Field Notes

<--2011-01-18 12:30:00 | 2011-02-08 11:30:00-->
Other sites visited today: Sherman Island | Mayberry
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Twitchell Rice: 2011-01-28 09:30:00 (DOY 28)
Author: Joe Verfaillie
Others: Jaclyn

Summary: Installed DO, Plantcam, Line conditioner. Generator and LGR up and running.

Twitchell
1/28/2010

I arrived at Twitchell about 9:30 with Jaclyn. It was cold and damp. Seems the fog had just lifted from the ground and was hanging low overhead. There was little to no wind. I could often hear geese flying overhead but rarely able to see them. Some duck on adjacent fields. Some of the small test fields have been drained.

The generator was off when we got there but I got ahold of Antonio and he came to start up the generator about 11:30.

Antonio 916-417-1874

I installed the new line conditioner. It reported the voltage as “very high” and didn’t seem to be regulating it – voltage coming out the back was 160VAC. I’m not sure what to do about this. Transformers that can handle this sort of power are expensive ~$1000. I’ll talk with Jim about the generator.

I forgot to bring a keyboard and mouse for the LGR, but by some miracle it retained the correct settings that I was able to set last time just before it crashed when the generator went down.

LGR: 11:45PST, 6.43C, 144.80Torr, 17.345usec, 2.929ppm, 10Hz

We swapped the LI7500 for calibration. 1594 went on and 0042 came off.

I also installed the new plantcam. I need to setup a 12VDC line for it yet.

Jaclyn installed a new DO sensor.

I copied data and swapped cards.

0 photos found

6 sets found

12 TW_met graphs found