Archive for January, 2009
LI-7500 Communications: Wrong Serial Cable?
Monday, January 5th, 2009
Most Eddy Covariance Flux Systems use the LI-7500 CO2/H2O Analyzer in conjunction with a Campbell Scientific Data Logger. The Campbell Data Logger communicates with a computer using a straight through type serial cable. This means pin 2 connects to pin 2, pin 4 to pin 4, etc. LI-COR, however, uses a combination of two serial…
Read More...Tags: CO2, eddy covariance, gas analyzer, LI-7500A, serial adapter, serial cable
Posted in Gas Analyzers, LI-7500A, Tech Tips | 1 Comment »
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 »
Conserving Power When Using the LI-8100
Monday, January 5th, 2009
When using the LI-8100 Automated Soil CO2 Flux System, you may need to collect Soil CO2 Flux measurements over an extended period of time. In either Survey or Single Chamber Long-Term mode, conserving power can be an issue. LI-COR has developed a few tips on how to extend battery life in both configurations. Using the…
Read More...Tags: battery power, chamber, LI-8100A, Soil Flux, survey measurement
Posted in LI-8100A, Soil Flux, Tech Tips | No Comments »
New Tech Note Available
Monday, January 5th, 2009
LI-COR has published a new Technical Note titled “Comparison of Quantum Sensors with Different Spectral Sensitivities”, which describes the history and theory behind PAR measurements, a method for assessing measurement errors in PAR sensors, and shows how different types of PAR sensors may introduce errors into measurements. Click here to view the .pdf file.
Read More...Tags: PAR, quantum, sensor, technical note
Posted in Feature Stories, Light Measurement | No Comments »
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