Equipment and Calibration
Equipment history at Sherman Wetland| ALL | | Anemometer || Barometer || Battery Bank || Camera || CO2 Probe || Conductivity Sensor || Data Logger || DO Sensor || Gas Analyzer || Heat Flux Plate || Interface || Multiplexer || Narrow Band || Net Radiometer || PAR Sensor || Precipitation || 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) AND b.equip=:eq ORDER BY b.serialno, a.eh_date
| Date | Serial No. | Model | Action | Ref | Notes |
|---|---|---|---|---|---|
| Gas Analyzer | |||||
| 2021-03-04 | 0035 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 0065 for calibration. |
| 2021-06-01 | 0035 | LI-7500A | Calibration | Lab | Last calibration: 2021-03-03 AGC=99.9 SDM=0 DAC1=- DAC2=- Ambient P=99.9kPa, Tair=20.2C, Tdew=10.9C Zero Air at 325psi, AMP CA04119 524.77 at 1800 Tdewspan=16.0 CO2 zero 0.9376 -> 0.9375 Offset: -0.4ppm CO2 span 1.0151 -> 1.0204 Offset: -3.52ppm H2O zero 0.8983 -> 0.8985 Offset: 1.3ppm H2O span 1.0319 -> 1.0268 Offset: 0.1ppm Notes: Calibrated with the wrong pressure coefficients. After fixing the pressure coefficients the H2O span was stable and rechecking the CO2 and H2O zeros were also stable - decided okay to use. |
| 2021-05-26 | 0035 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland for calibration. Replaced by sn 0041. |
| 2021-06-01 | 0035 | LI-7500A | Calibration | Lab | Last calibration: 2021-03-03 AGC=99.9 SDM=0 DAC1=- DAC2=- Ambient P=99.9kPa, Tair=20.2C, Tdew=10.9C Zero Air at 325psi, AMP CA04119 524.77 at 1800 Tdewspan=16.0 CO2 zero 0.9376 -> 0.9375 Offset: -0.4ppm CO2 span 1.0151 -> 1.0204 Offset: -3.52ppm H2O zero 0.8983 -> 0.8985 Offset: 1.3ppm H2O span 1.0319 -> 1.0268 Offset: 0.1ppm Notes: Calibrated with the wrong pressure coefficients. After fixing the pressure coefficients the H2O span was stable and rechecking the CO2 and H2O zeros were also stable - decided okay to use. |
| 2019-07-25 | 0041 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at SW to replace sn 75H-2150, which was brought back to the lab for calibration. |
| 2019-11-12 | 0041 | LI-7500A | Calibration | Lab | Last calibration: 2019-07-24 AGC=99.0 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=27.5C, Tdew=12.8C Zero Air at 950psi, AMP CA4396 408.97 at 700 Tdewspan=16.00 CO2 zero 0.997 -> .9968 Offset: -.88ppm CO2 span 1.0163 -> 1.0146 Offset: .65ppm H2O zero 0.8201 -> .8218 Offset: 9.6ppm H2O span 1.0243 -> 1.0267 Offset: -.05ppm Notes: |
| 2019-10-31 | 0041 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland for calibration. Replaced by sn 0073. |
| 2019-11-12 | 0041 | LI-7500A | Calibration | Lab | Last calibration: 2019-07-24 AGC=99.0 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=27.5C, Tdew=12.8C Zero Air at 950psi, AMP CA4396 408.97 at 700 Tdewspan=16.00 CO2 zero 0.997 -> .9968 Offset: -.88ppm CO2 span 1.0163 -> 1.0146 Offset: .65ppm H2O zero 0.8201 -> .8218 Offset: 9.6ppm H2O span 1.0243 -> 1.0267 Offset: -.05ppm Notes: |
| 2021-05-26 | 0041 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 0035 for calibration. |
| 2021-09-21 | 0041 | LI-7500A | Calibration | Lab | Last calibration: 2021-05-25 AGC=98 SDM= DAC1= DAC2= Ambient P=100.3kPa, Tair=26.6C, Tdew=11.3C Zero Air at 1700psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.9966 -> .9667 Offset: .29ppm CO2 span 1.0137 -> 1.0145 Offset: -.44ppm H2O zero 0.8206 -> .8224 Offset: 10.9ppm H2O span 1.0266 -> 1.0228 Offset: .09ppm Notes: Calibrated zero and CO2 span on 9/20. There was an issue with the dew point generator where it was producing a dewpoint ~16C when the temp switch was set to 20.00C. I calibrated the H2O span the next day on 9/21. We fixed the problem by adding more water in the condenser block on the back of the machine. The water level looked ok while the cap was on and the machine was running, but once I turned the machine off and took the cap off, the water level dropped to below the "Min" line. After I added water and turned it back on, the dewpoint generator got to a reasonable dewpoint and it seemed stable. |
