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Flux measurements
Flux measurements

Flux measurements

Los Gatos Research (LGR) now offers more analyzer choices to measure surface-atmosphere fluxes. Traditionally, there are four main flux measurement techniques: Eddy Covariance, Relaxed Eddy Accumulation, Gradient and Chamber-based. Though carbon dioxide and water vapor are the most common greenhouse gases measured, in many ecosystems a number of different gases must be measured. LGR's technology has improved rapidly over the years and new analyzers are now available allowing scientists to expand their research by measuring other greenhouse gases such as methane, nitrous oxide, carbon monoxide, ammonia, and carbonyl sulfide.




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More Choices at Great Prices

Now LGR offers an expanded line of high speed (10 Hz) and lower speed (up to 1 Hz) gas analyzers that can be used for all four techniques to measure a wide variety of gases.

Two important accessories are also available:

Multi-Channel Data Logging Software: Synchronizes serial (RS-232) outputs from multiple LGR analyzers and other devices, such as GPS or sonic anemometers, and records all data with a common time stamp.

Multiport Inlet Unit (MIU): Available with either 8 or 16 inlets and 1 output port which is used to connect to the Analyzer. The MIU inputs are fully controlled by software on the LGR Gas Analyzer so that any port may be selected at any time. Once programmed, the sequence of measurements is fully automated.

Here is a list of the LGR analyzers that can be used for each flux measurement technique:


Eddy Covariance Technique »

For New Eddy Covariance Sites: Choose the high speed, high precision LGR analyzer(s) listed below based on which gases you want to measure. You can connect the analyzer(s) to a datalogger or use the LGR multi-channel data logging system to connect a sonic anemometer available from various manufacturers such as Campbell Scientific, Gill, Applied Technologies (ATI), Metek, RM Young, or Kaijo-Denki.

For Existing Eddy Covariance Sites: Expand your system by adding any of these high speed, high precision LGR analyzers. You can connect the analyzer(s) to your existing datalogger.

  • Greenhouse Gas Analyzer to 10 Hz: The world's most advanced analyzer for simultaneous measurements of CH4, CO2 and H2O.
  • Fast Methane Analyzer to 20 Hz: For simultaneous measurements of CH4 and H2O with unsurpassed precision, accuracy and dynamic range.
  • OCS Analyzer to 10 Hz: For simultaneous measurements of COS (Carbonyl Sulfide), CO2, CO and H2O with extraordinary precision and sensitivity.
  • Carbon Dioxide Analyzer to 10 Hz: For simultaneous measurements of CO2 and H2O with unsurpassed precision, accuracy and dynamic range.
  • CO/CO2 Analyzer to 10 Hz: For extremely high precision and simultaneous measurements of CO, CO2 and H2O.
  • Carbon Monoxide Analyzer to 10 Hz: For simultaneous measurements of CO and H2O with unsurpassed precision, accuracy and dynamic range.
  • N2O/CO Analyzer to 10 Hz: For simultaneous measurements of N2O, CO and H2O with unsurpassed precision, accuracy and dynamic range.
  • Trace Ammonia Analyzer to 10 Hz: Measurements of NH3 with unsurpassed precision, accuracy and dynamic range.

In addition to the high speed, high precision analyzers, LGR offers the most complete line of isotope analyzers:

Relaxed Eddy Accumulation (REA) Technique »

Gradient Flux Technique »

Chamber-Based Technique »

Use your custom made chambers, other commercially available chambers or other accessories to connect to any of the analyzers below or use the LGR Multiport Inlet Unit (see below) to connect multiple chambers.


Published Papers referencing LGR analyzers for the above techniques »



To get more info, contact the Envicontrol team

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We participate in various fairs and seminars around Europe where we can keep you informed of the latest developments and possibilities in the field of measurement and analysis equipment. Below you will find an overview of the events we visited recently and the events where you can meet us soon.

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