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 momentum. A complete system consists of a closed-path gas analyzer (EC155 closed-path gas analyzer), sonic anemometer (CSAT3A sonic anemometer), data logger (CR6 datalogger), sample pump, three-valve module that enables automatic zero and CO₂ span measurements (manual H₂O span), and accommodations for a CDM-A116 analog input expansion module allowing for additional sensors.

The gas analyzer’s patented vortex intake design (United States Patent No. 9,217,692) and small sample cell volume (5.9 mL) provide a much lower flow rate than other closed-path systems while maintaining excellent frequency response (4.3 Hz cutoff frequency). Additionally, this design makes the system virtually maintenance free while still maintaining an ideal frequency response compared to traditional inline filters. Lower flow allows the CPEC310 to have one of the lowest total system power requirements (12 W) of any closed-path eddy covariance system. Campbell Scientific manufactures all components of the CPEC310, including the data logger and EasyFlux^® DL software for computing and correcting fluxes, which gives our system the most reliable functionality.

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 surrounding medium. At least two sensors are required for each site to provide spatial averaging. Sites with heterogeneous media may require additional sensors 

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 ability to serve both as an edge device and gateway, this simplifies networks that would otherwise require discrete devices to provide complete access to your data.

This unique platform is used where reliability, flexibility, and compatibility are essential to your success. The CR6 ecosystem supports an array of powerful peripherals that add channel capacity, distributed measurements, and communication capabilities, as well as measure vibrating wire sensors dynamically.

Campbell Scientific’s vibrating wire measurement devices, including the CR6, are the only devices that use patented VSPECT® technology. VSPECT filters external noise from your sensor and gives you diagnostic information about the quality of your vibrating wire

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 applications, including weather stations, mesonet systems, wind profiling, air quality monitoring, hydrological systems, water quality monitoring, and hydrometeorological stations.

The CR1000X is a low-powered device that measures sensors, drives direct communication and telecommunications, analyzes data, controls external devices, and stores data and programs in onboard, nonvolatile storage. The electronics are RF-shielded by a unique sealed, stainless-steel canister. A battery-backed clock assures accurate timekeeping. The onboard, BASIC-like programming language, common to all contemporary Campbell Scientific data loggers, supports data processing and analysis routines.

• • Data logger’s SDM command 
  • EC100’s internal clock 

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-wave infrared radiation versus surface-reflected short-wave and outgoing long-wave infrared radiation. Our data loggers measure the NR01's output and control its internal heater. This net radiometer offers a professional solution for scientific-grade energy balance studies.

Note: NR01 radiometers with a serial number less than 2313 used the pn 21271 fitting. NR01 radiometers with a serial number greater than 2312 do not need the pn 21271 fitting.

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 thermocouple pair can then be buried at a different depth. The two pairs are separated at a distance of up to 1 m.  

Benefits and Features 

Used in conjunction with soil heat-flux plates and soil-moisture probes to compute total soil heat flux 

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 degree of measurement accuracy. The HFP01SC outputs a voltage signal that is proportional to the heat flux of the surrounding medium. At least two sensors are required for each site to provide spatial averaging. Sites with heterogeneous media may require additional sensors. 

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 Scientific data loggers, and it is often used in eddy-covariance systems. 

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 Scientific data loggers, and it is often used in eddy-covariance systems. 

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 Scientific data loggers, and it is often used in eddy-covariance systems. 

Current Version: 2.01 

EasyFlux® Web Self-Hosted is a web-based software tool for monitoring any Campbell Scientific data-logger-based system, including data loggers running EasyFlux® DL. EasyFlux® Web Self-Hosted is a user-installed version of EasyFlux® Web that allows users the ability to install on their own server and control updates of the software themselves. Monitoring a network of Campbell Scientific data-logger-based systems is made easy with real-time data monitoring, customizable alerts, and data download capabilities. EasyFlux® Web is compatible with all Campbell Scientific data-logger-based stations. 

Updates in Version 2.01 

The updated EasyFlux® Web 2.01 includes new benefits and features to enhance the user experience. EasyFlux® Web 2.01 now provides the ability to monitor live video cameras. 

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 closed-path eddy-covariance (EC) system. Final fluxes are processed from raw high frequency time series data by applying commonly used corrections found in scientific literature. 

In the past, Campbell Scientific's data logger EC programs roughly estimated fluxes, and PC post-processing software was used to fully correct the flux measurements. Now with the EasyFlux® DL program, fully corrected fluxes are processed by the data logger and reported at the end of each EC averaging interval. 

EasyFlux® DL has been tested at several stations in various environments, including irrigated alfalfa, grassland, maize, open water, forest, and desert. The results have shown good agreement with fluxes processed using traditional PC-based software applications. 

EasyFlux® Web CSI-Hosted is a web-based software tool for monitoring any Campbell Scientific data-logger-based system. EasyFlux Web CSI-Hosted is hosted on Campbell Scientific's own Microsoft Azure server, which allows for automatic updates and maintenance of the software. After users create an account, they are given their own IP address to allow them to easily connect to their data from an Internet-connected device. Monitoring a network of data loggers is made easy with real-time data monitoring, customizable alerts, and data download capabilities. EasyFlux Web is compatible with all Campbell Scientific data-logger-based systems, including flux, weather, and soil stations. 

Updates in Version 2.01 

The updated EasyFlux Web 2.01 includes new benefits and features to enhance the user experience. EasyFlux Web 2.01 now provides the ability to monitor live video cameras. 

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 practices. Fully corrected fluxes of CO2, latent heat (H2O), sensible heat, and momentum are available in generic, AmeriFlux, and GHG-Europe ASCII formats.