Archive for 2007
Using the LI-7000 to Measure Small Volumes of CO2
Saturday, October 6th, 2007
In some gas exchange applications, only a small volume of gas (5 ml or less) is available for measurement (as when measuring the respiration of insects or a single fruit, for example). Because this volume is too small to flow through the LI-7000 in a normal fashion, CO2 concentrations must be measured with a different…
Read More...Tags: CO2, gas exchange, LI-7000, respiration, small voume injection
Posted in LI-7000, Tech Tips | No Comments »
LI-6400 CO2 Injector Maintenance
Saturday, October 6th, 2007
One of the most frequent maintenance issues encountered at LI-COR is clogging of the 6400-01 CO2 Injector filters due to oil present in the CO2 cartridges. There are a number of brands of CO2 cartridges; some have more oil present than others. When using cartridges supplied by LI-COR, we recommend that you inspect the filter…
Read More...Tags: CO2, LI-6400XT, maintenance
Posted in LI-6400XT, Photosynthesis, Tech Tips | 2 Comments »
Obtaining Correct (Positive) Values with LI-COR Underwater Radiation Sensors
Saturday, October 6th, 2007
The LI-192 Underwater Quantum Sensor and LI-193 Spherical Quantum Sensor from LI-COR are terminated with two pins that mate with the underwater cable (Figure 1). In order to obtain the correct (positive) readings when using the underwater sensors, it is important to attach the sensor and underwater cable correctly. There is a yellow dot on…
Read More...Tags: LI-192, LI-193, quantum, radiation, sensor, underwater sensor
Posted in LI-192, LI-193, Light Measurement, Tech Tips | No Comments »
Automatic Restart Function after Power Interruption with the LI-8100
Saturday, October 6th, 2007
The LI-8100 has the capability to restart a measurement following a power interruption to the instrument. Enabling this feature requires the user to first reposition a small jumper in the Analyzer Control Unit housing. When the jumper is repositioned, power will be restored to the instrument when it becomes available; note that this function is…
Read More...Tags: LI-8100A, power
Posted in LI-8100A, Soil Flux, Tech Tips | No Comments »
Cellulosic Biomass Study of Miscanthus x giganteus and the LI-6400
Saturday, October 6th, 2007
The use of blended fuels has become a nearly ubiquitous part of our everyday lives. Lately, however, ethanol production has come under increasing scrutiny; questions abound concerning the efficiency of corn ethanol as a renewable source of energy, the possibility of widespread deforestation for the purpose of creating tillable land, and the rising cost of…
Read More...Tags: biofuel, crop science, leaf area, LI-3100, LI-6400XT, Photosynthesis, plant biology
Posted in Area Meters, Feature Stories, Photosynthesis | No Comments »
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