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) ORDER BY b.equip, a.eh_date, field(a.eh_title,'Calibration', 'Removed', 'Installed')
| Date | Serial No. | Model | Action | Ref | Notes |
|---|---|---|---|---|---|
| Anemometer | |||||
| 2013-05-24 | 120908 | WM 1590 | Installed | Anemometer | Installed on the northwest corner of the scaffolding at the Alfalfa site. |
| 2016-01-12 | 120908 | WM 1590 | Removed | Anemometer | Removed from field for calibration |
| 2016-01-12 | 153805 | WM 1590 | Installed | Anemometer | Installed to replace old sonic--brand new |
| 2017-01-05 | 153805 | WM 1590 | Removed | Anemometer | Removed from Twitchell Alfalfa tower for firmware upgrade. Replaced by sn 153802. |
| 2017-01-05 | 153802 | WM 1590 | Installed | Anemometer | Installed at Twitchell Alfalfa to replace sn 153805. Brand new. |
| 2018-06-13 | 153802 | WM 1590 | Removed | Anemometer | Removed with Twitchell Alfalfa site decommissioning. |
| 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-VR_soilco2 | BB-Fab | Replaced | The battery bank from Twitchell Alfalfa was installed to replace the original batteries here that had a catastrophic failure | |
| 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. | |
| Camera | |||||
| 2016-05-17 | 0030F4D2148D | SD130BN | Installed | Installed on the camera post to over lap with existing Canon camera | |
| 2017-09-26 | 0030F4D2148D | SD130BN | Removed | Camera | Removed from Twitchell Alfalfa because it has been recording bad images with psychedelic colors. |
| 2017-10-26 | 0030F4D2148D | SD130BN | Installed | Camera | Reinstalled at Twitchell Alfalfa. It is missing the plastic slide that clips into the enclosure - to be installed next time. |
| 2018-06-13 | 0030F4D2148D | SD130BN | Removed | Camera | Removed with Twitchell Alfalfa site decommissioning. |
| CO2 Probe | |||||
| 2014-08-13 | K1340005 | GMP221 | Installed | Installed near the radiometers at Alfalfa in Set A to the south at -2cm | |
| 2014-08-13 | K1340007 | GMP221 | Installed | Installed near the radiometers at Alfalfa in Set A to the south at -8cm | |
| 2014-08-13 | G0150037 | GMT221 | Installed | Installed near the radiometers at Alfalfa in Set A to the south at -16cm | |
| 2014-08-13 | F4960019 | GMT221 | Installed | Installed near the radiometers at Alfalfa in Set B to the north at -2cm | |
| 2014-08-13 | F4960018 | GMT221 | Installed | Installed near the radiometers at Alfalfa in Set B to the north at -8cm | |
| 2014-08-13 | Y0710013 | GMP221 | Installed | Installed near the radiometers at Alfalfa in Set B to the north at -16cm | |
| 2014-08-13 | Z2720011 | GMP222 | Installed | Installed near the radiometers at Alfalfa in forced diffusion ambient cell | |
| 2014-08-13 | H1630066 | GMP222 | Installed | Installed near the radiometers at Alfalfa in the forced diffusion soil cell | |
| 2014-08-27 | Z2720011 | GMP222 | Removed | Removed from Forced Diffusion probe 1 because it was reading zero. Replaced by sn Z2720014 | |
| 2014-08-27 | F4960019 | GMT221 | Removed | Removed from profile B at 2cm due to reading zero. Replaced by sn Y2009100. | |
| 2014-08-27 | F4960018 | GMT221 | Removed | Removed from profile B at 8cm due to reading zero. Replaced by sn K1340006. | |
| 2014-08-27 | Z2720014 | GMP222 | Installed | Installed in Forced Diffusion probe 1 to replace sn Z2720011 due to zero reading | |
| 2014-08-27 | Y2009100 | GMP221 | Installed | Installed in profile B at 2cm to replace sn F4960019 due to zero reading. | |
| 2014-08-27 | K1340006 | GMP221 | Installed | Installed in profile B at 8cm to replace sn F4960018 due to zero reading. | |
| 2014-09-08 | K1340006 | GMP221 | Removed | Removed from Alfalfa Set B -8cm because of low readings. Replaced by F4960018 | |
| 2014-09-08 | F4960018 | GMT221 | Installed | Installed in Alfalfa Set B -8cm to replace sn K1340006 | |
| 2014-10-09 | Z2720014 | GMP222 | Removed | Removed from the FD ambient chamber due to high readings. Replaced by sn Z2720011. | |
| 2014-10-09 | Z2720011 | GMP222 | Installed | Installed in the FD ambient chamber to replace sn Z2720014 that had high readings. | |
| 2014-10-30 | GP2013ex02 | GP-001ex | Installed | Installed at -16cm at Alfalfa | |
| 2014-10-30 | GP2013ex03 | GP-001ex | Installed | Installed at -8cm at Alfalfa | |
| 2014-10-30 | GP20140009 | GP-001 | Installed | Installed at -2cm at Alfalfa | |
| 2015-06-09 | K1340005 | GMP221 | Removed | Removed from Set A at -2cm with upgrade of soil CO2 system | |
| 2015-06-09 | K1340007 | GMP221 | Removed | Removed from Set A at -8cm with upgrade of soil CO2 system | |
| 2015-06-09 | G0150037 | GMT221 | Removed | Removed from Set A at -16cm with upgrade of soil CO2 system | |
| 2015-06-09 | Y2009100 | GMP221 | Removed | Removed from Set B at -2cm with upgrade of soil CO2 system | |
| 2015-06-09 | F4960018 | GMT221 | Removed | Removed from Set B at -8cm with upgrade of soil CO2 system | |
| 2015-06-09 | Y0710013 | GMP221 | Removed | Removed from Set B at -16cm with upgrade of soil CO2 system | |
| 2015-06-09 | Z2720011 | GMP222 | Removed | Removed from forced diffusion ambient cell with upgrade of soil CO2 system | |
| 2015-06-09 | H1630066 | GMP222 | Removed | Removed from forced diffusion soil cell with upgrade of soil CO2 system | |
| 2015-06-09 | L2058002 | GMM221 | Installed | Installed in Set A at -2cm with upgrade of soil CO2 system | |
| 2015-06-09 | L2058003 | GMP221 | Installed | Installed in Set A at -*cm with upgrade of soil CO2 system | |
| 2015-06-09 | L2058006 | GMP221 | Installed | Installed in Set A at -16cm with upgrade of soil CO2 system | |
| 2015-06-09 | L2058005 | GMP221 | Installed | Installed in Set B at -2cm with upgrade of soil CO2 system | |
