, the LI-870 packs robust performance into a compact package. It uses non-dispersive infrared (NDIR) technology to measure CO₂ up to 20,000 ppm and H₂O up to 60 mmol mol⁻¹ at a measurement rate of 1 Hz. The weather-proof enclosure, low power consumption (~4–5 W after warm-up), and compatibility with field systems such as the Smart Chamber or multiplexer make it a reliable choice for field deployment.

Key Features

• CO₂ measurement range: 0–20,000 ppm

• H₂O measurement range: 0–60 mmol mol⁻¹

• Accuracy for both CO₂ and H₂O: within 1.5% of reading

• Measurement rate: 1 measurement per second (1 Hz)

• Lightweight and portable (2.31 kg)

• Low power consumption: ~4 W (without pump) / ~5 W (with pump)

• Operational in ambient temperature range of –20 °C to 45 °C and humidity up to 95% RH (non-condensing)

• Rugged design for outdoor use, including soil-gas flux studies

Applications

• Soil CO₂ gas flux research and environmental monitoring

• Survey and long-term deployment in field conditions

• Ecosystem respiration studies and carbon cycle investigations

• Integration into automated soil flux chamber systems

• Portable field measurements and academic research