Equipment and Calibration
Equipment history at Twitchell Alfalfa| ALL | | Anemometer || Battery Bank || Camera || CO2 Probe || Data Logger || Forced Diffusion || Gas Analyzer || Heat Flux Plate || Interface || LED sensor || Multiplexer || Narrow Band || Net Radiometer || PAR Sensor || Precipitation || RH & Temp || Soil Moisture Probe || Solar Controller || Solar Panel || Weather Station |
SELECT a.recno, a.eh_date, a.eh_loc1, a.eh_loc2, IF(a.eh_loc2=:loc, a.eh_locref2, a.eh_locref1) AS ref, a.eh_locref2, a.eh_title, a.eh_notes, a.eh_id, b.serialno, b.equip, b.modelno FROM equiphist a INNER JOIN equiplist b ON a.eh_id=b.recno WHERE (a.eh_loc1=:loc1 OR a.eh_loc2=:loc2) AND b.equip=:eq ORDER BY b.serialno, a.eh_date
| Date | Serial No. | Model | Action | Ref | Notes |
|---|---|---|---|---|---|
| Multiplexer | |||||
| 2014-05-13 | 1164 | AM16/32A | Installed | Multiplexer Thermocouple | Installed on the Alfalfa tower to replace AM25T sn 6767 that failed. This multiplexor was only reading 15 soil thermocouples, however it did not seem to be working either as all TCs were reporting nearly the same values. It was left in place just in case. |
| 2014-06-05 | 1164 | AM16/32A | Removed | Multiplexer Thermocouple | Removed from Alfalfa to be replaced by repaired AM25T sn 6767 |
| 2015-06-09 | 1164 | AM16/32A | Installed | Multiplexer Soil CO2 | Installed with the new soil CO2 box. |
| 2018-06-13 | 1164 | AM16/32A | Installed | Multiplexer Soil CO2 | Installed at East Pond to replace one with worn out channels. This one came off the decommissioned TA site. |
| 2013-05-24 | 11662 | AM16/32B | Installed | Multiplexer Radiation | Installed on the radiation post in the alfalfa field west of the scaffolding to collect the radiation data. |
| 2018-06-13 | 11662 | AM16/32B | Removed | Multiplexer Radiation | Removed with Twitchell Alfalfa site decommissioning. |
| 2014-08-13 | 14049 | AM416 | Installed | Installed with the soil co2 system at Alfalfa | |
| 2015-06-09 | 14049 | AM416 | Removed | Removed from Twitchell Aflalfa with the soil CO2 system. An entire new CR1000 based system was swapped in. | |
| 2013-05-24 | 6767 | AM25T | Installed | Multiplexer Thermocouple | Installed in the box at the Alfalfa tower to collect data from soil sensors |
| 2014-05-13 | 6767 | AM25T | Removed | Multiplexer Thermocouple | Removed from the Alfalfa tower. This multiplexor failed in the field over a couple of weeks. It was replaced with AM16/32 sn 1164 |
| 2014-06-05 | 6767 | AM25T | Installed | Multiplexer Thermocouple | Reinstalled at Alfalfa after being repaired by Campbell. Removed AM16/32 sn 1164 |
| 2016-03-24 | 6767 | AM25T | Moved | Multiplexer Thermocouple | Moved the AM25T from the data logger box at the tower to the soil CO2 data logger box. New SoilT TC profiles will go in out there. |
| 2018-06-13 | 6767 | AM25T | Removed | Multiplexer Thermocouple | Removed with Twitchell Alfalfa site decommissioning. |