| 2015-06-09 | L2058007 | GMP221 | Installed | Installed in Set B at -8cm with upgrade of soil CO2 system | |
| 2015-06-09 | L2058001 | GMM221 | Installed | Installed in Set B at -16cm with upgrade of soil CO2 system | |
| 2015-06-09 | L2030063 | GMM222 | Installed | Installed in the forced diffusion ambient cell with upgrade of soil CO2 system | |
| 2015-06-09 | L2030064 | GMM222 | Installed | Installed in the forced diffusion soil cell with upgrade of soil CO2 system | |
| 2015-08-19 | GP2013ex03 | GP-001ex | Removed | Removed from the 8cm level at Twitchell Alfalfa due to drop outs in the data. Replaced by sn GP20140026 | |
| 2015-08-19 | GP20140026 | GP-001 | Installed | Installed at the 8cm level at Twitchell Alfalfa to replace sn GP2015ex03 that was dropping out. | |
| 2015-09-30 | GP20140009 | GP-001 | Removed | This 2% probe was removed from the 2cm location at Alfalfa due to | |
| 2015-09-30 | GP20140023 | GP-001 | Installed | This 2%(2.4% analog) probe was installed at the 2cm location to replace sn GP20140009. | |
| 2016-01-12 | L2030063 | GMM222 | Removed | Removed from Twitchell Alfalfa with the FD chamber due to torn membranes. | |
| 2016-01-12 | L2030064 | GMM222 | Removed | Removed from Twitchell Alfalfa with the FD chamber due to torn membranes. | |
| 2016-01-21 | L2058003 | GMP221 | Removed | Removed from Alfalfa set A at 8cm due to maxed out readings. | |
| 2016-02-11 | Y0710013 | GMP221 | Removed | Removed from Alfalfa Profile A at 8cm due to low readings. Replaced by sn F4960018 | |
| 2016-02-11 | F4960018 | GMT221 | Installed | Installed at Alfalfa Profile A at 8cm. The existing probe sn Y0710013 was removed due to low readings. | |
| 2016-04-28 | GP20140023 | GP-001 | Removed | Probe was reading really high numbers. Brought back to lab for repairs. Replaced with sn 20140084 | |
| 2016-04-28 | GP20140084 | GP-001 | Installed | Replaced probe sn GP20140023 at 2cm depth since that was reading too high. | |
| 2017-07-12 | F4960018 | GMT221 | Removed | Removed from Twitchell Alfalfa because it was reading 0. It was in set A, 8 cm (the second depth). | |
| 2018-03-07 | GP20140084 | GP-001 | Removed | Removed from the -2cm location at Twitchell Alfalfa because the readings have been funky for a while. Probably will be replaced at a later date. | |
| 2018-03-07 | GP20140026 | GP-001 | Removed | Removed from the -8cm location at Twitchell Alfalfa because the readings have been funky for a while. Probably will be replaced at a later date. | |
| 2018-03-07 | GP2013ex02 | GP-001ex | Removed | Removed from the -16cm location at Twitchell Alfalfa because the readings have been funky for a while. Probably will be replaced at a later date. | |
| 2018-06-13 | L2058001 | GMM221 | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | L2058007 | GMP221 | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | L2058005 | GMP221 | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | L2058006 | GMP221 | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | K1340005 | GMP221 | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | L2058002 | GMM221 | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| Data Logger | |||||
| 2013-05-24 | 47108 | CR1000 | Installed | Data Logger Met | Installed in the box at the Alfalfa tower to collect data from soil sensors and the HMP60 sn G4540021 |
| 2013-05-24 | 35474 | CR10X | Installed | Data Logger Radiation | Installed on the radiation post in the alfalfa field west of the scaffolding to collect the radiation data. |
| 2013-05-24 | 25799 | CR10X | Installed | Data Logger Radiation | Installed with the initial set up of the site. This data logger collects the radiation data and is located independently in the field to the west of the main tower. |
| 2015-06-09 | 25799 | CR10X | Removed | Data Logger Radiation | Removed from Twitchell Alfalfa with the soil CO2 system. An entirely new CR1000 based system was swapped in. |
| 2015-06-09 | 4190 | CR1000 | Installed | Data Logger Soil CO2 | Installed in the soil CO2 system at Alfalfa with box swap. |
| 2016-12-21 | 35474 | CR10X | Removed | Data Logger Radiation | Removed from Twitchell Alfalfa where is was recording data from the radiometers. The radiometers have been moved to the met CR1000. |
| 2017-08-23 | 47108 | CR1000 | Upgrade | Data Logger Met | The OS was upgraded from probably v24 to v31.08. OS v31.08 is FAT32 and reset the CR1000 to factory settings. |
| 2017-12-19 | 2303 | CR23X | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa | |
| 2018-02-13 | 48042 | CR10X | Installed | Data Logger Diffuse PAR | Installed in the met logger box to run the diffuse PAR RSB, fixing problem with the ppt not being recorded properly in the fast cycle on the CR1000. |
| 2018-06-13 | 47108 | CR1000 | Removed | Data Logger Met | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 4190 | CR1000 | Removed | Data Logger Soil CO2 | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 48042 | CR10X | Removed | Data Logger Diffuse PAR | Removed with Twitchell Alfalfa site decommissioning. |
| Forced Diffusion | |||||
| 2014-08-13 | FDC-11-13-006 | FD Classic | Installed | Installed with the other soil co2 equipment at Twithell Alfalfa. | |
| 2016-01-12 | FDC-11-13-006 | FD Classic | Removed | Removed from Twitchell Alfalfa because the diffusion membranes were torn. | |
| 2016-06-06 | FD20160001 | eosFD | Installed | 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. |
| 2016-07-07 | FD20160001 | eosFD | Removed | Forced Diffusion | Removed from the Twitchell Alfalfa. It does not seem to be getting power even connected to a independent 12V battery. Brought in for testing. |