| 2021-09-02 | 0041 | LI-7500A | Moved | Interface LI-7550 | Moved from SW to GT with the decomissioning of SW and the beginning of GT |
| 2021-09-21 | 0041 | LI-7500A | Calibration | Lab | Last calibration: 2021-05-25 AGC=98 SDM= DAC1= DAC2= Ambient P=100.3kPa, Tair=26.6C, Tdew=11.3C Zero Air at 1700psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.9966 -> .9667 Offset: .29ppm CO2 span 1.0137 -> 1.0145 Offset: -.44ppm H2O zero 0.8206 -> .8224 Offset: 10.9ppm H2O span 1.0266 -> 1.0228 Offset: .09ppm Notes: Calibrated zero and CO2 span on 9/20. There was an issue with the dew point generator where it was producing a dewpoint ~16C when the temp switch was set to 20.00C. I calibrated the H2O span the next day on 9/21. We fixed the problem by adding more water in the condenser block on the back of the machine. The water level looked ok while the cap was on and the machine was running, but once I turned the machine off and took the cap off, the water level dropped to below the "Min" line. After I added water and turned it back on, the dewpoint generator got to a reasonable dewpoint and it seemed stable. |
| 2020-12-09 | 0065 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 75H-2667 for calibration. |
| 2021-03-15 | 0065 | LI-7500A | Calibration | Lab | Last calibration: 2020-12-08 AGC=102 SDM= DAC1= DAC2= Ambient P=99.8kPa, Tair=24.0C, Tdew=1.55C Zero Air at 400psi, AMP CA3923 474.19 at 550 Tdewspan=20.00 CO2 zero 0.8916 -> .8914 Offset: -1.05ppm CO2 span 1.0213 -> 1.0153 Offset: .74ppm H2O zero 0.7303 -> .7311 Offset: 6.2ppm H2O span 1.0165 -> 1.017 Offset: -.02ppm Notes: |
| 2021-03-04 | 0065 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland and brought back to the lab for calibration. Replaced by sn 0035. |
| 2021-03-15 | 0065 | LI-7500A | Calibration | Lab | Last calibration: 2020-12-08 AGC=102 SDM= DAC1= DAC2= Ambient P=99.8kPa, Tair=24.0C, Tdew=1.55C Zero Air at 400psi, AMP CA3923 474.19 at 550 Tdewspan=20.00 CO2 zero 0.8916 -> .8914 Offset: -1.05ppm CO2 span 1.0213 -> 1.0153 Offset: .74ppm H2O zero 0.7303 -> .7311 Offset: 6.2ppm H2O span 1.0165 -> 1.017 Offset: -.02ppm Notes: |
| 2017-11-30 | 0073 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at SW to replace sn 75H-2667. |
| 2018-04-13 | 0073 | LI-7500A | Calibration | Lab | Last calibration: 2017-11-27 AGC=99 SDM=0 DAC1=0 DAC2=0 Ambient P=101.9kPa, Tair=23.7C, Tdew=2.9C Zero Air at 100psi, LBL Air 408.97 at 1500 Tdewspan=16.00 CO2 zero 0.9571 -> .9575 Offset: .99ppm CO2 span 1.0118 -> 1.0145 Offset: -1.26ppm H2O zero 0.7306 -> .7295 Offset: -6.9ppm H2O span 1 -> 1.0131 Offset: -.3ppm Notes: |
| 2018-03-19 | 0073 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from SW for calibration, replaced by SN 75H-2176. |
| 2018-04-13 | 0073 | LI-7500A | Calibration | Lab | Last calibration: 2017-11-27 AGC=99 SDM=0 DAC1=0 DAC2=0 Ambient P=101.9kPa, Tair=23.7C, Tdew=2.9C Zero Air at 100psi, LBL Air 408.97 at 1500 Tdewspan=16.00 CO2 zero 0.9571 -> .9575 Offset: .99ppm CO2 span 1.0118 -> 1.0145 Offset: -1.26ppm H2O zero 0.7306 -> .7295 Offset: -6.9ppm H2O span 1 -> 1.0131 Offset: -.3ppm Notes: |
| 2019-10-31 | 0073 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 0041 for calibration. |
