Collect survey, long-term, and multiplexed measurements and evaluate the temporal and spatial variation of your fluxes with confidence. The LI-8100A Analyzer Control Unit and LI-8150 Multiplexer provide durable and consistent performance while the unique design of LI-COR chambers is optimized for reducing the interference of the chamber with natural soil activity, allowing for the interaction of gases, water, and sunlight with the soil inside the collar.
LI-8100A Analyzer Control Unit
The LI-8100A is a portable, automated system that enables you to simply and reliably conduct survey and long-term measurements over a study site using the 10cm or 20cm survey chambers or clear or opaque long-term chambers. The LI-8100A with a long-term chamber is ideal for assessing the temporal variability of CO2 flux at a study site. The analyzer control unit contains an infrared gas analyzer and a connection panel to interface with long-term chambers, additional gas analyzers, and the LI-8150 multiplexer.
Whether you choose a single chamber or multiplexed long-term configuration, the chambers can make all the difference between dependable, reproducible data and questionable results. LI-COR chambers are designed with a perforated base and patented pressure vent to preserve the integrity of your measurement.
Opaque Long-Term Chamber
The opaque long-term chamber (8100-104) is finished in durable, highly reflective white enamel. Rotating away from the soil collar, the motorized chamber allows for autonomous measurements in the field over long periods of time minimizing disturbance to the soil surface inside the collar.
Clear Long-Term Chamber
The clear chamber (8100-104C) is designed for long-term net carbon exchange measurements. It features a durable, clear chamber top so that plants are exposed to sunlight during measurements.
LI-COR long-term chambers were specifically developed to allow for the natural exchange of gas, sunlight, and rain between the atmosphere and soil surrounding the chamber, minimizing the effect of the deployment of soil chambers.
The LI-8150 Multiplexer provides the ability to measure the gas exchange from multiple long-term chambers, providing a large sample size that allows you to determine spatial and temporal flux rates with confidence. Capable of running autonomously for months, the LI-8150 system collects a continuous dataset from up to 16 chambers to characterize spatial and temporal variation in gas exchange over a research area. By integrating additional gas analyzers like the LI-7810 CH4/CO2/H2O Trace Gas Analyzer, long-term and multiplexed systems also support methane fluxes while third-party gas analyzer integration provides support for fluxes of isotopologues and other gases.
The LI-8150 Multiplexer enables you to collect a large sample size and characterize gas exchange for a study area or from treatment and control groups. A large sample size and long-term measurements help you characterize the flux much better than a single measurement. Continuous, long-term measurements help characterize diurnal and seasonal patterns.
Supports any combination of clear and opaque chambers.
Ideal for assessing both spatial and temporal variability of soil gas flux.
With the 8100-104C Clear Chamber, you can measure net carbon exchange (NCE), which is a key variable for understanding the carbon balance of an ecosystem. NCE is the gross primary production minus the ecosystem respiration. The clear chamber enables vegetation under the chamber to continue photosynthesis during a measurement. LI-8100-NCE packages are available in both single-chamber and multi-chamber configurations.
The LI-8100A and LI-8150 Multiplexer combination can be used to do atmospheric CO2 profiling with the Profiling Kit (part number 8150-662). The system can record up to 16 points in either horizontal or vertical gas profiles. It is compatible with many external trace gas analyzers to measure profiles of N2O, CH4, and other gas concentrations. In this configuration, the system controls sampling of each inlet and records data according to your settings.
LI-COR soil gas flux systems can easily convert into a flask sampling system that measures gas exchange from samples contained in flasks or other containers.
Measure CO2 or CH4 exchange in sample containers
Ideal for respiration from fruit, soil cores, or insects
Measure up to 16 flasks simultaneously
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 interface with the LI-8100A long-term chambers (8100-104/104C) 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 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.
Trace Gas Sampling Kit
The Trace Gas Sampling Kit (part number 8100-664) is a simple add-on to the LI-8100A System and 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.
Have an LI-8100A and Need Survey Chambers?
The LI-8100A and 8100-102 and 8100-103 10 cm and 20 cm survey chambers are still available. See Ordering Information or contact a sales representative to discuss your options.
Control the LI-8100A for long-term or multiplexed measurements directly from your iPhone®, iPad®, or iPod® Touch. Uses Wi-Fi for local connection to any LI-8100A Analyzer Control Unit with a wireless access point device.
The Android App allows you to control the LI-8100A for long-term and multiplexed measurements of soil gas flux from most 32-bit Android devices. Uses Wi-Fi for local connection to any LI-8100A Analyzer Control Unit with a wireless access point device.