Equipment and Calibration History
History for Licor LI-7500 0976
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 6896 | 2024-10-14 | Lab none | Removed | Lab none | Recovered from the bike package. This sensor went to Burning Man in 2023 and has been sitting idle in Robert's office ever since. The Box and head have been returned to the calibration corner. |
| 6336 | 2023-07-21 | Lab none | Calibration | Lab none | Last calibration: 2022-08-10
AGC=57 SDM=7 DAC1= DAC2= AIU sn AIU-0, Presure A0=0, A1=0 Ambient P=100.2kPa, Tair=23.2C, Tdew=12.8C Zero Air at 975psi, AMP CA04119 524.77 at 950 Tdewspan=16.00 CO2 zero 0.8596 -> .8604 Offset: 4.55ppm CO2 span 1.0102 -> 1.0091 Offset: .83ppm H2O zero 0.632 -> .6284 Offset: -.59ppm H2O span 1.0138 -> 1.0207 Offset: -.15ppm Notes: Used "15.93" as the span dew point for 16.00. Copied Licor software 7500 v3.0.2 to sneakernet for this calibration. Calibrated vertical. |
| 5934 | 2022-08-10 | Lab none | Installed | Experiment | Installed on the back of Robert's e-bike for his urban heat island transect in Oakley |
| 5931 | 2022-08-10 | Lab | Calibration | Lab | Last calibration: 2017-06-12 AGC=57 SDM=7 DAC1= DAC2= Ambient P=100.7kPa, Tair=25.8C, Tdew=15.3C Zero Air at 300psi, AMP CA04119 524.77 at 1425 Tdewspan=20.00 CO2 zero 0.8597 -> .8596 Offset: -.03ppm CO2 span 1.0077 -> 1.0102 Offset: 1.82ppm H2O zero 0.6335 -> .632 Offset: -10.5ppm H2O span 1.031 -> 1.0138 Offset: .37ppm Notes: Pulled out this old IRGA for Robert's UHI transect via ebike. The calibration was surprisingly good given we haven't used this sensor in 5 years. Calibrated using a small white eePC netbook using a Licor serial cable that plugs directly into the green terminal block inside the box. I had to set the span temperature in software to 19.91 in order for dew point value to be 20.00 after pressing "Span". |
| 3109 | 2017-10-04 | East End-Temp3 Gas Analyzer CO2/H2O | Removed | Lab none | Removed with the decommissioning of Temporary Tower #3 - Boardwalk site. |
| 2882 | 2017-06-23 | Lab none | Installed | East End-Temp3 Gas Analyzer CO2/H2O | Installed at the East End Temporary Tower #3 Boardwalk location with the initial setup of the site. |
| 2821 | 2017-06-12 | Lab none | Calibration | Lab none | Last calibration: 2017-04-07 AGC=57 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.7kPa, Tair=20.3C, Tdew=7.04C Zero Air at 1500psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.8594 -> .8597 Offset: 1.39ppm CO2 span 1.0097 -> 1.0077 Offset: 1.01ppm H2O zero 0.6348 -> .6335 Offset: -.23ppm H2O span 0.9689 -> 1.0310 Offset: -1.36ppm Notes: Set span temperature in software to 15.92 in order for dew point value to be 16.00 after pressing "Span" |
| 2787 | 2017-05-24 | Tonzi-Tower | Removed | Lab none | Removed from the Tonzi Tower. Replaced by the new Licor GHG system from Ameriflux. |
| 2696 | 2017-04-10 | Lab none | Installed | Tonzi-Tower | Installed on the Tonzi Tower to replace sn 0035 for calibration |
