Posts Tagged ‘multiplex’

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Adjusting the LI-8150 Flow Rate

Wednesday, February 15th, 2012

First generation LI-8150 multiplexers, which used a rotary vane pump, provided an adjustable flow rate of 2 to 4 LPM. This functionality was lost when the LI-8150 was upgraded to the more rugged diaphragm pump. However, control over the multiplexer flow rate can be restored through a simple hardware modification. This is accomplished by replacing…

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Posted in LI-8100A, Tech Tips | No Comments »

Studies in German Grasslands Reveal the Effects of Climate Change

Wednesday, May 4th, 2011

CO2-Enrichment-Ring2

In the heart of Germany, in the Lückenbach rivulet floodplain, the University of Giessen and the Hessian Agency for Environment and Geology operate the Environmental Monitoring and Climate Impact Research Station Linden. The research site is a 4.5-hectare, semi-natural permanent grassland typical of German lowlands. Grasslands like this represent roughly 13% of the agricultural and…

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Posted in Feature Stories, LI-8100A | 4 Comments »

UNL Research Fields Monitoring Carbon Storage Damaged by Nebraska Storm

Wednesday, September 15th, 2010

Damaged Crop Field near Mead, Nebraska

  A late afternoon storm on Monday, September 13, tore through a University of Nebraska-Lincoln agricultural research center located near Mead, Nebraska in Saunders County.  Nearly $800,000 of the estimated $1.55 million in damages suffered was crop damage from heavy rain, hail, and high winds.  1800 acres of corn and soybeans were damaged, with 500 acres being…

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Posted in Soil Flux, What's New | No Comments »

Why Multiplex?

Sunday, July 5th, 2009

mulitplex_field

Soil CO2 flux (FCO2) is usually the largest component of ecosystem respiration. It is also important for understanding soil carbon sequestration potential and soil carbon dynamics. FCO2 has a strong temporal variation over the course of a day or a season because of changes in soil temperature, soil moisture, above-ground vegetation physiological activities, and other…

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Posted in Feature Stories, Soil Flux | 2 Comments »

Conserving Power with the LI-8100/8150

Sunday, April 5th, 2009

TechTip2-2

Researchers often want to set up the LI-8100 Analyzer Control Unit and LI-8150 Multiplexer to collect soil CO2 flux measurements over an extended period of time, with several Long Term Chambers in operation. While this system is designed to operate with AC power, LI-COR realizes this is not always available in remote locations. To solve…

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