Equipment and Calibration

Equipment history at West Pond

| ALL | | Anemometer || Barometer || Battery Bank || Camera || CO2 Probe || Conductivity Sensor || Data Logger || DO Sensor || Gas Analyzer || Interface || Multiplexer || Narrow Band || Net Radiometer || PAR Sensor || RH & Temp || Solar Controller || Solar Panel || Water Level || 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
2012-05-02	120907	WM 1590	Installed	Anemometer	Installed on folding boom at the top of the tower.
2012-10-18	000603	SATI-3K	Installed	Anemometer ATI	Removed from the Sherman tower and installed on the West Pond. The Sherman system was returned to configuration before installing the ATI. At West Pond, the ATI was installed northeast of the Gill WMP just west (and upwind) of the LI7500. The data is recorded by a separate CR1000 in the box that Robin supplied with the ATI.
2012-11-08	000603	SATI-3K	Removed	Anemometer ATI	Removed from West Pond after a three week inter-comparison.
2017-01-17	120907	WM 1590	Removed	Anemometer	Removed from West Pond and returned to lab for firmware upgrade. It was replaced by sn 120908.
2017-01-17	120908	WM 1590	Installed	Anemometer	Installed on West Pond tower to replace sn 120907.
2024-02-28	120908	WM 1590	Removed	Anemometer	Removed from WP as part of its decomissioning
Barometer
2012-04-17	H0160076	PTB110	Installed	Barometer	Installed in box at west pilot pond. Not running because of forgotten power connector.
2024-05-01	H0160076	PTB110	Removed	Barometer	Removed with the decommissioning of the site.
Battery Bank
2012-05-02	BB-WP	BB-Fab	Installed	Battery Bank	This is the initial installation of this battery bank for the West Pond Tower. Six deep cycle marine batteries from O'Reilly Auto Parts part #27DCM 175min reserve capacity were installed in parallel for a 12V system.
2017-05-18	BB-WP	BB-Fab	Upgrade	Battery Bank	All the old batteries but one load tested week and the tower has been losing power overnight. The old batteries were replaced with new batteries from Napa Auto Parts, part #BAT 8270, 180min reserve capacity. The three old 12V 140W solar panels were replaced with two new 24V 265W panels and the battery bank was rewired as three pairs for a 24V system.
2023-01-18	BB-WP	BB-Fab	Tested	Battery Bank	The batteries looked clean and in good condition. After disconnecting and isolating them, two of the six tested bad: 4 and 5 counting from the west. The system is wired in pairs for 24V and the two bad batteries were members of adjacent pairs. They were also the only ones that had cells that were low on water. Joe removed the two bad batteries then reconnected the remaining four.
2023-09-19	BB-WP	BB-Fab	Maintenance	Battery Bank	I disconnected the batteries and tested them with the load tester. The first three from the west tested okay but the last one on the east tested weak. These are wired in 24V pairs and the one paired with the weak battery had a bunch of corrosion on its positive terminal. So I disconnected these two and left the system running on a single pair. I also check the water levels and added a little water to a couple of cells that were low.
2023-10-04	BB-WP	BB-Fab	Adjusted	Battery Bank	Joe added a 4th flooded battery that tested good (2019 sticker, not sure where this battery came from--maybe removed from HS when those batteries were replaced by the 4 newer advection batteries). There are now 4 batteries connected in 24V. Hopefully this prevents the tower from dying every night.
2024-05-01	BB-WP	BB-Fab	Disposed	Battery Bank	Four of five batteries were still connected. All but one battery tested bad with the load tester. All removed and disposed.
Camera
2023-01-18	RPI0W-006	RPI0W	Installed	none	Installed at West Pond for an intercomparison with the Canon camera. Temporarily ziptied to the bottom of the Canon enclosure arm. Facing west, same direction as the Canon camera.
2024-05-01	RPI0W-006	RPI0W	Moved	Camera	Move to East End to provide inter-comparison from new higher location and changed file name from "WP_picam_" to "EE_picam_"
CO2 Probe
2013-01-17	H1310008	GMP221	Installed	CO2 probe A	Installed in a teflon sock in the water near the other water sensors
2014-01-23	GP2013ex01	GP-001ex	Installed	CO2 Probe B	This 0 to 3% probe was installed at West Pond. The CR1000 program was updated for three SE measurements: CO2, temp and RH.
2014-02-10	GP2013ex01	GP-001ex	Removed	CO2 Probe B	Removed for West Pond due to bad readings - probably water damage.
2014-02-25	H1310008	GMP221	Removed	CO2 probe A	Removed from West Pond due to bad readings. Initial inspection in the field revealed the probe to be wet inside the Teflon sock. The black plastic dip sealing the top of the sock may have leaked. There was black residue inside the sock. Test in the lab before list as dead.
2014-06-26	GP20140009	GP-001	Installed	CO2 Probe B	This 0 to 2% probe was installed at West Pond to hang off scaffold leg 5 cm below surface. No program change, using existing SE channels from last Forerunner probe.
2014-10-02	GP20140009	GP-001	Removed	CO2 Probe B	Removed from West Pond due to over range readings. It was replaced by a 0 to 4% probe sn GP20140021.
2014-10-02	GP20140021	GP-001	Installed	CO2 Probe B	Installed at West Pond to replace the current 2% probe sn GP20140009.
2015-01-20	GP20140021	GP-001	Removed	CO2 Probe B	Removed from West Pond. Replaced by sn GP20140022 that now has a copper mesh.
2015-01-20	GP20140022	GP-001	Installed	CO2 Probe B	Installed at West Pond with copper mesh replacing sn GP20140021 that did not have copper mesh.
2015-12-08	GP20140022	GP-001	Removed	CO2 Probe B	This 4% probe was removed from West Pond. It was replaced by an 8% probe sn GP20150100
2015-12-08	GP20150100	GP-001	Installed	CO2 Probe B	This 8% probe was installed at West Pond to replace the 4% probe sn GP20140022
2017-02-13	GP20150100	GP-001	Removed	CO2 Probe B	Removed form West Pond due to bad readings.
2017-02-23	GP20150109	GP-001	Installed	CO2 Probe B	Installed at West Pond in the same location as the previous one.
2017-06-05	GP20150109	GP-001	Removed	CO2 Probe B	Removed from West Pond because it was giving funky numbers after the water level went down.
2017-06-05	GP20140017	GP-001	Installed	CO2 Probe B	Installed at West Pond to replace sn GP2015019.
2017-08-02	GP20140017	GP-001	Removed	CO2 Probe B	Removed from West Pond due to railed high CO2 readings and no change when removed from the water. Temperature looked okay
2017-08-16	GP20140018	GP-001	Installed	CO2 Probe B	Installed at WP to replace a previous bad eosGP
2018-10-25	GP20140018	GP-001	Removed	CO2 Probe B	Removed from WP because of high readings. It was replaced by sn GP20140026 two weeks later.
2018-11-01	GP20140026	GP-001	Installed	CO2 Probe B	Installed at WP to replace sn GP20140018, which was brought back to the lab for too-high readings.
2019-08-19	GP20140026	GP-001	Removed	CO2 Probe B	Removed from WP and brought back to the lab for testing out (it was maxing out at 2% even in the air).
2019-09-18	GP20140026	GP-001	Installed	CO2 Probe B	Reinstalled at the northwest corner of the scaffolding. The water level is low so it is sitting in a puddle for the time being.
2021-02-04	GP20140026	GP-001	Removed	CO2 Probe B	Removed from WP and brought back to the lab b/c this sensor has been reading noise since late Nov
Conductivity Sensor
2012-04-17	6096	CS547A	Installed	Conductivity Sensor	Installed on post northwest of scaffolding at west pilot pond. Not running because of forgotten power connector.
2020-05-29	6096	CS547A	Calibration	Conductivity Sensor	Calibration in the field with DI water (0 mS) and a YSI solution (10,000 uS). Temperature-corrected mS/cm readings from the data logger, where the temperature correction occurs in the data logger program. In DI water: 0.00mS/cm, 20.9C In 10,000 uS calibration soln: 10.3mS/cm, 23.0C Calibration: (Corrected mScm) = 0.9709 * (Sensor mScm)
2024-02-12	6096	CS547A	Removed	Conductivity Sensor	Removed from WP with interface sn 3586 and brought back to the lab. Nothing wrong with the data (probably), I just wanted an extra sensor in the lab to play around with TempCoef.
Data Logger
2012-04-17	47109	CR1000	Installed	Data Logger Met	Installed in box at west pilot pond. Not running because of forgotten power connector.
2012-10-18	47108	CR1000	Installed	Data Logger ATI	Installed in the box that Robin supplied with the ATI sonic at West Pond. This CR1000 is setup to collect the serial stream from the ATI sonic for a comparison.
2012-11-08	47108	CR1000	Removed	Data Logger ATI	Removed from West Pond with the ATI sonic after a three week inter-comparison
2019-01-31	47109	CR1000	Serviced	Data Logger Met	Changed Pakbus address from 1 to 9.
2021-06-22	23865	CR1000	Moved	none	Moved from HS to WP as part of the radiometer calibration kit at the conclusion of the 2-week intercomparison at HS.
2021-07-21	23865	CR1000	Moved		Moved from West Pond to East End at the conclusion of the radiometer intercomparison at WP
2024-05-01	47109	CR1000	Removed	Data Logger Met	Removed with the decommissioning of the site.
DO Sensor
2012-04-17	DO-05	DO6400/T	Installed	DO Sensor Upper	Installed on post northwest of scaffolding at west pilot pond. Not running because of forgotten power connector.
2012-04-17	DO-04	DO6400/T	Installed	DO Sensor Lower	Installed on post northwest of scaffolding at west pilot pond. Not running because of forgotten power connector.
2012-08-02	DO-04	DO6400/T	Serviced	DO Sensor Lower	DO-04 was serviced in the field due to unexpectedly low readings. The electrolyte was replaced.
2012-08-02	DO-05	DO6400/T	Serviced	DO Sensor Upper	DO-05 was serviced in the field due to unexpectedly low readings. The electrolyte was replaced.
2012-08-16	DO-04	DO6400/T	Serviced	DO Sensor Lower	DO-04 was serviced in the field due to continued unexpectedly low readings. The inside was rinsed with vinegar and scrubbed with a tooth brush. The electrolyte was replaced.
2012-08-16	DO-05	DO6400/T	Serviced	DO Sensor Upper	DO-05 was serviced in the field due to continued unexpectedly low readings. The inside was rinsed with vinegar and scrubbed with a tooth brush. The electrolyte was replaced.
2012-08-30	DO-04	DO6400/T	Removed	DO Sensor Lower	DO-04 was removed from the water at West Pond due to continued low readings. The sensor will be checked in the lab and reinstalled.
2012-08-30	DO-05	DO6400/T	Removed	DO Sensor Upper	DO-05 was removed from the water at West Pond due to continued low readings. The sensor will be checked in the lab and reinstalled.
2012-09-06	DO-04	DO6400/T	Installed	DO Sensor Lower	DO-04 was resintalled in the deeper location at West Pond. The lab check went fine and it has been decided that the low values are correct and that the water is just very oxygen poor.
