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Month: October 2010

Measure Methane Where it Matters: Part II, Barrow, Alaska

Measure Methane Where it Matters: Part II, Barrow, Alaska

This story is Part II of a three part series investigating methane emissions (click here for Part I).

In the expansive tundra surrounding Barrow, Alaska, where, at times, the population density of caribou exceeds that of people, annual precipitation is less than 5 inches (127 mm). Cloudy days are frequent and any month can bring snowfall. It is a frigid desert. Throughout the short summers, methane gas moves imperceptibly…

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Swapping LI-7500 Sensor Heads

Swapping LI-7500 Sensor Heads

Do you have more than one LI-7500 Open Path CO2/H2O Analyzer? Typically, the serial numbers of the sensor head and control box will match. For example, a sensor head with s/n 75H-1234 goes with control box s/n 75B-1234. However, sometimes you may want to replace the sensor head on one unit with the sensor head from another unit. This may be done for troubleshooting purposes or if you are returning a sensor head for calibration. There are some important points…

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