Posts Tagged ‘LI-7000’
EddyPro Units – Distinguishing Between Molar Density, Mole Fraction, and Mixing Ratio
Wednesday, November 16th, 2011
Confused by the units provided by your gas analyzer? Which units should you use when processing eddy covariance data sets in EddyPro? This chart summarizes the definition of units, different ways to express measurements, and which instruments record data in which units. Measurement Type Intended Meaning Common Units Typical Instruments Molar Density • A measurement…
Read More...Tags: CO2, eddy covariance, gas analyzer, LI-7000, LI-7200, LI-7500A, LI-7700, methane, open path analyzer
Posted in EddyPro, LI-6262, LI-7000, LI-7200, LI-7500A, LI-7700, Tech Tips | No Comments »
Greenhouse Gas Exchange
at the Polar Bear Capital of the World
Wednesday, January 26th, 2011
So you think you have trouble collecting data in your remote environment? If so, pity the stalwart researchers working out of the Churchill Northern Studies Centre (www.churchillscience.ca) near Churchill, Manitoba, Canada, nicknamed the ‘Polar Bear Capital of the World’. On any given day, Dr. Mario Tenuta, Canada Research Chair in Applied Soil Ecology, The University…
Read More...Tags: CO2, gas analyzer, LI-7000, LI-7500A, methane, open path analyzer
Posted in Feature Stories | No Comments »
LI-COR Celebrates 25 Years of CO2 Analysis R&D
Monday, September 27th, 2010
Revolutionary scientific instruments – devices that enable new research – take time to develop and perfect. The development of revolutionary instruments requires identifying limitations of the current technology and finding innovative solutions, followed by extensive testing. This process has guided product development at LI-COR, from our first stand-alone CO2 analyzer nearly 25 years ago, to…
Read More...Tags: CO2, gas analyzer, LI-7000, LI-7200, LI-7500A, open path analyzer
Posted in Feature Stories, Gas Analyzers, Photosynthesis | No Comments »
Calibrating the LI-7000 for H2O
Sunday, April 5th, 2009
To calibrate the LI-7000 CO2/H2O Analyzer for water vapor, LI-COR recommends using our LI-610 Dew Point Generator. The LI-610 generates a known water vapor concentration and reports the dew point value on the front LCD display in units of Degrees C. The gas stream can then be plumbed directly into the LI-7000′s appropriate inlet port….
Read More...Tags: calibration, CO2, dew point, gas analyzer, LI-610, LI-7000
Posted in Gas Analyzers, LI-610, LI-7000, Tech Tips | No Comments »
Calibrating the LI-7000 for Eddy Covariance Measurements
Monday, January 5th, 2009
Many customers use a closed-path Analyzer (such as the LI-7000 CO2/H2O Analyzer) for making Eddy Covariance measurements. When employing this method of measurement, the user will typically use a pump downstream of the analyzer. The pump will pull air (typically between 8 and 15 liters per minute) from the sampling site where the sonic anemometer…
Read More...Tags: calibration, closed-path, CO2, eddy covariance, gas analyzer, H2O, LI-7000
Posted in Gas Analyzers, LI-7000, Tech Tips | 1 Comment »
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