Open Path CO2/H2O Analyzer

LI-7500DS

The new LI-7500DS analyzer delivers the performance and dependability of previous LI-7500 models, in a streamlined, lower cost configuration with even lower power requirements.

The LI-7500DS LI-COR LI-7500DS Open Path CO2/H2O Analyzer is designed for high-speed CO2 and water vapor measurements in ambient air. Lower power and maintenance requirements make it ideal for field deployments.

low power icon

Requiring only 4 watts during normal operation, the LI-7500DS features lower power demands than any other EC gas analyzer available. It is ideal for deployment in remote areas where power is limited.

omnidirectional sampling icon

Omnidirectional sampling provides versatile installation options and continuous data coverage.

data set icon

Logs complete eddy covariance data sets—including wind speed measurements from a sonic anemometer and supporting meteorological, radiation, and soil data from a LI-COR Biomet System.

SmartFlux System version 3

Now includes the SmartFlux® System

The SmartFlux® System runs EddyPro® Software on a powerful microcomputer to compute final flux results as data are logged. It delivers the same dependable results you get from EddyPro Software on a desktop computer, only computed in real time at the site.

SmartFlux is ready to connect with  FluxSuite® Software — to put your eddy covariance system online. In FluxSuite, you can view results, get email notifications, and check the performance of your instruments from a computer and smartphone.

The LI-7500DS instrument

Miniaturized electronics and simplified hardware make the LI-7500DS easier to use. This compact instrument delivers high-speed measurements and precision needed for flux measurements. Designed for long-term deployment, the LI-7500DS improves upon a proven platform.

LI-7500DS detail

1

Ambient air temperature measurements at the optical path.

2

Temperature controlled optics and detector provide stable measurements—even in wide temperature fluctuations.

3

Precision optical components reduce sensitivity to contamination in dusty environments.

4

Scratch-resistant sapphire lenses for simple cleaning in the field.

5

High-performance brushless chopper motor provides dependable long-term operation.

Get a Quote

How it works

The LI-7500DS uses non-dispersive infrared spectroscopy to measure CO2 and water vapor densities in air.

Infrared radiation is transmitted through temperature-controlled optical filters, then through the open sample path to a thermally regulated lead selenide detector. Some of the infrared radiation is absorbed by CO2 and water vapor in the sample path. Gas densities are computed from the ratio of absorbed radiation to a reference.

From the arctic tundra to the arid deserts, the LI-7500DS is designed for the most demanding environments.

Long-term stability and drift resistance

The accumulation of dust, pollen, chemical residues, and other contaminants on optics of open-path gas analyzers can lead to measurement drift and cause gaps in datasets. Typically, this is not a problem when an instrument is regularly maintained. If an instrument is not maintained, however, there is risk that this accumulation will affect measurements.

Innovations to the optics and electronics ensure that the LI-7500DS collects more accurate and dependable data—even as contaminants begin to accumulate on the optics.

Experimental data from 13 instruments at numerous sites with a wide range of contamination levels consistently show that the optical filters in the LI-7500DS provide significantly more stable measurements than the optical filters in the LI-7500A. Figures 1 and 2 show contamination-related drift data from an urban site adjacent to heavy road traffic.

Day of ExperimentMeasurement Drift (CO2 umol mol-1)Click and drag to zoom in. Hold down shift key to pan.Original LI-7500ALI-7500RS (Same optics as new LI-7500DS)051015202530354045-25-20-15-10-5051015Figure 1. CO2 measurements from three LI-7500RS analyzers (which use the same optics as the LI-7500DS) and three LI-7500A analyzers (average and spread). The y-axis shows the deviation from a control reference. CO2 measurements from the LI-7500RS analyzers drifted considerably less and had smaller instrument-to-instrument variability than those from the original LI-7500A models. Data show the typical improvement expected from the LI-7500RS analyzer.

Day of ExperimentMeasurement Drift (H2O mmol mol-1)Click and drag to zoom in. Hold down shift key to pan.Original LI-7500ALI-7500RS (Same optics as new LI-7500DS)051015202530354045-101234Figure 2. Water vapor measurements from three LI-7500RS analyzers (which use the same optics as the LI-7500DS) and three LI-7500A analyzers (average and spread). The y-axis shows the deviation from a control reference. Measurements from the LI-7500RS analyzers drifted several times less, and had smaller instrument-to-instrument variability when compared with original LI-7500A models.