| 2020-02-11 | 0073 | LI-7500A | Calibration | Lab | Last calibration: 2019-10-30 AGC=100.3 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=26.4C, Tdew=-2.8C Zero Air at 800psi, AMP CA04396 408.97 at 550 Tdewspan=16.0 CO2 zero 0.9574 -> 0.9572 Offset: -0.8ppm CO2 span 1.0091 -> 1.0096 Offset: -0.37ppm H2O zero 0.7311 -> 0.7313 Offset: 0.9ppm H2O span 1.0052 -> 1.0091 Offset: -0.08ppm Notes: Ambient air very dry. |
| 2020-02-06 | 0073 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland and brought back to the alb for calibration. Replaced by sn 75H-2180. |
| 2020-02-11 | 0073 | LI-7500A | Calibration | Lab | Last calibration: 2019-10-30 AGC=100.3 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=26.4C, Tdew=-2.8C Zero Air at 800psi, AMP CA04396 408.97 at 550 Tdewspan=16.0 CO2 zero 0.9574 -> 0.9572 Offset: -0.8ppm CO2 span 1.0091 -> 1.0096 Offset: -0.37ppm H2O zero 0.7311 -> 0.7313 Offset: 0.9ppm H2O span 1.0052 -> 1.0091 Offset: -0.08ppm Notes: Ambient air very dry. |
| 2019-01-18 | 0418 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at SW to replace 75H-2180, which was brought back to the lab for calibration. |
| 2019-04-22 | 0418 | LI-7500A | Calibration | Lab | Last calibration: 2019-01-07 AGC=95 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=24.2C, Tdew=11.4C Zero Air at 1100psi, AMP Air 408.97 at 700 Tdewspan=16.00 CO2 zero 0.8992 -> .8992 Offset: -.04ppm CO2 span 1.0033 -> 1.0011 Offset: 1.21ppm H2O zero 0.8465 -> .8464 Offset: -.4ppm H2O span 0.9832 -> .9866 Offset: -.07ppm Notes: |
| 2019-04-18 | 0418 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from SW and brought back to the lab for calibration. It was replaced by sn 75H-2150. |
| 2019-04-22 | 0418 | LI-7500A | Calibration | Lab | Last calibration: 2019-01-07 AGC=95 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=24.2C, Tdew=11.4C Zero Air at 1100psi, AMP Air 408.97 at 700 Tdewspan=16.00 CO2 zero 0.8992 -> .8992 Offset: -.04ppm CO2 span 1.0033 -> 1.0011 Offset: 1.21ppm H2O zero 0.8465 -> .8464 Offset: -.4ppm H2O span 0.9832 -> .9866 Offset: -.07ppm Notes: |
| 2016-09-29 | 1594 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Sherman Wetland tower to replace sn 75H-2668 for calibration. |
| 2016-12-29 | 1594 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland for calibration. Replaced by sn 75H-2180 |
| 2019-04-18 | 75H-2150 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at SW to replace sn 0418, which was brought back to the lab for calibration. |
| 2019-08-01 | 75H-2150 | LI-7500A | Calibration | Lab | Last calibration: 2019-04-15 AGC=97.7 SDM= DAC1= DAC2= Ambient P=100.7kPa, Tair=23.4C, Tdew=13.3C Zero Air at 975psi, AMP CA4396 408.97 at 800 Tdewspan=20.00 CO2 zero 0.9014 -> .9022 Offset: 3.41ppm CO2 span 1.003 -> 1.0086 Offset: -2.05ppm H2O zero 0.8671 -> .8673 Offset: 1.2ppm H2O span 1.0077 -> 10.114 Offset: -.08ppm Notes: When SS was 97.7, I reset it to 100. I uploaded the the calibration file from 2018-10-24 and copied in the manual coefficients for CO2 span, CO2 zero, H2O span, and H2O zero from the database's record of the most recent calibration on 2019-04-15. |
| 2019-07-25 | 75H-2150 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from SW and brought back to the lab for calibration. It was replaced by sn 0041. |
| 2019-08-01 | 75H-2150 | LI-7500A | Calibration | Lab | Last calibration: 2019-04-15 AGC=97.7 SDM= DAC1= DAC2= Ambient P=100.7kPa, Tair=23.4C, Tdew=13.3C Zero Air at 975psi, AMP CA4396 408.97 at 800 Tdewspan=20.00 CO2 zero 0.9014 -> .9022 Offset: 3.41ppm CO2 span 1.003 -> 1.0086 Offset: -2.05ppm H2O zero 0.8671 -> .8673 Offset: 1.2ppm H2O span 1.0077 -> 10.114 Offset: -.08ppm Notes: When SS was 97.7, I reset it to 100. I uploaded the the calibration file from 2018-10-24 and copied in the manual coefficients for CO2 span, CO2 zero, H2O span, and H2O zero from the database's record of the most recent calibration on 2019-04-15. |
