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 |
|---|---|---|---|---|---|
| Battery Bank | |||||
| 2013-05-24 | BB-TA | BB-Fab | Installed | Two Flooded Lead Acid (FLA) batteries model 27DCMJ deep cycle batteries with Jan 2012 stickers were installed in parallel for a 12VDC battery bank. The batteries are in then open. | |
| 2013-06-05 | BB-TA | BB-Fab | Upgrade | The batteries were moved into an insulated wooden box. | |
| 2013-11-25 | BB-TA | BB-Fab | Upgrade | A third older battery was added in parallel outside the wooden box due to low voltage power outages. | |
| 2014-08-13 | BB-TA | BB-Fab | Upgrade | Two batteries for the soil CO2 system were brought over from Sherman. These two batteries are in series for 24V and are isolated for the time being from the solar system. | |
| 2014-08-15 | BB-TA | BB-Fab | Upgrade | The older external third battery was removed. The original two batteries were rewired into series and the other two isolated batteries were integrated. The system is now two pairs of batteries for a 24V system. | |
| 2014-09-04 | BB-TA | BB-Fab | Upgrade | A line was added to one of the external batteries to pull 12V off for the 6400. | |
| 2015-09-15 | BB-TA | BB-Fab | Notes | The batteries have started to have problems supplying 12V from the 6400. | |
| 2015-10-20 | BB-TA | BB-Fab | Notes | The tower started losing power regularly over night. Time to swap out the batteries. | |
| 2015-11-11 | BB-TA | BB-Fab | Upgrade | All four batteries were swapped out. Four new 27DCMJ batteries were installed. Two of the old batteries had Jan 2012 stickers and may not be in such bad shape. | |
| 2016-04-01 | BB-TA | BB-Fab | Upgrade | I put the battery bank in a new battery box, a Rubbermaid 35-gallon Action Packer. The four batteries fit with room to spare. | |
| 2018-03-07 | BB-TA | BB-Fab | Maintenance | The battery bank at TA was rewired from to pairs (24V) to four in parallel (12V). | |
| 2018-06-05 | BB-TA | BB-Fab | Removed | The site was shut down and the battery bank with action packer was removed for use at Vaira soil co2. | |
| 2018-06-05 | BB-VR_soilco2 | BB-Fab | Replaced | The battery bank from Twitchell Alfalfa was installed to replace the original batteries here that had a catastrophic failure | |