2012-09-06	DO-05	DO6400/T	Installed	DO Sensor Upper	DO-05 was resintalled in the shallow location at West Pond. The lab check went fine and it has been decided that the low values are correct and that the water is just very oxygen poor.
2013-01-03	DO-04	DO6400/T	Moved	0	This sensor was moved from the upper location at West Pond to near the well at the Twitchell Rice. The sensor was left laying sideways on the bottom of the flooded field.
2014-09-25	1221	miniDOT	Installed	DO Sensor C	Installed at West Pond in a profile at 2cm above soil in water column.
2014-09-25	1219	miniDOT	Installed	DO Sensor B	Installed at West Pond in a profile at 7.5cm above soil in water column.
2014-09-25	1220	miniDOT	Installed	DO Sensor A	Installed at West Pond in a profile at 13cm above soil in water column.
2014-10-09	1219	miniDOT	Removed	DO Sensor B	Removed from West Pond for installation at Mayberry where a longer profile is possible.
2014-10-09	1220	miniDOT	Removed	DO Sensor A	Removed from West Pond for installation at Mayberry where a longer profile is possible.
2014-10-09	1221	miniDOT	Removed	DO Sensor C	Removed from West Pond for installation at Mayberry where a longer profile is possible.
2018-05-31	899502	miniDOT-usb	Installed	DO Sensor A	Installed at WP tower, tied with a string on the NW corner of the the scaffolding.
2020-01-07	899502	miniDOT-usb	Removed	DO Sensor A	Removed from WP and brought back to the lab because of low water levels.
2020-05-19	899502	miniDOT-usb	Installed	DO Sensor A	Installed on the east side of the tower, between the scaffolding and the wooden platform.
2020-07-21	899502	miniDOT-usb	Removed	none	Removed from WP tower and loaned to Ariane to bury underground in WP. There's not much water at the WP tower anyways, and Ariane is planning on draining it the following week.
2020-08-21	180871	miniDOT-usb	Installed	none	Installed at WP, hanging on a yellow plastic chain on the east side of the tower between the tower and the wooden deck. The sensor is currently in air.
2021-06-09	899502	miniDOT-usb	Removed		Removed from WP and brought back to the lab for data download. This sensor had been installed in the mud near 0.5 footprint
2024-01-11	180871	miniDOT-usb	Removed	DO Sensor A	Removed from WP with site decommissioning
2024-05-01	DO-05	DO6400/T	Removed	DO Sensor Upper	Removed with the decommissioning of the site. Has been non-functional for a long long time.
Gas Analyzer
2012-05-02	TG1-0223	LI-7700	Removed	Gas Analyzer CH4	Removed from the Sherman tower for use at West pond. Replaced by LGR (sn 08-114).
2012-05-02	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on folding boom at the top of the tower.
2012-08-29	75H-2176	LI-7500A	Calibration	Lab	Calibration Date:2012-08-29 Last calibration: 2012-01-27 AGC=44 SDM=6 DAC1= DAC2= Ambient P=100.32kPa Tair=26.67C, Tdew=13.58C Zero air at 1800psi, CO2 in air 398.9ppm 2000psi Tdewspan=15.08 CO2 zero 0.8691 -> 0.8694 Offset: 1.4ppm CO2 span 1.0076 -> 1.0152 Offset: -3.8ppm H2O zero 0.8509 -> 0.8534 Offset: 14.3mmol/m3 H2O span 0.9947 -> 0.9979 Offset: 0C Notes: This IRGA seemed to be reading low in the field but no major offset seen in calibration. First lab calibration since receiving this instrument.
2012-05-02	TG1-0223	LI-7700	Installed	Gas Analyzer CH4	Installed at West Pond on the folding boom at the top of the tower.
2012-08-23	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond Tower by Cove for calibration. Replaced by sn 2182.
2012-08-29	75H-2176	LI-7500A	Calibration	Lab	Calibration Date:2012-08-29 Last calibration: 2012-01-27 AGC=44 SDM=6 DAC1= DAC2= Ambient P=100.32kPa Tair=26.67C, Tdew=13.58C Zero air at 1800psi, CO2 in air 398.9ppm 2000psi Tdewspan=15.08 CO2 zero 0.8691 -> 0.8694 Offset: 1.4ppm CO2 span 1.0076 -> 1.0152 Offset: -3.8ppm H2O zero 0.8509 -> 0.8534 Offset: 14.3mmol/m3 H2O span 0.9947 -> 0.9979 Offset: 0C Notes: This IRGA seemed to be reading low in the field but no major offset seen in calibration. First lab calibration since receiving this instrument.
2012-08-23	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn 2176 for calibration.
2013-08-20	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2013-05-02 AGC=83.9 SDM=1 DAC1=na DAC2=na Ambient P=100.10kPa, Tair=23.58C, Tdew=15.58C Zero Air at 1700psi, God CO2 421.22 at 1600 Tdewspan=15.19 CO2 zero 0.8837 -> 0.8802 Offset: -16.20ppm CO2 span 1.0037 -> 0.9947 Offset: 3.47ppm H2O zero 0.8417 -> 0.8471 Offset: 34.9ppm H2O span 0.9978 -> 0.9854 Offset: 0.27ppm Notes: Last cal was don at the factory after upgrade. Large zero offsets.
2012-09-06	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: RSSI=69%, Optical RH=% Ambient P=kPa, Tair=C ultra zero air at 1900psi, ch4 in air 4.982 at 950 CH4 Zero Offset: 0.047ppm CH4 Span Offset: 0.010ppm Notes: Calibrated on the West Pond tower by Cove and Joe. Last cal is the original done at Licor.
2013-01-03	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond tower for calibration and to swap out the 7550 box (sn 0397) for repair of the condensation problem. Replaced by sn 0065 and AIU-0666.
2013-08-20	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2013-05-02 AGC=83.9 SDM=1 DAC1=na DAC2=na Ambient P=100.10kPa, Tair=23.58C, Tdew=15.58C Zero Air at 1700psi, God CO2 421.22 at 1600 Tdewspan=15.19 CO2 zero 0.8837 -> 0.8802 Offset: -16.20ppm CO2 span 1.0037 -> 0.9947 Offset: 3.47ppm H2O zero 0.8417 -> 0.8471 Offset: 34.9ppm H2O span 0.9978 -> 0.9854 Offset: 0.27ppm Notes: Last cal was don at the factory after upgrade. Large zero offsets.
2013-01-03	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower with AIU-0666 to swap out sn 2182 for calibration and AIU-0397 for repair of the condensation problem.
2013-05-08	0065	LI-7500A	Calibration	Lab	Last calibration: 2012-12-13 AGC=15.5 SDM=1 DAC1=none DAC2=none Ambient P=101.55kPa, Tair=23.16C, Tdew=10.26C Zero air at 1700psi, God bottle 421.22 at 1700 Tdewspan=15.03 CO2 zero 0.8901 -> 0.8904 Offset: 0.90ppm CO2 span 1.001 -> 1.0198 Offset: -10.07ppm H2O zero 0.7016 -> 0.7022 Offset: 4.2ppm H2O span 0.9935 -> 0.9726 Offset: 0.44ppm Notes: Secondary CO2 standard seemed low at 344.62. I rechecked it with the LI6262 and got even lower value about 337. I calibrated with the god bottle but the IGRA was still off about 10ppm. I double checked the secondary standard and it read 335 - okay.
2013-02-19	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2012-09-06 RSSI=66.8%, Optical RH=1.0% Ambient P=101.98kPa, Tair=10.8C Zero Air at 1800psi, 2nd CH4 in Air 4.982 at 1300 CH4 Zero Offset: 0.016ppm CH4 Span Offset: 0.006ppm Notes:
2013-04-26	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond tower for calibration. Replaced by sn2176
2013-05-08	0065	LI-7500A	Calibration	Lab	Last calibration: 2012-12-13 AGC=15.5 SDM=1 DAC1=none DAC2=none Ambient P=101.55kPa, Tair=23.16C, Tdew=10.26C Zero air at 1700psi, God bottle 421.22 at 1700 Tdewspan=15.03 CO2 zero 0.8901 -> 0.8904 Offset: 0.90ppm CO2 span 1.001 -> 1.0198 Offset: -10.07ppm H2O zero 0.7016 -> 0.7022 Offset: 4.2ppm H2O span 0.9935 -> 0.9726 Offset: 0.44ppm Notes: Secondary CO2 standard seemed low at 344.62. I rechecked it with the LI6262 and got even lower value about 337. I calibrated with the god bottle but the IGRA was still off about 10ppm. I double checked the secondary standard and it read 335 - okay.
2013-04-26	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn0065 for calibration
2013-08-27	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2013-05-02 AGC=87 SDM=1 DAC1=na DAC2=na Ambient P=99.84kPa, Tair=26.53C, Tdew=13.56C Zero Air at 1700psi, God CO2 421.22 at 1600 Tdewspan=15.18 CO2 zero 0.8676 -> 0.8685 Offset: 3.78ppm CO2 span 1.0038 -> 1.0099 Offset: -3.34ppm H2O zero 0.8539 -> 0.8539 Offset: 0.0ppm H2O span 0.9906 -> 1.0 Offset: -0.2ppm Notes:
2013-08-21	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2013-02-19 RSSI=78%, Optical RH=3% Ambient P=101.1kPa, Tair=21.8C Zero Air at 1700psi, CH4 in air 4.995 at 1300 CH4 Zero Offset: 0.01ppm CH4 Span Offset: 0.013ppm Notes:
2013-08-21	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond tower for calibration. Replaced with sn 2182
2013-08-27	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2013-05-02 AGC=87 SDM=1 DAC1=na DAC2=na Ambient P=99.84kPa, Tair=26.53C, Tdew=13.56C Zero Air at 1700psi, God CO2 421.22 at 1600 Tdewspan=15.18 CO2 zero 0.8676 -> 0.8685 Offset: 3.78ppm CO2 span 1.0038 -> 1.0099 Offset: -3.34ppm H2O zero 0.8539 -> 0.8539 Offset: 0.0ppm H2O span 0.9906 -> 1.0 Offset: -0.2ppm Notes:
2013-08-21	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn 2176 for calibration
2014-02-28	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2013-08-20 AGC=83.8 SDM=1 DAC1=- DAC2=- Ambient P=98.10kPa, Tair=19.40C, Tdew=9.95C Zero air at 1400psi, God CO2 421.22 at 1500 Tdewspan=15.17 CO2 zero 0.8802 -> 0.8815 Offset: 5.98ppm CO2 span 0.9947 -> 1.0064 Offset: -4.84ppm H2O zero 0.8471 -> 0.8476 Offset: 2.5ppm H2O span 0.9854 -> 0.9875 Offset: -0.05ppm Notes: Using box sn 0666. Before calibration upgraded firmware from v6.5.5 to v7.0.1 - FPGA v6.0.3 not needing update.
2013-12-19	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond Tower for calibration. Replaced by sn 75H-2150.