| 2018-03-19 | 75H-2176 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on SW to replace SN 0073 for calibration. |
| 2018-07-10 | 75H-2176 | LI-7500A | Calibration | Lab | Last calibration: 2018-03-05 AGC=101.3 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=27C, Tdew=13.3C Zero Air at 175psi, LBL Air 408.97 at 1400 Tdewspan=16.00 CO2 zero 0.8679 -> .8671 Offset: -3.65ppm CO2 span 1.0057 -> 1.0029 Offset: 1.23ppm H2O zero 0.8486 -> .848 Offset: -3.4ppm H2O span 0.9112 -> .9088 Offset: .05ppm Notes: |
| 2018-06-28 | 75H-2176 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from SW and brought back to the lab for calibration. It was replaced by 75h-2667. |
| 2018-07-10 | 75H-2176 | LI-7500A | Calibration | Lab | Last calibration: 2018-03-05 AGC=101.3 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=27C, Tdew=13.3C Zero Air at 175psi, LBL Air 408.97 at 1400 Tdewspan=16.00 CO2 zero 0.8679 -> .8671 Offset: -3.65ppm CO2 span 1.0057 -> 1.0029 Offset: 1.23ppm H2O zero 0.8486 -> .848 Offset: -3.4ppm H2O span 0.9112 -> .9088 Offset: .05ppm Notes: |
| 2016-12-29 | 75H-2180 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland after calibration to replace sn 1594 |
| 2017-04-20 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2016-12-23 AGC=100.5 SDM= DAC1= DAC2= Ambient P=101.1kPa, Tair=23.6C, Tdew=7.63C Zero Air at 1600psi, NOAA CO2 513.22 at 250 Tdewspan=16.00 CO2 zero 0.9145 -> 0.9144 Offset: -0.53ppm CO2 span 1.0287 -> 1.026 Offset: 1.83ppm H2O zero 0.8836 -> 0.8861 Offset: -1.4ppm H2O span 1.0124 -> 1.023 Offset: 0.5ppm Notes: I re-did the H2O zero because the first offset was large, so I wanted to double check. The first offset was 16.8 mmol/m3. The second offset was -1.4 mmol/m3, so I felt confident in the calibration. |
| 2017-03-29 | 75H-2180 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland and brought back to the lab for calibration. It was replaced by sn 75H-2669. |
| 2017-04-20 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2016-12-23 AGC=100.5 SDM= DAC1= DAC2= Ambient P=101.1kPa, Tair=23.6C, Tdew=7.63C Zero Air at 1600psi, NOAA CO2 513.22 at 250 Tdewspan=16.00 CO2 zero 0.9145 -> 0.9144 Offset: -0.53ppm CO2 span 1.0287 -> 1.026 Offset: 1.83ppm H2O zero 0.8836 -> 0.8861 Offset: -1.4ppm H2O span 1.0124 -> 1.023 Offset: 0.5ppm Notes: I re-did the H2O zero because the first offset was large, so I wanted to double check. The first offset was 16.8 mmol/m3. The second offset was -1.4 mmol/m3, so I felt confident in the calibration. |
| 2018-10-04 | 75H-2180 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on Sherman Wetland to replace sn 75H-2667 for calibration. |
| 2019-01-25 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2018-10-02 AGC=98 SDM=0 DAC1=0 DAC2=0 Ambient P=101.2kPa, Tair=26.9C, Tdew=5.3C Zero Air at 1200psi, AMP Air 408.97 at 875 Tdewspan=16.00 CO2 zero 0.9137 -> .9137 Offset: 407.3ppm CO2 span 1.023 -> 1.0262 Offset: -1.67ppm H2O zero 0.883 -> .8891 Offset: 38.5ppm H2O span 0.9893 -> 1.0199 Offset: -.63ppm Notes: Date of last zeros were 2018-06-25, but the existing coefficients matched database entry from 2018-10-02. Training Jiangong. |
| 2019-01-18 | 75H-2180 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from SW and brought back to the lab for calibration. It was replaced by sn 0418. |
