Trace Gas Analyzers

LI-7810

When methane matters most

The LI-COR LI-7810 CH4/CO2/H2Trace Gas Analyzer provides exceptionally stable and precise methane measurements in a design that is both surprisingly portable and affordable. CH4 measurements drift less than 1 ppb per 24-hour period with 0.25 ppb precision (1σ, with 5-second averaging) at 2000 ppb CH4 in dry air at STP.

Achieve the long-term stability and precision needed for atmospheric monitoring, with the flexibility of design for deployments in mobile monitoring or soil flux research.

Exceptionally stable and precise measurements

When methane matters the most, the LI-7810 provides CH4 measurements with high precision and stability and good CO2 and water vapor measurements.

LI-7810 Long-Term Outdoor CH4 Stability

LI-7810 Long-Term Outdoor CH4 Stability
Figure 1. Thirty-day methane stability data from an LI-7810 CH4/CO2/H2O analyzer deployed in an enclosed shelter at an outdoor monitoring site in Lincoln, Nebraska. The instrument was operated continuously over the entire time period. The analyzer measured ambient air between stability checks. During stability checks, the analyzer was flushed for 10 minutes with tank gas (2 ppm CH4, 400 ppm CO2 mixed in air balance, 1% nominal concentration accuracy) and a time series data set was subsequently recorded for 10 minutes every 12 hours. The figure shows the mean value of the 10-minute measurements. Error bars represent a 1σ confidence interval (68%).

LI-7810 7-Day CH4 Precision with Allan Deviation Plot

LI-7810 7-Day CH4 Precision with Allan Deviation Plot
Figure 2. Seven-day CH4 stability data from an LI-7810 CH4/CO2/H2O analyzer (top). A single instrument was operated continuously over a 7-day period with a continuous flow of tank gas. The light blue line shows 1-second measurements; the dark blue line shows a 50-minute block average. Allan deviation plot (bottom) of CH4 measurements from an LI-7810 measuring mixture of 1970.7 ppb methane and 387.5 ppm CO2 shows precision at 1-second signal averaging, with improved precision as averaging time increases. Error bars represent 68% (±1σ) confidence intervals based on number of averaged time series available at each τ.

Key specifications
General
Total Weight: 10.5 kg (including batteries)
Battery Life: 8 hours typical with 2 batteries
CH4 Measurements
Response Time (T10-T90): all from 0 to 2 ppm≤ 2 seconds in Standard Configuration
≤ 3 seconds in High Altitude Configuration
Range: 0 to 100 ppm
Precision (1σ):0.60 ppb at 2 ppm with 1 second averaging
0.25 ppb at 2 ppm with 5 second averaging
Maximum Drift: < 1 ppb per 24-hour period

Choosing your analyzer

The LI-7810 Trace Gas Analyzer is ideal for applications that require long-term CH4 monitoring, or where precision and stability over time is critical. The LI-7810 is also able to provide a CO2 measurement. The CO2 measurements provided by the LI-7810 are appropriate for chamber-based CO2 flux measurements, such as with the Smart Chamber. Learn more about using the LI-7810 for soil gas flux here.

For applications that demand long-term CO2 monitoring and exceptionally precise and stable CO2 measurements, consider the LI-7815.

The LI-7810 is not designed for eddy covariance applications—which requires higher frequency measurements, but as a closed path analyzer it can be used for pCH4 measurements. If you need higher frequency measurements for the eddy covariance method, consider our eddy covariance solutions.

LI-7810 CH4_CO2_H2O Trace Gas Analyzer

LI-COR LI-7810 Trace Gas Analyzers for CH4/CO2/H2O | For more information, contact us.

Brochure

Trace Gas Analyzers

Trace Gas Analyzers

Field guide to instruments for the earth sciences

Field guide to instruments for the earth sciences

Posters

Trace Gas Poster icon

Development of Trace Carbon Dioxide Isotopologue Analyzer – Performance Evaluation Study

Long-Term TGA Measurements at Mace Head, Ireland

Long-Term Atmospheric Monitoring of Background CH4 and CO2 at Mace Head Atmospheric Research Station, Ireland Using LI-COR LI-7810 and LI-7815 Trace Gas Analyzers

TGA Urban N2O Soil poster

How do soil temperature and moisture regulate N2flux from an urban lawn?