| 2694 | 2017-04-07 | Lab none | Calibration | Lab none | Last calibration: 2016-08-15 AGC=57 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=99.9kPa, Tair=21.3C, Tdew=12.16C Zero Air at 1600psi, NOAA CO2 513.22 at 400 Tdewspan=16.01 CO2 zero 0.8594 -> 0.8594 Offset: -0.01ppm CO2 span 1.0083 -> 1.0097 Offset: -1.12ppm H2O zero 0.6317 -> 0.6348 Offset: 21.6ppm H2O span 1.0114 -> 0.9689 Offset: 0.95ppm Notes: Notes from last time said that the hood thermistor was not used and that there was a large change in H2O zero. I used hood thermistor this time and large offsets in H2O zero and span. Set span temperature to 15.94 in software for the spanned temperature to match the dewpoint generator at 16.01. |
| 2544 | 2016-12-07 | Tonzi-Floor | Removed | Lab none | Removed from the Tonzi Floor for calibration. Replaced by sn 0073. |
| 2430 | 2016-08-23 | Lab none | Installed | Tonzi-Floor | Installed on the Floor Tower to replace sn 0035 for calibration. |
| 2398 | 2016-08-15 | Lab none | Calibration | Lab none | Last calibration: 2016-02-22 AGC=58 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.24kPa, Tair=21.70C, Tdew=12.08C Zero Air at 500psi, God CO2 421.22 at 500 Tdewspan=16.00 CO2 zero 0.8594 -> 0.8594 Offset: 0.15ppm CO2 span 1.0112 -> 1.0083 Offset: 1.48ppm H2O zero 0.6332 -> 0.6317 Offset: -10.5ppm H2O span 1.0281 -> 1.0114 Offset: 0.37ppm Notes: Did note use the hood thermistor. Large change in H2O zero |
| 2263 | 2016-05-10 | Vaira Gas Analyzer CO2/H2O | Removed | Lab none | Removed from the Vaira tower for calibration. Replaced by sn 0073. |
| 2173 | 2016-02-23 | Lab none | Installed | Vaira Gas Analyzer CO2/H2O | Installed on the Vaira tower to replace sn 0041 for calibration. |
| 2203 | 2016-02-22 | Lab none | Calibration | Lab none | Last calibration: 2015-07-15 AGC=57 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.18kPa, Tair=18.28C, Tdew=9.41C Zero Air at 650psi, God CO2 421.22 at 700 Tdewspan=11.09 CO2 zero 0.8602 -> 0.8594 Offset: -6.0ppm CO2 span 1.01 -> 1.0112 Offset: -0.62ppm H2O zero 0.6307 -> 0.6332 Offset: 18.4ppm H2O span 1.0182 -> 1.0281 Offset: -0.2ppm Notes: |
| 2039 | 2015-11-03 | Vaira Gas Analyzer CO2/H2O | Removed | Lab none | Removed from the Vaira Tower for calibration. Replaced by sn 0041. |
| 1915 | 2015-07-20 | Lab none | Installed | Vaira Gas Analyzer CO2/H2O | Installed on the Vaira Tower to replace sn 0041 for calibration |
| 1905 | 2015-07-15 | Lab none | Calibration | Lab none | Last calibration: 2015-01-06 AGC=57 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.2kPa, Tair=21.92C, Tdew=15.55C Zero Air at 800psi, God CO2 421.22 at 850 Tdewspan=11.08 CO2 zero 0.8594 -> 0.8602 Offset: 3.29ppm CO2 span 1.0091 -> 1.0100 Offset: -0.62ppm H2O zero 0.6314 -> 0.6307 Offset: -5.2ppm H2O span 1.0439 -> 1.0182 Offset: 0.51ppm Notes: |
| 1799 | 2015-04-21 | Vaira Gas Analyzer CO2/H2O | Removed | Lab none | Removed from the Vaira tower for calibration. Replaced by sn 0041 |
| 1656 | 2015-01-07 | Lab none | Installed | Vaira Gas Analyzer CO2/H2O | Installed on the Vaira Tower to replace 0035 for calibration. |
| 1654 | 2015-01-06 | Lab none | Calibration | Lab none | Last calibration: 2014-09-09 AGC=58 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.21kPa, Tair=20.55C, Tdew=6.76C Zero Air at 950psi, God CO2 421.22 at 1300 Tdewspan=15.95 CO2 zero 0.8597 -> 0.8594 Offset: -1.2ppm CO2 span 1.007 -> 1.0091 Offset: -1.22ppm H2O zero 0.6281 -> 0.6314 Offset: 23.4ppm H2O span 1.0157 -> 1.0439 Offset: -0.59ppm Notes: |