| 2019-01-25 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2018-10-02 AGC=98 SDM=0 DAC1=0 DAC2=0 Ambient P=101.2kPa, Tair=26.9C, Tdew=5.3C Zero Air at 1200psi, AMP Air 408.97 at 875 Tdewspan=16.00 CO2 zero 0.9137 -> .9137 Offset: 407.3ppm CO2 span 1.023 -> 1.0262 Offset: -1.67ppm H2O zero 0.883 -> .8891 Offset: 38.5ppm H2O span 0.9893 -> 1.0199 Offset: -.63ppm Notes: Date of last zeros were 2018-06-25, but the existing coefficients matched database entry from 2018-10-02. Training Jiangong. |
| 2020-02-06 | 75H-2180 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 0073, which was brought back to the lab for calibration. |
| 2020-05-22 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2020-02-03 AGC=99.5 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=23.2C, Tdew=9.6C Zero Air at 750psi, AMP CA04396 408.97 at 600 Tdewspan=16.0 CO2 zero 0.9137 -> 0.9140 Offset: 1.4ppm CO2 span 1.0319 -> 1.0317 Offset: 0.18ppm H2O zero 0.8884 -> 0.8899 Offset: 9.5ppm H2O span 1.0125 -> 1.0184 Offset: -0.13ppm Notes: |
| 2020-05-21 | 75H-2180 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland and brought back to the lab for calibration. Replaced by sn 75H-2182. |
| 2020-05-22 | 75H-2180 | LI-7500A | Calibration | Lab | Last calibration: 2020-02-03 AGC=99.5 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=23.2C, Tdew=9.6C Zero Air at 750psi, AMP CA04396 408.97 at 600 Tdewspan=16.0 CO2 zero 0.9137 -> 0.9140 Offset: 1.4ppm CO2 span 1.0319 -> 1.0317 Offset: 0.18ppm H2O zero 0.8884 -> 0.8899 Offset: 9.5ppm H2O span 1.0125 -> 1.0184 Offset: -0.13ppm Notes: |
| 2017-08-02 | 75H-2182 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Replaced 75H-2514 at Sherman Wetland. |
| 2017-08-16 | 75H-2182 | LI-7500A | Calibration | Lab | Last calibration: 2017-04-20 AGC=87.5 SDM=0 DAC1=0 DAC2=0 Ambient P=100.4kPa, Tair=23.9C, Tdew=12.7C Zero Air at 1075psi, AMP Air 408.97 at 2000 Tdewspan=16.00 CO2 zero 0.8838 -> .8832 Offset: -2.73ppm CO2 span 1.0164 -> 1.0123 Offset: 2.13ppm H2O zero 0.8454 -> .8436 Offset: -11.4ppm H2O span 1.0139 -> 1.0038 Offset: .2ppm Notes: |
| 2020-05-21 | 75H-2182 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 75H-2180 for calibration. |
| 2020-11-24 | 75H-2182 | LI-7500A | Calibration | Lab | Last calibration: 2020-05-22 AGC=99.5 SDM= DAC1= DAC2= Ambient P=100.8kPa, Tair=24.8C, Tdew=7.7C Zero Air at 525psi, AMP CA4396 408.97 at 375 Tdewspan=20.00 CO2 zero 0.8849 -> .8850 Offset: .26ppm CO2 span 1.0267 -> 1.0259 Offset: .41ppm H2O zero 0.8471 -> .8473 Offset: 1.7ppm H2O span 1.0159 -> 1.0212 Offset: -.12ppm Notes: H2O span was taking a while, so I turned off the LI-610 and added in 20ml DI water to the reservoir. I restarted the H2O span and after waiting a while, it looked stable in the end. |
| 2020-08-28 | 75H-2182 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland for calibration. Replaced by sn 75H-2667. |
| 2020-11-24 | 75H-2182 | LI-7500A | Calibration | Lab | Last calibration: 2020-05-22 AGC=99.5 SDM= DAC1= DAC2= Ambient P=100.8kPa, Tair=24.8C, Tdew=7.7C Zero Air at 525psi, AMP CA4396 408.97 at 375 Tdewspan=20.00 CO2 zero 0.8849 -> .8850 Offset: .26ppm CO2 span 1.0267 -> 1.0259 Offset: .41ppm H2O zero 0.8471 -> .8473 Offset: 1.7ppm H2O span 1.0159 -> 1.0212 Offset: -.12ppm Notes: H2O span was taking a while, so I turned off the LI-610 and added in 20ml DI water to the reservoir. I restarted the H2O span and after waiting a while, it looked stable in the end. |
| 2017-06-23 | 75H-2514 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace 75H-2669. |
