| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|
| 2937 |
2017-07-12 |
Twitchell Alfalfa |
Removed |
Lab none |
Removed from Twitchell Alfalfa because it was reading 0. It was in set A, 8 cm (the second depth). |
| 2167 |
2016-02-11 |
Lab none |
Installed |
Twitchell Alfalfa |
Installed at Alfalfa Profile A at 8cm. The existing probe sn Y0710013 was removed due to low readings. |
| 1881 |
2015-06-09 |
Twitchell Alfalfa |
Removed |
Lab none |
Removed from Set B at -8cm with upgrade of soil CO2 system |
| 1871 |
2014-09-08 |
Lab none |
Installed |
Twitchell Alfalfa |
Installed in Alfalfa Set B -8cm to replace sn K1340006 |
| 1528 |
2014-08-27 |
Twitchell Alfalfa |
Removed |
Lab none |
Removed from profile B at 8cm due to reading zero. Replaced by sn K1340006. |
| 1865 |
2014-08-13 |
Lab none |
Installed |
Twitchell Alfalfa |
Installed near the radiometers at Alfalfa in Set B to the north at -8cm |
| 1244 |
2014-01-29 |
Lab none |
Installed |
Sherman Island |
Reinstalled after lab calibration Set B at -8cm |
| 1428 |
2014-01-27 |
Lab none |
Calibration |
Lab none |
Trueppm = Probeppm*0.9972 + -319.4; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 3056ppm, and 10000ppm. Ta=22.7C, P=102.1kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Patty. |
| 2084 |
2014-01-23 |
Sherman Island |
Location |
Sherman Island |
Sherman Profile B -8cm |
| 1395 |
2011-12-13 |
Lab none |
Calibration |
Lab none |
Trueppm = Probeppm*1.039 + 10.06; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 406ppm, 2238ppm, and 10000ppm (N2 bal). Ta=24.6C, P=101.7kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Sara. |
| 1388 |
2011-10-06 |
Lab none |
Calibration |
Lab none |
Trueppm = Probeppm*1.028 + 1.298; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 406ppm, 2238ppm, and 10000ppm (N2 bal). Ta=26.2C, P=101.4kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Sara. |
| 1383 |
2011-03-14 |
Lab none |
Calibration |
Lab none |
Trueppm = Probeppm*1.062 + 47.47; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 597ppm, 2238ppm, and 10000ppm (N2 bal). Ta=25.3C, P=102.5kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Melanie. |