| 2016-07-15 | FD20160001 | eosFD | Installed | Forced Diffusion | Installed after testing in the lab. It seemed to work with no changes to the set up. |
| 2017-06-23 | FD20160001 | eosFD | Removed | Forced Diffusion | Removed from Twitchell Alfalfa and brought back to lab to send back to Eosense |
| 2017-09-06 | FD20160001 | eosFD | Installed | Forced Diffusion | Reinstalled with new 90 degree cable after factory refurb. |
| 2017-09-19 | FD20160001 | eosFD | Removed | Forced Diffusion | 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. |
| 2017-09-21 | FD20160001 | eosFD | Installed | 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. |
| 2017-10-13 | FD20160001 | eosFD | Removed | Forced Diffusion | Removed from TA because it was giving bad readings (200? ppm +/- 200? ppm). |
| 2018-04-05 | FD20160001 | eosFD | Installed | 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. |
| 2018-06-13 | FD20160001 | eosFD | Removed | Forced Diffusion | Removed with Twitchell Alfalfa site decommissioning. |
| Gas Analyzer | |||||
| 2013-05-24 | 75H-2180 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the northwest corner of the scaffolding at the Alfalfa site with box 0674 |
| 2013-11-20 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2013-05-20 AGC=94 SDM=1 DAC1=- DAC2=- Ambient P=99.86kPa, Tair=20.06C, Tdew=12.68C Zero air at 1500psi, God CO2 421.22 at 1550 Tdewspan=15.18 CO2 zero 0.9133 -> 0.9148 Offset: 6.58ppm CO2 span 1.0091 -> 1.0156 Offset: -3.52ppm H2O zero 0.884 -> 0.8791 Offset: -28.4ppm H2O span 0.9991 -> 1.0019 Offset: 0.05ppm Notes: |
| 2013-08-28 | TG1-0155 | LI-7700 | Installed | Gas Analyzer CH4 | Installed on the Twitchell Alfalfa tower with washer box. Plugged in to the existing 7550 box. |
| 2013-09-11 | 75H-2180 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Alfalfa tower for calibration. Replaced by sn 0065. |
| 2013-11-20 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2013-05-20 AGC=94 SDM=1 DAC1=- DAC2=- Ambient P=99.86kPa, Tair=20.06C, Tdew=12.68C Zero air at 1500psi, God CO2 421.22 at 1550 Tdewspan=15.18 CO2 zero 0.9133 -> 0.9148 Offset: 6.58ppm CO2 span 1.0091 -> 1.0156 Offset: -3.52ppm H2O zero 0.884 -> 0.8791 Offset: -28.4ppm H2O span 0.9991 -> 1.0019 Offset: 0.05ppm Notes: |
| 2013-09-11 | 0065 | LI-7500A | Installed | Gas Analyzer CO2/H2O | installed on the Alfalfa tower to replace sn 2180 for calibration |
| 2014-04-02 | 0065 | LI-7500A | Calibration | Lab | Last calibration: 2013-09-11 AGC=73.1 SDM=1 DAC1=- DAC2=- Ambient P=100.27kPa, Tair=19.36C, Tdew=6.05C Zero Air at 1400psi, God CO2 421.22 at 1500 Tdewspan=15.27 CO2 zero 0.8897 -> 0.8899 Offset: .82ppm CO2 span 1.0041 -> 1.0062 Offset: -0.68ppm H2O zero 0.704 -> 0.7040 Offset: 0.2ppm H2O span 0.9959 -> 0.9932 Offset: 0.06ppm Notes: Calibrated by Joe |
| 2014-02-25 | TG1-0155 | LI-7700 | Removed | Gas Analyzer CH4 | Removed from the Alfalfa tower along with its wash box to be installed on the East End Tower to replace sn TG1-0203 that was returned to Frank |
| 2014-02-25 | TG1-0155 | LI-7700 | Installed | Gas Analyzer CH4 | Installed on the East End Tower with its wash box to replace sn TG1-0203 that was returned to Frank. This instrument came directly from Alfalfa. |
| 2014-03-27 | 0065 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Twitchell Alfalfa tower for calibration. Replaced by sn 75H-2180. |
| 2014-04-02 | 0065 | LI-7500A | Calibration | Lab | Last calibration: 2013-09-11 AGC=73.1 SDM=1 DAC1=- DAC2=- Ambient P=100.27kPa, Tair=19.36C, Tdew=6.05C Zero Air at 1400psi, God CO2 421.22 at 1500 Tdewspan=15.27 CO2 zero 0.8897 -> 0.8899 Offset: .82ppm CO2 span 1.0041 -> 1.0062 Offset: -0.68ppm H2O zero 0.704 -> 0.7040 Offset: 0.2ppm H2O span 0.9959 -> 0.9932 Offset: 0.06ppm Notes: Calibrated by Joe |
| 2014-03-27 | 75H-2180 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Twitchell Alfalfa tower to replace sn 0065 for calibration. |
| 2014-09-02 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2014-03-26 AGC=94.8 SDM=1 DAC1=- DAC2=- Ambient P=99.73kPa, Tair=23.3C, Tdew=14.27C Zero Air at 1000psi, God CO2 421.22 at 1350 Tdewspan=15.25 CO2 zero 0.9147 -> 0.9143 Offset: -1.66ppm CO2 span 1.0173 -> 1.0134 Offset: 1.98ppm H2O zero 0.8803 -> 0.8812 Offset: 5.3ppm H2O span 0.9946 -> 1.0193 Offset: -0.5ppm Notes: |
| 2014-08-27 | 75H-2180 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Twitchell Alfalfa tower for calibration. Replaced by sn 75H-2182. |
| 2014-09-02 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2014-03-26 AGC=94.8 SDM=1 DAC1=- DAC2=- Ambient P=99.73kPa, Tair=23.3C, Tdew=14.27C Zero Air at 1000psi, God CO2 421.22 at 1350 Tdewspan=15.25 CO2 zero 0.9147 -> 0.9143 Offset: -1.66ppm CO2 span 1.0173 -> 1.0134 Offset: 1.98ppm H2O zero 0.8803 -> 0.8812 Offset: 5.3ppm H2O span 0.9946 -> 1.0193 Offset: -0.5ppm Notes: |
| 2014-08-27 | 75H-2182 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Twitchell Alfalfa tower to replace sn 75H-2180 for calibration. |
| 2015-01-13 | 75H-2182 | LI-7500A | Calibration | Lab | Last calibration: 2014-08-25 AGC=85.3 SDM=- DAC1=- DAC2=- Ambient P=101.1kPa, Tair=25.52C, Tdew=8.45C Zero Air at 900psi, God CO2 421.22 at 1300 Tdewspan=15.95 CO2 zero 0.8816 -> 0.8824 Offset: 3.53ppm CO2 span 1.0074 -> 1.0118 Offset: -2.38ppm H2O zero 0.8463 -> 0.8453 Offset: -6.2ppm H2O span 1.0039 -> 1.0078 Offset: -0.08ppm Notes: |
| 2015-01-07 | 75H-2182 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Alfalfa Tower for calibration. Replaced with sn 75H-2176 |
