Closed-Path Eddy-Covariance Systems Low-maintenance, robust, and integrated closed-path EC systems

About Closed-Path Eddy-Covariance Systems

Campbell Scientific offers closed-path eddy-covariance systems for fluxes of CO₂, H₂O (latent heat), sensible heat, CH₄, N₂O, and CO₂ isotopes. These systems are an optimum solution for long-term, low-maintenance flux monitoring thanks to the features of automatic zero/span, low-power requirements, and the revolutionary vortex intake (U.S. Pat. No. 9,217,692), which reduces maintenance and improves H₂O frequency response compared to traditional closed-path systems. The systems are also designed to minimize spatial separation and better synchronize measurements, thereby reducing uncertainties in EC fluxes. Customization of systems to accommodate energy balance and other sensors may be possible; contact Campbell Scientific for more information.

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Retired Products
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Product Line

CPEC310 Expandable Closed-Path Eddy-Covariance System with EC155, Pump Module, and Automatic Zero and Span

The CPEC310 with EasyFlux® is a turn-key, closed-path eddy-covariance (EC) flux system for long-term monitoring of atmospheric-biosphere exchanges of carbon dioxide, water vapor, heat, and momentu...read more

HFP01-L Soil Heat Flux Plate

The HFP01, manufactured by Hukseflux, measures soil heat flux, typically for energy-balance or Bowen-ratio flux systems. It outputs a voltage signal that is proportional to the heat flux of the s...read more

CR6 Automated Monitoring Platform

The CR6 Automated Monitoring Platform, designed on decades of infrastructure and environmental monitoring experience, is used by some of the largest monitoring networks worldwide. With the unique abil...read more

CR1000X Measurement and Control Datalogger

The CR1000X is our flagship data logger that provides measurement and control for a wide variety of applications. Its reliability and ruggedness make it an excellent choice for remote environmental ap...read more

Other Products

CPEC306 Expandable Closed-Path Eddy-Covariance System with EC155 and Pump Module

The CPEC306 with EasyFlux® is a turn-key, closed-path eddy-covariance (EC) flux system for long-term monitoring of atmospheric-biosphere exchanges of carbon dioxide, water vapor, heat, and momentu...read more

CSAT3A 3-D Sonic Anemometer, Head Only

The CSAT3A 3-D Sonic Anemometer is the 3-D sonic anemometer of choice for eddy-covariance measurements. It has an aerodynamic design, a 10 cm vertical measurement path, operates in a pulsed...read more

NR01-L 4-Component Net Radiometer

The NR01, manufactured by Hukseflux and cabled for use with Campbell Scientific data loggers, is a research-grade net radiometer that measures the energy balance between incoming short-wave and long-w...read more

CNR4-L 4-Component Net Radiometer

The CNR4, manufactured by Kipp & Zonen and cabled for use with Campbell Scientific data loggers, is a research-grade net radiometer that measures the energy balance between incoming and outgoing r...read more

TCAV-L Averaging Soil Thermocouple Probe

The TCAV-L typically provides the average temperature of the top 6 to 8 cm of soil for energy-balance in flux systems. It parallels four thermocouples together into one 24 AWG wire. Each member of a t...read more

HFP01SC-L Self-Calibrating Soil Heat Flux Plate

The HFP01SC, manufactured by Hukseflux, measures soil heat flux—typically for energy-balance or Bowen-ratio flux systems. It is intended for applications requiring the highest possible...read more

FW05 Type E Fine-Wire Thermocouple with 0.0005 in. Diameter

The FW05 is a Type E thermocouple with a 0.0005 in. diameter. It measures atmospheric temperature gradients or fluctuations with research-grade accuracy. The FW05 is compatible with most Campbell Scie...read more

FW1 Type E Fine-Wire Thermocouple with 0.001 in. Diameter

The FW1 is a Type E thermocouple with a 0.001 in. diameter. It measures atmospheric temperature gradients or fluctuations with research-grade accuracy. The FW1 is compatible with most Campbell Scienti...read more

FW3 Type E Fine-Wire Thermocouple with 0.003 in. Diameter

The FW3 is a Type E thermocouple with a 0.003 in. diameter. It measures atmospheric temperature gradients or fluctuations with research-grade accuracy. The FW3 is compatible with most Campbell Scienti...read more

EasyFlux DL Eddy-Covariance Datalogger Program

EasyFlux® DL is a free CRBasic program that enables a data logger to report fully corrected fluxes of CO2, latent heat (H2O), sensible heat, and momentum from a Campbell Scientific open-path and c...read more

EasyFlux PC Eddy-Covariance Post-Processing PC Software

EasyFlux® PC is a free computer program that processes high frequency time series data, collected using a Campbell Scientific eddy-covariance flux system, into fluxes following community accepted...read more

Retired Products

CPEC300 Compact Closed-Path Eddy-Covariance System with EC155 and Pump Module

CPEC200 Closed-Path Eddy-Covariance System

EasyFlux WebS EasyFlux Web Software, Self-Hosted

EasyFlux WebH EasyFlux Web Software, Campbell Scientific-Hosted

Case Studies

British Columbia: Forest Carbon Sequestration
Forest habitats contribute more than any other terrestrial biome to carbon cycles and processes. It......read more

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Documents

Miscellaneous

Frequently Asked Questions

Number of FAQs related to Closed-Path Eddy-Covariance Systems: 2

What is needed to set up a communication network for an eddy-covariance system in a remote location?
Feasible telemetry solutions vary from location to location. Contact Campbell Scientific for help in determining which options are feasible for the location. The following are some helpful things to know for the discussion:
- What are the characteristics of the terrain?
- Which data logger will be used?
- Is there clear line of sight?
- Is Ethernet available?
- Do cellular phones have coverage at the site?
- What are the distances between the base locations and the field locations?
- If there is a current network installed, what is it?
- Can wired networks be used?
Eddy-covariance systems typically generate a multitude of data. Generally, not all of the data can be transmitted through a telemetry network. Experts at Campbell Scientific can help determine what data can be transmitted using telemetry.
Where is there more information about open-path and closed-path gas analyzers?

For more information, see the white paper “EC150, IRGASON, or EC155: Which CO₂ and H₂0 Eddy-Covariance System Is Best for My Application?”

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