TGA OF-CEAS poster

Measuring Very Small Soil Fluxes of N2CH4 Using a New OF-CEAS Technology

Trace Gas Poster icon

Development of Trace Methane and Trace Carbon Dioxide Analyzers – Performance Evaluation Studies, GCWerks Integration, and Results of Field Deployment

Trace Gas Poster icon

Performance validation of new high precision CH4 and CO2 analyzers based on optical feedback cavity enhanced absorption spectroscopy

Trace Gas Poster icon

Methane and Carbon Dioxide Measurements with New High-Precision Low-Power Low-Maintenanace Closed-Path Analyzers: First Lab and Field Results

Trace Gas Poster icon

Chamber-based Soil Methane Flux Measurement

Trace Gas Poster icon

Measuring CH4 and CO2 with New Generation High-Precision Low-Power Low-Maintenance Closed-Path Analyzers: Lab and Field Results

Features

What makes LI-COR different?

LI-COR offers hardware, software, and analyzers that are based on extensive scientific research and testing. Patented designs minimize disruption of natural soil gas transport across the soil surface and record high-precision flux measurements to evaluate spatial and temporal variability.

Together, this integrated system provides an entirely comprehensive research solution for measuring large- and small-scale events—including CO2, CH4, or N2greenhouse gas emissions.

Designed for flexibility and convenience

LI-COR soil gas flux systems combine more than 20 years of experience with the latest innovations for flexibility and convenience.

LI-COR Soil Flux System with Smart Chamber, LI-8250 Multiplexer, LI-7810 Trace Gas Analyzer and LI-870 Gas Analyzer.
LI-7820 N2O/H2O Trace Gas Analyzer taking a survey measurement

Tailored for dependable practicality

Each LI-COR gas analyzer is portable, durable, and simple to deploy—allowing you to take CO2CH4, and N2survey and long-term measurements with ease.

Engineered to reduce artificial impact

The importance of soil gas flux chambers to take accurate measurements is often underestimated. An inherent challenge to chamber design is the influence the chamber may have on measurements.

All LI-COR chambers are designed to minimize chamber interference on the natural soil gas flux, and gas production and consumption, leading to accurate, consistent measurements.

LI-COR soil chambers reduce artificial impact
SoilFluxPro Screenshot

SoilFluxPro Software

SoilFluxPro Software simplifies the management and processing of large soil gas flux datasets. SoilFluxPro is powerful, free software included with LI-COR soil gas flux solutions. View, revise, and recompute flux data, get advanced guidance on deadband and stop time, perform quality assurance and quality control, and much more.

Brochure

Trace Gas Analyzers

Trace Gas Analyzers

Field guide to instruments for the earth sciences

Field guide to instruments for the earth sciences

Posters

Trace Gas Poster icon

Development of Trace Carbon Dioxide Isotopologue Analyzer – Performance Evaluation Study

Long-Term TGA Measurements at Mace Head, Ireland

Long-Term Atmospheric Monitoring of Background CH4 and CO2 at Mace Head Atmospheric Research Station, Ireland Using LI-COR LI-7810 and LI-7815 Trace Gas Analyzers

TGA Urban N2O Soil poster

How do soil temperature and moisture regulate N2flux from an urban lawn?

TGA OF-CEAS poster

Measuring Very Small Soil Fluxes of N2CH4 Using a New OF-CEAS Technology

Trace Gas Poster icon

Development of Trace Methane and Trace Carbon Dioxide Analyzers – Performance Evaluation Studies, GCWerks Integration, and Results of Field Deployment

Trace Gas Poster icon

Performance validation of new high precision CH4 and CO2 analyzers based on optical feedback cavity enhanced absorption spectroscopy

Trace Gas Poster icon

Methane and Carbon Dioxide Measurements with New High-Precision Low-Power Low-Maintenanace Closed-Path Analyzers: First Lab and Field Results

Trace Gas Poster icon

Chamber-based Soil Methane Flux Measurement

Trace Gas Poster icon

Measuring CH4 and CO2 with New Generation High-Precision Low-Power Low-Maintenance Closed-Path Analyzers: Lab and Field Results

Related Products

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The LI-7700 is designed specifically for eddy covariance flux measurements to evaluate methane emissions from the terrestrial landscape.
The 8200-104 Opaque Long-Term Chamber accepts industry standard SDI-12 connections to include the sensors and measurements you want at each chamber.
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LI-7810
Trace Gas Analyzers
LI-7810
Trace Gas Analyzers