Equipment and Calibration

Equipment history at Bouldin Alfalfa

| ALL | | Anemometer || Barometer || Camera || Data Logger || Flux Analyzer || Forced Diffusion || Gas Analyzer || Heat Flux Plate || Infrared Temperature || Interface || Multiplexer || Narrow Band || Net Radiometer || PAR Sensor || Precipitation || Range Finder || 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
2016-08-12	153806	WM 1590	Installed	Anemometer	Installed with the initial set up of the site.
2016-08-31	153806	WM 1590	Removed	Anemometer	Removed from the Bouldin Alfalfa tower due to daytime spiking problem likely due to new firmware. Replaced by sn 124215
2016-08-31	124215	WM 1590	Installed	Anemometer	Installed on the Bouldin Alfalfa tower to replace sn 153806 that has a spiking problem.
2016-10-06	124215	WM 1590	Removed	Anemometer	Removed from the Bouldin Alfalfa tower. This sensor was installed to test the system. Replaced by sn 153806.
2016-10-06	153806	WM 1590	Installed	Anemometer	Reinstalled on the Bouldin Alfalfa tower replacing sn 124215. This sonic is working correctly. Spikes were caused by the soil moisture probes powering up and browning out the system.
2021-07-20	153806	WM 1590	Removed	Anemometer	Removed from Bouldin Alfalfa and replaced by sn 074417 so that the advection experiment could run with four inter-compared sonics.
2021-07-20	074417	WM 1590	Installed	Anemometer	Installed at Bouldin Alfalfa to replace sn 152806 for advection experiemnt. This sonic was compare to the other three used for the advection experiement.
2024-02-14	022365394	SONIC-ANEMO-SPE10	Installed	Weather Station B	Added to the new Arable Mark 3 sn D006812
Barometer
2016-08-12	L1920571	PTB110	Installed	Barometer	Installed with the initial set up of the site.
2018-07-12	L1920571	PTB110	Removed	Barometer	Removed from BA because pressure has been slowly decreasing since Feb and does not match BC pressure data.
Camera
2016-11-03	0030F4D214A4	SD130BN	Installed	Camera	This Stardot camera was mounted on the Bouldin Alfalfa tower. It is facing NW off the north side of the tower scaffolding. It is currently mounted near the top of the railing due to a short cable. It will be moved to near the top of the post later.
2020-08-26	0030F4D214A4	SD130BN	Removed	Camera	Removed from Bouldin Alfalfa for upgrade of control scripts. Replaced by sn 0030F4D21525
2020-08-26	0030F4D21525	SD130BN	Installed	Camera	Installed at Bouldin Alfalfa with newest control scripts replacing sn 0030F4D214A4
2023-08-08	0030F4D21525	SD130BN	Removed	Camera	Removed from BA because I couldn't connect. The front status LED remained red, even after a power cycle.
2023-08-24	0030f4d0b0b3	SD500BN-NL	Installed	Camera	Installed to replace the broken one remove last time.
2024-12-04	RPI0W-007	RPI0W	Installed	none	Installed in the Bouldin alfalfa/wheat field. The wheat sprouts are only a few cm tall.
2024-12-04	RPI0W-002	RPI0W	Installed	none	Installed in the Bouldin alfalfa/wheat field. The wheat sprouts are only a few cm tall.
2024-12-19	RPI0W-002	RPI0W	Removed		Removed from the BA wheat field because it only had partial photos from the past 2 weeks. I think this enclosure needs better weatherproofing.
2024-12-19	RPI0W-007	RPI0W	Removed		Removed from the BA wheat field because this camera is dead from water intrusion.
2025-01-15	RPI0W-002	RPI0W	Installed	none	Installed south of the tower on the ground for upward looking gap fraction in the wheat. I had to reset its clock even though it was off for weeks in the lab without losing its clock. Maybe I accidentally jiggled the RTC at some point after powering it off for the final time in the lab.
Data Logger
2016-08-12	66252	CR1000	Installed	Data Logger Met	Installed with the initial set up of the site.
2019-03-14	66252	CR1000	Maintenance	Data Logger Met	The CR1000 packbus id was change from 1 to 52
2020-09-10	66252	CR1000	Maintenance	Data Logger Met	Changed the IP address from 192.168.2.1 to 192.168.2.100
2021-06-16	1130	CR1000X	Installed	Data Logger Surface Renewal	Installed as part of Kevin Tu's surface renewal experiment
2024-01-04	1130	CR1000X	Removed	Data Logger Surface Renewal	Removed from BA tower at the conclusion of Corteva's IRT experiment.
2025-01-30	2114	CR6	Installed	none	Installed at BA to collect raw and 30min data from the LI-720 prototype
Flux Analyzer
2023-03-13	ET1-00039	LI-710	Installed	Flux Analyzer ET	Installed with a Sutron data logger and cell modem for calval testing by Licor
2024-08-30	ET1-00039	LI-710	Removed	Flux Analyzer ET	Removed from BA for return to Licor. This sensor has not been reporting data fro several months
Forced Diffusion
2018-07-12	FD20160001	eosFD	Installed	Forced Diffusion A	Installed at BA under the scaffolding. Sampling frequency is 5 min.
2018-07-26	FD20160001	eosFD	Removed	Forced Diffusion A	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.
2018-08-07	FD20160001	eosFD	Installed	Forced Diffusion A	Installed under the BA scaffolding over bare soil.
2020-04-17	FD20160001	eosFD	Notes	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.
2020-04-17	FD20190028	eosFD	Installed	Forced Diffusion B	Installed with a collar at BA under the tower (SE corner) over bare soil.
2020-09-23	FD20180048	eosFD	Moved	Forced Diffusion A	Moved from BC to BA to replace sn FD20160001, which was brought back to the lab for testing
2020-09-23	FD20190028	eosFD	Removed	Forced Diffusion B	Removed from BA and brought back to the lab for testing because of noisy data
2020-09-23	FD20160001	eosFD	Removed	Forced Diffusion A	Removed from BA and brought back to the lab for testing because of noisy data. It was replaced by sn FD20180048.
2020-10-05	FD20180048	eosFD	Removed	Forced Diffusion A	Removed from Bouldin Alfalfa to check on it's low CO2 concentration readings. Replaced by sn FD20180047
2020-10-05	FD20180047	eosFD	Installed	Forced Diffusion A	Installed at Bouldin Alfalfa replacing sn FD20180048 that has low CO2 concentration readings. Also added a relay to restart this chamber at midnight to avoid high temperature start up problem.
2020-12-18	FD20180047	eosFD	Removed	Forced Diffusion A	Removed from Bouldin Alfalfa. This one has high temperature start up issues and was running on a relay to restart it every night. I removed the relay too but did not update the CR1000 program.
2020-12-18	FD20160001	eosFD	Installed	Forced Diffusion A	Installed to replace the FD Chamber with the high temperature startup problems.
2021-07-20	FD20160001	eosFD	Maintenance	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
2023-04-11	FD20160001	eosFD	Removed	Forced Diffusion A	Removed from BA underneath the tower. The data has been super noisy since mid March. The cable is still on the tower.
2023-05-09	FD20180026	eosFD	Moved	Forced Diffusion A	Moved from BC to BA to replace sn FD20160001 which broke. We should have soil CO2 flux data from Whendee's chamber measurements at BC.
2024-10-09	FD20180026	eosFD	Removed	Forced Diffusion A	Removed from BA tower and brought back to the lab. The BA field is getting plowed. Joe may use this FD chamber at Tonzi/Vaira.
Gas Analyzer
2016-08-12	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed with the initial set up of the site.
2016-12-19	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2016-08-03 AGC=107.0 SDM=6 DAC1=- DAC2=- Ambient P=101.23kPa, Tair=21.56C, Tdew=-1.32C Zero Air at 300psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.9427 -> 0.9421 Offset: -2.08ppm CO2 span 1.0156 -> 1.0156 Offset: -0.02ppm H2O zero 0.8333 -> 0.8378 Offset: 28.1ppm H2O span 1.015 -> 1.0214 Offset: -0.13ppm Notes:
2016-08-12	TG1-0421	LI-7700	Installed	Gas Analyzer CH4	Installed with the initial set up of the site.
2016-12-07	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 0065
2016-12-19	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2016-08-03 AGC=107.0 SDM=6 DAC1=- DAC2=- Ambient P=101.23kPa, Tair=21.56C, Tdew=-1.32C Zero Air at 300psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.9427 -> 0.9421 Offset: -2.08ppm CO2 span 1.0156 -> 1.0156 Offset: -0.02ppm H2O zero 0.8333 -> 0.8378 Offset: 28.1ppm H2O span 1.015 -> 1.0214 Offset: -0.13ppm Notes:
2016-12-07	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Bouldin Alfalfa tower to replace sn 75H-2667 for calibration.
2017-05-30	0065	LI-7500A	Calibration	Lab	Last calibration: 2016-12-06 AGC=100 SDM= DAC1= DAC2= Ambient P=99.7kPa, Tair=19.8C, Tdew=10.1C Zero Air at 1050psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.8899 -> .8901 Offset: 1.08ppm CO2 span 1.0142 -> 1.0130 Offset: -.84ppm H2O zero 0.7086 -> .7087 Offset: .6ppm H2O span 1.0127 -> 1.0166 Offset: -.08ppm Notes: Signal strength was 73.9 after thorough cleaning of lenses, so I reset the Signal Strength to 100%.
2017-03-23	TG1-0421	LI-7700	Removed	Gas Analyzer CH4	Removed from Bouldin Alfalfa and brought back to the lab for calibration. It was replaced by TG1-0424.