Minimized flow distortion

In eddy covariance systems, airflow distortion can occur when a gas analyzer is inside of, or too close to, the sonic anemometer path. If the gas analyzer is too close, it can disrupt airflow before wind enters the anemometer, leading to errors in the computation. If it is too far away, the instruments will sample different eddies, which also leads to errors.

Specifications

CO2 Measurements

    • Calibration Range: 0 to 3000 µmol mol-1
    • Accuracy: Within 1% of reading
    • Zero Drift(per °C):
      • ±0.1 ppm typical
      • ±0.3 ppm maximum
    • RMS Noise (typical @ 370 ppm CO2):
      • @5 Hz: 0.08 ppm
      • @10 Hz: 0.11 ppm
      • @20 Hz: 0.16 ppm
    • Gain Drift (% of reading per °C @ 370 ppm):
      • ±0.02% typical
      • ±0.1% maximum
    • Direct Sensitivity to H2O (mol CO2 mol-1 H2O):
      • ±2.00E-05 typical
      • ±4.00E-05 maximum

H2O Measurements

    • Calibration Range: 0 to 60 mmol mol-1
    • Accuracy: Within 1% of reading
    • Zero Drift (per °C):
      • ±0.03 mmol mol-1 typical
      • ±0.05 mmol mol-1 maximum
    • RMS Noise (typical @ 10 mmol mol-1 H2O):
      • @5 Hz: 0.0034 mmol mol-1
      • @10 Hz: 0.0047 mmol mol-1
      • @20 Hz: 0.0067 mmol mol-1
    • Gain Drift (% of reading per °C @ 20 mmol mol-1):
      • ±0.15% typical
      • ±0.30% maximum
    • Direct Sensitivity to CO2 (mol H2O/mol CO2):
      • ±0.02 typical
      • ±0.05 maximum

General

  • Fundamental Gas Sampling Rate: 150 Hz
    • Bandwidth: 5, 10, or 20 Hz; software selectable
    • Type: Absolute, open-path, non-dispersive spectroscopy
  • Detector: Thermoelectrically cooled lead selenide
    • Path Length: 12.5 cm (4.92″)
  • Air Temperature Thermistor: 10K ohm @ 25 °C thermistor
    • Measurement Range: -40 to 70 °C
    • Sensor Accuracy: ±0.25 °C from -20 to 70 °C
    • Resolution: 0.003 °C @ 25 °C
  • Pressure Sensor:
    • Measurement Range: 20 to 110 kPa
    • Sensor Accuracy: ±0.4 kPa from 50 to 110 kPa
    • Resolution: 0.006 kPa
  • Outputs: Ethernet
  • Operating Temperature Range: -25 to 50 °C (-40 to 50 °C verification on request)
  • Relative Humidity Range: 0-95% (non-condensing)
  • Weatherproof Rating: Tested to IEC IP65 standard user
  • Interface: Windows® PC software
  • Power Requirements: 10.5 to 30 VDC
  • Steady-State Power Consumption: 4 W typical at 25 °C
    8 W max over operating range of -25 to 50 °C
  • Head:
    • Size: Diameter 6.5 cm, Length 30 cm
    • Weight: 0.67 kg; 1.3 kg with mounting post
    • Head Cable Length: 200 cm
  • DSI Box:
    • Size: 13.24 × 14.64 × 6.24 cm (H × W × D)
    • Weight: 0.93 kg

Specifications subject to change without notice.

For more information, contact us.

LI-7500DS Open Path CO2_H2O Analyzer

Publications and Posters

See publications that use LI-COR eddy covariance analyzers.

Get the Publications List

Posters

Using Flux Measurements for Immediate Societal Benefits
Burba, G., 2022. Using Flux Measurements for Immediate Societal Benefits. American Geophysical Union Fall Meeting, Chicago, Illinois, 12-16 December.