| 2015-01-13 | 75H-2182 | LI-7500A | Calibration | Lab | Last calibration: 2014-08-25 AGC=85.3 SDM=- DAC1=- DAC2=- Ambient P=101.1kPa, Tair=25.52C, Tdew=8.45C Zero Air at 900psi, God CO2 421.22 at 1300 Tdewspan=15.95 CO2 zero 0.8816 -> 0.8824 Offset: 3.53ppm CO2 span 1.0074 -> 1.0118 Offset: -2.38ppm H2O zero 0.8463 -> 0.8453 Offset: -6.2ppm H2O span 1.0039 -> 1.0078 Offset: -0.08ppm Notes: |
| 2015-01-07 | 75H-2176 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Alfalfa Tower to replace sn 75H-2182 for calibration |
| 2015-05-05 | 75H-2176 | LI-7500A | Calibration | Lab | Last calibration: 2015-05-05 AGC=90.7 SDM=1 DAC1=- DAC2=- Ambient P=100.12kPa, Tair=14.62C, Tdew=8.08C Zero Air at 850psi, God CO2 421.22 at 1100 Tdewspan=11.08 CO2 zero 0.8691 -> 0.8692 Offset: .38ppm CO2 span 1.0215 -> 1.0216 Offset: 0.0ppm H2O zero 0.8559 -> 0.8562 Offset: 1.7ppm H2O span 1.0099 -> 1.0239 Offset: -0.27ppm Notes: |
| 2015-04-23 | 75H-2176 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Alfalfa tower for calibration. Replaced by sn 0065. |
| 2015-05-05 | 75H-2176 | LI-7500A | Calibration | Lab | Last calibration: 2015-05-05 AGC=90.7 SDM=1 DAC1=- DAC2=- Ambient P=100.12kPa, Tair=14.62C, Tdew=8.08C Zero Air at 850psi, God CO2 421.22 at 1100 Tdewspan=11.08 CO2 zero 0.8691 -> 0.8692 Offset: .38ppm CO2 span 1.0215 -> 1.0216 Offset: 0.0ppm H2O zero 0.8559 -> 0.8562 Offset: 1.7ppm H2O span 1.0099 -> 1.0239 Offset: -0.27ppm Notes: |
| 2015-04-23 | 0065 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Alfalfa tower to replace sn 75H-2176 for calibration. |
| 2015-12-07 | 0065 | LI-7500A | Calibration | Lab | Last calibration: 2015-04-20 AGC=76.5 SDM=1 DAC1=- DAC2=- Ambient P=100.92kPa, Tair=19.81C, Tdew=14.18C Zero Air at 650psi, God CO2 421.22 at 700 Tdewspan=11.09 CO2 zero 0.8897 -> 0.8900 Offset: 1.20ppm CO2 span 1.0074 -> 1.0164 Offset: -4.88ppm H2O zero 0.7055 -> 0.7097 Offset: 31.2ppm H2O span 1.0071 -> 1.0231 Offset: -0.32ppm Notes: |
| 2015-07-22 | 0065 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Alfalfa Tower for calibration. Replaced by sn 75H-2150 |
| 2015-12-07 | 0065 | LI-7500A | Calibration | Lab | Last calibration: 2015-04-20 AGC=76.5 SDM=1 DAC1=- DAC2=- Ambient P=100.92kPa, Tair=19.81C, Tdew=14.18C Zero Air at 650psi, God CO2 421.22 at 700 Tdewspan=11.09 CO2 zero 0.8897 -> 0.8900 Offset: 1.20ppm CO2 span 1.0074 -> 1.0164 Offset: -4.88ppm H2O zero 0.7055 -> 0.7097 Offset: 31.2ppm H2O span 1.0071 -> 1.0231 Offset: -0.32ppm Notes: |
| 2015-07-22 | 75H-2150 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Alfalfa Tower to replace sn 0065 for calibration. |
| 2015-12-07 | 75H-2150 | LI-7500A | Calibration | Lab | Last calibration: 2015-07-15 AGC=98.6 SDM=1 DAC1=- DAC2=- Ambient P=100.94kPa, Tair=19.78C, Tdew=12.44C Zero Air at 650psi, God CO2 421.22 at 700 Tdewspan=11.09 CO2 zero 0.9021 -> 0.9019 Offset: -1.16ppm CO2 span 1 -> 1.0114 Offset: -6.07ppm H2O zero 0.8671 -> 0.8671 Offset: 0.3ppm H2O span 0.9986 -> 1.0258 Offset: -0.52ppm Notes: |
| 2015-11-25 | 75H-2150 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Alfalfa Tower for calibration. Replaced by sn 1594 |
| 2015-12-07 | 75H-2150 | LI-7500A | Calibration | Lab | Last calibration: 2015-07-15 AGC=98.6 SDM=1 DAC1=- DAC2=- Ambient P=100.94kPa, Tair=19.78C, Tdew=12.44C Zero Air at 650psi, God CO2 421.22 at 700 Tdewspan=11.09 CO2 zero 0.9021 -> 0.9019 Offset: -1.16ppm CO2 span 1 -> 1.0114 Offset: -6.07ppm H2O zero 0.8671 -> 0.8671 Offset: 0.3ppm H2O span 0.9986 -> 1.0258 Offset: -0.52ppm Notes: |
| 2015-11-25 | 1594 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Alfalfa Tower to replace sn 75H-2150 for calibration |
| 2016-02-11 | 1594 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Alfalfa Tower for calibration. Replaced by sn 75H-2180. |
| 2016-02-11 | 75H-2180 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Alfalfa Tower to replace sn 1594 for calibration. |
| 2016-08-30 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2016-02-09 AGC=100.3 SDM=6 DAC1=- DAC2=- Ambient P=100.13kPa, Tair=23.80C, Tdew=13.90C Zero Air at 400psi, God CO2 421.22 at 450 Tdewspan=16.0 CO2 zero 0.9145 -> 0.9142 Offset: -1.25ppm CO2 span 1.0203 -> 1.0227 Offset: -1.22ppm H2O zero 0.8847 -> 0.8858 Offset: 7.0ppm H2O span 1.0241 -> 1.0211 Offset: 0.06ppm Notes: |
| 2016-06-06 | 75H-2180 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from tower in Twitchell alfalfa for calibration, replaced by sn 75H-2514. |
| 2016-08-30 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2016-02-09 AGC=100.3 SDM=6 DAC1=- DAC2=- Ambient P=100.13kPa, Tair=23.80C, Tdew=13.90C Zero Air at 400psi, God CO2 421.22 at 450 Tdewspan=16.0 CO2 zero 0.9145 -> 0.9142 Offset: -1.25ppm CO2 span 1.0203 -> 1.0227 Offset: -1.22ppm H2O zero 0.8847 -> 0.8858 Offset: 7.0ppm H2O span 1.0241 -> 1.0211 Offset: 0.06ppm Notes: |
| 2016-06-06 | 75H-2514 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Twitchell alfalfa to replace sn 75H-2180 for calibration. |
| 2016-09-12 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2016-06-03 AGC=103.2 SDM=6 DAC1=- DAC2=- Ambient P=99.87kPa, Tair=18.64C, Tdew=9.66C Zero Air at 400psi, God CO2 421.22 at 400 Tdewspan=16.0 CO2 zero 0.9047 -> 0.9054 Offset: 2.80ppm CO2 span 1.0055 -> 1.0092 Offset: -2.07ppm H2O zero 0.8368 -> 0.8371 Offset: -10.5ppm H2O span 1.015 -> 1.0239 Offset: -0.18ppm Notes: |
| 2016-08-31 | 75H-2514 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Twitchell Alfalfa tower for calibration. Replaced by sn 75H-2182 |
| 2016-09-12 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2016-06-03 AGC=103.2 SDM=6 DAC1=- DAC2=- Ambient P=99.87kPa, Tair=18.64C, Tdew=9.66C Zero Air at 400psi, God CO2 421.22 at 400 Tdewspan=16.0 CO2 zero 0.9047 -> 0.9054 Offset: 2.80ppm CO2 span 1.0055 -> 1.0092 Offset: -2.07ppm H2O zero 0.8368 -> 0.8371 Offset: -10.5ppm H2O span 1.015 -> 1.0239 Offset: -0.18ppm Notes: |