2017-03-23	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa and brought back to the lab for calibration. It was replaced by sn 75H-2667.
2017-05-30	0065	LI-7500A	Calibration	Lab	Last calibration: 2016-12-06 AGC=100 SDM= DAC1= DAC2= Ambient P=99.7kPa, Tair=19.8C, Tdew=10.1C Zero Air at 1050psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.8899 -> .8901 Offset: 1.08ppm CO2 span 1.0142 -> 1.0130 Offset: -.84ppm H2O zero 0.7086 -> .7087 Offset: .6ppm H2O span 1.0127 -> 1.0166 Offset: -.08ppm Notes: Signal strength was 73.9 after thorough cleaning of lenses, so I reset the Signal Strength to 100%.
2017-03-23	TG1-0424	LI-7700	Installed	Gas Analyzer CH4	Installed at Bouldin Alfalfa to replace TG1-0421.
2017-03-23	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 0065.
2017-08-01	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2017-03-21 AGC=100 SDM= DAC1= DAC2= Ambient P=100.1kPa, Tair=23.2C, Tdew=19.4C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9423 -> .9443 Offset: 8.88ppm CO2 span 1.0144 -> .9346 Offset: 59.3ppm H2O zero 0.838 -> .8578 Offset: 144.2ppm H2O span 1.0219 -> .9724 Offset: 1.09ppm Notes: Reset signal strength from 113 to 100. H2O at ambient was about 900 mmol/m3, which seems higher than usual. Manually entered in existing coefficients before the calibration because did not have existing config file (usual laptop was elsewhere). Maybe I had entered the coefficients incorrectly in the database?
2017-06-23	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration; replaced by 75H-0073.
2017-08-01	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2017-03-21 AGC=100 SDM= DAC1= DAC2= Ambient P=100.1kPa, Tair=23.2C, Tdew=19.4C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9423 -> .9443 Offset: 8.88ppm CO2 span 1.0144 -> .9346 Offset: 59.3ppm H2O zero 0.838 -> .8578 Offset: 144.2ppm H2O span 1.0219 -> .9724 Offset: 1.09ppm Notes: Reset signal strength from 113 to 100. H2O at ambient was about 900 mmol/m3, which seems higher than usual. Manually entered in existing coefficients before the calibration because did not have existing config file (usual laptop was elsewhere). Maybe I had entered the coefficients incorrectly in the database?
2017-06-23	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace 75H-2667.
2017-11-27	0073	LI-7500A	Calibration	Lab	Last calibration: 2017-06-22 AGC=100.6 SDM=0 DAC1=0 DAC2=0 Ambient P=101.0kPa, Tair=21.6C, Tdew=6.8C Zero Air at 350psi, LBL Air 408.97 at 1750 Tdewspan=16.00 CO2 zero 0.9572 -> .9571 Offset: -0.028ppm CO2 span 1.0084 -> 1.0118 Offset: -2.11ppm H2O zero 0.7307 -> .7306 Offset: -0.3ppm H2O span 1.0045 -> 1.0000 Offset: 0.1ppm Notes: Calibrated on 7550 software version 8.5.0
2017-06-23	TG1-0424	LI-7700	Installed	Gas Analyzer CH4	Moved from Bouldin Alfalfa to be installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site.
2017-09-19	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Brought back to the lab for calibration and replaced by sn 0042.
2017-11-27	0073	LI-7500A	Calibration	Lab	Last calibration: 2017-06-22 AGC=100.6 SDM=0 DAC1=0 DAC2=0 Ambient P=101.0kPa, Tair=21.6C, Tdew=6.8C Zero Air at 350psi, LBL Air 408.97 at 1750 Tdewspan=16.00 CO2 zero 0.9572 -> .9571 Offset: -0.028ppm CO2 span 1.0084 -> 1.0118 Offset: -2.11ppm H2O zero 0.7307 -> .7306 Offset: -0.3ppm H2O span 1.0045 -> 1.0000 Offset: 0.1ppm Notes: Calibrated on 7550 software version 8.5.0
2017-09-19	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at BA tower to replace sn 0073 for calibration.
2018-03-05	0042	LI-7500A	Calibration	Lab	Last calibration: 2017-05-05 AGC=98 SDM=0 DAC1=0 DAC2=0 Ambient P=101.4kPa, Tair=25.5C, Tdew=2.0C Zero Air at 150psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9847 -> .9485 Offset: 1.08ppm CO2 span 1.0244 -> 1.0124 Offset: -1.35ppm H2O zero 0.8434 -> .843 Offset: .7ppm H2O span 1.1404 -> 1.0225 Offset: -.11ppm Notes:
2017-10-19	TG1-0223	LI-7700	Installed	Gas Analyzer CH4	Installed at BA (now that the East End temporary towers are done, we have an available LI-7700 to put up here)
2017-12-19	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2667.
2018-03-05	0042	LI-7500A	Calibration	Lab	Last calibration: 2017-05-05 AGC=98 SDM=0 DAC1=0 DAC2=0 Ambient P=101.4kPa, Tair=25.5C, Tdew=2.0C Zero Air at 150psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9847 -> .9485 Offset: 1.08ppm CO2 span 1.0244 -> 1.0124 Offset: -1.35ppm H2O zero 0.8434 -> .843 Offset: .7ppm H2O span 1.1404 -> 1.0225 Offset: -.11ppm Notes:
2017-12-19	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Bouldin Alfalfa to replace sn 0042 for calibration
2018-06-25	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2017-12-15 AGC=105.0 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=25.6C, Tdew=12.2C Zero Air at 350psi, AMP 408.97 at 1350 Tdewspan=15.99 CO2 zero 0.9415 -> 0.9414 Offset: -0.3ppm CO2 span 1.0207 -> 1.0162 Offset: 2.28ppm H2O zero 0.8372 -> 0.8375 Offset: 1.8ppm H2O span 1.0166 -> 1.0237 Offset: -0.15ppm Notes: Calibrated by Joe
2018-04-05	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from BA and brought back to the lab for calibration. It was replaced by sn 0065.
2018-06-25	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2017-12-15 AGC=105.0 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=25.6C, Tdew=12.2C Zero Air at 350psi, AMP 408.97 at 1350 Tdewspan=15.99 CO2 zero 0.9415 -> 0.9414 Offset: -0.3ppm CO2 span 1.0207 -> 1.0162 Offset: 2.28ppm H2O zero 0.8372 -> 0.8375 Offset: 1.8ppm H2O span 1.0166 -> 1.0237 Offset: -0.15ppm Notes: Calibrated by Joe
2018-04-05	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at BA to replace sn 75H-2667, which was brought back to the lab for calibration.
2018-09-26	0065	LI-7500A	Calibration	Lab	Last calibration: 2018-04-04 AGC=99.7 SDM=0 DAC1=0 DAC2=0 Ambient P=100.4kPa, Tair=26.6C, Tdew=13.8C Zero Air at 1600psi, AMP Air 408.97 at 1200 Tdewspan=16.00 CO2 zero 0.8905 -> .8903 Offset: -1.09ppm CO2 span 1.0231 -> 1.0184 Offset: 2.48ppm H2O zero 0.7082 -> .7086 Offset: 2.7ppm H2O span 1.0185 -> 1.0155 Offset: .07ppm Notes:
2018-04-19	TG1-0223	LI-7700	Removed	Gas Analyzer CH4	Removed from Bouldin Alfalfa for calibration. Replaced by sn TG1-0424
2018-04-19	TG1-0424	LI-7700	Installed	Gas Analyzer CH4	Installed on Bouldin Alfalfa to replace sn TG1-0223 for calibration
2018-07-12	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from BA and brought back to the lab for calibration. It was replaced by sn 75H-2150.
2018-09-26	0065	LI-7500A	Calibration	Lab	Last calibration: 2018-04-04 AGC=99.7 SDM=0 DAC1=0 DAC2=0 Ambient P=100.4kPa, Tair=26.6C, Tdew=13.8C Zero Air at 1600psi, AMP Air 408.97 at 1200 Tdewspan=16.00 CO2 zero 0.8905 -> .8903 Offset: -1.09ppm CO2 span 1.0231 -> 1.0184 Offset: 2.48ppm H2O zero 0.7082 -> .7086 Offset: 2.7ppm H2O span 1.0185 -> 1.0155 Offset: .07ppm Notes:
2018-07-12	75H-2150	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at BA to replace sn 0065, which was brought back to the lab for calibration.
2018-10-24	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2018-07-10 AGC=97.5 SDM=0 DAC1=0 DAC2=0 Ambient P=100.6kPa, Tair=26.7C, Tdew=11.95C Zero Air at 1500psi, AMP Air 408.97 at 1100 Tdewspan=16.00 CO2 zero 0.9017 -> .9021 Offset: 1.86ppm CO2 span 1.002 -> 1.0050 Offset: -1.74ppm H2O zero 0.8662 -> .8660 Offset: -1.9ppm H2O span 1.0069 -> 1.0069 Offset: 0.00ppm Notes: No change in H2O span.
2018-10-18	75H-2150	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2667.
2018-10-24	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2018-07-10 AGC=97.5 SDM=0 DAC1=0 DAC2=0 Ambient P=100.6kPa, Tair=26.7C, Tdew=11.95C Zero Air at 1500psi, AMP Air 408.97 at 1100 Tdewspan=16.00 CO2 zero 0.9017 -> .9021 Offset: 1.86ppm CO2 span 1.002 -> 1.0050 Offset: -1.74ppm H2O zero 0.8662 -> .8660 Offset: -1.9ppm H2O span 1.0069 -> 1.0069 Offset: 0.00ppm Notes: No change in H2O span.
