Equipment and Calibration
View History
Equipment Entry
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Documents
Calibration: cal_LI-7500_sn75H-2667.pdfManual: LI-7500A_Manual_V1_200912.pdf
Manual: LI-7500A_Manual_v2_201104.pdf
Manual: LI-7500A_Manual_V4_201303.pdf
Manual: LI-7500A_Manual_V5_201310.pdf
PackingSlip: ps_Licor_20150910.pdf
History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 7013 | 2024-11-06 | Bouldin Alfalfa Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Bouldin Alfalfa for calibration. Replaced by sn 0073. |
| 6785 | 2024-07-22 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CO2/H2O | Installed at Bouldin Alfalfa to replace sn 0065 for calibration. |
| 6757 | 2024-07-19 | Lab | Calibration | Lab | Last calibration: 2024-04-10 AGC=99.0 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.38kPa, Tair=24.31C, Tdew=14.4C Zero Air at 1700psi, AMP CA04119 524.77 at 350 Tdewspan=20.00 CO2 zero 0.9409 -> .9416 Offset: 2.77ppm CO2 span 1.0213 -> 1.0177 Offset: 2.39ppm H2O zero 0.8441 -> .8407 Offset: -20.2ppm H2O span 1.0404 -> 1.0371 Offset: .06ppm Notes: Used "524.67" as CO2 span point and "19.99" as H2O span point in 7550 software. Larger H2O zero offset (-20.2 mmol/m3) than usual. |
| 6760 | 2024-07-16 | Mayberry Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Mayberry for calibration. Replaced by sn 0073. |
| 6653 | 2024-04-11 | Lab none | Installed | Mayberry Gas Analyzer CO2/H2O | Installed at Mayberry to replace sn 0041 for calibration. |
| 6645 | 2024-04-10 | Lab | Calibration | Lab | Last calibration: 2023-12-20 AGC=99.6 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.69kPa, Tair=24.8C, Tdew=11.0C Zero Air at 300psi, AMP CA04119 524.77 at 550 Tdewspan=20.00 CO2 zero 0.9413 -> .9409 Offset: -1.55ppm CO2 span 1.0207 -> 1.0213 Offset: -.35ppm H2O zero 0.8427 -> .8441 Offset: 8.5ppm H2O span 1.0363 -> 1.0404 Offset: -.09ppm Notes: Used 524.7 as the CO2 span point |
| 6630 | 2024-03-26 | Tonzi Gas Analyzer CO2/H2O Floor | Removed | Lab none | Removed from Tonzi Floor for calibration. Replaced by sn 75H-2176. |
| 6501 | 2024-01-02 | Lab none | Installed | Tonzi Gas Analyzer CO2/H2O Floor | Installed at Tonzi Floor to replace sn 0041 for calibration. |
| 6490 | 2023-12-20 | Lab | Calibration | Lab | Last calibration: 2023-07-10 AGC=100.0 SDM=0 DAC1=- DAC2=- AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=99.6kPa, Tair=21.7C, Tdew=10.4C Zero Air at 500psi, AMP CA04119 524.77 at 750 Tdewspan=18.0 CO2 zero 0.9411 -> 0.9413 Offset: 0.7ppm CO2 span 1.0232 -> 1.0207 Offset: 1.83ppm H2O zero 0.8427 -> 0.8427 Offset: 0.2ppm H2O span 1.0367 -> 1.0363 Offset: 0.01ppm Notes: Reset SS from 103.0, Database says last cal was 07-14, instrument says 07-10. |
| 6452 | 2023-10-27 | East End Gas Analyzer CO2/H2O | Removed | Lab none | Removed from East End for calibration. Replaced by sn 75H-2182. |
| 6324 | 2023-07-11 | Lab none | Installed | East End Gas Analyzer CO2/H2O | Installed at East End to replace sn 75H-2176 for calibration. |
| 6331 | 2023-07-10 | Lab none | Calibration | Lab none | Last calibration: 2023-04-13
AGC=101.0 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.4kPa, Tair=21.5C, Tdew=12.4C Zero Air at 1000psi, AMP CA04119 524.77 at 950 Tdewspan=16.00 CO2 zero 0.9417 -> .941 Offset: -2.21ppm CO2 span 1.0213 -> 1.0232 Offset: -1.37ppm H2O zero 0.8141 -> .8427 Offset: 7.9ppm H2O span 1.0317 -> 1.0367 Offset: -.09ppm Notes: Vertical orientation |