2014-02-28	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2013-08-20 AGC=83.8 SDM=1 DAC1=- DAC2=- Ambient P=98.10kPa, Tair=19.40C, Tdew=9.95C Zero air at 1400psi, God CO2 421.22 at 1500 Tdewspan=15.17 CO2 zero 0.8802 -> 0.8815 Offset: 5.98ppm CO2 span 0.9947 -> 1.0064 Offset: -4.84ppm H2O zero 0.8471 -> 0.8476 Offset: 2.5ppm H2O span 0.9854 -> 0.9875 Offset: -0.05ppm Notes: Using box sn 0666. Before calibration upgraded firmware from v6.5.5 to v7.0.1 - FPGA v6.0.3 not needing update.
2013-12-19	75H-2150	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond Tower to replace sn 75H-2182 for calibration.
2014-06-24	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2013-12-18 AGC=95.08 SDM=1 DAC1=- DAC2=- Ambient P=100.15kPa, Tair=21.78C, Tdew=11.81C Zero Air at 1200psi, God CO2 421.22 at 1500 Tdewspan=15.26 CO2 zero 0.9012 -> 0.9012 Offset: 0.07ppm CO2 span 1.0016 -> 1.0011 Offset: 0.28ppm H2O zero 0.8643 -> 0.8652 Offset: 5.8ppm H2O span 0.9987 -> 1.0087 Offset: -0.21ppm Notes:
2014-03-07	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2013-08-21 RSSI=73.8%, Optical RH=7% Ambient P=102.4kPa, Tair=20.7C Zero Air at 1600psi, 2nd CH4 4.995 at 1100 CH4 Zero Offset: 0.01ppm CH4 Span Offset: 0.001ppm Notes: Calibrated by Cove and Sara after firmware upgrade to v 1.0.21. Windy day. Windy day.
2014-04-03	75H-2150	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 0065.
2014-06-24	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2013-12-18 AGC=95.08 SDM=1 DAC1=- DAC2=- Ambient P=100.15kPa, Tair=21.78C, Tdew=11.81C Zero Air at 1200psi, God CO2 421.22 at 1500 Tdewspan=15.26 CO2 zero 0.9012 -> 0.9012 Offset: 0.07ppm CO2 span 1.0016 -> 1.0011 Offset: 0.28ppm H2O zero 0.8643 -> 0.8652 Offset: 5.8ppm H2O span 0.9987 -> 1.0087 Offset: -0.21ppm Notes:
2014-04-03	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn 74H-2150 from calibration.
2014-09-09	0065	LI-7500A	Calibration	Lab	Last calibration: 2014-04-02 AGC=73.73 SDM=1 DAC1=- DAC2=- Ambient P=100.35kPa, Tair=22.06C, Tdew=12.61C Zero Air at 1000psi, God CO2 421.22 at 1300 Tdewspan=15.25 CO2 zero 0.8899 -> 0.8899 Offset: 0.0ppm CO2 span 1.0062 -> 1.0070 Offset: -0.52ppm H2O zero 0.704 -> 0.7053 Offset: 8.6ppm H2O span 0.9932 -> 1.0101 Offset: -0.34ppm Notes:
2014-09-04	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed for calibration. Problems with the 7550 box sn AIU-0614 prevented installation of a new 7500.
2014-09-09	0065	LI-7500A	Calibration	Lab	Last calibration: 2014-04-02 AGC=73.73 SDM=1 DAC1=- DAC2=- Ambient P=100.35kPa, Tair=22.06C, Tdew=12.61C Zero Air at 1000psi, God CO2 421.22 at 1300 Tdewspan=15.25 CO2 zero 0.8899 -> 0.8899 Offset: 0.0ppm CO2 span 1.0062 -> 1.0070 Offset: -0.52ppm H2O zero 0.704 -> 0.7053 Offset: 8.6ppm H2O span 0.9932 -> 1.0101 Offset: -0.34ppm Notes:
2014-09-08	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower with 7550 sn AIU-0666. There was no 7550-7500A pair on the tower due to issues when we tried to swap the head on 9/4.
2015-04-20	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2014-09-02 AGC=98.0 SDM=1 DAC1=- DAC2=- Ambient P=99.87kPa, Tair=20.88C, Tdew=11.21C Zero Air at 850psi, God CO2 421.22 at 1100 Tdewspan=15.96 CO2 zero 0.9143 -> 0.9146 Offset: 1.39ppm CO2 span 1.0134 -> 1.0232 Offset: -5.12ppm H2O zero 0.8812 -> 0.8819 Offset: 4.6ppm H2O span 1.0193 -> 1.0154 Offset: 0.08ppm Notes: Pressure coefficients might not have been reset.
2014-09-10	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2014-03-07 RSSI=82%, Optical RH=12% Ambient P=100.88kPa, Tair=31.5C Zero Air at 1400psi, 2nd CH4 4.995 at 750 CH4 Zero Offset: 0.025ppm CH4 Span Offset: -0.085ppm Notes: Very hot day with no wind. Span offset a little large.
2015-01-20	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 75H-2182.
2015-04-20	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2014-09-02 AGC=98.0 SDM=1 DAC1=- DAC2=- Ambient P=99.87kPa, Tair=20.88C, Tdew=11.21C Zero Air at 850psi, God CO2 421.22 at 1100 Tdewspan=15.96 CO2 zero 0.9143 -> 0.9146 Offset: 1.39ppm CO2 span 1.0134 -> 1.0232 Offset: -5.12ppm H2O zero 0.8812 -> 0.8819 Offset: 4.6ppm H2O span 1.0193 -> 1.0154 Offset: 0.08ppm Notes: Pressure coefficients might not have been reset.
2015-01-20	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on West Pond to Replace sn 75H-2180 for calibration
2015-07-15	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2015-01-13 AGC=84.3 SDM=1 DAC1=- DAC2=- Ambient P=100.19kPa, Tair=22.31C, Tdew=15.05C Zero Air at 800psi, God CO2 421.22 at 850 Tdewspan=11.08 CO2 zero 0.8824 -> 0.8825 Offset: 0.43ppm CO2 span 1.0118 -> 1.0064 Offset: 2.88ppm H2O zero 0.8453 -> 0.8458 Offset: 2.9ppm H2O span 1.0078 -> 1.0016 Offset: 0.12ppm Notes:
2015-03-24	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2014-09-10 RSSI=80%, Optical RH=19% Ambient P=102.3kPa, Tair=20.8C Zero air at 1200psi, 2nd CH4 4.995 at 600 CH4 Zero Offset: -0.001ppm CH4 Span Offset: 0.08ppm Notes:
2015-05-07	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond tower for calibration. Replaced by sn 75H-2176
2015-07-15	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2015-01-13 AGC=84.3 SDM=1 DAC1=- DAC2=- Ambient P=100.19kPa, Tair=22.31C, Tdew=15.05C Zero Air at 800psi, God CO2 421.22 at 850 Tdewspan=11.08 CO2 zero 0.8824 -> 0.8825 Offset: 0.43ppm CO2 span 1.0118 -> 1.0064 Offset: 2.88ppm H2O zero 0.8453 -> 0.8458 Offset: 2.9ppm H2O span 1.0078 -> 1.0016 Offset: 0.12ppm Notes:
2015-05-07	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn 75H-2182 for calibration.
2015-10-28	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2015-05-05 AGC=90.65 SDM=6 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=21.39C, Tdew=14.08C Zero Air at 750psi, God CO2 421.22 at 800 Tdewspan=11.08 CO2 zero 0.8692 -> 0.8691 Offset: -0.61ppm CO2 span 1.0216 -> 1.0177 Offset: 2.1ppm H2O zero 0.8562 -> 0.8565 Offset: 1.5ppm H2O span 1.0239 -> 1.0086 Offset: 0.3ppm Notes:
2015-09-02	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond tower for calibration. Replaced by sn 75H-2180
2015-10-28	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2015-05-05 AGC=90.65 SDM=6 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=21.39C, Tdew=14.08C Zero Air at 750psi, God CO2 421.22 at 800 Tdewspan=11.08 CO2 zero 0.8692 -> 0.8691 Offset: -0.61ppm CO2 span 1.0216 -> 1.0177 Offset: 2.1ppm H2O zero 0.8562 -> 0.8565 Offset: 1.5ppm H2O span 1.0239 -> 1.0086 Offset: 0.3ppm Notes:
2015-09-02	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn 75H-2176 for calibration.
2016-02-09	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2015-08-25 AGC=99.2 SDM=6 DAC1=- DAC2=- Ambient P=100.61kPa, Tair=26.61C, Tdew=8.90C Zero Air at 700psi, God CO2 421.22 at 700 Tdewspan=11.08 CO2 zero 0.9145 -> 0.9145 Offset: -0.21ppm CO2 span 1.0275 -> 1.0203 Offset: 3.88ppm H2O zero 0.8865 -> 0.8847 Offset: -10.6ppm H2O span 1.0123 -> 1.0241 Offset: -0.22ppm Notes:
2015-09-30	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2015-03-24 RSSI=66.5%, Optical RH=25% Ambient P=101.3kPa, Tair=18.1C Zero Air at 1050psi, AMP CH4 1.9966 at 1500 CH4 Zero Offset: 0.013ppm CH4 Span Offset: -0.0066ppm Notes: light, sporadic rain - no wind
2015-12-08	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond tower for calibration. Replaced by sn 0065
2016-02-09	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2015-08-25 AGC=99.2 SDM=6 DAC1=- DAC2=- Ambient P=100.61kPa, Tair=26.61C, Tdew=8.90C Zero Air at 700psi, God CO2 421.22 at 700 Tdewspan=11.08 CO2 zero 0.9145 -> 0.9145 Offset: -0.21ppm CO2 span 1.0275 -> 1.0203 Offset: 3.88ppm H2O zero 0.8865 -> 0.8847 Offset: -10.6ppm H2O span 1.0123 -> 1.0241 Offset: -0.22ppm Notes:
2015-12-08	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn 75H-2180 for calibration.
2016-05-13	0065	LI-7500A	Calibration	Lab	Last calibration: 2015-12-07 AGC=74.96 SDM=- DAC1=- DAC2=- Ambient P=100.14kPa, Tair=20.14C, Tdew=8.2C Zero Air at 600psi, God CO2 421.22 at 500 Tdewspan=15.09 CO2 zero 0.89 -> 0.8898 Offset: -0.57ppm CO2 span 1.0164 -> 1.0149 Offset: 0.91ppm H2O zero 0.7097 -> 0.7086 Offset: -7.4ppm H2O span 1.0231 -> 1.0139 Offset: 0.19ppm Notes: Calibration from H2O performed at 15.09C dew point instead of 11.09 which has been used previously. Use 15.09 from now on for a larger calibrated H2O range.
2016-02-25	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the West Pond tower for calibration. Replaced by sn 1594.
2016-05-13	0065	LI-7500A	Calibration	Lab	Last calibration: 2015-12-07 AGC=74.96 SDM=- DAC1=- DAC2=- Ambient P=100.14kPa, Tair=20.14C, Tdew=8.2C Zero Air at 600psi, God CO2 421.22 at 500 Tdewspan=15.09 CO2 zero 0.89 -> 0.8898 Offset: -0.57ppm CO2 span 1.0164 -> 1.0149 Offset: 0.91ppm H2O zero 0.7097 -> 0.7086 Offset: -7.4ppm H2O span 1.0231 -> 1.0139 Offset: 0.19ppm Notes: Calibration from H2O performed at 15.09C dew point instead of 11.09 which has been used previously. Use 15.09 from now on for a larger calibrated H2O range.