| 2016-08-31 | 75H-2182 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Twitchell Alfalfa tower to replace sn 75H-2514 for calibration. |
| 2016-12-06 | 75H-2182 | LI-7500A | Calibration | Lab | Removed from the Twitchell Alfalfa tower for calibration. Replaced by sn 75H-2668. |
| 2016-12-06 | 75H-2182 | LI-7500A | Calibration | Gas Analyzer CO2/H2O | Removed from the Twitchell Alfalfa tower for calibration. Replaced by sn 75H-2668. |
| 2016-12-19 | 75H-2182 | LI-7500A | Calibration | Lab | Last calibration: 2016-08-30 AGC=87.2 SDM=6 DAC1=- DAC2=- Ambient P=101.31kPa, Tair=20.29C, Tdew=-0.86C Zero Air at 300psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.8831 -> 0.8837 Offset: 2.75ppm CO2 span 1.0142 -> 1.0207 Offset: -3.48ppm H2O zero 0.8464 -> 0.8457 Offset: -4.2ppm H2O span 1.023 -> 1.0186 Offset: 0.09ppm Notes: |
| 2016-12-06 | 75H-2668 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Twitchell Alfalfa tower to replace sn 75H-2182 for calibration |
| 2016-12-23 | 75H-2668 | LI-7500A | Calibration | Lab | Last calibration: 2016-12-06 AGC=102.2 SDM=6 DAC1=- DAC2=- Ambient P=99.57kPa, Tair=14.95C, Tdew=C Zero Air at 300psi, God CO2 421.22 at 400 Tdewspan=14.00 CO2 zero 0.9385 -> 0.9378 Offset: -2.65ppm CO2 span 1.0171 -> 1.0000 Offset: 9.43ppm H2O zero 0.9017 -> 0.9006 Offset: -7.5ppm H2O span 1.0841 -> 0.9663 Offset: 2.45ppm Notes: Recal after box failed in the field after getting rain inside because the door was left open. Pressure about 0.5kPa low. Large offsets. Waves with 1 to 2 min period in data at steady state. Sending to licor for check. |
| 2016-12-21 | 75H-2668 | LI-7500A | Removed | Gas Analyzer CO2/H2O | This head was deployed with LI7550 box sn AIU-0674 when the box was damaged in the field. Could not determine in the field if the head was working so brought it back to the lab for testing. |
| 2016-12-23 | 75H-2668 | LI-7500A | Calibration | Lab | Last calibration: 2016-12-06 AGC=102.2 SDM=6 DAC1=- DAC2=- Ambient P=99.57kPa, Tair=14.95C, Tdew=C Zero Air at 300psi, God CO2 421.22 at 400 Tdewspan=14.00 CO2 zero 0.9385 -> 0.9378 Offset: -2.65ppm CO2 span 1.0171 -> 1.0000 Offset: 9.43ppm H2O zero 0.9017 -> 0.9006 Offset: -7.5ppm H2O span 1.0841 -> 0.9663 Offset: 2.45ppm Notes: Recal after box failed in the field after getting rain inside because the door was left open. Pressure about 0.5kPa low. Large offsets. Waves with 1 to 2 min period in data at steady state. Sending to licor for check. |
| 2016-12-29 | 75H-2514 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Twitchell Alfalfa with new 7550 box sn AIU-1557 to replace damaged system |
| 2017-03-14 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2017-01-03 AGC=88.6 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=28.4C, Tdew=5.92C Zero Air at 1700psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.9054 -> 0.9046 Offset: -2.87ppm CO2 span 1.0135 -> 1.0139 Offset: 0.34ppm H2O zero 0.8356 -> 0.8368 Offset: 9.3ppm H2O span 1.0225 -> 1.0106 Offset: 0.25ppm Notes: |
| 2017-03-08 | 75H-2514 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Twitchell Alfalfa for calibration. Replaced by sn 75H-2176 |
| 2017-03-14 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2017-01-03 AGC=88.6 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=28.4C, Tdew=5.92C Zero Air at 1700psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.9054 -> 0.9046 Offset: -2.87ppm CO2 span 1.0135 -> 1.0139 Offset: 0.34ppm H2O zero 0.8356 -> 0.8368 Offset: 9.3ppm H2O span 1.0225 -> 1.0106 Offset: 0.25ppm Notes: |
| 2017-03-08 | 75H-2176 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on Twitchell Alfalfa to replace sn 75H-2514 for calibration |
| 2017-06-12 | 75H-2176 | LI-7500A | Calibration | Lab | Last calibration: 2017-03-07 AGC=90.4 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=19.8C, Tdew=8.83C Zero Air at 1500psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.8691 -> .8690 Offset: -.41ppm CO2 span 1.0195 -> 1.0160 Offset: 1.77ppm H2O zero 0.8561 -> .8572 Offset: 5.9ppm H2O span 1.0102 -> 1.0022 Offset: 0.18ppm Notes: |
| 2017-06-05 | 75H-2176 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Twitchell Alfalfa and brought back to the lab for calibration. It was replaced by sn 1594. |
| 2017-06-12 | 75H-2176 | LI-7500A | Calibration | Lab | Last calibration: 2017-03-07 AGC=90.4 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=19.8C, Tdew=8.83C Zero Air at 1500psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.8691 -> .8690 Offset: -.41ppm CO2 span 1.0195 -> 1.0160 Offset: 1.77ppm H2O zero 0.8561 -> .8572 Offset: 5.9ppm H2O span 1.0102 -> 1.0022 Offset: 0.18ppm Notes: |
| 2017-06-05 | 1594 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Twitchell Alfalfa to replace sn 75H-2176. |
| 2017-09-06 | 1594 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Twitchell Alfalfa for calibration. Replaced by sn 0035. |
| 2017-09-06 | 0035 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on Twitchell Alfalfa to replace sn 1594 for calibration. |
| 2018-01-12 | 0035 | LI-7500A | Calibration | Lab | Last calibration: 2017-09-05 AGC=98.9 SDM=0 DAC1=0 DAC2=0 Ambient P=101.5kPa, Tair=20.5C, Tdew=10.2C Zero Air at 250psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9373 -> .9378 Offset: 1.97ppm CO2 span 1.0084 -> 1.0288 Offset: -10.27ppm H2O zero 0.8976 -> .8978 Offset: 1.3ppm H2O span 1.0141 -> 1.0296 Offset: -.31ppm Notes: |
| 2017-12-18 | 0035 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Twitchell Alfalfa for calibration. Replaced by sn 75H-2514 |
