Equipment and Calibration
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Equipment Entry
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Documents
Calibration: cal_LI-7700_snTG1-0424.pdfManual: Collecting_LI-7700_Ethernet_Data.pdf
Manual: LI-7700_Manual_V2_201103.pdf
Manual: LI-7700_Manual_V3_201312.pdf
PackingSlip: ps_Licor_20150910.pdf
History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 6575 | 2024-02-26 | Lab | Calibration | Lab | Calibration Location: Lab Last calibration: 2023-09-05 RSSI=77%, Optical RH=5% Ambient P=100.6kPa, Tair=23.0C Zero Air at 350psi, AMP CA04119 4.223 at 600 CH4 Zero Offset: -.063ppm CH4 Span Offset: .009ppm Notes: BWW sensor. After installing it again, I put the spiky hat and spray nozzle on again. The was reservoir was empty; Haley refilled it. |
| 6402 | 2023-09-05 | Lab | Calibration | Lab | Calibration Location: Lab Last calibration: 2023-01-19 RSSI=80%, Optical RH=23% Ambient P=100.0kPa, Tair=25.0C Zero Air at 800psi, AMP CA04119 4.2238 at 850 CH4 Zero Offset: .028ppm CH4 Span Offset: -.0458ppm Notes: Calibrated zero on 2023-09-05 and span on 2023-09-07 (P=100.3 kPa, T=24.1C). After calibration, swapped drierite and flushed headspace with zero air until optics RH=10%. |
| 6362 | 2023-08-08 | Gilbert Tract Gas Analyzer CH4 | Removed | Lab none | Removed from Gilbert Tract for calibration. Replaced by sn TG1-0223. |
| 6169 | 2023-01-19 | Gilbert Tract | Calibration | Gilbert Tract | Calibration Location: Gilbert Tract Last calibration: 2022-06-09 RSSI=86%, Optical RH=23% Ambient P=102.3kPa, Tair=8.0C Zero Air at 1350psi, AMP CA04396 1.9317 at 1250 CH4 Zero Offset: .001ppm CH4 Span Offset: .0017ppm Notes: I wanted to flush the headspace with zero air, but the tubing did not quite reach. I swapped the desiccant. |
| 5896 | 2022-06-09 | Gilbert Tract | Calibration | Gilbert Tract | Calibration Location: Gilbert Tract Last calibration: 2021-11-30 RSSI=74%, Optical RH=16% Ambient P=101kPa, Tair=21.6C Zero Air at 450psi, AMP CA04119 4.2238 at 1450 CH4 Zero Offset: -.01ppm CH4 Span Offset: .0698ppm Notes: Breezy day. Did not change drierite or flush headspace with zero air. |
| 5611 | 2021-11-30 | Gilbert Tract Gas Analyzer CH4 | Calibration | Gilbert Tract Gas Analyzer CH4 | Calibration Location: Gilbert Tract
Last calibration: 2021-06-01 RSSI=85%, Optical RH=22% Ambient P=102.1kPa, Tair=15.2C Zero Air at 100psi, AMP CA04396 1.9317 at 1800 CH4 Zero Offset: .032ppm CH4 Span Offset: -.0197ppm Notes: Relatively still day with a lot of visitors to the site. The zero air tank pressure may have been >100psi, but the regulator was wonky. Zero was stable for 2min after applying zero. Swapped out the desiccant one for one with new drierite after calibration. I didn't flush out the headspace because I wanted to preserve the zero air for more calibrations that day. |
| 5490 | 2021-09-02 | Sherman Wetland Gas Analyzer CH4 | Moved | Gilbert Tract Gas Analyzer CH4 | Moved from SW to GT with the decomissioning of SW and the beginning of GT |
| 5277 | 2021-05-26 | Sherman Wetland Gas Analyzer CH4 | Calibration | Sherman Wetland 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. |
| 4944 | 2020-11-12 | Sherman Wetland Gas Analyzer CH4 | Calibration | Sherman Wetland 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 |
| 4484 | 2020-05-21 | Sherman Wetland Gas Analyzer CH4 | Calibration | Sherman Wetland 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%. |
