Field Notes

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Twitchell Rice: 2009-12-09 12:30:00 (DOY 343)
Author: Joe Verfaillie
Others:

Summary: Solar and batteries dead. Swapped 7500.

Twitchell,
12/9/2009

Arrived about 12:30. Clear, sunny, cold, very little variable wind. Mostly tundra swans in field. Water level looks high.

Generator was running with full tank of diesel. The computer was off, I think the solar and batteries died over night. I swapped the computer power to the generator AC line.

Pressure on LGR very low ~89Torr. 2um filter seemed okay. Adjusted bypass valve to correct pressure. Output baffle on pump had been removed ï¿½ replaced

Swapped Li-7500s. sn 0041 off sn 0042 with new internal chemicals and new firmware on.

LGR clock changed from 12:30 to 13:30, LGR restarted
13:29, 1.9696ppm, 4725.06ppm 410.14ppm, 24.40C, 143.45Torr, 17.351usec, 10Hz

Changed data logger clock sync from midnight to 00:15 to avoid double readings at midnight.

0 photos found

6 sets found

12 TW_met graphs found