| 2018-01-12 | 0035 | LI-7500A | Calibration | Lab | Last calibration: 2017-09-05 AGC=98.9 SDM=0 DAC1=0 DAC2=0 Ambient P=101.5kPa, Tair=20.5C, Tdew=10.2C Zero Air at 250psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9373 -> .9378 Offset: 1.97ppm CO2 span 1.0084 -> 1.0288 Offset: -10.27ppm H2O zero 0.8976 -> .8978 Offset: 1.3ppm H2O span 1.0141 -> 1.0296 Offset: -.31ppm Notes: |
| 2017-12-18 | 75H-2514 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Twitchell Alfalfa to replace sn 0035 for calibration |
| 2018-04-18 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2017-12-15 AGC=102.5 SDM=0 DAC1=0 DAC2=0 Ambient P=101.0kPa, Tair=22.2C, Tdew=2.5C Zero Air at 500psi, LBL Air 408.97 at 1400 Tdewspan=16.00 CO2 zero 0.9052 -> .9060 Offset: 3.56ppm CO2 span 1.0118 -> 1.0106 Offset: 0.64ppm H2O zero 0.8385 -> .8368 Offset: -11.4ppm H2O span 1.0103 -> 1.0160 Offset: -0.12ppm Notes: |
| 2018-04-05 | 75H-2514 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from TA and brought back to the lab for calibration. It was replaced by sn 1594. |
| 2018-04-18 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2017-12-15 AGC=102.5 SDM=0 DAC1=0 DAC2=0 Ambient P=101.0kPa, Tair=22.2C, Tdew=2.5C Zero Air at 500psi, LBL Air 408.97 at 1400 Tdewspan=16.00 CO2 zero 0.9052 -> .9060 Offset: 3.56ppm CO2 span 1.0118 -> 1.0106 Offset: 0.64ppm H2O zero 0.8385 -> .8368 Offset: -11.4ppm H2O span 1.0103 -> 1.0160 Offset: -0.12ppm Notes: |
| 2018-04-05 | 1594 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at TA to replace sn 75H-2514, which was brought back to the lab for calibration. |
| 2018-06-13 | 1594 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed with Twitchell Alfalfa site decommissioning. |
| Heat Flux Plate | |||||
| 2013-05-24 | 6491 | HFP01 | Installed | Installed at the Twitchell Alfalfa site | |
| 2013-05-24 | 6342 | HFP01 | Installed | Installed at the Twitchell Alfalfa site | |
| 2013-05-24 | 6498 | HFP01 | Installed | Installed at the Twitchell Alfalfa site | |
| 2014-08-13 | 6342 | HFP01 | Moved | Moved back into the field from the edge of the field where it had been buried temporarily after being pull out. | |
| 2016-03-02 | 6498 | HFP01 | Removed | Removed from -2cm at the Alfalfa tower due to cable damage from farm equipment and sheep. There are a couple of chips in the edge of the top surface. | |
| 2016-03-02 | 6342 | HFP01 | Removed | Removed from -2cm at the Alfalfa tower due to cable damage from farm equipment and sheep. | |
| 2016-03-02 | 6491 | HFP01 | Removed | Removed from -2cm at the Alfalfa tower due to cable damage from farm equipment and sheep. There is a chip where the cable connects and scratch on the top surface. | |
| 2016-05-12 | 6342 | HFP01 | Moved | moved from 1st (W) channel on met CR1000 to the 1st (NE) channel on the soil co2 CR1000 | |
| 2016-05-17 | 6498 | HFP01 | Moved | moved from 2nd (NW) channel on met CR1000 to the 2nd (SE) channel on the soil co2 CR1000 | |
| 2016-05-17 | 6491 | HFP01 | Moved | moved from 3rd (west) channel on met CR1000 to the 3rd (NE) channel on the soil co2 CR1000 | |
| 2018-06-13 | 6342 | HFP01 | Removed | Heat Flux Plate A | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 6498 | HFP01 | Removed | Heat Flux Plate B | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 6491 | HFP01 | Removed | Heat Flux Plate C | Removed with Twitchell Alfalfa site decommissioning. |
| Interface | |||||
| 2013-05-24 | AIU-0674 | LI-7550 | Installed | Interface LI-7550 | Installed on the north side of the scaffolding at the Alfalfa site with head 2180 |
| 2013-11-21 | AIU-0674 | LI-7550 | Upgrade | Interface LI-7550 | The firmware of the 7550 box was upgraded from v6.5.2 to v6.5.5 to fix bugs with the USB memory overwrite and synchronizing the 7700 clock. |
| 2014-03-07 | AIU-0674 | LI-7550 | Upgrade | Interface LI-7550 | Updated the 7550 firmware from v6.5.5 to v7.0.1. Improved interface, support for SmartFlux, bug fixes. |
| 2014-10-02 | AIU-0674 | LI-7550 | Upgrade | Interface LI-7550 | Updated the 7550 firmware from v7.0.1 to v7.3.0. Fixed bug that can cause the instrument to restart unexpectedly, added 7700 data to interface can view/log power Vin, other minor bug fixes. |
| 2015-11-11 | 6763 | NL115 | Installed | Installed on the existing CR1000 that collects met data. This will be used to collect the high frequency PAR from the rotating shadow band while the bugs are worked out. | |
| 2016-04-13 | AIU-0674 | LI-7550 | Upgrade | Interface LI-7550 | Updated the 7550 firmware from v7.3.0 to v8.0.0 skiping version 7.5.0 Relevant 7.5.0 changes: Main Window is now resizable, Added serial number entry for sonics, Help update, Fixed timeout when saving config files Relevant 8.0.0 changes: Separate bandwidth settings for analog inputs and gas channels, Detection of new RS instruments, Additional calibration coefficients, Added sonic software version entry, Added chopper temp logging |
| 2016-12-21 | AIU-0674 | LI-7550 | Removed | Interface LI-7550 | This 7550 box was damaged in the field. The door was left open and the circuit board got wet. Brought back to the lab for testing and repairs. LI7500 head sn 75H-2668 was deployed with the unit when it was damaged. |
| 2016-12-29 | AIU-1557 | LI-7550 | Installed | Interface LI-7550 | Installed at Twitchell Alfalfa after old AIU was damaged in rain. Installed together with 7500 head sn 75H-2514 |
| 2017-08-23 | AIU-1557 | LI-7550 | Upgrade | Interface LI-7550 | The firmware was upgraded from v8.0.0 to v8.7.5 |
| 2017-12-18 | AIU-1557 | LI-7550 | Upgrade | Interface LI-7550 | The software on this 7550 box was down graded from v8.7.5 to v8.5.0 |
