| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|
| 1171 |
2014-01-14 |
Lab none |
Maintenance |
Lab none |
Due to corrosion, the probe was taken apart and left to sit in vinegar overnight. The following day I changed the membrane and filled it with electrolyte solution and it seemed to work fine after that (it was reading ~40 mV as expected). |
| 1170 |
2014-01-10 |
Mayberry DO Sensor A |
Removed |
Lab none |
The probe was pulled since it was reading high and looked corroded.
|
| 941 |
2013-02-28 |
Lab none |
Installed |
Mayberry DO Sensor A |
Installed in the surface at Mayberry about 10 cm below surface. |
| 938 |
2013-02-26 |
Lab none |
Maintenance |
Lab none |
This sensor was pulled from the rice since the field was drained. I (Sara) cleaned it and replaced the membrane since it had been a while. I left it without electrolyte solution until we install it in the field again to minimize corrosion. |
| 934 |
2013-02-21 |
Twitchell Rice DO Sensor |
Removed |
Lab none |
Removed from the now drained field at Tiwtchell. There will be no water in the field until after the rice is up late this coming spring. |
| 878 |
2013-01-03 |
West Pond 0 |
Moved |
Twitchell Rice DO Sensor |
This sensor was moved from the upper location at West Pond to near the well at the Twitchell Rice. The sensor was left laying sideways on the bottom of the flooded field. |
| 796 |
2012-09-06 |
Lab none |
Installed |
West Pond DO Sensor Lower |
DO-04 was resintalled in the deeper location at West Pond. The lab check went fine and it has been decided that the low values are correct and that the water is just very oxygen poor. |
| 795 |
2012-08-30 |
West Pond DO Sensor Lower |
Removed |
Lab none |
DO-04 was removed from the water at West Pond due to continued low readings. The sensor will be checked in the lab and reinstalled. |
| 794 |
2012-08-16 |
West Pond DO Sensor Lower |
Serviced |
West Pond DO Sensor Lower |
DO-04 was serviced in the field due to continued unexpectedly low readings. The inside was rinsed with vinegar and scrubbed with a tooth brush. The electrolyte was replaced. |
| 793 |
2012-08-02 |
West Pond DO Sensor Lower |
Serviced |
West Pond DO Sensor Lower |
DO-04 was serviced in the field due to unexpectedly low readings. The electrolyte was replaced. |
| 537 |
2012-04-17 |
Lab none |
Installed |
West Pond DO Sensor Lower |
Installed on post northwest of scaffolding at west pilot pond. Not running because of forgotten power connector. |
| 807 |
2012-04-16 |
Lab none |
Calibration |
Lab none |
DO-04 was calibrated in the lab: M = 8.56/35.34089 in (mg/L)/mV (aka ppm/mV) (@ 23C) @15cm below water |