2155 Past & Present Eddy Covariance Measurement Locations, & Still Counting
Burba G., 2019. Illustrative Maps of Past and Present Eddy Covariance Measurement Locations: II. High-Resolution Images. Retrieved August 6, 2019, www.researchgate.net 9 pp. DOI: 10.13140/RG.2.2.33191.70561

Tovi, New Software for Flux Data Analysis: from Gap Filling to Flux & Footprint Partitioning
G. Burba, I. Begashaw, A. Forgione, N. Franken, F. Griessbaum, P. Isaac, D. Johnson, J. Kathilankal, A. McQuistan, A. Parkinson, M. Sun, A. Templeton, L. Woodford, and G. Fratini, 2019. Tovi, New Software for Flux Data Analysis: from Gap Filling to Flux & Footprint Partitioning. European Geosciences Union General Assembly, Vienna, Austria, 07-12 April.

Eddy Covariance flux errors due to synchronization issues during data acquisition
Gerardo Fratini, Simone Sabbatini, Kevin Ediger, Brad Riensche, George Burba, Giacomo Nicolini, Domenico Vitale, and Dario Papale, 2019. Eddy Covariance flux errors due to synchronization issues during data acquisition. European Geosciences Union General Assembly, Vienna, Austria, 07-12 April.

Investigation on the Importance of Fast Air Temperature Measurements in the Sampling Cell of Short-Tube Closed-Path Gas Analyzer for Eddy Covariance Fluxes
James Kathilankal, Gerardo Fratini, George Burba, 2014. American Geophysical Union Fall Meeting, San Francisco, California, 15-19 December.

A New Tool for Automated Data Collection and Complete On-Site Flux Data Processing for Eddy Covariance Measurements
Israel Begashaw, James Kathilankal, Jiahong Li, Kevin Beaty, Kevin Ediger, Antonio Forgione, Gerardo Fratini, David Johnson, Michael Velgersdyk, Liukang Xu, George Burba, 2014. American Geophysical Union Fall Meeting, San Francisco, California, 15-19 December.

Direct Continuous Measurements of Methane Emissions From a Landfill
George Burba, Liukang Xu, Xiaomao Lin, Jim Amen, Karla Welding, Dayle McDermitt, 2014. American Geophysical Union Fall Meeting, San Francisco, California, 15-19 December.

Expanding Spatial and Temporal Coverage of Arctic CH4 and CO2 Fluxes
Patrick Murphy, Walter Oechel, Virginie Moreaux, Salvatore Losacco, and Donatella Zona, 2013. American Geophysical Union Fall Meeting, San Francisco, California, 9-12 December.

Efficacy of Using Eddy Covariance Method for Gas and Energy Flux measurements in Disciplines and Applications beyond Micrometeorology.
Burba, G., and D. Anderson, 2011. Efficacy of Using Eddy Covariance Method for Gas and Energy Flux measurements in Disciplines and Applications beyond Micrometeorology. European Geosciences Union General Assembly, Vienna, Austria, 03-06 April. Submitted

Combining the strengths of open-path and closed-path designs into a single CO2/H2gas analyzer
Burba, G., M. Furtaw, D. McDermitt, and R. Eckles, 2009. Combining the strengths of open-path and closed-path designs into a single CO2/H2gas analyzer. American Geophysical Union Fall Meeting, San Francisco, California, 14-18 December.

Solution for Minimizing Surface Heating Effect for Fast Open-path CO2 Flux Measurements in Cold Environments
Burba, G., D. McDermitt, J. Hupp, D. Anderson, and R. Eckles, 2010. Solution for Minimizing Surface Heating Effect for Fast Open-path CO2 Flux Measurements in Cold Environments. American Geophysical Union Fall Meeting, San Francisco, California, 13-17 December.

Calculating CO2 and H2Eddy Covariance Fluxes from Low-power Gas Analyzer Using Fast Mixing Ratio
Burba, G., A. Schmidt, R. Scott, J. Kathilankal, B. Law, D. McDermitt, D. Anderson, R. Eckles, M. Furtaw, and M. Velgersdyk, 2010. Calculating CO2 and H2Eddy Covariance Fluxes from Low-power Gas Analyzer Using Fast Mixing Ratio. American Geophysical Union Fall Meeting, San Francisco, California, 13-17 December.

