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Measure Trace Gas Flux with the LI-8100A

The LI-8100A provides a variety of ways to measure trace gas flux, including the optional trace gas sampling kit or integrating an external trace gas analyzer. Regardless of which method you use, chambers can make all the difference between dependable, reproducible data and questionable results. LI-COR chambers feature patented technology that maintains ambient pressure in the chamber during a measurement. The chambers also minimize disturbance to the soil around the chamber and ensure that sample air is well mixed inside the chamber.

Integrate an External Trace Gas Analyzer

Combine the proven LI-8100A chambers and an external trace gas analyzer to create datasets that are easy to process with SoilFluxPro™ Software. In this configuration, you can take advantage of the sophisticated LI-8100A chambers and advanced data processing capabilities of SoilFluxPro Software to compute fluxes of trace gas species. This arrangement can be used in both single-chamber and multiplexed configurations.

LI-8100A and Picarro gas analyzer integration image of LI-8100A ghg flux integration tech note

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Capturing and Processing Soil GHG Fluxes Using the LI-8100A

Contact us to learn more about soil gas flux measurements that combine the LI-8100A with trace gas analyzers such as the LGR Ultraportable Greenhouse Gas Analyzer, Picarro G2508, or other analyzers.

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LI-8100A and LGR gas analyzer integration

Trace gas sampling kit

trace gas sampling kit in use

The trace gas sampling kit is a simple add-on to the LI-8100A system. It can be used with single chamber or multiplexed configurations to collect subsamples from the gas sampling tubes. By analyzing the gas concentrations of the subsamples, you can compute the flux rate of trace gas species using linear or exponential regression analysis.

The sampling kit allows you to take advantage of the sophisticated LI-8100A chambers to measure fluxes of N2O, CH4, or isotopic species, without the need to install a laboratory gas analyzer in a field setting.

image of LI-8100A ghg flux integration tech note

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Using the LI-8100 System to Collect Air Samples for Estimating Soil Trace Gas Flux

Chamber Control Kit: Build Your Own Trace Gas Flux System with LI-8100A Chambers

If you’re technically inclined and wish to develop your own datalogger, system controller, and data processing software, the chamber control kit provides all the hardware you need to control the LI-8100A chambers with a Campbell® Scientific datalogger or Arduino electronics platform while an external gas analyzer measures gas concentrations.

This arrangement combines the careful design of LI-8100A chambers, SoilFluxPro Software computations, and the trace gas analyzer measurements to create a versatile system for soil gas flux measurements. The chamber control kit (part number 8100-401) includes soil temperature and humidity sensors to provide data on soil conditions. In this configuration, you’ll have to program the controller, log the data, and process the datasets.

image of LI-8100A ghg flux integration tech note

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Using LI-COR Automated Soil Gas Flux Chambers with a Custom Interface

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