| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|
| 6029 |
2022-10-05 |
Tonzi-SoilCO2 CO2 Probe Open Profile -0.08 |
Removed |
Lab none |
The soil co2 gradient system has not been in good condition for a long time. Finally getting around to removing the equipment from the field: Open -8cm |
| 3056 |
2017-09-14 |
Lab none |
Installed |
Tonzi CO2 Probe Open Profile -0.08 |
Installed at Tonzi in the Open profile at -8cm after lab calibration. This is a new installation with new holes dug. |
| 3011 |
2017-08-25 |
Tonzi CO2 Probe Open Profile -0.08 |
Removed |
Lab none |
Removed from Tonzi Open profile at -8 cm position for calibration |
| 2190 |
2016-02-23 |
Lab none |
Installed |
Tonzi CO2 Probe Open Profile -0.08 |
Installed in the Tonzi Open profile at -8cm after lab calibration. |
| 1870 |
2014-09-08 |
Twitchell Alfalfa |
Removed |
Lab none |
Removed from Alfalfa Set B -8cm because of low readings. Replaced by F4960018 |
| 1529 |
2014-08-27 |
Lab none |
Installed |
Twitchell Alfalfa |
Installed in profile B at 8cm to replace sn F4960018 due to zero reading. |
| 2093 |
2014-06-17 |
Sherman Island |
Removed |
Sherman Island |
Removed from Sherman profile A at -16cm due to low readings. Replaced by sn G0150037 |
| 2092 |
2014-04-10 |
Lab none |
Installed |
Sherman Island |
Installed in Sherman profile A at -16cm to replace sn G0150035 |
| 1453 |
2014-04-08 |
Lab none |
Calibration |
Lab none |
Trueppm = Probeppm*1.002 + -37.28; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 2238ppm, 3056ppm, and 10000ppm. Ta=25.1C, P=101.5kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Joe. |