Eddy Covariance Measurements of Methane Flux at Remote Sites with New Low-Power Lightweight Fast Gas Analyzer
Burba, G., L. Xu, J. Schedlbauer, D. Zona, T. Anderson, D.K. McDermitt, S. Oberbauer, W. Oechel, A. Komissarov, and B. Riensche, 2010. . European Geosciences Union General Assembly, Vienna, Austria, 02-07 May.

Brochures

Eddy Covariance Solutions

Sistemas Eddy Covariance

LI-7200RS Enclosed CO2/H2O Gas Analyzer

LI-7700 Open Path CH4 Analyzer

LI-7200RS Enclosed CO2/H2O Gas Analyzer

LI-7500DS Open Path CO2/H2O Gas Analyzer

LI-7700 Open Path CH4 Gas Analyzer

Systems Integration

Tripod and Mounting Hardware

FluxSuite® Software

Biomet Systems and Sensors

Global Communications

EddyPro® Software

Solar Power

Sonic Anemometers

Field guide to instruments for the earth sciences

Features

The LI-7500DS is designed for high-speed CO2 and water vapor measurements in ambient air. Lower power and maintenance requirements make it ideal for field deployments.

low power icon

Requiring only 4 watts during normal operation, the LI-7500DS features lower power demands than any other EC gas analyzer available. It is ideal for deployment in remote areas where power is limited.

omnidirectional sampling icon

Omnidirectional sampling provides versatile installation options and continuous data coverage.

data set icon

Logs complete eddy covariance data sets—including wind speed measurements from a sonic anemometer and supporting meteorological, radiation, and soil data from a LI-COR Biomet System.

SmartFlux System version 3

Now includes the SmartFlux® System

The SmartFlux® System runs EddyPro® Software on a powerful microcomputer to compute final flux results as data are logged. It delivers the same dependable results you get from EddyPro Software on a desktop computer, only computed in real time at the site.

SmartFlux is ready to connect with  FluxSuite® Software — to put your eddy covariance system online. In FluxSuite, you can view results, get email notifications, and check the performance of your instruments from a computer and smartphone.

The LI-7500DS instrument

Miniaturized electronics and simplified hardware make the LI-7500DS easier to use. This compact instrument delivers high-speed measurements and precision needed for flux measurements. Designed for long-term deployment, the LI-7500DS improves upon a proven platform.

LI-7500DS detail
1

Ambient air temperature measurements at the optical path.

2

Temperature controlled optics and detector provide stable measurements—even in wide temperature fluctuations.

3

Precision optical components reduce sensitivity to contamination in dusty environments.

4

Scratch-resistant sapphire lenses for simple cleaning in the field.

5

High-performance brushless chopper motor provides dependable long-term operation.

Get a Quote

How it works

The LI-7500DS uses non-dispersive infrared spectroscopy to measure CO2 and water vapor densities in air.

Infrared radiation is transmitted through temperature-controlled optical filters, then through the open sample path to a thermally regulated lead selenide detector. Some of the infrared radiation is absorbed by CO2 and water vapor in the sample path. Gas densities are computed from the ratio of absorbed radiation to a reference.

From the arctic tundra to the arid deserts, the LI-7500DS is designed for the most demanding environments.

Long-term stability and drift resistance

The accumulation of dust, pollen, chemical residues, and other contaminants on optics of open-path gas analyzers can lead to measurement drift and cause gaps in datasets. Typically, this is not a problem when an instrument is regularly maintained. If an instrument is not maintained, however, there is risk that this accumulation will affect measurements.

Innovations to the optics and electronics ensure that the LI-7500DS collects more accurate and dependable data—even as contaminants begin to accumulate on the optics.

Experimental data from 13 instruments at numerous sites with a wide range of contamination levels consistently show that the optical filters in the LI-7500DS provide significantly more stable measurements than the optical filters in the LI-7500A. Figures 1 and 2 show contamination-related drift data from an urban site adjacent to heavy road traffic.

