Help and Documentation

Welcome to the LI-7500A/RS Open Path CO2/H2O Gas Analyzer help and documentation.

Important: If you are processing Gill WindMaster or WindMaster Pro sonic anemometer data please read this article: Data Processing Considerations.

Top Resources

NEW! What's new in win-GHG interface v8.9.0 and SmartFlux Firmware v2.3.0

Overview of new features in the latest software release for the win-GHG app and the SmartFlux® 2/3 System embedded firmware. Read this if you are familiar with the software and want to see what has changed.

NEW! LI-7500RS and SmartFlux 2 System Quick Start Guide


Quick start guide provides a broad overview of the order to follow when setting up a system, as well as considerations for site maintenance and data management.

NEW! Using the LI-7500A/RS Open Path CO2/H2O Analyzer and the SmartFlux 2 System


Instruction Manual for the LI-7500RS and LI-7500A.

Measuring Evapotranspiration with LI-COR Eddy Flux Systems

Application note that describes measurement of evapotranspiration with LI-COR eddy covariance systems.

Eddy Covariance Method for Scientific, Industrial, Agricultural, and Regulatory Applications

Overview of the eddy covariance method in applications besides micrometeorology, including industry, agriculture, and regulatory compliance.

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Factory Recalibration

Recommended Recalibration Frequency: Every two years; however, if the internal chemicals are serviced every two years and the analyzer zero and span are verified, then no regular factory recalibration is required.

What is included with factory recalibration?

Request Service and Recalibration

To request factory service or recalibration for a LI-COR instrument: Request Factory Service or Recalibration

Service will be performed at our US office in Lincoln, NE USA, European office (LI-COR Biosciences - GmbH), or by a distributor. To locate your country and designated point of contact click here.

Looking for a Calibration Certificate?

Training Courses

Eddy Covariance

Thank you for your registration.

You will receive an email shortly.

If you do not receive it within 24 hours or if you have any questions, please contact LI-COR at 1-402-467-3576.

Thank you for your interest in online eddy covariance training.

This training is full. We will contact you if a spot becomes available or if we add another training date.

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