| 2018-06-13 | 6763 | NL115 | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | AIU-1557 | LI-7550 | Removed | Interface LI-7550 | Removed with Twitchell Alfalfa site decommissioning. |
| LED sensor | |||||
| 2013-05-24 | LED-04 | LED-NDVI | Installed | Installed on the radiation post in the alfalfa field west of the scaffolding. | |
| 2013-07-26 | LED-04 | LED-NDVI | Removed | Removed from Alfalfa site for calibration | |
| 2013-07-26 | LED-06 | LED-NDVI | Installed | Installed on radiation boom in Alfalfa field. | |
| Multiplexer | |||||
| 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. |
| 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 |
| 2014-05-13 | 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 |
| 2014-06-05 | 6767 | AM25T | Installed | Multiplexer Thermocouple | Reinstalled at Alfalfa after being repaired by Campbell. Removed AM16/32 sn 1164 |
| 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. | |
| 2015-06-09 | 1164 | AM16/32A | Installed | Multiplexer Soil CO2 | Installed with the new soil CO2 box. |
| 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 | 11662 | AM16/32B | Removed | Multiplexer Radiation | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 6767 | AM25T | Removed | Multiplexer Thermocouple | Removed with Twitchell Alfalfa site decommissioning. |
| 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. |
| Narrow Band | |||||
| 2017-02-01 | 882103036 | SRS-Ni NDVI | Installed | Narrow Band NDVI Incoming | Installed on the Twitchell Alfalfa tower radiation boom to measure incoming NDVI bands. |
| 2017-02-01 | 882103061 | SRS-Ni NDVI | Installed | Narrow Band NDVI Reflected | Installed on the Twitchell Alfalfa tower radiation boom to measure outgoing NDVI bands. |
| 2017-04-10 | 913003006 | SRS-Pi PRI | Installed | Narrow Band PRI Incoming | Installed at TA as the PRI_in sensor. SDI-12 ID is A. |
| 2017-04-10 | 913003007 | SRS-Pi PRI | Installed | Narrow Band PRI Reflected | Installed at TA as the PRI_out sensor. SDI-12 ID is F. |
| 2018-06-13 | 913003007 | SRS-Pi PRI | Removed | Narrow Band PRI Reflected | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 913003006 | SRS-Pi PRI | Removed | Narrow Band PRI Incoming | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 882103061 | SRS-Ni NDVI | Removed | Narrow Band NDVI Reflected | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 882103036 | SRS-Ni NDVI | Removed | Narrow Band NDVI Incoming | Removed with Twitchell Alfalfa site decommissioning. |
| Net Radiometer | |||||
| 2013-05-24 | 1570 | NR01 | Installed | Net Radiometer 4-way | Installed at the Twitchell Alfalfa site on the radiation post in the field west of the scaffolding |
| 2013-06-05 | 020476 | CNR1 | Installed | Installed on the radiation post at the Twitchell Alfalfa for a cross comparison with the Hukseflux NR01 sn 1570 | |
| 2013-06-13 | 020476 | CNR1 | Removed | Removed from the radiation post at the Twitchell Alfalfa field due to bad readings on all channels. Later determined that the SWin channel was accidentally put into the second COM channel on the multiplexor. | |
| 2013-06-18 | 020476 | CNR1 | Installed | Installed on the radiation post at the Twitchell Alfalfa for a cross comparison with the Hukseflux NR01 sn 1570 | |
| 2013-06-27 | 020476 | CNR1 | Removed | Pulled the CNR1 off the Twitchell Alfalfa tower. Was being tested alongside the NR01 at the site. Now in the lab. | |
| 2018-06-13 | 1570 | NR01 | Removed | Net Radiometer 4-way | Removed with Twitchell Alfalfa site decommissioning. |
| PAR Sensor | |||||
| 2013-05-24 | 110338 | PQS 1 | Installed | PAR Sensor Incoming | Installed at the Twitchell Alfalfa site. This PAR sensor is mounted to measure incoming PAR. This sensor is on the radiation post in the field west of the scaffolding. |
| 2013-05-24 | 110339 | PQS 1 | Installed | PAR Sensor Reflected | Installed at the Twitchell Alfalfa site. This PAR sensor is mounted to measure reflected PAR. This sensor is on the radiation post in the field west of the scaffolding. |
| 2015-10-15 | 040411 | PAR-LITE | Installed | PAR Sensor Diffuse | This sensor was installed with a rotating shadow band to measure diffuse PAR. The CR1000 met program was updated appropriately. |
| 2018-06-13 | 040411 | PAR-LITE | Removed | PAR Sensor Diffuse | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 110338 | PQS 1 | Removed | PAR Sensor Incoming | Removed with Twitchell Alfalfa site decommissioning. |
| 2018-06-13 | 110339 | PQS 1 | Removed | PAR Sensor Reflected | Removed with Twitchell Alfalfa site decommissioning. |
| Precipitation | |||||
| 2017-05-10 | 49187-109 | TE525MM | Installed | Precipitation | Installed at TA to the same pole as the soilco2 datalogger enclosure and wired it to the met CR1000. We realized this wiring under-measured precipitation and re-wired to a CR10x on 2018-02-13. |
| 2018-06-13 | 49187-109 | TE525MM | Removed | Precipitation | Removed with Twitchell Alfalfa site decommissioning. |
| RH & Temp | |||||
| 2013-05-24 | G4540021 | HMP60 | Installed | RH & Temp | Installed at the Twitchell Alfalfa site. |
| 2017-02-14 | G4540021 | HMP60 | Removed | RH & Temp | Removed from Twitchell Alfalfa b/c RH values were slowly drifting to 0 |
| 2017-02-14 | L1740420 | HMP60 | Installed | RH & Temp | Installed at Twitchell Alfalfa |
| 2017-12-18 | L1740420 | HMP60 | Moved | 0 | Installed at Twitchell Alfalfa for an inter-comparison of HMPs |
| 2017-12-18 | G4540023 | HMP60 | Removed | none | Removed from Eat End for a 24hour side-by-side comparison at Twitchell Alfalfa |
| 2017-12-18 | G4540025 | HMP60 | Removed | Removed from West Pond for 24hour side-by-side comparison at Twitchell Alfalfa | |