Day of ExperimentMeasurement Drift (CO2 umol mol-1)Click and drag to zoom in. Hold down shift key to pan.Original LI-7500ALI-7500RS (Same optics as new LI-7500DS)051015202530354045-25-20-15-10-5051015
Figure 1. CO2 measurements from three LI-7500RS analyzers (which use the same optics as the LI-7500DS) and three LI-7500A analyzers (average and spread). The y-axis shows the deviation from a control reference. CO2 measurements from the LI-7500RS analyzers drifted considerably less and had smaller instrument-to-instrument variability than those from the original LI-7500A models. Data show the typical improvement expected from the LI-7500RS analyzer.
Day of ExperimentMeasurement Drift (H2O mmol mol-1)Click and drag to zoom in. Hold down shift key to pan.Original LI-7500ALI-7500RS (Same optics as new LI-7500DS)051015202530354045-101234
Figure 2. Water vapor measurements from three LI-7500RS analyzers (which use the same optics as the LI-7500DS) and three LI-7500A analyzers (average and spread). The y-axis shows the deviation from a control reference. Measurements from the LI-7500RS analyzers drifted several times less, and had smaller instrument-to-instrument variability when compared with original LI-7500A models.

Minimized flow distortion

In eddy covariance systems, airflow distortion can occur when a gas analyzer is inside of, or too close to, the sonic anemometer path. If the gas analyzer is too close, it can disrupt airflow before wind enters the anemometer, leading to errors in the computation. If it is too far away, the instruments will sample different eddies, which also leads to errors.

Specifications

CO2 Measurements

    • Calibration Range: 0 to 3000 µmol mol-1
    • Accuracy: Within 1% of reading
    • Zero Drift(per °C):
      • ±0.1 ppm typical
      • ±0.3 ppm maximum
    • RMS Noise (typical @ 370 ppm CO2):
      • @5 Hz: 0.08 ppm
      • @10 Hz: 0.11 ppm
      • @20 Hz: 0.16 ppm
    • Gain Drift (% of reading per °C @ 370 ppm):
      • ±0.02% typical
      • ±0.1% maximum
    • Direct Sensitivity to H2O (mol CO2 mol-1 H2O):
      • ±2.00E-05 typical
      • ±4.00E-05 maximum

H2Measurements

    • Calibration Range: 0 to 60 mmol mol-1
    • Accuracy: Within 1% of reading
    • Zero Drift (per °C):
      • ±0.03 mmol mol-1 typical
      • ±0.05 mmol mol-1 maximum
    • RMS Noise (typical @ 10 mmol mol-1 H2O):
      • @5 Hz: 0.0034 mmol mol-1
      • @10 Hz: 0.0047 mmol mol-1
      • @20 Hz: 0.0067 mmol mol-1
    • Gain Drift (% of reading per °C @ 20 mmol mol-1):
      • ±0.15% typical
      • ±0.30% maximum
    • Direct Sensitivity to CO2 (mol H2O/mol CO2):
      • ±0.02 typical
      • ±0.05 maximum

General

  • Fundamental Gas Sampling Rate: 150 Hz
    • Bandwidth: 5, 10, or 20 Hz; software selectable
    • Type: Absolute, open-path, non-dispersive spectroscopy
  • Detector: Thermoelectrically cooled lead selenide
    • Path Length: 12.5 cm (4.92″)
  • Air Temperature Thermistor: 10K ohm @ 25 °C thermistor
    • Measurement Range: -40 to 70 °C
    • Sensor Accuracy: ±0.25 °C from -20 to 70 °C
    • Resolution: 0.003 °C @ 25 °C
  • Pressure Sensor:
    • Measurement Range: 20 to 110 kPa
    • Sensor Accuracy: ±0.4 kPa from 50 to 110 kPa
    • Resolution: 0.006 kPa
  • Outputs: Ethernet
  • Operating Temperature Range: -25 to 50 °C (-40 to 50 °C verification on request)
  • Relative Humidity Range: 0-95% (non-condensing)
  • Weatherproof Rating: Tested to IEC IP65 standard user
  • Interface: Windows® PC software
  • Power Requirements: 10.5 to 30 VDC
  • Steady-State Power Consumption: 4 W typical at 25 °C
    8 W max over operating range of -25 to 50 °C
  • Head:
    • Size: Diameter 6.5 cm, Length 30 cm
    • Weight: 0.67 kg; 1.3 kg with mounting post
    • Head Cable Length: 200 cm
  • DSI Box:
    • Size: 13.24 × 14.64 × 6.24 cm (H × W × D)
    • Weight: 0.93 kg

Specifications subject to change without notice.