| 6309 | 2023-06-16 | Tonzi-Tower Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Tonzi-Tower for calibration. Replaced by sn 0042. |
| 6297 | 2023-04-14 | Lab none | Installed | Tonzi-Tower Gas Analyzer CO2/H2O | Installed at Tonzi to replace sn 1594, which probably needs to go back to the factory. |
| 6252 | 2023-04-13 | Lab | Calibration | Lab | Last calibration: 2023-01-13 AGC=101 SDM=0 DAC1=- DAC2=- Ambient P=100.2kPa, Tair=23.1C, Tdew=-1.99C Zero Air at 1200psi, AMP CA04119 524.77 at 1150 Tdewspan=16.0 CO2 zero 0.9418 -> 0.9417 Offset: -0.2ppm CO2 span 1.0233 -> 1.0213 Offset: 1.43ppm H2O zero 0.8421 -> 0.8141 Offset: -4.1ppm H2O span 1.0314 -> 1.0317 Offset: 0.0ppm Notes: |
| 6253 | 2023-04-11 | Gilbert Tract Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Gilbert Tract for calibration. Replaced by sn 0065. |
| 6176 | 2023-01-19 | Lab none | Installed | Gilbert Tract Gas Analyzer CO2/H2O | Installed at Gilbert Tract to replace sn 75H-2418 for calibration. |
| 6166 | 2023-01-13 | Lab | Calibration | Lab | Last calibration: 2022-09-15 AGC=102 SDM= DAC1= DAC2= Ambient P=100.3kPa, Tair=20.6C, Tdew=12.3C Zero Air at 1600psi, AMP CA04119 524.77 at 1275 Tdewspan=16.00 CO2 zero 0.9413 -> .9418 Offset: 1.72ppm CO2 span 1.0204 -> 1.0233 Offset: -1.91ppm H2O zero 0.8407 -> .8421 Offset: 8.4ppm H2O span 1.0338 -> 1.0314 Offset: .05ppm Notes: Set span dew point to 16.00C because the usual 20.00C > room's dew point temp. |
| 6160 | 2023-01-06 | East End Gas Analyzer CO2/H2O | Removed | Lab none | Removed from East End for calibration. Replaced by sn 75H-2669. |
| 6164 | 2022-09-15 | Lab | Calibration | Lab | Last calibration: 2022-03-02 AGC=100.4 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=20.6C, Tdew=13.4C Zero Air at 1875psi, AMP CA04119 524.77 at 1350 Tdewspan=20.00 CO2 zero 0.9412 -> .9413 Offset: .3ppm CO2 span 1.0171 -> 1.0204 Offset: -2.27ppm H2O zero 0.841 -> .8407 Offset: -1.7ppm H2O span 1.018 -> 1.0338 Offset: .01ppm Notes: Calibrated with AMP 7550 sn AIU-1039. At first, large H2O span offset (-0.32) than usual. The condenser water tube in the back was low on water. I opened the cap to let water level rise again. Afterwards, H2O span was right on (offset 0.01). |
| 6001 | 2022-09-15 | Lab none | Installed | East End Gas Analyzer CO2/H2O | Installed at East End to replace sn 0041 for calibration. |
| 5994 | 2022-09-14 | Vaira Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Vaira for calibration. Replaced by sn 0065. |
| 5723 | 2022-03-10 | Lab none | Installed | Vaira Gas Analyzer CO2/H2O | Installed at Vaira to replace sn 75H-2182 for calibration. |
| 5705 | 2022-03-02 | Lab | Calibration | Lab | Last calibration: 2021-09-29 AGC=100 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=24.3C, Tdew=9.1C Zero Air at 950psi, AMP CA04119 524.77 at 1600 Tdewspan=20.00 CO2 zero 0.9411 -> .9412 Offset: .2ppm CO2 span 1.0174 -> 1.0171 Offset: .36ppm H2O zero 0.8413 -> .841 Offset: -2.1ppm H2O span 1.0281 -> 1.0180 Offset: .21ppm Notes: |
| 5665 | 2022-01-20 | East End Gas Analyzer CO2/H2O | Removed | Lab none | Removed from East End for calibration. Replaced by sn 0065. |
| 5489 | 2021-10-07 | Lab none | Installed | East End Gas Analyzer CO2/H2O | Installed at East End to replace sn 1594 for calibration. |
| 5472 | 2021-09-29 | Lab | Calibration | Lab | Last calibration: 2021-06-07 AGC=101 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=26.7C, Tdew=11.2C Zero Air at 1475psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.9422 -> .9411 Offset: -4.00ppm CO2 span 1.0122 -> 1.0174 Offset: -3.75ppm H2O zero 0.8404 -> .8413 Offset: 5.3ppm H2O span 1.0198 -> 1.0281 Offset: -.18ppm Notes: |
