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Category: LI-7500A/RS LI-7200/RS

How to Routinely Check an Eddy Covariance System to Ensure Normal Operation

How to Routinely Check an Eddy Covariance System to Ensure Normal Operation

Most eddy covariance (EC) systems are deployed in remote areas and exposed to harsh environmental conditions. During years-to-decades of continuous operation, potential issues related to contamination, power, animal damage, lightning, and other natural events such as fog and precipitation can arise. Aging of the hardware and out-of-date software could also become issues. In order to minimize data loss, routinely checking your EC system should be part of your maintenance plan. Considering time consumption and effectiveness, here are our recommendations:

  1. Check…

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Updating Positional Tags for Biomet Data

Updating Positional Tags for Biomet Data

Version 8.0.0 of the LI-7500RS/LI-7500A/LI-7200RS/LI-7200 gas analyzer embedded software implemented a new identifier for Biomet data.  The identifier is a set of three digits that indicates the horizontal position (h), vertical position (v), and replicate number (r) at that position.  This naming protocol is based on the protocol for the AmeriFlux and ICOS networks (http://ameriflux.lbl.gov/data/aboutdata/data-variables/).  This information is stored by the LI-7550 in the biomet.metadata file for use with EddyPro® Software.  In the Sutron datalogger, there is a communications tag…

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Wiring an RM Young Sonic Anemometer to a LI-COR EC System

Wiring an RM Young Sonic Anemometer to a LI-COR EC System

The RM Young 81000 sonic anemometer is one of the many sonic anemometers that can be used with a LI-COR EC system. Since the RM Young provides a junction box, wiring it to the LI-7550 is straight forward. The Analog Input/output cable (Part Number 392-10109) provided with the LI-7550 spare parts kit can be used instead of the Auxiliary Sensor Interface Unit. You can wire the bare lead ends directly to the junction box of the RM Young 81000 and…

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Fresh Data Every Morning

Fresh Data Every Morning

There’s nothing like a fresh download of data to get your day started. The Internet of things has made it possible for you to download your data automatically from your Eddy Covariance measurement system directly to your computer. Using wired Internet, or cellular or satellite communications, your measurement system can be remotely accessed from the comfort of your office or home. After you have set up remote access, here is a quick tip that can help you reduce…

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How to set the clock in the LI-7500A or LI-7200 CO2/H2O gas analyzer to local standard time

How to set the clock in the LI-7500A or LI-7200 CO2/H2O gas analyzer to local standard time

The LI-7500A or LI-7200 with the LI-7550 Analyzer Interface Unit is a network-based instrument.  Multiple users can log data from a single instrument over multiple TCP/IP (Transmission Control Protocol/Internet Protocol) connections. Therefore, the LI-7500A and LI-7200 use Coordinated Universal Time (UTC) for their onboard time-keeping tasks. The default time stamp is UTC time, but the LI-7550 clock can be set to any time you desire.

For Eddy Covariance measurements, local standard time is generally recommended because it does not get…

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