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.

Full size video presentation
PDF format presentation

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

Go back to overview

Stay informed? Sign up!

Register yourself for our meetings and trainings. For more details please click on the event you are interested in.

Questions? Please ask!

We are happy to answer all of your question, you can even send it online via our contactpage.
Contact us
  • Exclusive contracts with various suppliers of high-tech measurement equipment.
  • We modify and integrate products in a solution.
  • Our own laboratories guarantee fast and optimal services.
Teledyne API
Micro Pulse LiDAR, part of Hexagon
LSE monitors
OPSIS LiquidLine
ABB Water
Mega System
2B technologies
SK Elektronik
Our dear Stéphane passed away. News: Our dear Stéphane passed away.

It is with profound sadness that we must announce that our dear Stéphane Loyen passed away at 2021 sunset.
Civil engineer with industry and metrology background, Stéphane had joined Envicontrol as operations manager in 2009. As a partner and general manager as of 2013, he built a wider and stronger company structure while helping to expand the product portfolio and embrace new markets.
Thanks to Stéphane’s strategic vision and stubborn work, Envicontrol is more than ever in order of battle to take up the future challenges with dedicated management team and skilled workforce.
Thank you and farewell, Chef!

VMM chooses for TAPI-400 O3 monitors again! News: VMM chooses for TAPI-400 O3 monitors again!

Vlaams Milieu Maatschappij, the Belgian Air Quality Monitoring authority for the Flanders region (VMM – www.vmm.be) has chosen to work with Envicontrol for monitoring ozone (O3). Twenty T400 analysers from TAPI will be supplied starting early 2022.

Droplet's Mini Micro Pulse LIDAR News: Droplet's Mini Micro Pulse LIDAR

The Mini Micro Pulse LiDAR (MiniMPL) is a small form factor, low-power, elastic backscatter lidar. The instrument is a ground-based, optical, remote-sensing system designed to determine the altitude of clouds and to detect atmospheric aerosols.

ISSeP chooses Tekran again News: ISSeP chooses Tekran again

After more than 10 years of experience in mercury trace gas monitoring with Tekran devices, ISSeP (Institut Scientifique de Service Public - Belgium), has renewed his confidence in the product by buying the new Tekran 2537X. This analyser, based on gold preconcentration with atomic fluorescence detection principle, measures the total gaseous mercury (TGM) with a sensitivity lower than 0.1 ng/m3.

Cloud, aerosol and precipitation spectrometer with depolarization News: Cloud, aerosol and precipitation spectrometer with depolarization

The CAPS-DPOL is a multipurpose, research-grade cloud spectrometer that includes three Droplet instruments (CIP, LWC, and CAS), temperature and relative humidity sensors and polarization measurement to discriminate between water and ice.

Monitoring low levels of formaldehyde in ambient air News: Monitoring low levels of formaldehyde in ambient air

Formaldehyde, chemical formula HCHO or CH2O, is a colorless gas with a pungent odor. Levels above 0.1 ppm can cause allergy and acute health problems, e.g. sore throat, skin irritation, nausea, scratchy eyes and cough. Formaldehyde (HCHO) is also classified as highly carcinogenic compound. Exposure to moderate amounts of HCHO has been linked to cancer, such as leukemia.

New carbon dioxide isotope analyzers News: New carbon dioxide isotope analyzers

Stable isotopes act as tracers for studying flows and fluxes of material through ecosystems and the atmosphere. In practice, scientists measure the stable carbon isotope content of air, plants and soil to quantify many phenomena including the recycling of carbon dioxide within forests, water use efficiency, partitioning ecosystem carbon exchange into its components, gross primary productivity and ecosystem respiration, and to identify and quantify the distribution and contributions of plant species to global productivity. In addition, stable isotopes of carbon may be used to determine the effectiveness of carbon sequestration strategies. For these studies, investigators require fast, accurate measurements over a wide range of carbon dioxide concentrations.

ABB LGR-ICOS Carbon Dioxide Isotope analyzers exceed all of these requirements.

Cloud Condensation Nuclei (CCN) counter News: Cloud Condensation Nuclei (CCN) counter

Droplet's CCN-100/200 measures the count and size of individual aerosol particles that can form into cloud droplets. Its fast response time allows use in either airborne or ground-based stations.

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.


Envicontrol Belgium

P +32 (0) 81 713 491

Rue Phocas Lejeune 25
B-5032 Les Isnes

Envicontrol Deutschland

P +49(0)221 7907 7054

Waidmarkt 11
DE-50676 Köln

Envicontrol France

P +33(0)1 39 76 04 19

Route de Sartrouville 54
F-78230 Le Pecq

Envicontrol Nederland

P +31(0)418 651 158

Valeton 25
5301 LW Zaltbommel
Equipment selector


Show Video

Watch our Video

In this video Envicontrol commits to give a answer on instrumentation, formation and maintenance.