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Leaf Area Options for the LI-6800

Leaf Area Options for the LI-6800

New leaf area options for the LI-6800 Portable Photosynthesis System are available. Measurable leaf areas ranging from 2 cm2 all the way to 36 cm2 mean you can take measurements on leaves of nearly any shape and size.

An accurate measure of leaf area is an important parameter for calculating assimilation rate. If the area of the chamber occupied by the leaf completely covers the aperture, the leaf area calculation is simple — for example, with the 3×3 cm aperture, the measurable…

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Changing Seasons With Your Photosynthesis System: Tips and Tricks

Changing Seasons With Your Photosynthesis System: Tips and Tricks

As the seasons change, it’s always a good practice to give your instrumentation some much-needed attention and routine maintenance. Below is a list of tips to help you get your LI-6800 or LI-6400/XT photosynthesis system ready for a new season of measurements.

LI-6800 Portable Photosynthesis System

  • Check your software version(s) and update to the latest instrument software, if necessary.
  • Check when the instrument was last factory-calibrated, noting the recommended frequency.
  • Check and replace the console air filter…

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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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Using a Longer Cable for the External Quantum Sensor on the LI-6800

Using a Longer Cable for the External Quantum Sensor on the LI-6800

The standard external quantum sensor (LI-190R) provided with the LI-6800 sensor head (LI-6850) has a 12 inch (30.5 cm) cable terminated with a 3.5 mm audio plug.  For some applications, it may be desirable to place an external quantum sensor at a greater distance from the sensor head. For these applications, an audio plug adapter can be used in conjunction with another LI-190R quantum sensor with a longer cable. LI-190R sensors are available in cable lengths of 2m, 5m, 15m…

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Resolving a Leak Issue With the LI-6800

Resolving a Leak Issue With the LI-6800

Leaks will get your attention by causing a leak/flow test failure (Start Up->Warmup/System Tests), low ‘Flow’ reading (mass flow to chamber in the diagram), low ‘Flow_s’ or ’Flow_r’ reading (flow through the sample/reference gas analyzer). The following three warning messages may appear on the upper left corner of the display: ‘Console flow leak?’, ‘Flow_s low’, ‘Flow_r low’ (see Table 5-2 on the page 5-4 of the LI-6800 manual for more details).

  1. If you can achieve ‘Flow’ setpoint, but…

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