Equipment and Calibration
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Report: Forced Diffusion Bouldin Alfalfa - 2019-08-27
History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 6626 | 2024-03-26 | Lab none | Installed | Vaira Forced Diffusion North | Installed in the north location at Vaira after factory repair. |
| 6588 | 2024-03-04 | Factory none | Returned | Lab none | Returned from Eosense after repair and calibration. CO2 Sensor Replacement 0.00, Recalibration 0.00,
Flux Calibration .00 |
| 6589 | 2023-10-19 | Lab none | Shipped | Factory none | Shipped to Eosense. The data has been super noisy since mid-March. |
| 6258 | 2023-04-11 | Bouldin Alfalfa Forced Diffusion A | Removed | Lab none | Removed from BA underneath the tower. The data has been super noisy since mid March. The cable is still on the tower. |
| 5379 | 2021-07-20 | Bouldin Alfalfa Forced Diffusion A | Maintenance | Bouldin Alfalfa Forced Diffusion A | Performance check done. Referenced reset to 400ppm. Average Flux: -0.1, 0.07 STDEV Average ATM: 402.1ppm, 48.5C Average Soil: 398.1ppm, 48.2C |
| 5046 | 2020-12-18 | Lab none | Installed | Bouldin Alfalfa Forced Diffusion A | Installed to replace the FD Chamber with the high temperature startup problems. |
| 5038 | 2020-12-17 | Factory none | Returned | Lab none | Returned from repair at Eosense. They replaced the CO2 board and sensor, the internal battery and the conical membranes. They did and FD calibration and a FD FGen on 2020-12-14. |
| 4863 | 2020-10-08 | Lab none | Shipped | Factory none | Sent to Eosense for evaluation and repair. |
| 4862 | 2020-09-28 | Lab none | Tested | Lab none | The pump is running but both CO2 signals are just noise. Probably another dead IRGA. Also there's a scratch in oneof the atmospheric diffusion membranes. |
| 4780 | 2020-09-23 | Bouldin Alfalfa Forced Diffusion A | Removed | Lab none | Removed from BA and brought back to the lab for testing because of noisy data. It was replaced by sn FD20180048. |
| 4419 | 2020-04-17 | Bouldin Alfalfa Forced Diffusion A | Notes | Bouldin Alfalfa Forced Diffusion A | I tried to add a collar to this FD chamber, but the collar did not fit. I ended up reinstalling it in the same location (NE corner under the tower) over bare soil. |
| 3679 | 2018-08-07 | Lab none | Installed | Bouldin Alfalfa Forced Diffusion A | Installed under the BA scaffolding over bare soil. |
| 3613 | 2018-07-26 | Bouldin Alfalfa Forced Diffusion A | Removed | Lab none | Removed from BA because it was not turning on after power cycling and brought back to the lab for testing. I think the chamber is fine, just needs to be off for 1 minute before being turned back on. |
| 3592 | 2018-07-12 | Lab none | Installed | Bouldin Alfalfa Forced Diffusion A | Installed at BA under the scaffolding. Sampling frequency is 5 min. |
| 3528 | 2018-06-13 | Twitchell Alfalfa Forced Diffusion | Removed | Lab none | Removed with Twitchell Alfalfa site decommissioning. |
| 3390 | 2018-04-05 | Lab none | Installed | Twitchell Alfalfa Forced Diffusion | Installed at TA in the soil between the soilco2 datalogger enclosure and the solar panels. We tried to sync the sensor time to system time, but the change was not saved. |
| 3365 | 2018-03-21 | Factory | Returned | Lab none | Returned from Eosense after a long, long time. Last time it was immediately returned to them after coming back from having the pump replaced because the IRGA seemed to be dead. |
| 3183 | 2017-10-27 | Lab none | Repair | Factory | Sent back to Eosense for repair. |
| 3182 | 2017-10-13 | Twitchell Alfalfa Forced Diffusion | Removed | Lab none | Removed from TA because it was giving bad readings (200? ppm +/- 200? ppm). |
| 3081 | 2017-09-21 | Lab none | Installed | Twitchell Alfalfa Forced Diffusion | Reinstalled at TA after testing in the lab. It is now on its own individual DC-DC converter to step down from 24V to 12V. |
| 3079 | 2017-09-19 | Twitchell Alfalfa Forced Diffusion | Removed | Lab none | Removed from the field because it has not been collecting data and some of the data were 0. Brought back to the lab for troubleshooting. |
| 3045 | 2017-09-06 | Lab none | Installed | Twitchell Alfalfa Forced Diffusion | Reinstalled with new 90 degree cable after factory refurb. |
| 2994 | 2017-08-28 | Factory | Received | Lab none | Received FD chamber back in the lab. No documentation about what they inspected/fixed. |
| 3030 | 2017-07-05 | Lab none | Shipped | Factory | Shipped to Eosense for replacement of failed pump. Eosense provided shipping on UPS. |
| 2993 | 2017-06-23 | Twitchell Alfalfa Forced Diffusion | Removed | Lab none | Removed from Twitchell Alfalfa and brought back to lab to send back to Eosense |
| 2384 | 2016-07-15 | Lab none | Installed | Twitchell Alfalfa Forced Diffusion | Installed after testing in the lab. It seemed to work with no changes to the set up. |
| 2351 | 2016-07-07 | Twitchell Alfalfa Forced Diffusion | Removed | Lab none | Removed from the Twitchell Alfalfa. It does not seem to be getting power even connected to a independent 12V battery. Brought in for testing. |
| 2350 | 2016-06-06 | Lab none | Installed | Twitchell Alfalfa Forced Diffusion | Installed at Twitchell Alfalfa. Powered from CR1000 power connector, but did not seem to be running. Could not find the software to check on it. |