2016-02-25	1594	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the West Pond tower to replace sn 0065 for calibration
2016-04-13	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2015-09-30 RSSI=84.2%, Optical RH=24% Ambient P=101.74kPa, Tair=22.97C Zero Air at 900psi, AMP CH4 1.9966 at 700 CH4 Zero Offset: 0.011ppm CH4 Span Offset: 0.001ppm Notes:
2016-06-06	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	removed from west pond for calibration, replaced by sn 75H-2176
2016-06-06	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	installed at west pond to replace sn 1594 for calibration.
2016-10-25	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2016-06-03 AGC=91.2 SDM=6 DAC1=- DAC2=- Ambient P=100.28kPa, Tair=20.11C, Tdew=12.3C Zero Air at 400psi, God CO2 421.22 at 450 Tdewspan=16.01 CO2 zero 0.8688 -> 0.8689 Offset: 0.22ppm CO2 span 1.0175 -> 1.0176 Offset: -0.12ppm H2O zero 0.8571 -> 0.8563 Offset: -4.9ppm H2O span 1.0281 -> 1.0134 Offset: 0.31ppm Notes:
2016-09-13	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed Li7500 from West Pond tower for calibration. Replaced by 75H-2150.
2016-10-25	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2016-06-03 AGC=91.2 SDM=6 DAC1=- DAC2=- Ambient P=100.28kPa, Tair=20.11C, Tdew=12.3C Zero Air at 400psi, God CO2 421.22 at 450 Tdewspan=16.01 CO2 zero 0.8688 -> 0.8689 Offset: 0.22ppm CO2 span 1.0175 -> 1.0176 Offset: -0.12ppm H2O zero 0.8571 -> 0.8563 Offset: -4.9ppm H2O span 1.0281 -> 1.0134 Offset: 0.31ppm Notes:
2016-09-13	75H-2150	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond after calibration. Replacing 75H-2176.
2017-03-14	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2016-09-12 AGC=98.7 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=27.5C, Tdew=10.12C Zero Air at 1700psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.9019 -> 0.9014 Offset: -2.03ppm CO2 span 1.0084 -> 1.0000 Offset: 4.31ppm H2O zero 0.8662 -> 0.8651 Offset: -6.8ppm H2O span 1.0155 -> 1.0094 Offset: 0.13ppm Notes:
2016-10-11	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: west pond Last calibration: 2016-04-13 RSSI=71%, Optical RH=27% Ambient P=101.3kPa, Tair=22C zero air at 700psi, AMP CH4 4.030 at 1200 CH4 Zero Offset: 0.001ppm CH4 Span Offset: -0.006ppm Notes: Breezy.
2016-12-21	75H-2150	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration in the lab. Replaced by 75H-2267
2017-03-14	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2016-09-12 AGC=98.7 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=27.5C, Tdew=10.12C Zero Air at 1700psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.9019 -> 0.9014 Offset: -2.03ppm CO2 span 1.0084 -> 1.0000 Offset: 4.31ppm H2O zero 0.8662 -> 0.8651 Offset: -6.8ppm H2O span 1.0155 -> 1.0094 Offset: 0.13ppm Notes:
2016-12-21	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond after calibration in the lab to replace 75H-2150
2017-03-21	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2016-12-19 AGC=106.9 SDM= DAC1= DAC2= Ambient P=99.8kPa, Tair=24.3C, Tdew=10.04C Zero Air at 1700psi, God CO2 421.22 at 350 Tdewspan=16.00 CO2 zero 0.9421 -> 0.9423 Offset: 0.60ppm CO2 span 1.0156 -> 1.0144 Offset: 0.43ppm H2O zero 0.8378 -> 0.8380 Offset: 1.3ppm H2O span 1.0214 -> 1.0219 Offset: -0.01ppm Notes:
2017-03-15	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond and returned to lab for calibration. It was replaced by 75H-2668.
2017-03-21	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2016-12-19 AGC=106.9 SDM= DAC1= DAC2= Ambient P=99.8kPa, Tair=24.3C, Tdew=10.04C Zero Air at 1700psi, God CO2 421.22 at 350 Tdewspan=16.00 CO2 zero 0.9421 -> 0.9423 Offset: 0.60ppm CO2 span 1.0156 -> 1.0144 Offset: 0.43ppm H2O zero 0.8378 -> 0.8380 Offset: 1.3ppm H2O span 1.0214 -> 1.0219 Offset: -0.01ppm Notes:
2017-03-15	75H-2668	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace 75H-2667.
2017-07-25	75H-2668	LI-7500A	Calibration	Lab	Last calibration: 2017-03-14 AGC=100.2 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=21.4C, Tdew=13.0C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9392 -> .9395 Offset: 1.41ppm CO2 span 1.0131 -> 1.0159 Offset: -1.5ppm H2O zero 0.9041 -> .9047 Offset: 3.2ppm H2O span 1.0063 -> 1.0107 Offset: -.10ppm Notes:
2017-03-23	TG1-0223	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2016-10-11 RSSI=86.2%, Optical RH=16% Ambient P=102.0kPa, Tair=17.6C Zero Air at 750psi, Ameriflux CH4 4.0304 at 1100 CH4 Zero Offset: -0.041ppm CH4 Span Offset: -0.0251ppm Notes: Changed dessicant and optics RH = 27%. Flushed head with span gas and optics RH dropped to 16%.
2017-06-23	75H-2668	LI-7500A	Adjusted	Gas Analyzer CO2/H2O	Slated to be removed for calibration but replacement 75H-0418 measured unreasonable H20 levels.
2017-07-25	75H-2668	LI-7500A	Calibration	Lab	Last calibration: 2017-03-14 AGC=100.2 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=21.4C, Tdew=13.0C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9392 -> .9395 Offset: 1.41ppm CO2 span 1.0131 -> 1.0159 Offset: -1.5ppm H2O zero 0.9041 -> .9047 Offset: 3.2ppm H2O span 1.0063 -> 1.0107 Offset: -.10ppm Notes:
2017-07-03	75H-2668	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by 75H-0418.
2017-07-25	75H-2668	LI-7500A	Calibration	Lab	Last calibration: 2017-03-14 AGC=100.2 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=21.4C, Tdew=13.0C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9392 -> .9395 Offset: 1.41ppm CO2 span 1.0131 -> 1.0159 Offset: -1.5ppm H2O zero 0.9041 -> .9047 Offset: 3.2ppm H2O span 1.0063 -> 1.0107 Offset: -.10ppm Notes:
2017-07-03	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace 75H-2668.
2017-11-27	0418	LI-7500A	Calibration	Lab	Last calibration: 2017-07-02 AGC=97.1 SDM=0 DAC1=0 DAC2=0 Ambient P=100.9kPa, Tair=22.8C, Tdew=6.8C Zero Air at 350psi, LBL Air 408.97 at 1750 Tdewspan=16.00 CO2 zero 0.8995 -> .8998 Offset: .87ppm CO2 span 1.0066 -> 1.006 Offset: .4ppm H2O zero 0.8436 -> .8437 Offset: .2ppm H2O span 0.9847 -> .9821 Offset: .05ppm Notes: Calibrated on 7550 software version 8.5.0
2017-10-13	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 75H-2150
2017-11-27	0418	LI-7500A	Calibration	Lab	Last calibration: 2017-07-02 AGC=97.1 SDM=0 DAC1=0 DAC2=0 Ambient P=100.9kPa, Tair=22.8C, Tdew=6.8C Zero Air at 350psi, LBL Air 408.97 at 1750 Tdewspan=16.00 CO2 zero 0.8995 -> .8998 Offset: .87ppm CO2 span 1.0066 -> 1.006 Offset: .4ppm H2O zero 0.8436 -> .8437 Offset: .2ppm H2O span 0.9847 -> .9821 Offset: .05ppm Notes: Calibrated on 7550 software version 8.5.0
2017-10-13	TG1-0223	LI-7700	Removed	Gas Analyzer CH4	Removed from West Pond for calibration. Replaced by sn TG1-0424
2017-10-13	75H-2150	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on West Pond to replace sn 0418 for calibration
2018-02-20	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2017-10-11 AGC=96.9 SDM=0 DAC1=0 DAC2=0 Ambient P=101.2kPa, Tair=24.4C, Tdew=0.15C Zero Air at 250psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9018 -> .902 Offset: .58ppm CO2 span 1.007 -> 1.007 Offset: .83ppm H2O zero 0.8649 -> .866 Offset: 7.1ppm H2O span 1.009 -> 1.009 Offset: 0ppm Notes: I didn't span the H2O because the sensor's dewpoint measurement decreased from 10 to 4.3 after 50 minutes. It didn't make sense for the H2O span to change that much. There might be an issue with the dewpoint generator.
2017-10-13	TG1-0424	LI-7700	Installed	Gas Analyzer CH4	Installed on West Pond to replace sn TG1-0223 for calibration
2018-01-16	75H-2150	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from WP and brought back to the lab for calibration. it was replaced by sn 75H-2180.
2018-02-20	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2017-10-11 AGC=96.9 SDM=0 DAC1=0 DAC2=0 Ambient P=101.2kPa, Tair=24.4C, Tdew=0.15C Zero Air at 250psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9018 -> .902 Offset: .58ppm CO2 span 1.007 -> 1.007 Offset: .83ppm H2O zero 0.8649 -> .866 Offset: 7.1ppm H2O span 1.009 -> 1.009 Offset: 0ppm Notes: I didn't span the H2O because the sensor's dewpoint measurement decreased from 10 to 4.3 after 50 minutes. It didn't make sense for the H2O span to change that much. There might be an issue with the dewpoint generator.
2018-01-16	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at WP to replace sn 75H-2150.
2018-06-25	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2018-01-10 AGC=100.3 SDM=0 DAC1=- DAC2=- Ambient P=100.5kPa, Tair=26.3C, Tdew=13.2C Zero Air at 300psi, AMP 408.97 at 1350 Tdewspan=15.99 CO2 zero 0.9147 -> 0.9141 Offset: -3.0ppm CO2 span 1.0362 -> 1.0267 Offset: 4.93ppm H2O zero 0.8864 -> 0.8865 Offset: 0.5ppm H2O span 1.0168 -> 1.0274 Offset: -0.21ppm Notes: Calibrated by Joe
2018-04-05	TG1-0424	LI-7700	Removed	Gas Analyzer CH4	Removed from WP and brought back to the lab for calibration. It was replaced by sn TG1-0224.
2018-04-05	TG1-0224	LI-7700	Installed	Gas Analyzer CH4	Installed at WP to replace sn TG1-0424, which was brought back to the lab for calibration.
2018-04-20	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from WP and brought back to the lab for calibration. It was replaced by sn 75H-2514.