| 5468 | 2021-09-23 | Hill Slough Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Hill Slough for calibration. Replaced by sn 75H-2176. |
| 5328 | 2021-06-09 | Lab none | Installed | Hill Slough Gas Analyzer CO2/H2O | Installed at Hill Slough to replace sn 75H-2180 for calibration. |
| 5313 | 2021-06-07 | Lab | Calibration | Lab | Last calibration: 2021-03-01 AGC=102 SDM= DAC1= DAC2= Ambient P=99.5kPa, Tair=20.8C, Tdew=9.2C Zero Air at 250psi, AMP CA04119 524.77 at 1750 Tdewspan=16.00 CO2 zero 0.9423 -> .9422 Offset: -.43ppm CO2 span 1.0092 -> 1.0122 Offset: -2.23ppm H2O zero 0.8385 -> .8404 Offset: 11.8ppm H2O span 1.0147 -> 1.0198 Offset: -.1ppm Notes: |
| 5303 | 2021-06-02 | Vaira Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Vaira for calibration. Replaced by sn 0065. |
| 5154 | 2021-03-02 | Lab none | Installed | Vaira Gas Analyzer CO2/H2O | Installed at Vaira to replace sn 0418 for calibration. |
| 5143 | 2021-03-01 | Lab | 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 |
| 5027 | 2020-12-09 | Sherman Wetland Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Sherman Wetland for calibration. Replaced by sn 0065. |
| 4720 | 2020-08-28 | Lab none | Installed | Sherman Wetland Gas Analyzer CO2/H2O | Installed at Sherman Wetland to replace sn 75H-2182 for calibration. |
| 4674 | 2020-08-25 | Lab | Calibration | Lab | Last calibration: 2020-05-13 AGC=101.7 SDM=0 DAC1=- DAC2=- Ambient P=100.2kPa, Tair=24.1C, Tdew=15.3C Zero Air at 650psi, AMP CA04396 408.97 at 450 Tdewspan=20.0 CO2 zero 0.9422 -> 0.9420 Offset: -0.9ppm CO2 span 1.0196 -> 1.0172 Offset: 1.23ppm H2O zero 0.838 -> 0.8403 Offset: 14ppm H2O span 1.0313 -> 1.0244 Offset: 0.2ppm Notes: Larger than usual offset in H2O zero |
| 4685 | 2020-08-21 | Bouldin Alfalfa Gas Analyzer CO2/H2O | Removed | Lab none | Removed from BA for calibration. Replaced by sn 0065. |
| 4464 | 2020-05-19 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CO2/H2O | Installed at Bouldin Alfalfa to replace sn 0035 for calibration. |
| 4448 | 2020-05-13 | Lab | 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: |
| 4384 | 2020-02-20 | West Pond Gas Analyzer CO2/H2O | Removed | Lab none | Removed from West Pond for calibration. Replaced by sn 0418. |
| 4319 | 2019-11-14 | Lab none | Installed | West Pond Gas Analyzer CO2/H2O | Installed at West Pond to replace sn 75H-2182 for calibration. |
| 4150 | 2019-11-12 | Lab none | Calibration | Lab none | Last calibration: 2019-07-24 AGC=101.4 SDM= DAC1= DAC2= Ambient P=100.7kPa, Tair=26.2C, Tdew=10.9C Zero Air at 950psi, AMP CA4396 408.97 at 700 Tdewspan=16.00 CO2 zero 0.9413 -> .9419 Offset: 2.32ppm CO2 span 1.0158 -> 1.019 Offset: -1.67ppm H2O zero 0.8363 -> .8384 Offset: 12.8ppm H2O span 1.0222 -> 1.0239 Offset: -.03ppm Notes: |
| 4132 | 2019-10-31 | Sherman Barn Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Sherman Barn for calibration. Replaced by sn 75H-2668. |
| 4029 | 2019-07-25 | Lab none | Installed | Sherman Barn Gas Analyzer CO2/H2O | Installed at SB to replace sn 75H-2669, which was brought back to the lab for calibration. |
| 4017 | 2019-07-24 | Lab none | Calibration | Lab none | Last calibration: 2019-02-11 AGC=104.1 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=26.7C, Tdew=11.7C Zero Air at 1000psi, AMP CA4396 408.97 at 800 Tdewspan=20.00 CO2 zero 0.9425 -> .9413 Offset: -4.47ppm CO2 span 1.0143 -> 1.0158 Offset: -.77ppm H2O zero 0.8349 -> .8363 Offset: 8.7ppm H2O span 1.0222 -> 1.0222 Offset: -.02ppm Notes: When the SS was 104.1, I reset it to 100.0 |
