Archive for the ‘LI-7500A’ Category

LI-COR Analyzers Monitoring Carbon Dioxide Worldwide as Atmospheric Levels Reach 400 parts per million

Tuesday, May 21st, 2013

On May 13, the National Oceanic and Atmospheric Administration (NOAA) reported a preliminary daily average carbon dioxide (CO2) reading of 400.07 parts per million (ppm) at the Mauna Loa Observatory on the Big Island of Hawaii. On May 9, a reading over 400 ppm was reported at the site for the first time ever. But…

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Posted in Feature Stories, Gas Analyzers, LI-7000, LI-7200, LI-7500A, LI-7700, What's New | No Comments »

Adjusting Timestamps for Daylight Savings Time (DST)

Tuesday, May 7th, 2013

In flux data analysis it is common to compare the local site data with data from other sites that are in regional or global flux networks (eg. AmeriFlux, FluxNet, AsiaFlux).  The issue of timestamp is important for such comparisons and using a time stamp that adjusts for Daylight Savings Time (DST) complicates the comparison because…

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Posted in Gas Analyzers, LI-7200, LI-7500A, LI-7700, Tech Tips | No Comments »

Instrument Training Workshop in Brazil

Monday, December 3rd, 2012

Brazil Training Workshop 2012

LI-COR scientists recently returned from South America where, together with prominent Brazilian scientists, they conducted a week long workshop covering photosynthesis, soil gas exchange, and eddy covariance flux measurements.  The workshop was organized with the help of Dr. Ricardo Oliveira and LI-COR’s distributor in Brazil, Alem Mar Comercial e Industrial. Over sixty participants from universities…

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Posted in Feature Stories, LI-6400XT, LI-7200, LI-7500A, LI-7700, LI-8100A, What's New | No Comments »

How to Interpret the Diagnostic Values from the LI-7500A and LI-7200 CO2/H2O Gas Analyzers

Wednesday, November 28th, 2012

The diagnostic values output by the LI-7500A and LI-7200 CO2/H2O gas analyzers indicate whether or not your instruments are working normally, and what might have gone wrong in case of  a malfunction. Here are the two steps for interpreting the diagnostic values: 1.  Convert the diagnostic values from decimal to binary format The LI-7500A and…

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Posted in Gas Analyzers, LI-7200, LI-7500A, Tech Tips | No Comments »

LI-COR Presents Landfill Methane Emission Data at Global Waste Management Symposium

Friday, October 12th, 2012

Measuring greenhouse gas emissions at landfills using continuous monitoring offers new insight in estimating total annual emissions. LI-COR Principal Scientist, Liukang Xu presented methane emission data collected from a landfill at Global Waste Management Symposium in Phoenix, AZ on October 1st, 2012 and discussed the advantages of continuous monitoring over traditional interval monitoring. In the…

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Posted in Gas Analyzers, LI-7200, LI-7500A, LI-7700, What's New | No Comments »