2018-06-25	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2018-01-10 AGC=100.3 SDM=0 DAC1=- DAC2=- Ambient P=100.5kPa, Tair=26.3C, Tdew=13.2C Zero Air at 300psi, AMP 408.97 at 1350 Tdewspan=15.99 CO2 zero 0.9147 -> 0.9141 Offset: -3.0ppm CO2 span 1.0362 -> 1.0267 Offset: 4.93ppm H2O zero 0.8864 -> 0.8865 Offset: 0.5ppm H2O span 1.0168 -> 1.0274 Offset: -0.21ppm Notes: Calibrated by Joe
2018-04-20	75H-2514	LI-7500A	Installed	Gas Analyzer CO2/H2O	Replaced sn 75H-2180 at WP, which was brought back to the lab for calibration.
2018-09-26	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2018-04-18 AGC=100.1 SDM=0 DAC1=0 DAC2=0 Ambient P=100.3kPa, Tair=27.3C, Tdew=12.7C Zero Air at 1600psi, AMP Air 408.97 at 1200 Tdewspan=16.00 CO2 zero 0.906 -> .9045 Offset: -6.04ppm CO2 span 1.0106 -> 1.0036 Offset: 3.52ppm H2O zero 0.8368 -> .8370 Offset: 1.3ppm H2O span 1.016 -> 1.0165 Offset: -.01ppm Notes:
2018-07-12	75H-2514	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from WP and brought back to the lab for calibration. It was replaced by sn 0042.
2018-09-26	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2018-04-18 AGC=100.1 SDM=0 DAC1=0 DAC2=0 Ambient P=100.3kPa, Tair=27.3C, Tdew=12.7C Zero Air at 1600psi, AMP Air 408.97 at 1200 Tdewspan=16.00 CO2 zero 0.906 -> .9045 Offset: -6.04ppm CO2 span 1.0106 -> 1.0036 Offset: 3.52ppm H2O zero 0.8368 -> .8370 Offset: 1.3ppm H2O span 1.016 -> 1.0165 Offset: -.01ppm Notes:
2018-07-12	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at WP to replace sn 75H-2514, which was brought back to the lab for calibration.
2019-01-02	0042	LI-7500A	Calibration	Lab	Last calibration: 2018-07-10 AGC=98.7 SDM=0 DAC1=0 DAC2=0 Ambient P=101.3kPa, Tair=19.2C, Tdew=.7C Zero Air at 1400psi, AMP Air 408.97 at 875 Tdewspan=16.00 CO2 zero 0.9485 -> .9489 Offset: 1.45ppm CO2 span 1.0039 -> 1.0187 Offset: -7.39ppm H2O zero 0.8406 -> .8434 Offset: 18.2ppm H2O span 1.0158 -> 1.0334 Offset: -.37ppm Notes: Dewpoint generator was set at 16.03C and I adjusted it to 16.00 before beginning calibration. H2O zero offset larger than I expected, but H2O span seems fine.
2018-10-25	TG1-0224	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2018-04-04 RSSI=70%, Optical RH=22% Ambient P=101.7kPa, Tair=25.5C Zero Air at 1950psi, AMP Air 3.121 at 2100 CH4 Zero Offset: -.004ppm CH4 Span Offset: -.002ppm Notes: Calm day. Before calibrating, we flushed head spaced with zero air. Optics RH dried down from 22% to 13% before calibration started.
2018-10-25	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from WP and brought back to the lab for calibration. it was replaced by sn 75H-2182.
2019-01-02	0042	LI-7500A	Calibration	Lab	Last calibration: 2018-07-10 AGC=98.7 SDM=0 DAC1=0 DAC2=0 Ambient P=101.3kPa, Tair=19.2C, Tdew=.7C Zero Air at 1400psi, AMP Air 408.97 at 875 Tdewspan=16.00 CO2 zero 0.9485 -> .9489 Offset: 1.45ppm CO2 span 1.0039 -> 1.0187 Offset: -7.39ppm H2O zero 0.8406 -> .8434 Offset: 18.2ppm H2O span 1.0158 -> 1.0334 Offset: -.37ppm Notes: Dewpoint generator was set at 16.03C and I adjusted it to 16.00 before beginning calibration. H2O zero offset larger than I expected, but H2O span seems fine.
2018-10-25	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at WP to replace sn 0042, which was brought back to the lab for calibration.
2019-04-15	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2018-10-24 AGC=87.6 SDM=0 DAC1=- DAC2=- Ambient P=100.19kPa, Tair=26.94C, Tdew=7.42C Zero Air 369068 at 1100psi, AMP CA04396 408.97 at 750 Tdewspan=15.99 CO2 zero 0.8844 -> 0.8842 Offset: -1.10ppm CO2 span 1.0188 -> 1.0156 Offset: 0.08ppm H2O zero 0.8449 -> 0.8459 Offset: 6.3ppm H2O span 1.0143 -> 1.0189 Offset: -0.1ppm Notes: by Joe
2019-02-12	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from WP and brought back to the lab for calibration. It was replaced by 75H-2668.
2019-04-15	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2018-10-24 AGC=87.6 SDM=0 DAC1=- DAC2=- Ambient P=100.19kPa, Tair=26.94C, Tdew=7.42C Zero Air 369068 at 1100psi, AMP CA04396 408.97 at 750 Tdewspan=15.99 CO2 zero 0.8844 -> 0.8842 Offset: -1.10ppm CO2 span 1.0188 -> 1.0156 Offset: 0.08ppm H2O zero 0.8449 -> 0.8459 Offset: 6.3ppm H2O span 1.0143 -> 1.0189 Offset: -0.1ppm Notes: by Joe
2019-02-12	75H-2668	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at WP to replace 75H-2182, which was brought back to the lab for calibration.
2019-04-26	75H-2668	LI-7500A	Calibration	Lab	Last calibration: 2019-02-11 AGC=100.0 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=24.5C, Tdew=11.1C Zero Air at 1050psi, AMP CA4396 408.97 at 700 Tdewspan=16.00 CO2 zero 0.939 -> .9391 Offset: .22ppm CO2 span 0.018 -> 1.0169 Offset: .59ppm H2O zero 0.9073 -> .9069 Offset: -2.2ppm H2O span 1.0117 -> 1.0139 Offset: -.05ppm Notes:
2019-04-11	TG1-0224	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2018-10-25 RSSI=71%, Optical RH=24% Ambient P=101.8kPa, Tair=17.2C Zero Air M4002 at 1600psi, AMP CA03923 3.1210 at 1700 CH4 Zero Offset: -0.005ppm CH4 Span Offset: 0.008ppm Notes: Windy day. Optical RH high - needs new desiccant.
2019-04-25	TG1-0224	LI-7700	Upgrade	Gas Analyzer CH4	The LI-7700 firmware was upgraded from v1.0.21 to v1.0.27 mostly minor bug fixes see change log https://www.licor.com/env/support/LI-7700/topics/change-log.html
2019-04-25	75H-2668	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 0418
2019-04-26	75H-2668	LI-7500A	Calibration	Lab	Last calibration: 2019-02-11 AGC=100.0 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=24.5C, Tdew=11.1C Zero Air at 1050psi, AMP CA4396 408.97 at 700 Tdewspan=16.00 CO2 zero 0.939 -> .9391 Offset: .22ppm CO2 span 0.018 -> 1.0169 Offset: .59ppm H2O zero 0.9073 -> .9069 Offset: -2.2ppm H2O span 1.0117 -> 1.0139 Offset: -.05ppm Notes:
2019-04-25	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on West Pond to replace sn 75H-2668 for calibartion
2019-08-21	0418	LI-7500A	Calibration	Lab	Last calibration: 2019-04-22 AGC=93.7 SDM=0 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=26.98C, Tdew=14.83C Zero Air at 1000psi, AMP CO2 408.97 at 800 Tdewspan=20.0 CO2 zero 0.8992 -> 0.8990 Offset: -0.55ppm CO2 span 1.0011 -> 0.9976 Offset: 1.71ppm H2O zero 0.8464 -> 0.8466 Offset: -0.8ppm H2O span 0.9866 -> 0.9818 Offset: 0.11ppm Notes:
2019-08-07	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from WP and brought back to the lab for calibration. It was replaced by sn 75H-2182.
2019-08-21	0418	LI-7500A	Calibration	Lab	Last calibration: 2019-04-22 AGC=93.7 SDM=0 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=26.98C, Tdew=14.83C Zero Air at 1000psi, AMP CO2 408.97 at 800 Tdewspan=20.0 CO2 zero 0.8992 -> 0.8990 Offset: -0.55ppm CO2 span 1.0011 -> 0.9976 Offset: 1.71ppm H2O zero 0.8464 -> 0.8466 Offset: -0.8ppm H2O span 0.9866 -> 0.9818 Offset: 0.11ppm Notes:
2019-08-07	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at WP to replace sn 0418, which was brought back to the lab for calibration.
2019-11-18	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2019-08-01 AGC=100.0 SDM=0 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=27.5C, Tdew=9.64C Zero Air at 950psi, AMP CA04396 408.97 at 600 Tdewspan=20.0 CO2 zero 0.8846 -> 0.8846 Offset: -0.05ppm CO2 span 1.0226 -> 1.0217 Offset: 0.33ppm H2O zero 0.8456 -> 0.8462 Offset: 3.6ppm H2O span 1.0214 -> 1.0265 Offset: -0.1ppm Notes:
2019-10-22	TG1-0224	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2019-04-11 RSSI=72%, Optical RH=27% Ambient P=101.8kPa, Tair=27.2C Zero Air at 1300psi, AMP CA03923 3.121 at 1200 CH4 Zero Offset: 0.043ppm CH4 Span Offset: 0.000ppm Notes: Was stabilizing at 0.033 for zero but went up after adjusting gas flow. Optics desiccant swapped after calibration. Cal gas used to dry head space. New RH about 10%
2019-11-14	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond and brought back to the lab for calibration. Replaced by sn 75H-2667.
2019-11-18	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2019-08-01 AGC=100.0 SDM=0 DAC1=- DAC2=- Ambient P=100.3kPa, Tair=27.5C, Tdew=9.64C Zero Air at 950psi, AMP CA04396 408.97 at 600 Tdewspan=20.0 CO2 zero 0.8846 -> 0.8846 Offset: -0.05ppm CO2 span 1.0226 -> 1.0217 Offset: 0.33ppm H2O zero 0.8456 -> 0.8462 Offset: 3.6ppm H2O span 1.0214 -> 1.0265 Offset: -0.1ppm Notes:
2019-11-14	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 75H-2182 for calibration.
2020-05-13	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2019-11-12 AGC=102 SDM= DAC1= DAC2= Ambient P=100.7kPa, Tair=21.3C, Tdew=10.6C Zero Air at 725psi, AMP CA4396 408.97 at 500 Tdewspan=16.00 CO2 zero 0.9419 -> .9422 Offset: 1.29ppm CO2 span 1.019 -> 1.0196 Offset: -0.25ppm H2O zero 0.8384 -> 0.8380 Offset: -2.3ppm H2O span 1.0239 -> 1.0313 Offset: -0.15ppm Notes:
2020-02-20	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 0418.