| 1641 | 2014-12-23 | Tonzi-Tower | Removed | Lab none | Removed from the Tonzi Tower for calibration. Replaced by sn 1594 |
| 1552 | 2014-09-11 | Lab none | Installed | Tonzi-Tower | Installed on the Tonzi Tower tower to replace sn 0418 for calibration. |
| 1561 | 2014-09-09 | Lab none | Calibration | Lab none | Last calibration: 2014-03-12 AGC=59 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.32kPa, Tair=23.50C, Tdew=13.94C Zero Air at 1000psi, God CO2 421.22 at 1300 Tdewspan=15.25 CO2 zero 0.86 -> 0.8597 Offset: -1.06ppm CO2 span 1.0068 -> 1.0070 Offset: -0.12ppm H2O zero 0.6254 -> 0.6281 Offset: 19.4ppm H2O span 1.0088 -> 1.0157 Offset: -0.15ppm Notes: |
| 1517 | 2014-06-26 | Sherman Island Gas Analyzer CO2/H2O | Removed | Lab none | Removed from the Sherman tower for calibration. Replaced by sn 0042. |
| 1238 | 2014-03-13 | Lab none | Installed | Sherman Island Gas Analyzer CO2/H2O | Installed on the Sherman tower to replace sn 0418 for calibration. |
| 1235 | 2014-03-12 | Lab none | Calibration | Lab none | Last calibration: 2013-11-06
AGC=58 SDM=4 DAC1=0-1000 DAC2=10-25 Ambient P=100.53kPa, Tair=24.66C, Tdew=1.13C Zero Air at 1400psi, God CO2 421.22 at 1550 Tdewspan=15.17 CO2 zero 0.8597 -> 0.8600 Offset: 1.30ppm CO2 span 1.0073 -> 1.0068 Offset: 0.28ppm H2O zero 0.6279 -> 0.6254 Offset: -16.9ppm H2O span 1.0135 -> 1.0088 Offset: 0.09ppm Notes: Calibrated by Joe |
| 1226 | 2014-03-04 | Tonzi-Floor | Removed | Lab none | Removed from the Floor Tower for calibration. Replaced by sn 0042 |
| 1098 | 2013-11-07 | Lab none | Installed | Tonzi-Floor | Installed on the Tonzi Tower to replace sn 0041 for calibration. |
| 1094 | 2013-11-06 | Lab none | Calibration | Lab none | Last calibration: 2013-04-26 AGC=58 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.17kPa, Tair=23.37C, Tdew=3.35C Zero Air at 1500psi, God CO2 421.22 at 1600 Tdewspan=15.16 CO2 zero 0.859 -> 0.8597 Offset: 2.50ppm CO2 span 1.0096 -> 1.0073 Offset: 1.23ppm H2O zero 0.6313 -> 0.6279 Offset: -22.3ppm H2O span 0.9941 -> 1.0135 Offset: 0.43ppm Notes: |
| 1059 | 2013-08-21 | DWR Corn | Removed | Lab none | Removed from the Corn / Construction tower for calibration. Replaced with sn 0042 |
| 987 | 2013-04-26 | Lab none | Calibration | Lab none | Last calibration: 2013-02-26
AGC=58 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.98kPa, Tair=18.15C, Tdew=9.01C Zero air at 1700psi, CO2 in air 392.30 at 1900 Tdewspan=15.04 CO2 zero 0.8594 -> 0.8590 Offset: -1.65ppm CO2 span 1.0105 -> 1.0096 Offset: 0.45ppm H2O zero 0.629 -> 0.6313 Offset: 16.4ppm H2O span 1.0101 -> 0.9941 Offset: 0.28ppm Notes: |
| 977 | 2013-04-26 | Lab none | Installed | DWR Corn | Installed on the DWR-Corn tower to replace sn 0073 for calibration |
| 972 | 2013-04-24 | Vaira Gas Analyzer CO2/H2O | Removed | Lab none | Removed from the Vaira tower for calibration. Replaced by sn 0042 |
| 953 | 2013-02-27 | Lab none | Installed | Vaira Gas Analyzer CO2/H2O | Installed on the Vaira tower by Siyan to replace sn 0418 for calibration. |