2018-10-18	TG1-0424	LI-7700	Removed	Gas Analyzer CH4	Removed from Bouldin Alfalfa for power board upgrade and to swap in for other two 7700s needing upgrade.
2018-10-18	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Bouldin Alfalfa to replace sn 74H-2150 for calibration.
2019-02-11	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2018-10-10 AGC=104 SDM=0 DAC1=0 DAC2=0 Ambient P=101.2kPa, Tair=25.1C, Tdew=2.5C Zero Air at 1175psi, AMP Air 408.97 at 800 Tdewspan=16.00 CO2 zero 0.9412 -> .9425 Offset: 4.87ppm CO2 span 1.0145 -> 1.0143 Offset: 0.15ppm H2O zero 0.8367 -> .8349 Offset: -11.1ppm H2O span 1.0218 -> 1.0222 Offset: -.01ppm Notes: Spanned at "15.99C" in 7550 software with dewpt generator set at 16.00.
2018-11-07	TG1-0421	LI-7700	Installed	Gas Analyzer CH4	Installed at BA. The previous LI-7700 sn TG1-0424 was removed for a power board swap.
2019-01-31	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from BA and brought back to the lab for calibration. It was replaced by sn 0035.
2019-02-11	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2018-10-10 AGC=104 SDM=0 DAC1=0 DAC2=0 Ambient P=101.2kPa, Tair=25.1C, Tdew=2.5C Zero Air at 1175psi, AMP Air 408.97 at 800 Tdewspan=16.00 CO2 zero 0.9412 -> .9425 Offset: 4.87ppm CO2 span 1.0145 -> 1.0143 Offset: 0.15ppm H2O zero 0.8367 -> .8349 Offset: -11.1ppm H2O span 1.0218 -> 1.0222 Offset: -.01ppm Notes: Spanned at "15.99C" in 7550 software with dewpt generator set at 16.00.
2019-01-31	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at BA to replace sn 75H-2667, which was brought back to the lab for calibration.
2019-04-26	0035	LI-7500A	Calibration	Lab	Last calibration: 2019-01-28 AGC=99.2 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=22.6C, Tdew=10.7C Zero Air at 1100psi, AMP CA4396 408.97 at 700 Tdewspan=16.00 CO2 zero 0.9375 -> .9371 Offset: -1.79ppm CO2 span 1.0193 -> 1.0189 Offset: .25ppm H2O zero 0.8969 -> .8989 Offset: 12.3ppm H2O span 1.0023 -> 1.0186 Offset: -.34ppm Notes:
2019-02-12	TG1-0421	LI-7700	Tested	Gas Analyzer CH4	Tried to upgrade firmware from 1.0.23 to 1.0.27, but there was an error, "Fatal: Network Error: Connection Timed out."
2019-04-11	TG1-0421	LI-7700	Upgrade	Gas Analyzer CH4	Upgraded LI-7700 sn TG1-0421 firmware from 1.0.23 to 1.0.27. To connect, Joe had to change the laptop network subnet from 192.168.2.5 to 192.168.1.5 (to match the LI-7700 IP address of 192.168.1.77), even though the subnet mask was 255.255.255.0. We then restarted the instrument and calibrated LI-7700 sn TG1-0421.
2019-04-11	TG1-0421	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: Bouldin Alfalfa Last calibration: 2018-11-06 RSSI=83%, Optical RH=17% Ambient P=101.3kPa, Tair=19.2C Zero Air M4002 at 1600psi, AMP CA03923 3.121 at 1600 CH4 Zero Offset: 0.037ppm CH4 Span Offset: 0.007ppm Notes: Breezy day, upgraded firmware from v1.0.23 to v1.0.27 before calibration
2019-04-25	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2180.
2019-04-26	0035	LI-7500A	Calibration	Lab	Last calibration: 2019-01-28 AGC=99.2 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=22.6C, Tdew=10.7C Zero Air at 1100psi, AMP CA4396 408.97 at 700 Tdewspan=16.00 CO2 zero 0.9375 -> .9371 Offset: -1.79ppm CO2 span 1.0193 -> 1.0189 Offset: .25ppm H2O zero 0.8969 -> .8989 Offset: 12.3ppm H2O span 1.0023 -> 1.0186 Offset: -.34ppm Notes:
2019-04-25	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Bouldin Alfalfa to replace sn 0035 for calibration
2019-08-21	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2019-04-23 AGC=100.8 SDM=0 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=27.83C, Tdew=15.35C Zero Air at 1000psi, AMP CO2 408.97 at 800 Tdewspan=20.0 CO2 zero 0.9136 -> 0.9137 Offset: 0.45ppm CO2 span 1.0266 -> 1.0266 Offset: -0.02ppm H2O zero 0.8886 -> 0.8884 Offset: -1.3ppm H2O span 1.0236 -> 1.0282 Offset: -0.1ppm Notes:
2019-08-07	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from BA and brought back to the lab for calibration. It was replaced by sn 75H-2150.
2019-08-21	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2019-04-23 AGC=100.8 SDM=0 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=27.83C, Tdew=15.35C Zero Air at 1000psi, AMP CO2 408.97 at 800 Tdewspan=20.0 CO2 zero 0.9136 -> 0.9137 Offset: 0.45ppm CO2 span 1.0266 -> 1.0266 Offset: -0.02ppm H2O zero 0.8886 -> 0.8884 Offset: -1.3ppm H2O span 1.0236 -> 1.0282 Offset: -0.1ppm Notes:
2019-08-07	75H-2150	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at BA to replace sn 75H-2180, which was brought back to the lab for calibration.
2020-02-11	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2019-08-01 AGC=101.0 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=26.9C, Tdew=-1.45C Zero Air at 800psi, AMP CA04396 408.97 at 550 Tdewspan=16.0 CO2 zero 0.9022 -> 0.9030 Offset: 3.7ppm CO2 span 1.0086 -> 1.0154 Offset: -3.47ppm H2O zero 0.8673 -> 0.8674 Offset: 0.5ppm H2O span 1.0114 -> 1.0224 Offset: -0.23ppm Notes: First calibration after swapping chemicals and running on the bench for a week. I was expecting to see negative offsets from zero - may still drift a little lower. Ambient air very dry.
2019-08-16	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed for CH4 release experiment. This unit was part of a secondary, lower eddy system
2019-10-30	0073	LI-7500A	Calibration	Lab	Last calibration: 2019-08-14 AGC=99.6 SDM=0 DAC1=- DAC2=- Ambient P=101.0kPa, Tair=27.45C, Tdew=-10.8C Zero Air at 900psi, AMP CA04396 408.97 at 800 Tdewspan=20.0 CO2 zero 0.9576 -> 0.9574 Offset: -0.70ppm CO2 span 1.0095 -> 1.0091 Offset: 0.23ppm H2O zero 0.7318 -> 0.7311 Offset: -4.6ppm H2O span 1.0247 -> 1.0052 Offset: 0.4ppm Notes: Ambient air was very dry. Joe
2019-09-04	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa with the end of the CH4 release experiment. This unit was at the top of the secondary tower
2019-10-30	0073	LI-7500A	Calibration	Lab	Last calibration: 2019-08-14 AGC=99.6 SDM=0 DAC1=- DAC2=- Ambient P=101.0kPa, Tair=27.45C, Tdew=-10.8C Zero Air at 900psi, AMP CA04396 408.97 at 800 Tdewspan=20.0 CO2 zero 0.9576 -> 0.9574 Offset: -0.70ppm CO2 span 1.0095 -> 1.0091 Offset: 0.23ppm H2O zero 0.7318 -> 0.7311 Offset: -4.6ppm H2O span 1.0247 -> 1.0052 Offset: 0.4ppm Notes: Ambient air was very dry. Joe
2019-10-22	TG1-0421	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: Bouldin Alfalfa Last calibration: 2019-04-11 RSSI=84%, Optical RH=22% Ambient P=101.8kPa, Tair=20.9C Zero Air at 1300psi, AMP CA03923 3.121 at 1400 CH4 Zero Offset: 0.022ppm CH4 Span Offset: 0.001ppm Notes: Swapped optics desiccant after calibration using cal gas to dry head space. New RH 7%
2019-11-14	75H-2150	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from BA and brought back to the lab for calibration. It was replaced by 75H-2176.
2020-02-11	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2019-08-01 AGC=101.0 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=26.9C, Tdew=-1.45C Zero Air at 800psi, AMP CA04396 408.97 at 550 Tdewspan=16.0 CO2 zero 0.9022 -> 0.9030 Offset: 3.7ppm CO2 span 1.0086 -> 1.0154 Offset: -3.47ppm H2O zero 0.8673 -> 0.8674 Offset: 0.5ppm H2O span 1.0114 -> 1.0224 Offset: -0.23ppm Notes: First calibration after swapping chemicals and running on the bench for a week. I was expecting to see negative offsets from zero - may still drift a little lower. Ambient air very dry.
2019-11-14	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at BA to replace sn 75H-2150, which was brought back to the lab for calibration.
2020-05-13	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2019-11-13 AGC=100 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=21.6C, Tdew=11.9C Zero Air at 725psi, AMP CA4396 408.97 at 550 Tdewspan=16.00 CO2 zero 0.8675 -> .8672 Offset: -1.42ppm CO2 span 1.0072 -> 1.0081 Offset: -.52ppm H2O zero 0.852 -> .8521 Offset: .8ppm H2O span 0.9123 -> .9159 Offset: -.09ppm Notes:
2020-02-20	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 0035.