2020-05-13	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2019-11-12 AGC=102 SDM= DAC1= DAC2= Ambient P=100.7kPa, Tair=21.3C, Tdew=10.6C Zero Air at 725psi, AMP CA4396 408.97 at 500 Tdewspan=16.00 CO2 zero 0.9419 -> .9422 Offset: 1.29ppm CO2 span 1.019 -> 1.0196 Offset: -0.25ppm H2O zero 0.8384 -> 0.8380 Offset: -2.3ppm H2O span 1.0239 -> 1.0313 Offset: -0.15ppm Notes:
2020-02-20	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 75H-2667 for calibration.
2020-05-20	0418	LI-7500A	Calibration	Lab	Last calibration: 2020-02-19 AGC=94.4 SDM=0 DAC1=- DAC2=- Ambient P=100.9kPa, Tair=21.0C, Tdew=10.0C Zero Air at 800psi, AMP CA04396 408.97 at 600 Tdewspan=16.0 CO2 zero 0.8994 -> 0.8992 Offset: -0.8ppm CO2 span 0.9987 -> 0.9991 Offset: -0.27ppm H2O zero 0.8456 -> 0.8462 Offset: 3.3ppm H2O span 0.9845 -> 0.9764 Offset: 0.2ppm Notes:
2020-05-19	TG1-0224	LI-7700	Calibration	Gas Analyzer CH4	Calibration Location: West Pond Last calibration: 2019-10-22 RSSI=71%, Optical RH=9% Ambient P=101.5kPa, Tair=21.5C Zero Air at 950psi, AMP CA3923 3.121 at 900 CH4 Zero Offset: -0.022ppm CH4 Span Offset: -0.003ppm Notes: Breezy day
2020-05-19	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond and brought back to the lab for calibration. Replaced by sn 0041.
2020-05-20	0418	LI-7500A	Calibration	Lab	Last calibration: 2020-02-19 AGC=94.4 SDM=0 DAC1=- DAC2=- Ambient P=100.9kPa, Tair=21.0C, Tdew=10.0C Zero Air at 800psi, AMP CA04396 408.97 at 600 Tdewspan=16.0 CO2 zero 0.8994 -> 0.8992 Offset: -0.8ppm CO2 span 0.9987 -> 0.9991 Offset: -0.27ppm H2O zero 0.8456 -> 0.8462 Offset: 3.3ppm H2O span 0.9845 -> 0.9764 Offset: 0.2ppm Notes:
2020-05-19	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 0418 for calibration.
2020-08-25	0041	LI-7500A	Calibration	Lab	Last calibration: 2020-05-13 AGC=100.5 SDM=0 DAC1=- DAC2=- Ambient P=100.2kPa, Tair=23.1C, Tdew=14.1C Zero Air at 700psi, AMP CA04396 408.97 at 500 Tdewspan=20.0 CO2 zero 0.9966 -> 0.9964 Offset: -0.7ppm CO2 span 1.018 -> 1.0173 Offset: 0.43ppm H2O zero 0.821 -> 0.8216 Offset: 3.3ppm H2O span 1.0256 -> 1.0323 Offset: -0.05ppm Notes:
2020-08-21	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 75H-2150.
2020-08-25	0041	LI-7500A	Calibration	Lab	Last calibration: 2020-05-13 AGC=100.5 SDM=0 DAC1=- DAC2=- Ambient P=100.2kPa, Tair=23.1C, Tdew=14.1C Zero Air at 700psi, AMP CA04396 408.97 at 500 Tdewspan=20.0 CO2 zero 0.9966 -> 0.9964 Offset: -0.7ppm CO2 span 1.018 -> 1.0173 Offset: 0.43ppm H2O zero 0.821 -> 0.8216 Offset: 3.3ppm H2O span 1.0256 -> 1.0323 Offset: -0.05ppm Notes:
2020-08-21	75H-2150	LI-7500A	Installed	Gas Analyzer CH4	Installed at West Pond to replace sn 0041 for calibration.
2021-03-01	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2020-08-20 AGC=100.8 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=27.4C, Tdew=2.08C Zero Air at 500psi, AMP CA04396 408.97 at 250 Tdewspan=20.0 CO2 zero 0.9019 -> 0.9019 Offset: -0.3ppm CO2 span 1.0014 -> 0.9975 Offset: 1.93ppm H2O zero 0.8665 -> 0.8675 Offset: 6.8ppm H2O span 1.011 -> 1.0040 Offset: 0.15ppm Notes: Flow rates were larger than usual - 2lpm instead of 2cfpm.
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	TG1-0421	LI-7700	Calibration		Calibration Location: West Pond Last calibration: 2020-05-19 RSSI=80%, Optical RH=8% Ambient P=102.0kPa, Tair=17.0C Zero Air at 500psi, AMP CA3923 3.121 at 500 CH4 Zero Offset: 0.005ppm CH4 Span Offset: 0.002ppm Notes: Still day. This sensor was originally at BA before we moved it to WP to calibrate. The sensor usually at WP (sn TG1-0224) was removed and brought back to the lab because its serial number was not recognized in the 7700 or 7550 software.
2020-11-19	TG1-0224	LI-7700	Removed	Gas Analyzer CH4	Removed from West Pond for calibration. Replaced by sn TG1-0421. It was brought back to the lab because its name was "Unknown" in both the 7550 and 7700 software instead of the usual serial number.
2020-12-03	75H-2150	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 0042.
2021-03-01	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2020-08-20 AGC=100.8 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=27.4C, Tdew=2.08C Zero Air at 500psi, AMP CA04396 408.97 at 250 Tdewspan=20.0 CO2 zero 0.9019 -> 0.9019 Offset: -0.3ppm CO2 span 1.0014 -> 0.9975 Offset: 1.93ppm H2O zero 0.8665 -> 0.8675 Offset: 6.8ppm H2O span 1.011 -> 1.0040 Offset: 0.15ppm Notes: Flow rates were larger than usual - 2lpm instead of 2cfpm.
2020-12-03	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 75H-2150 for calibration.
2021-05-25	0042	LI-7500A	Calibration	Lab	Last calibration: 2020-12-02 AGC=99.5 SDM=0 DAC1=- DAC2=- Ambient P=100.7kPa, Tair=26.2C, Tdew=10.8C Zero Air at 350psi, AMP CA03923 474.19 at 500 Tdewspan=20.0 CO2 zero 0.9482 -> 0.9481 Offset: -0.4ppm CO2 span 1.0111 -> 1.0041 Offset: 4.31ppm H2O zero 0.8436 -> 0.8437 Offset: 0.7ppm H2O span 1.0264 -> 1.0149 Offset: 0.3ppm Notes:
2021-03-16	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration and brought back to the lab. Replaced by sn 0073.
2021-05-25	0042	LI-7500A	Calibration	Lab	Last calibration: 2020-12-02 AGC=99.5 SDM=0 DAC1=- DAC2=- Ambient P=100.7kPa, Tair=26.2C, Tdew=10.8C Zero Air at 350psi, AMP CA03923 474.19 at 500 Tdewspan=20.0 CO2 zero 0.9482 -> 0.9481 Offset: -0.4ppm CO2 span 1.0111 -> 1.0041 Offset: 4.31ppm H2O zero 0.8436 -> 0.8437 Offset: 0.7ppm H2O span 1.0264 -> 1.0149 Offset: 0.3ppm Notes:
2021-03-16	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 0042 for calibration.
2021-06-01	0073	LI-7500A	Calibration	Lab	Last calibration: 2021-03-15 AGC=99.0 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=22.0C, Tdew=10.9C Zero Air at 300psi, AMP CA04119 524.77 at 1800 Tdewspan=16.0 CO2 zero 0.957 -> 0.9568 Offset: -0.6ppm CO2 span 1.0077 -> 1.0071 Offset: 0.43ppm H2O zero 0.7324 -> 0.7324 Offset: 2.2ppm H2O span 1.0024 -> 1.0037 Offset: -0.03ppm Notes: I started to calibrate this IRGA and I thought the signals looked noisy. At first I thought it might be a problem the the zero air flow rate and upped that a bit but no change. Then I calibrated sn 0418 and it seemed normal. I did a full calibration and while the numbers are pretty much right on all CO2, H2O zero and span were more noisy than usual. Don't deploy this one until some further checking is done.
2021-05-26	TG1-0421	LI-7700	Calibration		Calibration Location: West Pond Last calibration: 2020-11-19 RSSI=80%, Optical RH=12% Ambient P=101.2kPa, Tair=29.1C AMP FB04161 at 800psi, AMP CA04119 4.223 at 2100 CH4 Zero Offset: -0.024ppm CH4 Span Offset: 0.043ppm Notes: Relatively still day. Zero gas was an AMP cal gas in a baby tank that we borrowed for the day. Zero offset and span are a bit higher than I usually see on 7700s. A lot of bounce in concentrations from Dennis and Robert talking and wiggling the upper boardwalk.
2021-05-26	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 75H-2182.
2021-06-01	0073	LI-7500A	Calibration	Lab	Last calibration: 2021-03-15 AGC=99.0 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=22.0C, Tdew=10.9C Zero Air at 300psi, AMP CA04119 524.77 at 1800 Tdewspan=16.0 CO2 zero 0.957 -> 0.9568 Offset: -0.6ppm CO2 span 1.0077 -> 1.0071 Offset: 0.43ppm H2O zero 0.7324 -> 0.7324 Offset: 2.2ppm H2O span 1.0024 -> 1.0037 Offset: -0.03ppm Notes: I started to calibrate this IRGA and I thought the signals looked noisy. At first I thought it might be a problem the the zero air flow rate and upped that a bit but no change. Then I calibrated sn 0418 and it seemed normal. I did a full calibration and while the numbers are pretty much right on all CO2, H2O zero and span were more noisy than usual. Don't deploy this one until some further checking is done.
2021-05-26	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 0073 for calibration.
2021-11-30	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2021-05-25 AGC=100.0 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=27.1C, Tdew=12.5C Zero Air at 1400psi, AMP CA04119 524.77 at 1700 Tdewspan=20.0 CO2 zero 0.8846 -> 0.8850 Offset: 1.7ppm CO2 span 1.0217 -> 1.0219 Offset: -0.07ppm H2O zero 0.8464 -> 0.8470 Offset: 4.0ppm H2O span 1.024 -> 1.0264 Offset: -0.06ppm Notes:
2021-10-07	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 75H-2150.
2021-11-30	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2021-05-25 AGC=100.0 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=27.1C, Tdew=12.5C Zero Air at 1400psi, AMP CA04119 524.77 at 1700 Tdewspan=20.0 CO2 zero 0.8846 -> 0.8850 Offset: 1.7ppm CO2 span 1.0217 -> 1.0219 Offset: -0.07ppm H2O zero 0.8464 -> 0.8470 Offset: 4.0ppm H2O span 1.024 -> 1.0264 Offset: -0.06ppm Notes:
2021-10-07	75H-2150	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 75H-2182 for calibration.