Publications and Posters

See publications that use LI-COR eddy covariance analyzers.

Get the Publications List

Posters

Using Flux Measurements for Immediate Societal Benefits
Burba, G., 2022. Using Flux Measurements for Immediate Societal Benefits. American Geophysical Union Fall Meeting, Chicago, Illinois, 12-16 December.

2155 Past & Present Eddy Covariance Measurement Locations, & Still Counting
Burba G., 2019. Illustrative Maps of Past and Present Eddy Covariance Measurement Locations: II. High-Resolution Images. Retrieved August 6, 2019, www.researchgate.net 9 pp. DOI: 10.13140/RG.2.2.33191.70561

Tovi, New Software for Flux Data Analysis: from Gap Filling to Flux & Footprint Partitioning
G. Burba, I. Begashaw, A. Forgione, N. Franken, F. Griessbaum, P. Isaac, D. Johnson, J. Kathilankal, A. McQuistan, A. Parkinson, M. Sun, A. Templeton, L. Woodford, and G. Fratini, 2019. Tovi, New Software for Flux Data Analysis: from Gap Filling to Flux & Footprint Partitioning. European Geosciences Union General Assembly, Vienna, Austria, 07-12 April.

Eddy Covariance flux errors due to synchronization issues during data acquisition
Gerardo Fratini, Simone Sabbatini, Kevin Ediger, Brad Riensche, George Burba, Giacomo Nicolini, Domenico Vitale, and Dario Papale, 2019. Eddy Covariance flux errors due to synchronization issues during data acquisition. European Geosciences Union General Assembly, Vienna, Austria, 07-12 April.

Investigation on the Importance of Fast Air Temperature Measurements in the Sampling Cell of Short-Tube Closed-Path Gas Analyzer for Eddy Covariance Fluxes
James Kathilankal, Gerardo Fratini, George Burba, 2014. American Geophysical Union Fall Meeting, San Francisco, California, 15-19 December.

A New Tool for Automated Data Collection and Complete On-Site Flux Data Processing for Eddy Covariance Measurements
Israel Begashaw, James Kathilankal, Jiahong Li, Kevin Beaty, Kevin Ediger, Antonio Forgione, Gerardo Fratini, David Johnson, Michael Velgersdyk, Liukang Xu, George Burba, 2014. American Geophysical Union Fall Meeting, San Francisco, California, 15-19 December.

Direct Continuous Measurements of Methane Emissions From a Landfill
George Burba, Liukang Xu, Xiaomao Lin, Jim Amen, Karla Welding, Dayle McDermitt, 2014. American Geophysical Union Fall Meeting, San Francisco, California, 15-19 December.

Expanding Spatial and Temporal Coverage of Arctic CH4 and CO2 Fluxes
Patrick Murphy, Walter Oechel, Virginie Moreaux, Salvatore Losacco, and Donatella Zona, 2013. American Geophysical Union Fall Meeting, San Francisco, California, 9-12 December.

Efficacy of Using Eddy Covariance Method for Gas and Energy Flux measurements in Disciplines and Applications beyond Micrometeorology.
Burba, G., and D. Anderson, 2011. Efficacy of Using Eddy Covariance Method for Gas and Energy Flux measurements in Disciplines and Applications beyond Micrometeorology. European Geosciences Union General Assembly, Vienna, Austria, 03-06 April. Submitted

Combining the strengths of open-path and closed-path designs into a single CO2/H2gas analyzer
Burba, G., M. Furtaw, D. McDermitt, and R. Eckles, 2009. Combining the strengths of open-path and closed-path designs into a single CO2/H2gas analyzer. American Geophysical Union Fall Meeting, San Francisco, California, 14-18 December.