| 2017-08-03 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2017-06-20 AGC=101.4 SDM= DAC1= DAC2= Ambient P=101.3kPa, Tair=24.9C, Tdew=14.3C Zero Air at 2100psi, AMP Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9041 -> .9038 Offset: -1.36ppm CO2 span 1.0115 -> 1.018 Offset: -3.31ppm H2O zero 0.8378 -> .8384 Offset: 4.7ppm H2O span 1.0019 -> 1.0081 Offset: -.34ppm Notes: |
| 2017-08-02 | 75H-2514 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed for calibration and replaced by 75H-2182 |
| 2017-08-03 | 75H-2514 | LI-7500A | Calibration | Lab | Last calibration: 2017-06-20 AGC=101.4 SDM= DAC1= DAC2= Ambient P=101.3kPa, Tair=24.9C, Tdew=14.3C Zero Air at 2100psi, AMP Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9041 -> .9038 Offset: -1.36ppm CO2 span 1.0115 -> 1.018 Offset: -3.31ppm H2O zero 0.8378 -> .8384 Offset: 4.7ppm H2O span 1.0019 -> 1.0081 Offset: -.34ppm Notes: |
| 2017-08-16 | 75H-2667 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at SW to replace sn 75H-2182. |
| 2017-12-15 | 75H-2667 | LI-7500A | Calibration | Lab | Last calibration: 2017-08-14 AGC=105.9 SDM=0 DAC1=0 DAC2=0 Ambient P=100.7kPa, Tair=21.3C, Tdew=6.46C Zero Air at 300psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9418 -> .9415 Offset: -1.14ppm CO2 span 1.0162 -> 1.0207 Offset: -3.47ppm H2O zero 0.8392 -> .8372 Offset: -11.7ppm H2O span 1.0214 -> 1.0166 Offset: .1ppm Notes: |
| 2017-11-30 | 75H-2667 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from SW and brought back to the lab for calibration |
| 2017-12-15 | 75H-2667 | LI-7500A | Calibration | Lab | Last calibration: 2017-08-14 AGC=105.9 SDM=0 DAC1=0 DAC2=0 Ambient P=100.7kPa, Tair=21.3C, Tdew=6.46C Zero Air at 300psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.9418 -> .9415 Offset: -1.14ppm CO2 span 1.0162 -> 1.0207 Offset: -3.47ppm H2O zero 0.8392 -> .8372 Offset: -11.7ppm H2O span 1.0214 -> 1.0166 Offset: .1ppm Notes: |
| 2018-06-28 | 75H-2667 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at SW to replace sn 75H-2176, which was brought back to the lab for calibration. |
| 2018-10-09 | 75H-2667 | LI-7500A | Calibration | Lab | Last calibration: 2018-06-25 AGC=104 SDM=0 DAC1=0 DAC2=0 Ambient P=99.9kPa, Tair=27.7C, Tdew=9.5C Zero Air at 1450psi, AMP Air 408.97 at 1200 Tdewspan=16.00 CO2 zero 0.9414 -> .9413 Offset: -.42ppm CO2 span 1.0162 -> 1.0127 Offset: -87.77ppm H2O zero 0.8375 -> .8362 Offset: -7.4ppm H2O span 1.0237 -> 1.0328 Offset: -.19ppm Notes: Calibrated by Katrina. The CO2 span offset is large, but the change is coefficients is small, so perhaps Katrina wrote down the wrong offset. |
| 2018-10-04 | 75H-2667 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland for calibration. Replaced by sn 75H-2180. |
| 2018-10-09 | 75H-2667 | LI-7500A | Calibration | Lab | Last calibration: 2018-06-25 AGC=104 SDM=0 DAC1=0 DAC2=0 Ambient P=99.9kPa, Tair=27.7C, Tdew=9.5C Zero Air at 1450psi, AMP Air 408.97 at 1200 Tdewspan=16.00 CO2 zero 0.9414 -> .9413 Offset: -.42ppm CO2 span 1.0162 -> 1.0127 Offset: -87.77ppm H2O zero 0.8375 -> .8362 Offset: -7.4ppm H2O span 1.0237 -> 1.0328 Offset: -.19ppm Notes: Calibrated by Katrina. The CO2 span offset is large, but the change is coefficients is small, so perhaps Katrina wrote down the wrong offset. |
| 2020-08-28 | 75H-2667 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 75H-2182 for calibration. |
| 2021-03-01 | 75H-2667 | LI-7500A | Calibration | Lab | Last calibration: 2020-08-25 AGC=102.6 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=27.6C, Tdew=2.4C Zero Air at 500psi, AMP CA04396 408.97 at 250 Tdewspan=20.0 CO2 zero 0.942 -> 0.9423 Offset: 1.2ppm CO2 span 1.0172 -> 1.0092 Offset: 4.13ppm H2O zero 0.8403 -> 0.8385 Offset: -10.8ppm H2O span 1.0244 -> 1.0147 Offset: 0.2ppm Notes: Flow rates were larger than usual - 2lpm instead of 2cfpm |