| 2017-12-18 | L2310736 | HMP60 | Removed | 0 | Removed from Sherman Wetland for 24hour side-by-side comparison at Twitchell Alfalfa |
| 2017-12-18 | U2120013 | HMP45A | Removed | 0 | Removed from Mayberry for 24hour side-by-side comparison at Twitchell Alfalfa |
| 2017-12-18 | G4540021 | HMP60 | Installed | 0 | Installed at Twitchell Alfalfa for an inter-comparison of HMPs |
| 2017-12-18 | W0730036 | HMP45AC | Installed | Installed at Twitchell Alfalfa for an inter-comparison of HMPs | |
| 2017-12-18 | U3030041 | HMP45AC | Installed | Installed at Twitchell Alfalfa for an inter-comparison of HMPs | |
| 2017-12-18 | T2130005 | HMP45AC | Installed | Installed at Twitchell Alfalfa for an inter-comparison of HMPs | |
| 2017-12-18 | L2310711 | HMP60 | Installed | Installed at Twitchell Alfalfa for an inter-comparison of HMPs | |
| 2017-12-18 | U3030046 | HMP45AC | Installed | Installed at Twitchell Alfalfa for an inter-comparison of HMPs | |
| 2017-12-18 | T1250012 | HMP45AC | Installed | Installed at Twitchell Alfalfa for an inter-comparison of HMPs | |
| 2017-12-19 | L1740420 | HMP60 | Moved | RH & Temp | Moved back up to its usual position near the 7500 from the HMP inter-comparison height. |
| 2017-12-19 | W0730036 | HMP45AC | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa | |
| 2017-12-19 | G4540021 | HMP60 | Removed | 0 | Removed from the HMP inter-comparison at Twitchell Alfalfa |
| 2017-12-19 | U3030041 | HMP45AC | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa | |
| 2017-12-19 | G4540023 | HMP60 | Removed | none | Removed from the HMP inter-comparison at Twitchell Alfalfa and returned to East End |
| 2017-12-19 | G4540025 | HMP60 | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa and returned to West Pond | |
| 2017-12-19 | T2130005 | HMP45AC | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa | |
| 2017-12-19 | L2310736 | HMP60 | Removed | 0 | Removed from the HMP inter-comparison at Twitchell Alfalfa and returned to Sherman Wetland |
| 2017-12-19 | U2120013 | HMP45A | Removed | 0 | Removed from the HMP inter-comparison at Twitchell Alfalfa and returned to Mayberry |
| 2017-12-19 | L2310711 | HMP60 | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa | |
| 2017-12-19 | U3030046 | HMP45AC | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa | |
| 2017-12-19 | T1250012 | HMP45AC | Removed | Removed from the HMP inter-comparison at Twitchell Alfalfa | |
| 2018-01-11 | G4540021 | HMP60 | Installed | 0 | Installed on Twitchell Alfalfa for another comparison. Last time the TA HMP60 had spiders in it and a slow fan. |
| 2018-01-31 | G4540021 | HMP60 | Removed | 0 | This golden HMP60 sensor was brought back from TA to the lab at the conclusion of our HMP comparison. |
| 2018-06-13 | L1740420 | HMP60 | Removed | RH & Temp | Removed with Twitchell Alfalfa site decommissioning. |
| Soil Moisture Probe | |||||
| 2013-05-24 | 377/008 | ML2x | Installed | Installed at the Twitchell Alfalfa site. This probes was installed horizontally at 10cm below the surface. | |
| 2013-05-24 | 377/009 | ML2x | Installed | Installed at the Twitchell Alfalfa site. This probe was installed vertically at 20cm below the surface. | |
| 2016-03-02 | 377/008 | ML2x | Removed | Removed from -10cm at the Alfalfa tower due to cable damage from farm equipment and sheep. | |
| 2016-03-02 | 377/010 | ML2x | Removed | Removed from -20cm at the Alfalfa tower due to cable damage from farm equipment and sheep. | |
| 2016-05-12 | 377/010 | ML2x | Installed | Installed at -20cm to the northeast of the soil co2 box | |
| 2016-05-17 | 377/008 | ML2x | Installed | Installed at -10cm to the southeast of the soil co2 box | |
| 2018-06-13 | 377/008 | ML2x | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | 377/010 | ML2x | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | 54/016 | ML2x | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | 54/007 | ML2x | Removed | Soil Moisture Probe SoilCO2 A | Removed with Twitchell Alfalfa site decommissioning. |
| Solar Controller | |||||
| 2013-05-24 | 11400080 | PS-30M | Installed | Installed in the box at the Alfalfa tower. Connected to one 140W panel and two G27 batteries. | |
| 2018-05-10 | 12501584 | PS-15M | Removed | Solar Controller | Removed from East Pond. Replaced by 30A controller. |
| 2018-05-10 | 11400080 | PS-30M | Removed | Solar Controller | Removed from Twitchell Alfalfa to swap out a 15A version to be installed here. |
| 2018-05-10 | 11400080 | PS-30M | Installed | Solar Controller | Installed at East Pond in a new smaller box on the solar system to replace the two 15A charger controllers that were running in parallel. |
| 2018-05-10 | 12501584 | PS-15M | Installed | Solar Controller | Removed from East Pond in favor of a 30A version and installed at Twitchell Alfalfa |
| 2018-06-13 | 12501584 | PS-15M | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| Solar Panel | |||||
| 2013-05-24 | 11ZV0M0861 | KD140SX-UFBS | Installed | This panel was stored in the trailer at Twitchell. It was installed on the new Twitchell Alfalfa tower. | |
| 2013-10-24 | 11ZV0M0860 | KD140SX-UFBS | Installed | Add to the existing panel at Alfalfa due to low battery power outages. | |
| 2018-06-13 | 11ZV0M0860 | KD140SX-UFBS | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| 2018-06-13 | 11ZV0M0861 | KD140SX-UFBS | Removed | Removed with Twitchell Alfalfa site decommissioning. | |
| Weather Station | |||||
| 2017-09-07 | A000251 | Mark I | Installed | Weather Station | Installed at Twitchell Alfalfa with Joe Berry. This was just a quick stop on our way to Tonzi and Vaira. |
| 2018-06-13 | A000251 | Mark I | Removed | Weather Station | Removed with Twitchell Alfalfa site decommissioning. |