2020-05-13	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2019-11-13 AGC=100 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=21.6C, Tdew=11.9C Zero Air at 725psi, AMP CA4396 408.97 at 550 Tdewspan=16.00 CO2 zero 0.8675 -> .8672 Offset: -1.42ppm CO2 span 1.0072 -> 1.0081 Offset: -.52ppm H2O zero 0.852 -> .8521 Offset: .8ppm H2O span 0.9123 -> .9159 Offset: -.09ppm Notes:
2020-02-20	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2176 for calibration.
2020-05-20	0035	LI-7500A	Calibration	Lab	Last calibration: 2020-02-19 AGC=100.1 SDM=0 DAC1=- DAC2=- Ambient P=100.9kPa, Tair=19.9C, Tdew=9.64C Zero Air at 800psi, AMP CA04396 408.97 at 600 Tdewspan=16.0 CO2 zero 0.9373 -> 0.9677 Offset: 1.3ppm CO2 span 1.0158 -> 1.0289 Offset: -6.67ppm H2O zero 0.8981 -> 0.8989 Offset: 5.3ppm H2O span 1.0246 -> 1.0271 Offset: -0.06ppm Notes: Relatively large change in CO2 span
2020-05-19	TG1-0421	LI-7700	Calibration		Calibration Location: Bouldin Alfalfa Last calibration: 2019-10-22 RSSI=76%, Optical RH=4% Ambient P=101.2kPa, Tair=19.0C Zero Air at 900psi, AMP CA3923 3.121 at 975 CH4 Zero Offset: -0.082ppm CH4 Span Offset: 0.004ppm Notes: Breezy day
2020-05-19	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2667.
2020-05-20	0035	LI-7500A	Calibration	Lab	Last calibration: 2020-02-19 AGC=100.1 SDM=0 DAC1=- DAC2=- Ambient P=100.9kPa, Tair=19.9C, Tdew=9.64C Zero Air at 800psi, AMP CA04396 408.97 at 600 Tdewspan=16.0 CO2 zero 0.9373 -> 0.9677 Offset: 1.3ppm CO2 span 1.0158 -> 1.0289 Offset: -6.67ppm H2O zero 0.8981 -> 0.8989 Offset: 5.3ppm H2O span 1.0246 -> 1.0271 Offset: -0.06ppm Notes: Relatively large change in CO2 span
2020-05-19	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 0035 for calibration.
2020-08-25	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2020-05-13 AGC=101.7 SDM=0 DAC1=- DAC2=- Ambient P=100.2kPa, Tair=24.1C, Tdew=15.3C Zero Air at 650psi, AMP CA04396 408.97 at 450 Tdewspan=20.0 CO2 zero 0.9422 -> 0.9420 Offset: -0.9ppm CO2 span 1.0196 -> 1.0172 Offset: 1.23ppm H2O zero 0.838 -> 0.8403 Offset: 14ppm H2O span 1.0313 -> 1.0244 Offset: 0.2ppm Notes: Larger than usual offset in H2O zero
2020-08-21	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from BA for calibration. Replaced by sn 0065.
2020-08-25	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2020-05-13 AGC=101.7 SDM=0 DAC1=- DAC2=- Ambient P=100.2kPa, Tair=24.1C, Tdew=15.3C Zero Air at 650psi, AMP CA04396 408.97 at 450 Tdewspan=20.0 CO2 zero 0.9422 -> 0.9420 Offset: -0.9ppm CO2 span 1.0196 -> 1.0172 Offset: 1.23ppm H2O zero 0.838 -> 0.8403 Offset: 14ppm H2O span 1.0313 -> 1.0244 Offset: 0.2ppm Notes: Larger than usual offset in H2O zero
2020-08-21	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2667 for calibration.
2020-12-08	0065	LI-7500A	Calibration	Lab	Last calibration: 2020-08-20 AGC=101 SDM= DAC1= DAC2= Ambient P=100.8kPa, Tair=23.1C, Tdew=2.5C Zero Air at 550psi, AMP CA4396 408.97 at 300 Tdewspan=20.00 CO2 zero 0.8917 -> .8916 Offset: -.35ppm CO2 span 1.0217 -> 1.0213 Offset: .27ppm H2O zero 0.7297 -> .7303 Offset: 4.5ppm H2O span 1.0186 -> 1.0165 Offset: .05ppm Notes:
2020-11-19	TG1-0421	LI-7700	Moved	Gas Analyzer CH4	Removed from Bouldin Alfalfa for calibration. Replaced by sn TG1-0211. Later we discovered that the 7700 at WP was behaving weirdly so we swapped this instrument in there are calibrated it there.
2020-11-19	TG1-0211	LI-7700	Installed	Gas Analyzer CH4	Installed at Bouldin Alfalfa to replace sn TG1-0421 for calibration.
2020-12-03	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2182.
2020-12-08	0065	LI-7500A	Calibration	Lab	Last calibration: 2020-08-20 AGC=101 SDM= DAC1= DAC2= Ambient P=100.8kPa, Tair=23.1C, Tdew=2.5C Zero Air at 550psi, AMP CA4396 408.97 at 300 Tdewspan=20.00 CO2 zero 0.8917 -> .8916 Offset: -.35ppm CO2 span 1.0217 -> 1.0213 Offset: .27ppm H2O zero 0.7297 -> .7303 Offset: 4.5ppm H2O span 1.0186 -> 1.0165 Offset: .05ppm Notes:
2020-12-03	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 0065 for calibration.
2021-05-25	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2020-11-24 AGC=100.1 SDM=0 DAC1=- DAC2=- Ambient P=100.7kPa, Tair=26.2C, Tdew=10.2C Zero Air at 350psi, AMP CA03923 474.19 at 500 Tdewspan=20.0 CO2 zero 0.885 -> 0.8846 Offset: -1.5ppm CO2 span 1.0259 -> 1.0217 Offset: 2.51ppm H2O zero 0.8473 -> 0.8464 Offset: -6.0ppm H2O span 1.0212 -> 1.0240 Offset: -0.05ppm Notes:
2021-03-04	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa and brought back to the lab for calibration. Replaced by sn 75H-2669.
2021-05-25	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2020-11-24 AGC=100.1 SDM=0 DAC1=- DAC2=- Ambient P=100.7kPa, Tair=26.2C, Tdew=10.2C Zero Air at 350psi, AMP CA03923 474.19 at 500 Tdewspan=20.0 CO2 zero 0.885 -> 0.8846 Offset: -1.5ppm CO2 span 1.0259 -> 1.0217 Offset: 2.51ppm H2O zero 0.8473 -> 0.8464 Offset: -6.0ppm H2O span 1.0212 -> 1.0240 Offset: -0.05ppm Notes:
2021-03-04	75H-2669	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2182 for calibration.
2021-08-31	75H-2669	LI-7500A	Calibration	Lab	Last calibration: 2021-03-01 AGC=100.8 SDM=0 DAC1=- DAC2=- Ambient P=99.7kPa, Tair=26.2C, Tdew=13.6C Zero Air at 1800psi, AMP CA04119 524.77 at 1700 Tdewspan=20.0 CO2 zero 0.919 -> 0.9188 Offset: -0.85ppm CO2 span 1.0059 -> 1.0127 Offset: -4.77ppm H2O zero 0.8984 -> 0.9005 Offset: 13.3ppm H2O span 1.0033 -> 1.0086 Offset: -0.12ppm Notes:
2021-03-11	TG1-0211	LI-7700	Moved	Gas Analyzer CH4	Installed at Hill Slough with site setup. This sensor was removed from BA because our spare 7700 is currently at the factory.
2021-04-15	TG1-0155	LI-7700	Installed	Gas Analyzer CH4	Installed on the BA tower after factory repair/calibration.
2021-06-09	75H-2669	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2176.
2021-08-31	75H-2669	LI-7500A	Calibration	Lab	Last calibration: 2021-03-01 AGC=100.8 SDM=0 DAC1=- DAC2=- Ambient P=99.7kPa, Tair=26.2C, Tdew=13.6C Zero Air at 1800psi, AMP CA04119 524.77 at 1700 Tdewspan=20.0 CO2 zero 0.919 -> 0.9188 Offset: -0.85ppm CO2 span 1.0059 -> 1.0127 Offset: -4.77ppm H2O zero 0.8984 -> 0.9005 Offset: 13.3ppm H2O span 1.0033 -> 1.0086 Offset: -0.12ppm Notes:
2021-06-09	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2669 for calibration.
2021-09-21	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2021-06-07 AGC=100 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=29C, Tdew=11.4C Zero Air at 1550psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.8673 -> .867 Offset: -1.56ppm CO2 span 1.0067 -> 1.0023 Offset: 3.07ppm H2O zero 0.8536 -> .8526 Offset: -5.5ppm H2O span 0.9148 -> .9091 Offset: .14ppm Notes:
2021-09-15	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 0035.
2021-09-21	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2021-06-07 AGC=100 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=29C, Tdew=11.4C Zero Air at 1550psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.8673 -> .867 Offset: -1.56ppm CO2 span 1.0067 -> 1.0023 Offset: 3.07ppm H2O zero 0.8536 -> .8526 Offset: -5.5ppm H2O span 0.9148 -> .9091 Offset: .14ppm Notes:
2021-09-15	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2176 for calibration.
