EC155 CO2/H2O Closed-Path Gas Analyzer System

Other Accessories

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.

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.
A zero and span should be done when ambient conditions change significantly (i.e., seasonally). An RMA is required.