8200-104 Opaque Long-Term Chamber

The 8200-104 Opaque Long-Term Chamber builds on the trusted and patented technology from the previous generation. This line of long-term chambers withstands the elements with improvements to the design. The 8200-104 accepts industry standard SDI-12 connections to include the sensors and measurements you want at each chamber.

A motorized chamber finished in durable and reflective white enamel rotates away from your soil collar. This allows the soil in the collar to see natural environmental conditions when a measurement is not taking place. The chamber may be left unattended for extended periods of time to make automated measurements, with low power draw (7.5W maximum when opening or closing).

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How are LI-COR chambers different?

The 8200-104 Opaque Long-Term Chamber and all LI-COR chambers have been carefully and intentionally designed to minimize their impact on the natural soil activity with consideration toward:

  • Maintaining chamber pressure with ambient air.
  • Achieving air mixing without a fan.
  • Accounting for the impact of altered diffusion gradient on the flux.
  • Minimizing the impact of the chamber on your soil environment.
Learn more about the science and engineering behind the 8200-104 Opaque Long-Term Chamber.
8200-104 Chamber


  • Dimensions: 48.3 cm L × 38.1 cm W × 33.0 cm H
  • Weight: 7.3 kg
  • Chamber Volume: 3955 cm3
  • Soil Area Exposed: 317.8 cm2
  • Weatherproof Rating: Tested to IEC IP55 standard
  • Air Temperature Thermistor:
    • Operating Range: -20 to 50 °C
    • Accuracy: ±0.3 °C from -20 to 50 °C
  • Light Sensor Current Input:
    • Range: 0 to 100 µA
    • Resolution: 1.5 nA
    • Accuracy: ±(0.37 % of Reading + 8 nA) from -20 to 50 °C
  • SDI-12 Communications Interface:
    • Max Number of Devices: 10
    • Output Voltage: 12 VDC, 200 mA

Specifications subject to change without notice.

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