| 4130 | 2019-10-31 | Sherman Wetland Gas Analyzer CH4 | Calibration | Sherman Wetland 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. |
| 3900 | 2019-04-11 | Sherman Wetland Gas Analyzer CH4 | Calibration | Sherman Wetland 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 |
| 3884 | 2019-02-12 | Sherman Wetland Gas Analyzer CH4 | Upgrade | Sherman Wetland 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." |
| 3772 | 2018-10-25 | Lab none | Installed | Sherman Wetland 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). |
| 3756 | 2018-10-24 | Lab none | Calibration | Lab none | Calibration Location: Lab Last calibration: 2018-04-13 RSSI=82.9%, Optical RH=9% Ambient P=100.6kPa, Tair=27.8C Zero Air at 1500psi, AMP CH4 1.9497 at 1150 CH4 Zero Offset: -0.015ppm CH4 Span Offset: 0.043ppm Notes: First calibration after replacing power board - no problems found. |
| 3755 | 2018-10-22 | Lab none | Upgrade | Lab none | I swapped out power board pn 9677-079 per Licor's instructions. According to Licor the original boards Rev 0, could be damaged by exposure to voltage above 24VDC. The new board Rev 0A (V3) should not have that problem. |
| 3748 | 2018-10-18 | Bouldin Alfalfa Gas Analyzer CH4 | Removed | Lab none | Removed from Bouldin Alfalfa for power board upgrade and to swap in for other two 7700s needing upgrade. |
| 3414 | 2018-04-19 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CH4 | Installed on Bouldin Alfalfa to replace sn TG1-0223 for calibration |
| 3396 | 2018-04-13 | Lab none | Calibration | Lab none | Calibration Location: Lab Last calibration: 2017-10-11 RSSI=75%, Optical RH=4% Ambient P=101.8kPa, Tair=24.2C Zero Air at 500psi, LBL Air 1.9497 at 1500 CH4 Zero Offset: .008ppm CH4 Span Offset: -.0417ppm Notes: Started "new" ultra pure zero air tank that had 500 psi left in it. |
| 3391 | 2018-04-05 | West Pond Gas Analyzer CH4 | Removed | Lab none | Removed from WP and brought back to the lab for calibration. It was replaced by sn TG1-0224. |
| 3150 | 2017-10-13 | Lab none | Installed | West Pond Gas Analyzer CH4 | Installed on West Pond to replace sn TG1-0223 for calibration |
| 3139 | 2017-10-11 | Lab none | Calibration | Lab none | Calibration Location: Lab Last calibration: 2017-03-22 RSSI=76.7%, Optical RH=4% Ambient P=100.5kPa, Tair=23.7C Zero Air at 500psi, AMP CH4 1.9497 at 2000 CH4 Zero Offset: 0.042ppm CH4 Span Offset: -0.001ppm Notes: |
| 3110 | 2017-10-04 | East End-Temp3 Gas Analyzer CH4 | Removed | Lab none | Removed with the decommissioning of Temporary Tower #3 - Boardwalk site. |
| 2883 | 2017-06-23 | Bouldin Alfalfa Gas Analyzer CH4 | Installed | East End-Temp3 Gas Analyzer CH4 | Moved from Bouldin Alfalfa to be installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| 2676 | 2017-03-23 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CH4 | Installed at Bouldin Alfalfa to replace TG1-0421. |
| 2660 | 2017-03-22 | Lab none | Calibration | Lab none | Calibration Location: Lab Last calibration: 2015-07-23 RSSI=84.6%, Optical RH=26% Ambient P=100.7kPa, Tair=23.2C Zero Air at 1700psi, NOAA CH4 1.89919 at 1750 CH4 Zero Offset: 0.05ppm CH4 Span Offset: -0.004ppm Notes: Changed dessicant. Previous calibration was at Licor. |
| 2139 | 2015-12-23 | Twitchell Rice-Trailer | Removed | Lab none | Removed with the temporary tower set up near the building at the rice project for the LGR COS experiment. |
| 2115 | 2015-12-08 | Lab none | Installed | Twitchell Rice-Trailer | Installed near the trailer at Twitchell Rice as a temporary site to test a COS analyzer from LGR |