2022-01-11	0035	LI-7500A	Calibration	Lab	Last calibration: 2021-09-13 AGC=100 SDM= DAC1= DAC2= Ambient P=101.6kPa, Tair=27.9C, Tdew=7.6C Zero Air at 980psi, AMP CA04119 524.77 at 1675 Tdewspan=20.00 CO2 zero 0.9373 -> .9372 Offset: -.34ppm CO2 span 1.0163 -> 1.0128 Offset: 2.46ppm H2O zero 0.8991 -> .8986 Offset: -2.4ppm H2O span 1.0291 -> 1.0282 Offset: .02ppm Notes:
2021-12-01	TG1-0155	LI-7700	Calibration		Calibration Location: Bouldin Alfalfa Last calibration: 2021-05-10 RSSI=84%, Optical RH=3% Ambient P=101.7kPa, Tair=21.4C Zero Air at 1050psi, AMP CA04396 1.9317 at 1700 CH4 Zero Offset: .022ppm CH4 Span Offset: -.0087ppm Notes: Relatively still day. Zero air tank pressure uncertain--wonky regulator.
2021-12-14	0035	LI-7500A	Removed		Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2514.
2022-01-11	0035	LI-7500A	Calibration	Lab	Last calibration: 2021-09-13 AGC=100 SDM= DAC1= DAC2= Ambient P=101.6kPa, Tair=27.9C, Tdew=7.6C Zero Air at 980psi, AMP CA04119 524.77 at 1675 Tdewspan=20.00 CO2 zero 0.9373 -> .9372 Offset: -.34ppm CO2 span 1.0163 -> 1.0128 Offset: 2.46ppm H2O zero 0.8991 -> .8986 Offset: -2.4ppm H2O span 1.0291 -> 1.0282 Offset: .02ppm Notes:
2021-12-14	75H-2514	LI-7500A	Installed	none	Installed at Bouldin Alfalfa to replace sn 0035 for calibration.
2022-01-11	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2021-12-09 AGC=99.8 SDM= DAC1= DAC2= Ambient P=101.8kPa, Tair=27.8C, Tdew=6.5C Zero Air at 1000psi, AMP CA04119 524.77 at 1675 Tdewspan=20.00 CO2 zero 0.9048 -> .9049 Offset: -.47ppm CO2 span 1.0101 -> 1.0047 Offset: 3.73ppm H2O zero 0.8413 -> .8391 Offset: -15.1ppm H2O span 1.0349 -> 1.0087 Offset: .57ppm Notes: Second calibration in a month because there was a big jump of 14ppm CO2 when I installed this sensor at BA on 12/14/2021 and removed sn 0035. I took this sensor off from BA on 1/2/2022 to calibrate again and replaced it with sn75H-2176. This time though the CO2 values were very close, so maybe the problem was actually with sn 0035, not this sensor. However, during this calibration the CO2 span offset was 3.73ppm, which is larger than usual. There was also a large H2O zero offset of -15.1 mmol/m3. I thought about changing its chemicals, but they were just changed a year ago so they're probably ok. I will calibrate it again next week to check.
2022-01-02	75H-2514	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration check b/c large jump in CO2 when installing it last visit. Replaced by sn 75H-2176.
2022-01-11	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2021-12-09 AGC=99.8 SDM= DAC1= DAC2= Ambient P=101.8kPa, Tair=27.8C, Tdew=6.5C Zero Air at 1000psi, AMP CA04119 524.77 at 1675 Tdewspan=20.00 CO2 zero 0.9048 -> .9049 Offset: -.47ppm CO2 span 1.0101 -> 1.0047 Offset: 3.73ppm H2O zero 0.8413 -> .8391 Offset: -15.1ppm H2O span 1.0349 -> 1.0087 Offset: .57ppm Notes: Second calibration in a month because there was a big jump of 14ppm CO2 when I installed this sensor at BA on 12/14/2021 and removed sn 0035. I took this sensor off from BA on 1/2/2022 to calibrate again and replaced it with sn75H-2176. This time though the CO2 values were very close, so maybe the problem was actually with sn 0035, not this sensor. However, during this calibration the CO2 span offset was 3.73ppm, which is larger than usual. There was also a large H2O zero offset of -15.1 mmol/m3. I thought about changing its chemicals, but they were just changed a year ago so they're probably ok. I will calibrate it again next week to check.
2022-01-02	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2514 for calibration.
2022-04-19	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2021-12-16 AGC=100.6 SDM= DAC1= DAC2= Ambient P=100.9kPa, Tair=24.5C, Tdew=10.5C Zero Air at 700psi, AMP CA04119 524.77 at 1600 Tdewspan=20.00 CO2 zero 0.867 -> .867 Offset: .13ppm CO2 span 1.0045 -> 1.0081 Offset: -2.65ppm H2O zero 0.8546 -> .8557 Offset: 6.7ppm H2O span 0.8249 -> .9228 Offset: .05ppm Notes: Surprisingly large change in H2OSpan's coefficient despite a small offset. Maybe double check this again before deploying.
2022-04-13	TG1-0155	LI-7700	Removed	Gas Analyzer CH4	Removed from Bouldin Alfalfa and brought back to the lab because we will use it to replace the faulty one from WP. I removed the power cable as well since the WP power cable could be bad. The wash power, wash tubing, and Ethernet cable are still there.
2022-04-13	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 1594.
2022-04-19	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2021-12-16 AGC=100.6 SDM= DAC1= DAC2= Ambient P=100.9kPa, Tair=24.5C, Tdew=10.5C Zero Air at 700psi, AMP CA04119 524.77 at 1600 Tdewspan=20.00 CO2 zero 0.867 -> .867 Offset: .13ppm CO2 span 1.0045 -> 1.0081 Offset: -2.65ppm H2O zero 0.8546 -> .8557 Offset: 6.7ppm H2O span 0.8249 -> .9228 Offset: .05ppm Notes: Surprisingly large change in H2OSpan's coefficient despite a small offset. Maybe double check this again before deploying.
2022-04-13	1594	LI-7500A	Installed	Heat Flux Plate B	Installed at Bouldin Alfalfa to replace sn 75H-2176 for calibration.
2022-11-18	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 0073.
2022-11-18	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 1594, which was removed for calibration.
2023-06-13	0073	LI-7500A	Calibration	Lab	Last calibration: 2022-11-15 AGC=102.2 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.6kPa, Tair=18.8C, Tdew=11.8C Zero Air at 1150psi, AMP CA04119 524.77 at 1050 Tdewspan=16.01 CO2 zero 0.9165 -> 0.9161 Offset: -1.6ppm CO2 span 1.0085 -> 1.0093 Offset: -0.57ppm H2O zero 0.8296 -> 0.8328 Offset: 18.5ppm H2O span 1.0258 -> 1.0281 Offset: -0.4ppm Notes: Calibrate with IRGA vertical - slightly larger than usual H2O zero offset.
2023-04-11	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 0035.
2023-06-13	0073	LI-7500A	Calibration	Lab	Last calibration: 2022-11-15 AGC=102.2 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.6kPa, Tair=18.8C, Tdew=11.8C Zero Air at 1150psi, AMP CA04119 524.77 at 1050 Tdewspan=16.01 CO2 zero 0.9165 -> 0.9161 Offset: -1.6ppm CO2 span 1.0085 -> 1.0093 Offset: -0.57ppm H2O zero 0.8296 -> 0.8328 Offset: 18.5ppm H2O span 1.0258 -> 1.0281 Offset: -0.4ppm Notes: Calibrate with IRGA vertical - slightly larger than usual H2O zero offset.
2023-04-11	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 0073 for calibration.
2023-08-04	0035	LI-7500A	Calibration	Lab	Last calibration: 2023-04-12 AGC=99.4 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.6kPa, Tair=22.6C, Tdew=13.4C Zero Air at 900psi, AMP CA04119 524.77 at 875 Tdewspan=16.00 CO2 zero 0.9375 -> .9377 Offset: 1.06ppm CO2 span 1.0253 -> 1.024 Offset: .82ppm H2O zero 0.8994 -> .8984 Offset: -6.2ppm H2O span 1.0291 -> 1.0205 Offset: .18ppm Notes: Used "span" point of 524.67 for span gas of 524.77. Vertical orientation.
2023-07-24	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2180.
2023-08-04	0035	LI-7500A	Calibration	Lab	Last calibration: 2023-04-12 AGC=99.4 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.6kPa, Tair=22.6C, Tdew=13.4C Zero Air at 900psi, AMP CA04119 524.77 at 875 Tdewspan=16.00 CO2 zero 0.9375 -> .9377 Offset: 1.06ppm CO2 span 1.0253 -> 1.024 Offset: .82ppm H2O zero 0.8994 -> .8984 Offset: -6.2ppm H2O span 1.0291 -> 1.0205 Offset: .18ppm Notes: Used "span" point of 524.67 for span gas of 524.77. Vertical orientation.
2023-07-24	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 0035 for calibration.
2023-09-18	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2023-07-19 AGC=100.7 SDM=0 DAC1=- DAC2=- AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.6kPa, Tair=23.0C, Tdew=14.3C Zero Air at 1750psi, AMP CA04119 524.77 at 1800 Tdewspan=16.0 CO2 zero 0.9143 -> 0.9143 Offset: 0.2ppm CO2 span 1.0374 -> 1.0384 Offset: -0.67ppm H2O zero 0.8941 -> 0.8944 Offset: 2.1ppm H2O span 1.0299 -> 1.0344 Offset: -0.09ppm Notes: This sensor had no mount for bird spikes. Electrical tape that help spikes on left black residue that I removed with Goo-Gone and water and soap. After the CO2 span it was still reading about 0.3 ppm high. This didn't change pushing the calibrate button a second time. I ended up setting the span 0.3ppm less (524.47) and got 524.77. H2O span was really stable.