2022-03-02	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2021-09-29 AGC=100 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=25.9C, Tdew=10.4C Zero Air at 975psi, AMP CA04119 524.77 at 1600 Tdewspan=20.00 CO2 zero 0.9018 -> .9016 Offset: -.7ppm CO2 span 1.0034 -> 1.0075 Offset: -2.79ppm H2O zero 0.8689 -> .8707 Offset: 12.7ppm H2O span 1.0112 -> 1.0158 Offset: -.1ppm Notes: First calibration after changing the air pump diaphragm on the dewpoint generator. The H2O span looked stable after 12-15 minutes, but I waited for 30+ min to be sure.
2021-11-30	TG1-0421	LI-7700	Calibration		Calibration Location: West Pond Last calibration: 2021-06-01 RSSI=87%, Optical RH=18% Ambient P=101.4kPa, Tair=18.6C Zero Air at 100psi, AMP CA04396 1.9317 at 1750 CH4 Zero Offset: .050ppm CH4 Span Offset: .0023ppm Notes: Relatively still day. The zero air tank pressure may have been >100psi, but the regulator was wonky. Zero was stable for 2min after applying zero.
2022-01-20	75H-2150	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 0035.
2022-03-02	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2021-09-29 AGC=100 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=25.9C, Tdew=10.4C Zero Air at 975psi, AMP CA04119 524.77 at 1600 Tdewspan=20.00 CO2 zero 0.9018 -> .9016 Offset: -.7ppm CO2 span 1.0034 -> 1.0075 Offset: -2.79ppm H2O zero 0.8689 -> .8707 Offset: 12.7ppm H2O span 1.0112 -> 1.0158 Offset: -.1ppm Notes: First calibration after changing the air pump diaphragm on the dewpoint generator. The H2O span looked stable after 12-15 minutes, but I waited for 30+ min to be sure.
2022-01-20	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 75H-2150 for calibration.
2022-04-19	0035	LI-7500A	Calibration	Lab	Last calibration: 2022-01-11 AGC=99.4 SDM= DAC1= DAC2= Ambient P=100.7kPa, Tair=25.4C, Tdew=8.2C Zero Air at 650psi, AMP CA04119 524.77 at 1600 Tdewspan=20.00 CO2 zero 0.9372 -> .9372 Offset: -.09ppm CO2 span 1.0128 -> 1.0167 Offset: -2.67ppm H2O zero 0.8986 -> .8983 Offset: -2.2ppm H2O span 1.0282 -> 1.0310 Offset: -.06ppm Notes:
2022-04-13	TG1-0421	LI-7700	Removed	Gas Analyzer CH4	Removed from West Pond and brought back to the lab. I couldn't connect to this sensor. The power LED light was blinking intermittently. Ethernet and Status LEDs were off. I removed the power cable as well since there was a crack in the plastic cable collar at the sensor. The wash power, wash tubing, and Ethernet cable are still there.
2022-04-13	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration and brought back to the lab. Replaced by sn 0073.
2022-04-19	0035	LI-7500A	Calibration	Lab	Last calibration: 2022-01-11 AGC=99.4 SDM= DAC1= DAC2= Ambient P=100.7kPa, Tair=25.4C, Tdew=8.2C Zero Air at 650psi, AMP CA04119 524.77 at 1600 Tdewspan=20.00 CO2 zero 0.9372 -> .9372 Offset: -.09ppm CO2 span 1.0128 -> 1.0167 Offset: -2.67ppm H2O zero 0.8986 -> .8983 Offset: -2.2ppm H2O span 1.0282 -> 1.0310 Offset: -.06ppm Notes:
2022-04-13	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 0035 for calibration.
2022-11-15	0073	LI-7500A	Calibration	Lab	Last calibration: 2022-04-08 AGC=101.2 SDM= DAC1= DAC2= Ambient P=101.2kPa, Tair=23.2C, Tdew=1.69C Zero Air at 1850psi, AMP CA04119 524.77 at 1350 Tdewspan=20.00 CO2 zero 0.9163 -> .9165 Offset: .68ppm CO2 span 0.9983 -> 1.0085 Offset: -7.22ppm H2O zero 0.8246 -> .8296 Offset: 28.9ppm H2O span 1.0147 -> 1.0258 Offset: -.25ppm Notes: Used AMP LI-7550 sn AIU-1039
2022-04-20	TG1-0155	LI-7700	Installed	Gas Analyzer CH4	Installed at WP to replace TG1-0421, which was removed last week for power issues.
2022-06-09	TG1-0155	LI-7700	Calibration		Calibration Location: West Pond Last calibration: 2021-12-06 RSSI=90%, Optical RH=3% Ambient P=101.1kPa, Tair=30.1C Zero Air at 400psi, AMP CA04119 4.2238 at 1550 CH4 Zero Offset: .016ppm CH4 Span Offset: .0028ppm Notes: Hot but relatively still at this site
2022-09-15	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 0035.
2022-11-15	0073	LI-7500A	Calibration	Lab	Last calibration: 2022-04-08 AGC=101.2 SDM= DAC1= DAC2= Ambient P=101.2kPa, Tair=23.2C, Tdew=1.69C Zero Air at 1850psi, AMP CA04119 524.77 at 1350 Tdewspan=20.00 CO2 zero 0.9163 -> .9165 Offset: .68ppm CO2 span 0.9983 -> 1.0085 Offset: -7.22ppm H2O zero 0.8246 -> .8296 Offset: 28.9ppm H2O span 1.0147 -> 1.0258 Offset: -.25ppm Notes: Used AMP LI-7550 sn AIU-1039
2022-09-15	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 0073 for calibration.
2023-01-13	0035	LI-7500A	Calibration	Lab	Last calibration: 2022-08-25 AGC=99.4 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=18.8C, Tdew=11.5C Zero Air at 1625psi, AMP CA04119 524.77 at 1275 Tdewspan=16.00 CO2 zero 0.9374 -> .9374 Offset: .2ppm CO2 span 1.0234 -> 1.0295 Offset: -3.97ppm H2O zero 0.8995 -> .9003 Offset: 4.9ppm H2O span 1.0334 -> 1.0369 Offset: -.06ppm Notes: Setting the CO2 span to 524.77ppm seemed to force the value to ~524.85 instead of 524.77. I think it's ok for now but something to keep an eye on. H2O value was not stabilizing when dewpt generator was set to 20.00C, probably because the room's dewpt<20.00C. I set the span point to 16.00C instead, which worked well.
2023-01-06	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 0065.
2023-01-13	0035	LI-7500A	Calibration	Lab	Last calibration: 2022-08-25 AGC=99.4 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=18.8C, Tdew=11.5C Zero Air at 1625psi, AMP CA04119 524.77 at 1275 Tdewspan=16.00 CO2 zero 0.9374 -> .9374 Offset: .2ppm CO2 span 1.0234 -> 1.0295 Offset: -3.97ppm H2O zero 0.8995 -> .9003 Offset: 4.9ppm H2O span 1.0334 -> 1.0369 Offset: -.06ppm Notes: Setting the CO2 span to 524.77ppm seemed to force the value to ~524.85 instead of 524.77. I think it's ok for now but something to keep an eye on. H2O value was not stabilizing when dewpt generator was set to 20.00C, probably because the room's dewpt<20.00C. I set the span point to 16.00C instead, which worked well.
2023-01-06	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 0035 for calibration.
2023-04-10	0065	LI-7500A	Calibration	Lab	Last calibration: 2023-01-04 AGC=102 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=23.7C, Tdew=10.5C Zero Air at 1300psi, AMP CA04119 524.77 at 1150 Tdewspan=16.00 CO2 zero 0.8915 -> .8918 Offset: 1.72ppm CO2 span 1.0227 -> 1.0217 Offset: .83ppm H2O zero 0.7323 -> .7295 Offset: -20.4ppm H2O span 1.0226 -> 1.0128 Offset: .21ppm Notes:
2023-01-18	TG1-0155	LI-7700	Calibration		Calibration Location: West Pond Last calibration: 2022-06-09 RSSI=81%, Optical RH=10% Ambient P=101.9kPa, Tair=12.3C Zero Air at 1500psi, AMP CA04396 1.9317 at 1125 CH4 Zero Offset: .008ppm CH4 Span Offset: .0103ppm Notes: Since optics RH = 10%, I did not change desiccant or flush headspace after calibration.
2023-04-03	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 75H-2180.
2023-04-10	0065	LI-7500A	Calibration	Lab	Last calibration: 2023-01-04 AGC=102 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=23.7C, Tdew=10.5C Zero Air at 1300psi, AMP CA04119 524.77 at 1150 Tdewspan=16.00 CO2 zero 0.8915 -> .8918 Offset: 1.72ppm CO2 span 1.0227 -> 1.0217 Offset: .83ppm H2O zero 0.7323 -> .7295 Offset: -20.4ppm H2O span 1.0226 -> 1.0128 Offset: .21ppm Notes:
2023-04-03	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 0065 for calibration.
2023-07-19	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2023-03-29 AGC=100.5 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.5kPa, Tair=23.4C, Tdew=13.1C Zero Air at 1000psi, AMP CA04119 524.77 at 950 Tdewspan=16.00 CO2 zero 0.9149 -> .9143 Offset: -2.92ppm CO2 span 1.044 -> 1.0374 Offset: 4.45ppm H2O zero 0.8913 -> .8941 Offset: 17.6ppm H2O span 1.0275 -> 1.0299 Offset: -.04ppm Notes: Slightly higher H2O zero offset than usual. Used CO2 span point of "524.55" to get the sensor to 524.77. Vertical orientation.
2023-06-15	TG1-0155	LI-7700	Calibration		Calibration Location: West Pond Last calibration: 2023-01-18 RSSI=89%, Optical RH=13% Ambient P=101.0kPa, Tair=26.2C Zero Air at 1100psi, AMP CA04119 4.2238 at 1050 CH4 Zero Offset: 0ppm CH4 Span Offset: -.0088ppm Notes: Zero was right on! Since the optics RH=13% which is pretty good, we did not flush its headspace or change its desiccant. The heater and cleaning settings were set to the default (maybe because of recent power outages). I updated both to what I remember to be our usual settings.
2023-07-11	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond for calibration. Replaced by sn 75H-2514.
2023-07-19	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2023-03-29 AGC=100.5 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.5kPa, Tair=23.4C, Tdew=13.1C Zero Air at 1000psi, AMP CA04119 524.77 at 950 Tdewspan=16.00 CO2 zero 0.9149 -> .9143 Offset: -2.92ppm CO2 span 1.044 -> 1.0374 Offset: 4.45ppm H2O zero 0.8913 -> .8941 Offset: 17.6ppm H2O span 1.0275 -> 1.0299 Offset: -.04ppm Notes: Slightly higher H2O zero offset than usual. Used CO2 span point of "524.55" to get the sensor to 524.77. Vertical orientation.
2023-07-11	75H-2514	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 75H-2180 for calibration.
2023-11-13	75H-2514	LI-7500A	Calibration	Factory	Calibrated at Licor after chopper motor replacement - see RMA doc: rma_Licor_00248550_sn75H-2514_20231201.pdf. The new calibration numbers (see cal doc: cal_Licor_LI-7500A_sn75H-2514_20231113.pdf) will need to be manually entered in 7550 configuration file.