| 3977 | 2019-05-02 | East End Gas Analyzer CO2/H2O | Removed | Lab none | Removed from EE and brought back to the lab for calibration. it was replaced by sn 0035. |
| 3882 | 2019-02-12 | Lab none | Installed | East End Gas Analyzer CO2/H2O | Installed at EE to replace sn 75H-2150, which was brought back to the lab for calibration. |
| 3877 | 2019-02-11 | Lab none | Calibration | Lab none | Last calibration: 2018-10-10 AGC=104 SDM=0 DAC1=0 DAC2=0 Ambient P=101.2kPa, Tair=25.1C, Tdew=2.5C Zero Air at 1175psi, AMP Air 408.97 at 800 Tdewspan=16.00 CO2 zero 0.9412 -> .9425 Offset: 4.87ppm CO2 span 1.0145 -> 1.0143 Offset: 0.15ppm H2O zero 0.8367 -> .8349 Offset: -11.1ppm H2O span 1.0218 -> 1.0222 Offset: -.01ppm Notes: Spanned at "15.99C" in 7550 software with dewpt generator set at 16.00. |
| 3869 | 2019-01-31 | Bouldin Alfalfa Gas Analyzer CO2/H2O | Removed | Lab none | Removed from BA and brought back to the lab for calibration. It was replaced by sn 0035. |
| 3747 | 2018-10-18 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CO2/H2O | Installed on Bouldin Alfalfa to replace sn 74H-2150 for calibration. |
| 3733 | 2018-10-10 | Lab none | Calibration | Lab none | Last calibration: 2018-10-09 AGC=104 SDM=0 DAC1=0 DAC2=0 Ambient P=99.9kPa, Tair=16.7C, Tdew=11.5C Zero Air at 1400psi, AMP Air 408.97 at 1100 Tdewspan=16.00 CO2 zero 0.9413 -> .9412 Offset: -.5ppm CO2 span 1.0127 -> 1.0145 Offset: -1.57ppm H2O zero 0.8362 -> .8367 Offset: 3.3ppm H2O span 1.0328 -> 1.0218 Offset: .22ppm Notes: Re-calibrated to check Katrina's calibration yesterday, which looks good. |
| 3732 | 2018-10-09 | Lab none | Calibration | Lab none | 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. |
| 3728 | 2018-10-04 | Sherman Wetland Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Sherman Wetland for calibration. Replaced by sn 75H-2180. |
| 3552 | 2018-06-28 | Lab none | Installed | Sherman Wetland Gas Analyzer CO2/H2O | Installed at SW to replace sn 75H-2176, which was brought back to the lab for calibration. |
| 3537 | 2018-06-25 | Lab none | Calibration | Lab none | Last calibration: 2017-12-15 AGC=105.0 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=25.6C, Tdew=12.2C Zero Air at 350psi, AMP 408.97 at 1350 Tdewspan=15.99 CO2 zero 0.9415 -> 0.9414 Offset: -0.3ppm CO2 span 1.0207 -> 1.0162 Offset: 2.28ppm H2O zero 0.8372 -> 0.8375 Offset: 1.8ppm H2O span 1.0166 -> 1.0237 Offset: -0.15ppm Notes: Calibrated by Joe |
| 3386 | 2018-04-05 | Bouldin Alfalfa Gas Analyzer CO2/H2O | Removed | Lab none | Removed from BA and brought back to the lab for calibration. It was replaced by sn 0065. |
| 3277 | 2017-12-19 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CO2/H2O | Installed on Bouldin Alfalfa to replace sn 0042 for calibration |
| 3234 | 2017-12-15 | Lab none | Calibration | Lab none | 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: |
| 3217 | 2017-11-30 | Sherman Wetland Gas Analyzer CO2/H2O | Removed | Lab none | Removed from SW and brought back to the lab for calibration |
| 3039 | 2017-08-16 | Lab none | Installed | Sherman Wetland Gas Analyzer CO2/H2O | Installed at SW to replace sn 75H-2182. |
| 2964 | 2017-08-14 | Lab none | Calibration | Lab none | Last calibration: 2017-08-07 AGC=105.8 SDM=0 DAC1=0 DAC2=0 Ambient P=100.2kPa, Tair=21.7C, Tdew=12.8C Zero Air at 1100psi, AMP Air 408.97 at 2000 Tdewspan=16.00 CO2 zero 0.9419 -> 0.9418 Offset: -0.45ppm CO2 span 1.0187 -> 1.0162 Offset: 1.31ppm H2O zero 0.8382 -> 0.8392 Offset: 5.9ppm H2O span 1.0141 -> 1.0214 Offset: -0.15ppm Notes: Previous calibration on 2017-08-07 did not use updated pressure coefficients from 7550 interface, so I redid the calibration. |