Solution for Minimizing Surface Heating Effect for Fast Open-path CO2 Flux Measurements in Cold Environments
Burba, G., D. McDermitt, J. Hupp, D. Anderson, and R. Eckles, 2010. Solution for Minimizing Surface Heating Effect for Fast Open-path CO2 Flux Measurements in Cold Environments. American Geophysical Union Fall Meeting, San Francisco, California, 13-17 December.

Calculating CO2 and H2Eddy Covariance Fluxes from Low-power Gas Analyzer Using Fast Mixing Ratio
Burba, G., A. Schmidt, R. Scott, J. Kathilankal, B. Law, D. McDermitt, D. Anderson, R. Eckles, M. Furtaw, and M. Velgersdyk, 2010. Calculating CO2 and H2Eddy Covariance Fluxes from Low-power Gas Analyzer Using Fast Mixing Ratio. American Geophysical Union Fall Meeting, San Francisco, California, 13-17 December.

Eddy Covariance Measurements of Methane Flux at Remote Sites with New Low-Power Lightweight Fast Gas Analyzer
Burba, G., L. Xu, J. Schedlbauer, D. Zona, T. Anderson, D.K. McDermitt, S. Oberbauer, W. Oechel, A. Komissarov, and B. Riensche, 2010. . European Geosciences Union General Assembly, Vienna, Austria, 02-07 May.

Brochures

Eddy Covariance Solutions

Sistemas Eddy Covariance

LI-7200RS Enclosed CO2/H2O Gas Analyzer

LI-7700 Open Path CH4 Analyzer

LI-7200RS Enclosed CO2/H2O Gas Analyzer

LI-7500DS Open Path CO2/H2O Gas Analyzer

LI-7700 Open Path CH4 Gas Analyzer

Systems Integration

Tripod and Mounting Hardware

FluxSuite® Software

Biomet Systems and Sensors

Global Communications

EddyPro® Software

Solar Power

Sonic Anemometers

Field guide to instruments for the earth sciences

Related Products

The 8200-104 Opaque Long-Term Chamber accepts industry standard SDI-12 connections to include the sensors and measurements you want at each chamber.
The LI-870 delivers rapid CO2 flux measurements with great precision while being light enough (2.31 kg) to carry all day without wearing you out.
The LI-190R Quantum Sensor measures photosynthetically active radiation (PAR). The LI-190R is designed for use in horticulture, ecology, greenhouses, and more.
The LI-8250 acts as a single point of access to interact with and control a LI-COR gas analyzer and up to 36 chambers or flasks.
The LI-7820 N2O/H2O Trace Gas Analyzer offers high-precision nitrous oxide measurements in a low power, portable design—enabling it to easily integrate into survey and long-term soil flux systems.
Handheld water quality meters that measure pH, conductivity, resistivity, salinity, TDS and DO. Waterproof, dust proof, eco-friendly, shock and scratch resistant and built for hands-free testing.
Intuitive and very easy to use touch panel operation. Easy to clean glass top and round body. Horiba LAQUA Benchtop Type Water Quality Meter is both easy and fun to use!
The 6800-18 Aquatic Chamber is used to measure steady-state carbon assimilation and chlorophyll a fluorescence from algal suspensions, coral, macro algae, and sea grasses.
The LI-200R Pyranometer is meant to be used outdoors under unobstructed natural daylight conditions. It measures global solar radiation—the combination of direct and diffuse solar radiation—in the 400
LI-COR eddy covariance systems measure the exchange of CO2, H2O, CH4 , and energy between the earth’s surface and the atmosphere, empowering researchers to advance scientific understanding of climate

How can we help?

You may contact our specialists by accomplishing form below.

Website menu

Download catalog

To download e-catalog, please submit your details below.

failure analysis, material characterization, and metrology equipment

Subscribe to newsletter

Sign up for our newsletter to get updates on promos, seminars, events, products, application notes and more.

Inquire for this Product

LI-7500DS
Open Path CO2/H2O Analyzer
LI-7500DS
Open Path CO2/H2O Analyzer