2023-10-04	75H-2514	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from West Pond because of PLL error; CO2 and H2O were both 0. Not sure if this is because of sensor age or because of daily power cycles from a failing solar power system. Replaced by sn 1594.
2023-11-13	75H-2514	LI-7500A	Calibration	Factory	Calibrated at Licor after chopper motor replacement - see RMA doc: rma_Licor_00248550_sn75H-2514_20231201.pdf. The new calibration numbers (see cal doc: cal_Licor_LI-7500A_sn75H-2514_20231113.pdf) will need to be manually entered in 7550 configuration file.
2023-10-04	1594	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at West Pond to replace sn 75H-2514, which needs to go back to the factory for RMA (PLL error, CO2 and H2O were both 0).
2024-01-04	TG1-0155	LI-7700	Removed	Gas Analyzer CH4	Removed from WP tower with initial decommissioning of the site
2024-01-04	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from WP tower with initial decommissioning of the site
Interface
2012-04-17	3586	A547	Installed	Interface A547	Installed in box at west pilot pond. Not running because of forgotten power connector.
2012-05-02	AIU-0650	LI-7550	Installed	Interface LI-7550	Installed on the West Pond tower at mid-level on the scaffolding.
2012-10-08	AIU-0650	LI-7550	Removed	Interface LI-7550	Removed from West Pond to be returned to Licor for repair of condensation probelm. This unit had not failed yet. Replaced by sn 0397.
2012-10-18	6761	NL115	Installed	Interface NL115 ATI	Installed at West Pond with the ATI sonic for a three week inter-comparison
2012-11-08	6761	NL115	Removed	Interface NL115 ATI	Removed from West Pond with the ATI sonic after a three week inter-comparison
2012-11-08	AIU-0397	LI-7550	Installed	Interface LI-7550	Installed on the West Pond tower to swap out AIU-650 for repair of the condensation problem.
2013-01-03	AIU-0397	LI-7550	Removed	Interface LI-7550	Removed from the West Pond tower for repair of the condesation problem. Replaced by AIU-0666. Heads swapped for calibration at the same time.
2013-01-03	AIU-0666	LI-7550	Installed	Interface LI-7550	Installed on the West Pond tower with head 0065 to replace AIU-0397 for repair of condensation problem.
2013-08-21	AIU-0666	LI-7550	Removed	Interface LI-7550	Removed from the West Pond tower. This box has been suffer an ant infestation for many weeks. It was removed to be de-ant-ified, cleaned up and tested in the lab.
2013-08-21	AIU-0614	LI-7550	Installed	Interface LI-7550	Installed on the West Pond tower to replace sn 0666 for clean up. This box was placed on the top level of the scaffolding to hopefully avoid the ants.
2013-11-21	AIU-0614	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.
2014-09-04	AIU-0614	LI-7550	Removed	Interface LI-7550	Removed from the West Pond tower. In trying to swap the head, this box went into a reboot loop and we could not get it to complete a boot. This box also needs its connector circuit board upgraded to prevent condensation problems.
2014-09-08	AIU-0666	LI-7550	Installed	Interface LI-7550	Installed on the West Pond tower with head sn 75H-2180. There was now 7550-7500A pair on the tower because of issues with swapping the head on 9/4. This box has a new door gasket.
2014-10-02	AIU-0666	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.
2016-04-13	AIU-0666	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
2018-01-16	AIU-0666	LI-7550	Upgrade	Interface LI-7550	Downgraded embedded Licor software from v8.7.5 to 8.5.0 because 8.7.5 caused mismatch problems between data columns and headers
2018-01-31	AIU-0666	LI-7550	Removed	Interface LI-7550	Brought back to the lab for some TLC. It was replaced by AIU-1570.
2018-01-31	AIU-1570	LI-7550	Installed	Interface LI-7550	Installed at WP to replace AIU-0666 that was removed to fix door gasket, pressure port, circuit board cover.
2021-01-17	AIU-1570	LI-7550	Upgrade	Interface LI-7550	Upgraded embedded software from v8.5.0 to v8.8.32 in hopes this will solve the persistent 7700 sync issue
2024-02-12	3586	A547	Removed	Interface A547	Removed from WP with conductivity sensor sn 6096 and brought back to the lab. Nothing wrong with the data (probably), I just wanted an extra sensor in the lab to play around with TempCoef.
2024-02-28	AIU-1570	LI-7550	Removed	Interface LI-7550	Removed from WP as part of its decomissioning
Multiplexer
2012-04-17	6768	AM25T	Installed	Multiplexer Thermocouples	Installed in box at west pilot pond. Not running because of forgotten power connector.
2012-04-17	11661	AM16/32B	Installed	Multiplexer Met	Installed in box at west pilot pond. Not running because of forgotten power connector.
2024-05-01	6768	AM25T	Removed	Multiplexer Thermocouples	Removed with the decommissioning of the site.
2024-05-01	11661	AM16/32B	Removed	Multiplexer Met	Removed with the decommissioning of the site.
Narrow Band
2017-06-05	1066703780	SRS-Ni NDVI	Installed	Narrow Band NDVI Incoming	Installed in incoming position at West Pond.
2017-06-05	2046503378	SRS-Ni NDVI	Installed	Narrow Band NDVI Reflected	Installed at WP as NDVI reflected.
2024-05-01	1066703780	SRS-Ni NDVI	Removed	Narrow Band NDVI Incoming	Removed with the decommissioning of the site.
2024-05-01	2046503378	SRS-Ni NDVI	Removed	Narrow Band NDVI Reflected	Removed with the decommissioning of the site.
Net Radiometer
2012-04-17	1457	NR01	Installed	Net Radiometer	Installed at top of scaffolding at west pilot pond. Not running because of forgotten power connector.
2021-06-22	121038	CNR4	Moved	none	Moved from HS to WP as part of the radiometer calibration kit at the conclusion of the 2-week intercomparison at HS.
2021-07-21	121038	CNR4	Moved		Moved from West Pond to East End at the conclusion of the radiometer intercomparison at WP
2024-05-01	1457	NR01	Removed	Net Radiometer	Removed with the decommissioning of the site.
PAR Sensor
2012-04-17	110336	PQS 1	Installed	PAR Sensor Reflected	Installed at top of scaffolding at west pilot pond. Not running because of forgotten power connector. This sensor is pointing down and measuring PARout.
2012-04-17	110341	PQS 1	Installed	PAR Sensor Incoming	Installed at top of scaffolding at west pilot pond. Not running because of forgotten power connector. This sensor is pointing up and measuring PARin.
2024-05-01	110341	PQS 1	Removed	PAR Sensor Incoming	Removed with the decommissioning of the site.
2024-05-01	110336	PQS 1	Removed	PAR Sensor Reflected	Removed with the decommissioning of the site.
RH & Temp
2012-04-17	G4540025	HMP60	Installed	RH & Temp	Installed at top of scaffolding at west pilot pond. Not running because of forgotten power connector.
2017-12-18	G4540025	HMP60	Removed	RH & Temp	Removed from West Pond for 24hour side-by-side comparison at Twitchell Alfalfa
2017-12-19	G4540025	HMP60	Removed	RH & Temp	Removed from the HMP inter-comparison at Twitchell Alfalfa and returned to West Pond
2021-01-17	R0360206	HMP155	Moved	RH & Temp	Moved from Comparison Set to tower to replace sn G4540025 which had high RH readings.
2021-01-17	G4540025	HMP60	Removed	RH & Temp	Removed from WP and brought back to the lab b/c RH was railing high. It was replaced by HMP155 from the Comparison Set, sn R0360206.
2022-03-01	R0360206	HMP155	Removed	RH & Temp	Removed from WP and brought back to the lab for further inspection. RH seemed ok but AirT was consistently NAN. It was replaced by HMP155 sn T2820183 the following week.
2022-03-10	T2820183	HMP155	Installed	RH & Temp	Installed at West Pond to replace the malfunctioning one removed last week. Broken mounting screw and typo in the data logger program - messy troubleshooting ensued.
2024-05-01	T2820183	HMP155	Removed	RH & Temp	Removed with the decommissioning of the site.
Solar Controller
2012-05-02	11400077	PS-30M	Installed	Solar Controller	Installed to power the site at West Ponds. The charge controller is on a plastic box with three batteries on one level of scaffolding just inside the edge of the east pond.
2024-05-01	11400077	PS-30M	Removed	Solar Controller	Removed with the decommissioning of the site. In pretty bad shape after being colonized by ants for years
Solar Panel
2012-05-02	11ZV0M0836	KD140SX-UFBS	Installed	Solar Panel A	Installed to power the site at West Ponds. The solar panels are on top of one level of scaffolding just inside the edge of the east pond.
2012-05-02	11ZV0M0856	KD140SX-UFBS	Installed	Solar Panel B	Installed to power the site at West Ponds. The solar panels are on top of one level of scaffolding just inside the edge of the east pond.
2012-05-02	11ZV0M0855	KD140SX-UFBS	Installed	Solar Panel C	Installed to power the site at West Ponds. The solar panels are on top of one level of scaffolding just inside the edge of the east pond.
2017-05-18	11ZV0M0855	KD140SX-UFBS	Removed	Solar Panel C	Removed from West Pond to make way for new 24V system.
2017-05-18	11ZV0M0856	KD140SX-UFBS	Removed	Solar Panel B	Removed from West Pond to make way for new 24V system.
2017-05-18	11ZV0M0836	KD140SX-UFBS	Removed	Solar Panel A	Removed from West Pond to make way for new 24V system.
2017-05-18	158APW4M0000189	KU265-6MCA	Installed	Solar Panel B	Installed on West Pond to replace old 12V system.
2017-05-18	158APW4M0000188	KU265-6MCA	Installed	Solar Panel A	Installed on West Pond to replace old 12V system.
2024-05-31	158APW4M0000189	KU265-6MCA	Removed	Solar Panel B	Removed with the final clean up decommissioning the site
2024-05-31	158APW4M0000188	KU265-6MCA	Removed	Solar Panel A	Removed with the final clean up decommissioning the site
Water Level
2012-04-17	20010769	CS450	Installed	Water Level	Installed on post northwest of scaffolding at west pilot pond. Not running because of forgotten power connector.
2023-08-08	20010026	CS450	Installed	Water Level	Installed at West Pond to replace sn 20010769, which died after 11 years of service. The old sensor is still installed, but not wired to the datalogger. The new sensor is installed temporarily hangingin the water by the staff gauge. We will install a well when the water level drops.
2024-03-25	20010026	CS450	Removed	Water Level	Removed from WP and brought back to the lab. This sensor is needed at Mayberry, so we are slowly decommissioning West Pond.
2024-05-01	20010769	CS450	Removed	Water Level	Removed with the decommissioning of the site. This has not been used for a while. Should be tested in the lab before disposing.
Weather Station
2021-06-22	C006322	Mark II	Installed	Weather Station	Installed at West Pond for Roberts modeling and will be part of Arable's Cal-Val project.
2024-05-01	C006322	Mark II	Removed	Weather Station	Removed with the decommissioning of the site.

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