| 2961 | 2017-08-07 | Lab none | Calibration | Lab none | Last calibration: 2017-08-01 AGC=105.4 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=21.5C, Tdew=13.7C Zero Air at 1150psi, AMP Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9443 -> .9419 Offset: -1.41ppm CO2 span 0.9346 -> 1.0187 Offset: -2.3ppm H2O zero 0.8578 -> .8382 Offset: .9ppm H2O span 0.9724 -> 1.0141 Offset: 0.16ppm Notes: Previous calibration did not have correct 5th-order-polynomials, which is why the offsets were huge. |
| 2941 | 2017-08-01 | Lab none | Calibration | Lab none | Last calibration: 2017-03-21 AGC=100 SDM= DAC1= DAC2= Ambient P=100.1kPa, Tair=23.2C, Tdew=19.4C Zero Air at 1200psi, LBL Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9423 -> .9443 Offset: 8.88ppm CO2 span 1.0144 -> .9346 Offset: 59.3ppm H2O zero 0.838 -> .8578 Offset: 144.2ppm H2O span 1.0219 -> .9724 Offset: 1.09ppm Notes: Reset signal strength from 113 to 100. H2O at ambient was about 900 mmol/m3, which seems higher than usual. Manually entered in existing coefficients before the calibration because did not have existing config file (usual laptop was elsewhere). Maybe I had entered the coefficients incorrectly in the database? |
| 2851 | 2017-06-23 | Bouldin Alfalfa Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Bouldin Alfalfa for calibration; replaced by 75H-0073. |
| 2678 | 2017-03-23 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CO2/H2O | Installed at Bouldin Alfalfa to replace sn 0065. |
| 2658 | 2017-03-21 | Lab none | Calibration | Lab none | 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: |
| 2652 | 2017-03-15 | West Pond Gas Analyzer CO2/H2O | Removed | Lab none | Removed from West Pond and returned to lab for calibration. It was replaced by 75H-2668. |
| 2554 | 2016-12-21 | Lab none | Installed | West Pond Gas Analyzer CO2/H2O | Installed at West Pond after calibration in the lab to replace 75H-2150 |
| 2551 | 2016-12-19 | Lab none | Calibration | Lab none | Last calibration: 2016-08-03 AGC=107.0 SDM=6 DAC1=- DAC2=- Ambient P=101.23kPa, Tair=21.56C, Tdew=-1.32C Zero Air at 300psi, God CO2 421.22 at 400 Tdewspan=16.00 CO2 zero 0.9427 -> 0.9421 Offset: -2.08ppm CO2 span 1.0156 -> 1.0156 Offset: -0.02ppm H2O zero 0.8333 -> 0.8378 Offset: 28.1ppm H2O span 1.015 -> 1.0214 Offset: -0.13ppm Notes: |
| 2538 | 2016-12-07 | Bouldin Alfalfa Gas Analyzer CO2/H2O | Removed | Lab none | Removed from Bouldin Alfalfa for calibration. Replaced by sn 0065 |
| 2418 | 2016-08-12 | Lab none | Installed | Bouldin Alfalfa Gas Analyzer CO2/H2O | Installed with the initial set up of the site. |
| 2389 | 2016-08-03 | Lab none | Calibration | Lab none | Last calibration: 2015-07-17 AGC=104 SDM= DAC1= DAC2= Ambient P=100.40kPa, Tair=23.32C, Tdew=12.40C Zero Air at 500psi, God NOAA CO2 421.22 at 500 Tdewspan=16.00 CO2 zero 0.9416 -> 0.9427 Offset: 0.16ppm CO2 span 1.0000 -> 1.0156 Offset: 8.39ppm H2O zero 0.8318 -> 0.8333 Offset: 0.23ppm H2O span 1.0039 -> 1.0150 Offset: 0.23ppm Notes: First calibration before field install - new Bouldin alfalfa site. Factory calibration (previous) used 700+ span CO2. Updated software on box AIU-1568 to version 8.0. CO2 zero and H2O zero offsets were not recorded immediately, but were filled in from memory. |