| 2020-12-09 | 75H-2667 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from Sherman Wetland for calibration. Replaced by sn 0065. |
| 2021-03-01 | 75H-2667 | LI-7500A | Calibration | Lab | Last calibration: 2020-08-25 AGC=102.6 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=27.6C, Tdew=2.4C Zero Air at 500psi, AMP CA04396 408.97 at 250 Tdewspan=20.0 CO2 zero 0.942 -> 0.9423 Offset: 1.2ppm CO2 span 1.0172 -> 1.0092 Offset: 4.13ppm H2O zero 0.8403 -> 0.8385 Offset: -10.8ppm H2O span 1.0244 -> 1.0147 Offset: 0.2ppm Notes: Flow rates were larger than usual - 2lpm instead of 2cfpm |
| 2016-05-24 | 75H-2668 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed on the Sherman Wetland tower at the initial set up of the site. |
| 2016-12-06 | 75H-2668 | LI-7500A | Calibration | Lab | Last calibration: 2016-05-20 AGC=103.3 SDM=6 DAC1= DAC2= Ambient P=100.29kPa, Tair=15.36C, Tdew=3.00C Zero Air at 350psi, God CO2 421.22 at 400 Tdewspan=16.02 CO2 zero 0.9385 -> 0.9385 Offset: 0.0ppm CO2 span 1.0136 -> 1.0171 Offset: -1.92ppm H2O zero 0.8969 -> 0.9017 Offset: 30.2ppm H2O span 1.0146 -> 1.0841 Offset: -1.41ppm Notes: |
| 2016-09-29 | 75H-2668 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed from the Sherman Wetland tower for calibration. Replaced by sn 1594. |
| 2016-12-06 | 75H-2668 | LI-7500A | Calibration | Lab | Last calibration: 2016-05-20 AGC=103.3 SDM=6 DAC1= DAC2= Ambient P=100.29kPa, Tair=15.36C, Tdew=3.00C Zero Air at 350psi, God CO2 421.22 at 400 Tdewspan=16.02 CO2 zero 0.9385 -> 0.9385 Offset: 0.0ppm CO2 span 1.0136 -> 1.0171 Offset: -1.92ppm H2O zero 0.8969 -> 0.9017 Offset: 30.2ppm H2O span 1.0146 -> 1.0841 Offset: -1.41ppm Notes: |
| 2017-03-29 | 75H-2669 | LI-7500A | Installed | Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 75H-2180. |
| 2017-08-01 | 75H-2669 | LI-7500A | Calibration | Lab | Last calibration: 2017-03-21 AGC=100.1 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=24.0C, Tdew=15.8C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9191 -> .9199 Offset: 3.65ppm CO2 span 1.0115 -> .9533 Offset: 33.15ppm H2O zero 0.8978 -> .9118 Offset: 78.4ppm H2O span 1.0138 -> .8978 Offset: 2.66ppm Notes: 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-2669 | LI-7500A | Removed | Gas Analyzer CO2/H2O | Removed for calibration from Sherman Wetland; replaced by 75H-2514. |
| 2017-08-01 | 75H-2669 | LI-7500A | Calibration | Lab | Last calibration: 2017-03-21 AGC=100.1 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=24.0C, Tdew=15.8C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9191 -> .9199 Offset: 3.65ppm CO2 span 1.0115 -> .9533 Offset: 33.15ppm H2O zero 0.8978 -> .9118 Offset: 78.4ppm H2O span 1.0138 -> .8978 Offset: 2.66ppm Notes: 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? |
| 2017-03-23 | TG1-0224 | LI-7700 | Installed | Gas Analyzer CH4 | Installed at Sherman Wetland to replace TG1-0423. |
| 2017-10-26 | TG1-0224 | LI-7700 | Removed | Gas Analyzer CH4 | Removed from SW tower for calibration and because the temperature sensor was broken (reading 9999). Replaced by sn TG1-0421. |
| 2017-10-26 | TG1-0421 | LI-7700 | Installed | Gas Analyzer CH4 | Installed at SW to replace sn TG1-0224. |
| 2018-05-10 | TG1-0421 | LI-7700 | Removed | Gas Analyzer CH4 | Removed from Sherman Wetland for calibration. Replaced by sn TG1-0423 |
| 2016-05-24 | TG1-0423 | LI-7700 | Installed | Gas Analyzer CH4 | Installed on the Sherman Wetland tower at the initial set up of the site. |
