EC155 CO2/H2O Closed-Path Gas Analyzer System

Other Accessories

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.
EasyFlux™ DL is a free CRBasic program that enables a datalogger to report fully corrected fluxes of CO2, latent heat (H2O), sensible heat, and momentum from a Campbell Scientific open-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.
The eosFD uses the patented Forced Diffusion (FD) technology to measure soil CO2 flux directly using an NDIR sensor and small internal diaphragm pump. It features onboard data logging capabilities that enable it to be a stand-alone sensor; however, it can also deliver analog or serial data to Campbell Scientific data loggers. This sensor compliments a Campbell Scientific eddy-covariance system. The included eosLink software enables you to connect, configure, and collect data directly from the sensor.

Replacement Parts

The EC100-EB includes the EC155 electronics box and a Campbell Scientific CS106 barometer mounted inside of the electronics box.
The CM250 is a leveling mount kit for attaching the EC155 to a crossarm.
The 4905 Single 4-Unit Silica Desiccant Bag is packaged in Tyvek. The supplied desiccant should fill the initial needs of most applications, but should be periodically replaced.
The 32203 is a replacement in-line filter kit for the EC155 heated vortex. The kit includes a 25 µm filter and new ¼ in. Swagelok® nuts.
The 28698 is a replacement intake filter (qty 1) and should be used for sites with excessive dust.


The 27332 provides a recalibration with zero and span. When drift between zero and span checks seems unstable, or when diagnostic output indicates a problem, the instrument should be sent in for a full factory calibration with zero and span. An RMA is required.
The 27333 allows customers to send their EC155 or CPEC200 to Campbell Scientific and have Campbell Scientific perform a zero and span; an RMA (Returned Material Authorization) is required. The zero and span should be done when ambient conditions change significantly (i.e., seasonally).