2023-08-24	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for mount repair. Replaced by sn 0035.
2023-09-18	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2023-07-19 AGC=100.7 SDM=0 DAC1=- DAC2=- AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.6kPa, Tair=23.0C, Tdew=14.3C Zero Air at 1750psi, AMP CA04119 524.77 at 1800 Tdewspan=16.0 CO2 zero 0.9143 -> 0.9143 Offset: 0.2ppm CO2 span 1.0374 -> 1.0384 Offset: -0.67ppm H2O zero 0.8941 -> 0.8944 Offset: 2.1ppm H2O span 1.0299 -> 1.0344 Offset: -0.09ppm Notes: This sensor had no mount for bird spikes. Electrical tape that help spikes on left black residue that I removed with Goo-Gone and water and soap. After the CO2 span it was still reading about 0.3 ppm high. This didn't change pushing the calibrate button a second time. I ended up setting the span 0.3ppm less (524.47) and got 524.77. H2O span was really stable.
2023-08-24	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2180 for mount repair.
2024-01-02	0035	LI-7500A	Calibration	Lab	Last calibration: 2023-08-04 AGC=100.5 SDM=0 DAC1=- DAC2=- AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=101.0kPa, Tair=19.96C, Tdew=8.97C Zero Air at 550psi, AMP CA04119 524.77 at 750 Tdewspan=18.0 CO2 zero 0.9377 -> 0.9372 Offset: -2.0ppm CO2 span 1.024 -> 1.0267 Offset: -1.77ppm H2O zero 0.8984 -> 0.9006 Offset: 13.4ppm H2O span 1.0205 -> 1.0400 Offset: -0.4ppm Notes: I painted some scratches on the body with nail polish
2023-12-22	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2514.
2024-01-02	0035	LI-7500A	Calibration	Lab	Last calibration: 2023-08-04 AGC=100.5 SDM=0 DAC1=- DAC2=- AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=101.0kPa, Tair=19.96C, Tdew=8.97C Zero Air at 550psi, AMP CA04119 524.77 at 750 Tdewspan=18.0 CO2 zero 0.9377 -> 0.9372 Offset: -2.0ppm CO2 span 1.024 -> 1.0267 Offset: -1.77ppm H2O zero 0.8984 -> 0.9006 Offset: 13.4ppm H2O span 1.0205 -> 1.0400 Offset: -0.4ppm Notes: I painted some scratches on the body with nail polish
2023-12-22	75H-2514	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 0035 for calibration.
2024-05-06	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2023-12-20 AGC=100 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.9kPa, Tair=23.3C, Tdew=8.11C Zero Air at 300psi, AMP CA04119 524.77 at 375 Tdewspan=20.00 CO2 zero 0.9095 -> .91 Offset: 1.85ppm CO2 span 1.0207 -> 1.0009 Offset: -.6ppm H2O zero 0.8461 -> .846 Offset: -.5ppm H2O span 0.9962 -> .9936 Offset: .05ppm Notes: From the old configuration file, the CO2 span coefficient was 1.0000. From the database's record of the previous cal on 2023-12-20, the CO2 span coefficient was 1.0207. I used the span coefficient from the old configuration file.
2024-04-16	75H-2514	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 0065.
2024-05-06	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2023-12-20 AGC=100 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.9kPa, Tair=23.3C, Tdew=8.11C Zero Air at 300psi, AMP CA04119 524.77 at 375 Tdewspan=20.00 CO2 zero 0.9095 -> .91 Offset: 1.85ppm CO2 span 1.0207 -> 1.0009 Offset: -.6ppm H2O zero 0.8461 -> .846 Offset: -.5ppm H2O span 0.9962 -> .9936 Offset: .05ppm Notes: From the old configuration file, the CO2 span coefficient was 1.0000. From the database's record of the previous cal on 2023-12-20, the CO2 span coefficient was 1.0207. I used the span coefficient from the old configuration file.
2024-04-16	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2514 for calibration.
2024-09-26	0065	LI-7500A	Calibration	Lab	Last calibration: 2024-04-15 AGC=95.1 SDM=0 DAC1=- DAC2=- AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.0kPa, Tair=24.7C, Tdew=14.6C Zero Air at 1350psi, AMP CA03923 488.75 at 1450 Tdewspan=20.0 CO2 zero 0.8916 -> 0.8913 Offset: -1.5ppm CO2 span 1.024 -> 1.0229 Offset: 0.7ppm H2O zero 0.7329 -> 0.7336 Offset: 5.7ppm H2O span 1.021 -> 1.0269 Offset: -0.12ppm Notes:
2024-07-22	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2667.
2024-09-26	0065	LI-7500A	Calibration	Lab	Last calibration: 2024-04-15 AGC=95.1 SDM=0 DAC1=- DAC2=- AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.0kPa, Tair=24.7C, Tdew=14.6C Zero Air at 1350psi, AMP CA03923 488.75 at 1450 Tdewspan=20.0 CO2 zero 0.8916 -> 0.8913 Offset: -1.5ppm CO2 span 1.024 -> 1.0229 Offset: 0.7ppm H2O zero 0.7329 -> 0.7336 Offset: 5.7ppm H2O span 1.021 -> 1.0269 Offset: -0.12ppm Notes:
2024-07-22	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 0065 for calibration.
2025-01-07	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2024-07-19 AGC=98.8 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=101.0kPa, Tair=25.9C, Tdew=2.99C Zero Air at 900psi, AMP FB04319 514.07 at 400 Tdewspan=20.00 CO2 zero 0.9416 -> .9410 Offset: -2.32ppm CO2 span 1.0177 -> 1.0165 Offset: .64ppm H2O zero 0.8407 -> .8454 Offset: 29.2ppm H2O span 1.0371 -> 1.0393 Offset: -.04ppm Notes: Larger H2O zero offset (29.2 mmol/m3) than usual, but it was offset by the offset from the previous calibration (-20.2 mmol/m3). There is a consistent drift in the H2O zero coefficient since 2023. I don't think the chemicals have been swapped since 2016, so I could do that next time. Used "514.03" as CO2 span point in the 7550 software.
2024-11-06	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 0073.
2025-01-07	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2024-07-19 AGC=98.8 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=101.0kPa, Tair=25.9C, Tdew=2.99C Zero Air at 900psi, AMP FB04319 514.07 at 400 Tdewspan=20.00 CO2 zero 0.9416 -> .9410 Offset: -2.32ppm CO2 span 1.0177 -> 1.0165 Offset: .64ppm H2O zero 0.8407 -> .8454 Offset: 29.2ppm H2O span 1.0371 -> 1.0393 Offset: -.04ppm Notes: Larger H2O zero offset (29.2 mmol/m3) than usual, but it was offset by the offset from the previous calibration (-20.2 mmol/m3). There is a consistent drift in the H2O zero coefficient since 2023. I don't think the chemicals have been swapped since 2016, so I could do that next time. Used "514.03" as CO2 span point in the 7550 software.
2024-11-06	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Bouldin Alfalfa to replace sn 75H-2667 for calibration.
2025-01-30	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Bouldin Alfalfa for calibration. Replaced by sn 75H-2669.
2025-01-30	75H-2669	LI-7500A	Installed	none	Installed at Bouldin Alfalfa to replace sn 0073 for calibration.
Heat Flux Plate
2016-08-12	10866	HFP01	Installed	Heat Flux Plate A	Installed with the initial set up of the site.
2016-08-12	11334	HFP01	Installed	Heat Flux Plate B	Installed with the initial set up of the site.
2016-08-12	11332	HFP01	Installed	Heat Flux Plate C	Installed with the initial set up of the site.
2016-10-06	11334	HFP01	Removed	Heat Flux Plate B	Removed with soil sensor Set B from Bouldin Alfalfa. This set was hit by a mower.
2016-11-22	11334	HFP01	Installed	Heat Flux Plate B	Reinstalled at the Bouldin Alfalfa tower. This SHF plate was installed about 1m west of the tower at about 1cm deep.
2024-10-09	11334	HFP01	Moved	Heat Flux Plate B	BA tower was moved temporarily to the edge of the field by the ditch to make way for plowing/planting. This sensor was removed from the field and reinstalled under the temporary tower location.
2024-10-09	10866	HFP01	Removed	Heat Flux Plate A	Removed from BA tower and brought back to the lab. The BA field is getting plowed.
2024-10-09	11332	HFP01	Removed	Heat Flux Plate C	Removed from BA tower and brought back to the lab. The BA field is getting plowed. This sensor got hit by the plow and the wire was cut, but we recovered the sensor.
2024-10-24	11334	HFP01	Moved	Heat Flux Plate B	Moved from under the tower into the field after wheat was planted
2024-10-24	10866	HFP01	Installed	Heat Flux Plate A	Installed in the field after wheat was planted
2024-10-24	11332	HFP01	Installed	Heat Flux Plate C	Installed in the field after wheat was planted
Infrared Temperature
2021-06-16	1071	SI-131	Installed	Infrared Temperature North	Installed as part of Kevin Tu's surface renewal experiment
2021-06-16	1635	SI-121	Installed	Infrared Temperature South	Installed as part of Kevin Tu's surface renewal experiment
2024-01-04	1071	SI-131	Removed	Infrared Temperature North	Removed from BA tower at the conclusion of Corteva's IRT experiment.
2024-01-04	1635	SI-121	Removed	Infrared Temperature South	Removed from BA tower at the conclusion of Corteva's IRT experiment.
Interface
2016-08-12	AIU-1568	LI-7550	Installed	Interface LI-7550	Installed with the initial set up of the site.
