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Category: LI-7200

LI-7200 Enclosed CO2/H20 Analyzer

Changing Seasons With Your Eddy Covariance System: Tips and Tricks

Changing Seasons With Your Eddy Covariance System: Tips and Tricks

It is good practice to give your instrumentation routine maintenance as the seasons change. Below is a list of tips to help keep your Eddy Covariance System running in top shape.

Gas Analyzers: LI-7500A/RS/DS and LI-7200/RS CO2/H2O Analyzers

  • Check your software version and update to the latest instrument software, if necessary. Go here to update LI-7500A/RS/DS software, or here for LI-7200/RS software.
  • Check when the analyzer was last factory-calibrated, noting the recommended frequency.
  • Replace the internal…

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Zero and Span Gas Guidelines

Zero and Span Gas Guidelines

LI-COR technical support often receives questions about choosing a set of CO2 calibration gases for our analyzers.   While we realize that every customer’s measurement situation may be slightly different, we do have a few suggestions for selecting a set of calibration gases.

We recommend having a zero gas, or the equipment to perform a chemical zero at the very least.  A zero gas is best if the gas is really CO2-free.   It’s not necessary to purchase pure nitrogen or argon…

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R3 and HS Sonic Anemometer Configuration

R3 and HS Sonic Anemometer Configuration

The Gill R3 and HS series of anemometers can be connected to the LI-7550 to collect data on a USB drive.  This can facilitate remote data monitoring and collection through the available Ethernet connectivity.

The anemometer will have to be preconfigured to send data out in the required format. This can be achieved using any serial communication software like Windows HyperTerminal or Tera Term (which can be downloaded for free here). You can also use the WindCom or RCom2…

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7200-101 Flow Module – High Frequency Noise Reduction

7200-101 Flow Module – High Frequency Noise Reduction

In some situations, the 7200-101 Flow Module may emit high frequency noise through its exhaust port. This may occur if the motor drive of the Flow Module is ramped up to maintain the flow rate as pressure drops in the flow path.

Inline filters that clog up over time may cause a significant motor drive increase, especially if the inline filter is not replaced before the motor drive reaches its maximum at 100%.

Silencer

The silencer shown below in Figure…

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Using a Cradlepoint Modem with LI-COR Eddy Covariance Systems

Using a Cradlepoint Modem with LI-COR Eddy Covariance Systems

LI-COR Eddy Covariance systems can be used with a variety of modems and M2M devices for remote communication. LI-COR provides Sierra Wireless modems for remote communication. However, there are a variety of other devices that can be used. Please refer to our technical note on cellular communications for Eddy covariance.

Cradlepoint manufactures various kinds of M2M/IoT and In-Vehicle Routers that can be used for this purpose. These modems are not officially supported or supplied by LI-COR, but here are…

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