The LI-870 CO₂/H₂O Analyzer is a versatile analyzer for publication quality data that is simple to deploy, use, and maintain. A combination of precision and stability alongside a rugged and fieldable design makes it ideal for survey and long-term research focused on fluxes of soil CO₂.

LI-870 Advantages

The LI-870 delivers rapid CO₂ flux measurements with great precision while being light enough (2.31 kg) to carry all day without wearing you out. The LI-870 maintains that same speed and precision even when tasked with making long-term measurements in harsh conditions.

The LI-870 has low power requirements (5W average with pump after warmup) and is powered by the Smart Chamber for survey measurements or the LI-8250 Multiplexer in a long-term system. The weatherproof case houses the weather, dust, and splash resistant components with a user-serviceable optical bench that does not require factory recalibration.

Specifications

General

• Dimensions: 28.4 cm L × 27.9 cm W × 12.4 cm H
• Weight: 2.31 kg
• Measurement Rate: 1 measurement per second (1 Hz)
• Operating Range:
  • Temperature: –20 to 45 °C, without solar loading
  • Humidity: 0 to 95% RH, non-condensing
  • Pressure: 50 to 110 kPa
• Measurement Principle: Non-dispersive infrared (NDIR)
• Flow Rate (nominal): 0.75 liters min^-1

Power

• Input Voltage: 10 to 17 VDC, 2 A max
• Power Source: 8200-01S Smart Chamber or LI-8250 Multiplexer
• Power Consumption:
  • After Warmup (without pump): 0.33 A @ 12 VDC (4.0 W) average
  • After Warmup (with pump): 0.42 A @ 12 VDC (5.0 W) average

CO₂ Measurements

• Measurement Range: 0 to 20,000 ppm
• Accuracy: Within 1.5% of reading

H₂O Measurements

• Measurement Range: 0 to 60 mmol mol^-1
• Accuracy: Better than 1.5% of reading

Specifications subject to change without notice.

For more information on this equipment, contact us.