2016-08-12	9774	NL115	Installed	none	Installed at BA with initial site set up
2021-04-15	AIU-1568	LI-7550	Upgrade	Interface LI-7550	Upgraded firmware from v8.5.0 to v8.8.32
Multiplexer
2016-08-12	7907	AM25T	Installed	Multiplexer Thermocouple	Installed with the initial set up of the site.
2016-08-12	21688	AM16/32B	Installed	Multiplexer Met	Installed with the initial set up of the site.
Narrow Band
2016-08-12	913003012	SRS-Pi PRI	Installed	Narrow Band PRI Incoming	Installed with the initial set up of the site.
2016-08-12	930103961	SRS-Pr PRI	Installed	Narrow Band PRI Reflected	Installed with the initial set up of the site.
2016-08-12	877203409	SRS-Ni NDVI	Installed	Narrow Band NDVI Incoming	Installed with the initial set up of the site.
2016-08-12	943203017	SRS-Nr NDVI	Installed	Narrow Band NDVI Reflected	Installed with the initial set up of the site.
2017-02-01	882103021	SRS-Ni NDVI	Installed	Narrow Band NDVI Reflected	Installed on the Bouldin Alfalfa tower in the reflected/outgoing position to compare against the existing field stop sensor.
2017-06-05	943203017	SRS-Nr NDVI	Removed	Narrow Band NDVI Reflected	Removed because we have already installed a downward-facing NDVI sensor with hemispherical view.
2018-07-12	930103961	SRS-Pr PRI	Removed	Narrow Band PRI Reflected	Removed from BA because 570nm reading has been close to 0 since 2018-06-20.
2018-07-26	930103961	SRS-Pr PRI	Installed	Narrow Band PRI Reflected	Installed again at BA after spider's nest was cleaned out of one of its lenses.
2020-04-17	1061	S2-431	Installed	Narrow Band NDVI Incoming Test	Installed at BA in the incoming position.
2020-04-17	1063	S2-431	Installed	Narrow Band NDVI Reflected Test	Installed at BA in the reflected position.
2020-05-19	1061	S2-431	Removed	Narrow Band NDVI Incoming Test	Removed from BA because it was sending NANs and brought back to the lab for testing.
2020-05-19	1063	S2-431	Removed	Narrow Band NDVI Reflected Test	Removed from BA because it was sending NANs and brought back to the lab for testing.
2020-08-05	1049	S2-411	Installed	Narrow Band NDVI Incoming Test	Installed at BA in the NDVI incoming position
2020-08-05	1050	S2-411	Installed	Narrow Band NDVI Reflected Test	Installed at BA in the NDVI outgoing position
2021-05-27	1049	S2-411	Moved	Narrow Band NDVI Incoming Test	Removed from the incoming position at BA where it was redundant with the SRS NDVI sensor for use with the cal kit subsequently installed at BC in the incoming position
2021-05-27	1050	S2-411	Moved	Narrow Band NDVI Reflected Test	Removed from the reflected position at BA where it was redundant with the SRS NDVI sensor for use with the cal kit subsequently installed at BC in the reflected position
2022-08-31	913003012	SRS-Pi PRI	Removed	Narrow Band PRI Incoming	Removed from the BA main tower because it was shorting out the whole met system. Brought back to the lab.
2024-07-17	930103961	SRS-Pr PRI	Removed	Narrow Band PRI Reflected	Removed from BA and brought back to the lab. This sensor is decommissioned b/c no one is using this data.
Net Radiometer
2016-08-12	2418	NR01	Installed	Net Radiometer 4-way	Installed with the initial set up of the site.
PAR Sensor
2016-08-12	140452	PQS 1	Installed	PAR Sensor Incoming	Installed with the initial set up of the site. This is pointing up and measuring PARin (incoming PAR).
2016-08-12	140451	PQS 1	Installed	PAR Sensor Reflected	Installed with the initial set up of the site. This sensor is pointing down and measuring PAR out (reflected PAR).
2020-04-17	030380	PAR-LITE	Installed	PAR Sensor Under-A	Installed at BA at ground surface protected by a PVC collar to try to measure below canopy PAR.
Precipitation
2016-08-12	65560-615	TE525MM	Installed	Precipitation	Installed with the initial set up of the site.
2018-10-18	65560-615	TE525MM	Calibration	Precipitation	Got 90 of 100 tips. Adjusted screws a total of 2.5 turns CW. 2018-10-18: Got 90 tips and adjusted screws 1 turn CW. 2018-11-01: Got 91 tips and adjusted screws 2 turns CCW accidentally (should have been CW). 2018-12-13: Got 86 tips and adjusted screws 4.5 turns CW. 2018-12-18: Got 107 tips and adjusted screws 1 turn CCW.
2019-10-22	65560-615	TE525MM	Calibration	Precipitation	After cleaning the tipping bucket we connected it to a CR23x and dripped 475ml of water through the bucket which should result in 100 tips. We got 103 tips – no adjustment needed.
2020-11-19	65560-615	TE525MM	Tested	Precipitation	After cleaning the tipping bucket we connected it to a CR23x and dripped 475ml of water through the bucket which should result in 100 tips. We got 106 tips. We will retest with better water metering system
2021-10-21	65560-615	TE525MM	Tested	Precipitation	We dripped 240ml of water through the bucket using a peristaltic pump powered with a lithium battery. This should result in 50 tips in about 20 minutes. We got 54 tips and adjusted its set screws 1.5 turns CCW (1/2 turn of both screws is a 2-3% adjustment).
2021-11-18	65560-615	TE525MM	Calibration	Precipitation	We dripped 240ml of water through the bucket using a peristaltic pump powered with a lithium battery. This should result in 50 tips in about 20 minutes. We got 52 tips and I adjusted both set screws 1 turn CCW.
2021-12-01	65560-615	TE525MM	Tested	Precipitation	We dripped 240ml of water through the bucket using a peristaltic pump powered with a lithium battery. This should result in 50 tips in about 20 minutes. We got 50 tips so this bucket is good to go until next year.
Range Finder
2019-04-25	URM06-001	URM06	Installed		Installed on the Boldin Alfalfa radiation boom about 262cm above the ground to measure veg height.
2019-06-20	URM06-001	URM06	Moved	Range Finder	Moved from BA to BC to look at corn height. It was installed on the BC radiation boom.
RH & Temp
2016-08-12	L1740398	HMP60	Installed	RH & Temp	Installed with the initial set up of the site.
2018-08-23	L1740398	HMP60	Removed	RH & Temp	Removed from BA due to low temperature readings. Several other HMP60s have similarly failed.
2018-08-23	T1250012	HMP45AC	Installed	RH & Temp	Installed on BA to replace an HMP60 with low temperature readings. This sensor was in the TA inter-comparison T slope was 1.0462 and RH slope was 1.0369.
2019-10-02	L1740398	HMP60	Removed	0	Removed from BA CH4 release experiment and brought back to the lab.
2020-11-19	T1250012	HMP45AC	Removed	RH & Temp	Removed from Bouldin Alfalfa to be returned to Siyan. Replaced by sn G4540021
2020-11-19	G4540021	HMP60	Installed	RH & Temp	Installed at Bouldin Alfalfa to replace sn T1250012 that needs to be returned to Siyan.
2021-03-16	G4540021	HMP60	Removed	RH & Temp	Removed from BA and brought back to the lab b/c AirT has been drifting low. it was replaced by HMP155 sn S3420870.
2021-03-16	S3420870	HMP155	Installed	RH & Temp	Installed at BA to replace sn G4540021, which was brought back to the lab for testing.
2021-03-30	S3420870	HMP155	Removed	RH & Temp	Removed from BA and brought back to the lab for repair. This sensor had fallen to the ground. The cable head needs rewiring.
2021-04-15	S3420870	HMP155	Installed	RH & Temp	Installed on the BA tower after reconnecting sensor to cable screw terminals in the lab. The collar has a metal set screw.
2021-08-04	T1250012	HMP45AC	Installed	none	Installed on the BA bouncer tower next to the upper sonic for the advection experiment. It was wired to U9/U10.
2021-08-04	U3030041	HMP45AC	Installed	none	Installed on the BA bouncer tower next to the lower sonic for the advection experiment. It was wired to U11/U12.
2021-09-03	T1250012	HMP45AC	Removed		Removed from BA bouncer tower, where it was the upper T/RH sensor. It was replaced by sn T2820180.
2021-09-03	U3030041	HMP45AC	Removed		Removed from BA bouncer tower, where it was the lower T/RH sensor. It was replaced by sn T2820183.
2021-09-03	T2820180	HMP155	Installed	none	Installed on the BA bouncer tower for the advection experiment in the upper T/RH location.
2021-09-03	T2930114	HMP155	Installed	none	Installed on the main BA tower (lower location) for the advection experiment
2021-09-03	T2820183	HMP155	Installed	none	Installed on the BA bouncer tower for the advection experiment in the lower T/RH location
2021-11-05	T2820183	HMP155	Moved	none	Removed from bouncer tower (lower position) at the conclusion of this year's advection experiment and installed on the main tower for an HMP intercomparison
2021-11-05	T2930114	HMP155	Moved	none	Removed from main tower (lower position) at the conclusion of this year's advection experiment and installed on the main tower for an HMP intercomparison
2021-11-18	T2930114	HMP155	Removed		Removed from BA tower at the conclusion of the HMP155 intercomparison.
2021-11-18	T2820183	HMP155	Removed		Removed from BA tower at the conclusion of the HMP155 intercomparison.
2021-11-18	U3030041	HMP45AC	Installed	none	Installed on BA tower for an HMP45 intercomparison with the tower HMP155.