| 2016-10-11 | TG1-0423 | LI-7700 | Calibration | Gas Analyzer CH4 | Calibration Location: Sherman Wetland Last calibration: 2016-05-20 RSSI=78.7%, Optical RH=23% Ambient P=101.6kPa, Tair=16.4C zero air at 850psi, AMP CH4 4.030 at 1900 CH4 Zero Offset: 0.026ppm CH4 Span Offset: 0.023ppm Notes: Windy. |
| 2017-03-23 | TG1-0423 | LI-7700 | Removed | Gas Analyzer CH4 | Removed from Sherman Wetland and brought back to the lab for calibration. It was replaced by TG1-0224. |
| 2018-05-10 | TG1-0423 | LI-7700 | Installed | Data Logger Met | Installed on Sherman Wetland to replace sn TG1-0421 for calibration |
| 2018-10-25 | TG1-0423 | LI-7700 | Removed | Gas Analyzer CH4 | Removed from SW and brought back to the lab for a power board swap and calibration. It was replaced by sn TG1-0424. |
| 2018-10-25 | TG1-0424 | LI-7700 | Installed | Gas Analyzer CH4 | Installed at SW to replace sn TG1-0423, which was brought back to the lab for power board replacement and for calibration. Heater settings changed from Bouldin settings (top: 25%, 2 degC, 18:00-11:00; bottom: 25%, 30%, 18:00-11:00) to Sherman/Twitchell settings (top: 5%, 2 degC, 18:00-9:00; bottom: 5%, 30%, 18:00-9:00). |
| 2019-02-12 | TG1-0424 | LI-7700 | Upgrade | Gas Analyzer CH4 | Upgraded firmware (embedded software) from 1.0.23 to 1.0.27. Licor change log: "Expanded a buffer in the DSP to prevent phase changes in the DSP data caused when the buffer filled up. This fixes the synchronization loss and resultant data loss between the LI-7550 and LI-7700." |
| 2019-04-11 | TG1-0424 | LI-7700 | Calibration | Gas Analyzer CH4 | Calibration Location: Sherman Wetland Last calibration: 2018-10-24 RSSI=77%, Optical RH=13% Ambient P=102.0kPa, Tair=15.4C Zero Air M4002 at 1800psi, AMP CA03923 3.121 at 1900 CH4 Zero Offset: 0.051ppm CH4 Span Offset: 0.024ppm Notes: Windy day 3m/s to 7m/s |
| 2019-10-31 | TG1-0424 | LI-7700 | Calibration | Gas Analyzer CH4 | Calibration Location: Sherman Wetland Last calibration: 2019-04-11 RSSI=78%, Optical RH=19% Ambient P=102.4kPa, Tair=18.1C Zero Air at 1000psi, AMP CA03923 3.121 at 1000 CH4 Zero Offset: 0.005ppm CH4 Span Offset: 0.005ppm Notes: Zero had random large spikes that turned out to be a tiny insect crawling around the bottom mirror - removed before span. Otherwise, very tight calibration. |
| 2020-05-21 | TG1-0424 | LI-7700 | Calibration | Gas Analyzer CH4 | Calibration Location: Sherman Wetland Last calibration: 2019-10-31 RSSI=84%, Optical RH=22% Ambient P=101.5kPa, Tair=24.1C Zero Air at 750psi, AMP CA3923 3.121 at 800 CH4 Zero Offset: 0.006ppm CH4 Span Offset: -.013ppm Notes: Breezy day. Swapped optics drierite after calibration and used cal gas to dry head space. New optics RH was 9%. |
| 2020-11-12 | TG1-0424 | LI-7700 | Calibration | Gas Analyzer CH4 | Calibration Location: Sherman Wetland Last calibration: 2020-05-21 RSSI=82%, Optical RH=12% Ambient P=101.8kPa, Tair=14.7C Zero Air at 700psi, AMP CA3923 3.121 at 700 CH4 Zero Offset: -0.084ppm CH4 Span Offset: 0.002ppm Notes: Still day |
| 2021-05-26 | TG1-0424 | LI-7700 | Calibration | Gas Analyzer CH4 | Calibration Location: Sherman Wetland Last calibration: 2020-11-16 RSSI=80%, Optical RH=15% Ambient P=101kPa, Tair=27.3C AMP FB04161 at 100psi, AMP CA04119 4.223 at 2050 CH4 Zero Offset: -0.022ppm CH4 Span Offset: 0.017ppm Notes: Breezy day. Zero gas was an AMP cal gas in a baby tank that we borrowed for the day. Not much zero air in the tank but it was enough. |
| 2021-09-02 | TG1-0424 | LI-7700 | Moved | Gas Analyzer CH4 | Moved from SW to GT with the decomissioning of SW and the beginning of GT |