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Category: LI-8100A

LI-8100A Automated Soil CO2 Flux System

Changes to LI-8100A Wireless Communication

Changes to LI-8100A Wireless Communication

Wireless communication is an excellent way to use the LI-8100A Automated Soil Gas Flux System in the field to start and stop logging, and view the data in real time. For wireless communication, the system has always relied on a peer-to-peer connection using a Cisco wireless card inserted into one of the PC card slots in the LI-8100A Analyzer Control Unit. Apple iOS devices, like the Windows Mobile and PALM devices before them, were able to easily connect using peer-to-peer networking.

However,…

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Troubleshooting RS-232 Connectivity Issues for LI-COR Analyzers

Troubleshooting RS-232 Connectivity Issues for LI-COR Analyzers

Many LI-COR gas analyzers feature RS-232 communication ports, and sometimes these are the only communication channels available between the gas analyzer and a computer. Many new computers don’t have built-in serial ports, so USB-to-serial adapters are needed to facilitate this communication process. Communication problems between gas analyzer and windows interface software can happen due to issues with the USB to serial adapter or due to the lack of compatibility between the instrument firmware version and the windows interface software version. Terminal…

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Elizabethtown College Finds Novel Ways to Use Instruments for Classes and Research

Elizabethtown College Finds Novel Ways to Use Instruments for Classes and Research

Have you ever found yourself wishing that a fiction writer had a better grasp of scientific concepts? Dr. David Bowne at Elizabethtown College in Pennsylvania is doing his part to solve this problem—one student at a time—with a class called Ecology in Short Fiction. By providing literature students with experience with the LI-8100 Automated Soil CO2 Flux System, Dr. Bowne and his co-teacher Dr. Matt Skillen make ecological concepts meaningful to students in the context of fiction literature.

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LI-820, LI-840/A, LI-8100/A, and terrible, horrible, no good, very bad data

LI-820, LI-840/A, LI-8100/A, and terrible, horrible, no good, very bad data

There are four common causes for bad readings on LI-8xxx instruments:

  1. Incorrect zero and span calibration parameters.
  2. IR light source that is failing or has failed.
  3. Contamination (dirt, corrosion, liquids) in the optical path.
  4. Failed detector.

1)  Incorrect zero and span calibration parameters:

Check these values using the LI-COR interface software for each instrument by going to:

For LI-820 and LI-840, LI-840A: View – Calibration – Advanced

For the LI-8100, LI-8100A: Utilities…

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All About Timing! Determining Measurement Duration for Soil Flux Measurements

All About Timing! Determining Measurement Duration for Soil Flux Measurements

The LI-8100A SoilFluxPro™ software provides a tool to analyze the effect of observation length on measured flux values. The LI-8100A Automated Soil CO2 Flux System can be set up with varying measurement settings to account for the specific measurement conditions. A typical survey or long-term measurement consists of an observation length of 1.5 to 2.5 minutes, and a deadband of 20-30 seconds. However, these typical settings should be optimized for the specific measurement. This is especially true for measurements of…

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