2021-11-18	T1250012	HMP45AC	Installed	none	Installed on BA tower for an HMP45 intercomparison with the tower HMP155.
2021-12-01	U3030041	HMP45AC	Removed	none	Removed from the BA HMP intercomparison from wiring position DE1/2 because it was giving bad data. It was brought back to the lab for testing.
2021-12-14	T1250012	HMP45AC	Removed		Removed from BA at the conclusion of the HMP intercomparison
Soil Moisture Probe
2016-08-12	M003369	ML3	Installed	Soil Moisture Probe Theta	Installed with the initial set up of the site.
2016-08-12	17127	CS655	Installed	Soil Moisture Probe A	Installed with the initial set up of the site.
2016-08-12	17134	CS655	Installed	Soil Moisture Probe B	Installed with the initial set up of the site.
2016-08-12	17132	CS655	Installed	Soil Moisture Probe C	Installed with the initial set up of the site.
2016-10-06	17134	CS655	Removed	Soil Moisture Probe B	Removed with soil sensor Set B from Bouldin Alfalfa. This set was hit by a mower.
2016-11-22	17135	CS655	Installed	Soil Moisture Probe B	Installed at the Bouldin Alfalaf Tower to replace the on destroyed by the mower. It was buried horizontally at about 2.5cm depth. The data logger program was not updated for the new SDM address until 2016-12-21
2024-10-09	M003369	ML3	Moved	Soil Moisture Probe Theta	BA tower was moved temporarily to the edge of the field by the ditch to make way for plowing/planting. This sensor was removed from the field and reinstalled under the temporary tower location.
2024-10-09	17135	CS655	Moved	Soil Moisture Probe B	BA tower was moved temporarily to the edge of the field by the ditch to make way for plowing/planting. This sensor was removed from the field and reinstalled under the temporary tower location.
2024-10-09	17127	CS655	Removed	Soil Moisture Probe A	Removed from BA tower and brought back to the lab. The BA field is getting plowed.
2024-10-09	17132	CS655	Removed	Soil Moisture Probe C	Removed from BA tower and brought back to the lab. The BA field is getting plowed. This sensor got hit by the plow and one of its rods is sharply bent.
2024-10-24	M003369	ML3	Moved	Soil Moisture Probe Theta	Moved from under the tower into the field after wheat was planted
2024-10-24	17135	CS655	Moved	Soil Moisture Probe B	Moved from under the tower into the field after wheat was planted
2024-10-24	17127	CS655	Installed	Soil Moisture Probe A	Installed in the field after wheat was planted
2024-10-24	17132	CS655	Installed	Soil Moisture Probe C	Installed in the field after wheat was planted
Solar Controller
2016-08-12	KB04511	MNKID-B	Installed	Solar Controller	Installed with the initial set up of the site.
2021-06-16	1688	CH150	Installed	Solar Controller Surface Renewal	Installed as part of Kevin Tu's surface renewal experiment
2024-01-04	1688	CH150	Removed	Solar Controller Surface Renewal	Removed from BA tower at the conclusion of Corteva's IRT experiment.
Solar Panel
2016-08-12	158APW4M0000191	KU265-6MCA	Installed	Solar Panel B	Installed with the initial set up of the site.
2016-08-12	158APW4M0000187	KU265-6MCA	Installed	Solar Panel A	Installed with the initial set up of the site.
Weather Station
2018-02-28	A000591	Mark I	Installed	Weather Station A	Installed on the top, south rail of the scaffolding, between the radiation boom and the precip bucket. I leveled the sensor, but it was not pointing N because I prioritized aiming the downward-facing sensors towards the alfalfa. I also set up the Arable’s auxillary solar panel between the Arable and the precip bucket.
2018-11-02	A000591	Mark I	Notes	Weather Station A	Arable e-mailed to say sn A000591 which has a bad backup temperature sensor and requested we send it back. Not knowing what the exact source of the failure is, and having checked and found no similar behavior in any other device, they want to find out why. We planned to remove this Arable on 2018-10-04, but instead removed sn A000251 from BC and sent that Arable back to the factory. The Arable at BC was replaced by sn A001911. sn A000591 is still at BA for now.
2018-11-28	A000591	Mark I	Removed	Weather Station A	Removed from BA and brought back to the lab. We will send this back to Arable b/c they noticed a faulty thermocouple. It was replaced by A000251.
2018-11-28	A000251	Mark I	Installed	Weather Station A	Installed at BA to replace sn A000591, which will be sent back to Arable for inspection.
2018-12-13	A000251	Mark I	Removed	Weather Station A	Brought back to the lab because it did not seem to be charging in the field. Seemed to charge up fine in the lab.
2018-12-18	A000251	Mark I	Installed	Weather Station A	The Arable Mark was reinstalled after charging in the lab.
2019-04-25	A001311	Mark I	Installed	Weather Station B	Installed by Loreli and Mikaela from Arable for an inter-comparison experiment.
2019-05-23	C002469	Mark II	Installed	Weather Station C	Installed on the southwest end of the scaffolding for inter-comparison with the existing Mark I unit and our tower data. The Mark I unit was also move from near the eddy equipment to the southwest railing.
2019-06-20	A000251	Mark I	Removed	Weather Station A	Removed for use elsewhere since there are two other units on the tower courtesy of Arable.
2020-04-17	C002469	Mark II	Removed	Weather Station C	Removed from Bouldin Alfalfa and replaced by sn C003240. The old one was a prototype and the new one is from the production run.
2020-04-17	C003240	Mark II	Installed	Weather Station C	Installed at Bouldin Alfalfa to replace sn C002469. The old one was a prototype and the new one is from the production run.
2020-05-29	C003947	Mark II	Installed	Weather Station PL_S-B	Installed on an orange post about 40m northeast of the tower. This is part of the Planet Labs / Arable inter-comparison
2020-05-29	C003751	Mark II	Installed	Weather Station PL_S-A	Installed on an orange post about 40m northeast of the tower. This is part of the Planet Labs / Arable inter-comparison
2020-05-29	C003800	Mark II	Installed	Weather Station PL_N-A	Installed on an orange post about 70m northeast of the tower. This is part of the Planet Labs / Arable inter-comparison
2020-05-29	C003789	Mark II	Installed	Weather Station PL_N-B	Installed on an orange post about 70m northeast of the tower. This is part of the Planet Labs / Arable inter-comparison
2021-01-21	A001311	Mark I	Removed	Weather Station B	Removed from Bouldin Alfalfa as Mark I's are being phased out. Replaced by Mark II sn C006164.
2021-01-21	C003789	Mark II	Removed	Weather Station PL_N-B	Removed from the northwest Planet Labs location due to broken antenna caused by sheep
2021-01-21	C003800	Mark II	Removed	Weather Station PL_N-A	Removed from the northeast Planet Labs location due to broken antenna caused by sheep
2021-01-21	C006164	Mark II	Installed	Weather Station B	Installed at Bouldin Alfalfa to replace Mark I sn A001311 which are being phased out.
2021-02-04	C006282	Mark II	Installed	Weather Station PL_N-A	Installed on the northern Planet Labs post to replace one of the two units eaten by the sheep
2021-02-04	C006322	Mark II	Installed	Weather Station PL_N-B	Installed on the northern Planet Labs post to replace one of the two units eaten by the sheep
2021-06-16	C006322	Mark II	Removed	Weather Station PL_N-B	Removed as requested by Arable
2021-06-16	C006282	Mark II	Removed	Weather Station PL_N-A	Removed as requested by Arable
2021-06-16	C003751	Mark II	Removed	Weather Station PL_S-A	Removed as requested by Arable
2022-03-31	C003947	Mark II	Removed	Weather Station PL_S-B	Removed from Bouldin Alfalfa and replaced by sn C011018.
2022-03-31	C011018	Mark II	Installed	Weather Station PL_S-B	Installed at Bouldin Alfalfa to replace sn C003947.
2022-10-18	C006164	Mark II	Removed	Weather Station B	Removed from BA (western position) because its T/RH sensor is broken. Brought back to the lab to ship back to Arable. It was replaced by sn C013433.
2022-10-18	C003240	Mark II	Removed	Weather Station C	Removed from BA (eastern position) because its T/RH sensor is broken. Brought back to the lab to ship back to Arable. It was replaced by sn C013311.
2022-10-18	C013433	Mark II	Installed	Weather Station B	Installed at BA (western position) to replace sn C006164, which was removed b/c of a broken T/RH sensor.
2022-10-18	C013311	Mark II	Installed	Weather Station C	Installed at BA (eastern position) to replace sn C003240, which was removed b/c of a broken T/RH sensor.
2022-11-18	C013433	Mark II	Removed	Weather Station B	Removed from BA main tower (south side of scaffolding) since we don't need 3 Arables on one tower. We are installing a Mark 3 today and we already have a Mark II that is connected to the wind set and the Sentek soil moisture profile probe.
2022-11-18	B301045	Mark 3	Installed	Weather Station B	Installed at BA main tower on the north side of the scaffolding. The solar panel is facing south and the sensors are facing north, above the met/IRT enclosures.
2023-09-12	C011018	Mark II	Removed	Weather Station PL_S-B	Removed with post and ground anchor since the PL-Arable project is currently paused according to PL. This unit had one red status light (bad sensors?) when I shut it down.
2024-02-14	B301045	Mark 3	Removed	Weather Station B	Removed from Bouldin Alfalfa. Replaced by sn D006812.
2024-02-14	D006812	Mark 3	Installed	Weather Station B	Installed at Bouldin Alfalfa to replace sn B301045

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