| 937 | 2013-02-26 | Lab none | Calibration | Lab none | Last calibration: 2012-11-06 AGC=58 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.10kPa, Tair=16.57C, Tdew=7.62C Zero air at 1600psi, 2nd CO2 in air 392.30 at 1800 Tdewspan=15.05 CO2 zero 0.8599 -> 0.8594 Offset: -1.61ppm CO2 span 1.0056 -> 1.0105 Offset: -2.45ppm H2O zero 0.6233 -> 0.6290 Offset: 42.2ppm H2O span 1.0086 -> 1.0101 Offset: -0.03ppm Notes: H2O span fudged by 0.07C |
| 901 | 2013-02-06 | Tonzi-Floor | Removed | Lab none | Removed from the Floor tower for calibration. Replaced by 0042 |
| 853 | 2012-11-07 | Lab none | Installed | Tonzi-Floor | Installed on the Tonzi Floor tower to swap out sn 0073 for calibration. |
| 843 | 2012-11-06 | Lab none | Calibration | Lab none | Last calibration: 2012-07-24 AGC=61 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.36kPa, Tair=28.07C, Tdew=18.65C dry air at 1800psi, CO2 421.22 at 1600 Tdewspan=15.05 CO2 zero 0.8615 -> 0.8599 Offset: -6.55ppm CO2 span 0.9955 -> 1.0056 Offset: 6.00ppm H2O zero 0.6212 -> 0.6233 Offset: 0.43ppm H2O span 1.1478 -> 1.0086 Offset: 2.85ppm Notes: operated by Siyan Ma. The set was removed from Tonzi Tower. |
| 816 | 2012-10-24 | Tonzi-Tower | Removed | Lab none | Removed from the Tonzi Tower for calibration. Replaced by 1594 |
| 1203 | 2012-07-25 | Lab none | Installed | Tonzi-Tower | Installed on the Tonzi Tower to replace sn 1594 for calibration. |
| 683 | 2012-07-24 | Lab none | Calibration | Lab none | Last calibration: 2011-12-15 AGC=59 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.3kPa, Tair=25.6C, Tdew=11.5C dry air at 1900psi, CO2 436.53 at 1500 Tdewspan=15.0 CO2 zero 0.8586 -> 0.8615 Offset: -11.58ppm CO2 span 1.0106 -> 0.9955 Offset: 8.8ppm H2O zero 0.6298 -> 0.6212 Offset: -1.32ppm H2O span 0.9855 -> 1.1478 Offset: 3.2ppm Notes: calibrated by Siyan |
| 743 | 2012-06-06 | Tonzi-Floor | Removed | Lab none | Removed from the Tonzi Floor tower for calibration. Replaced with sn 0035. |
| 680 | 2011-12-18 | Lab none | Installed | Tonzi-Floor | Installed on the Tonzi Floor Tower to replace sn for calibration. |
| 465 | 2011-12-15 | Lab none | Calibration | Lab none | Last calibration: 2011-08-24
AGC=58 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.04kPa, Tair=22.44C, Tdew=5.78C zero air at 700psi, CO2 236.53 at 1900 Tdewspan=13.5 CO2 zero 0.8596 -> 0.8586 Offset: -2.21ppm CO2 span 1.01 -> 1.0106 Offset: -3ppm H2O zero 0.6276 -> 0.6298 Offset: -1.82ppm H2O span 0.9824 -> 0.9855 Offset: 0.2ppm Notes: operated by Siyan Ma |
| 1210 | 2011-12-14 | Sherman Island Gas Analyzer CO2/H2O | Removed | Lab none | Removed from the Sherman tower for calibration. Replaced by sn 0042, |
| 405 | 2011-08-25 | Lab none | Installed | Sherman Island Gas Analyzer CO2/H2O | Installed on Sherman Tower to replace sn 0042 for calibration. |
| 673 | 2011-08-24 | Lab none | Calibration | Lab none | Last calibration: 2011-04-11 AGC=56 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.2kPa, Tair=25.82C, Tdew=16C ZeroAir at 900psi, CO2 in air 405.85 at 1800 Tdewspan=19.4 CO2 zero 0.8536 -> 0.8596 Offset: -21.2ppm CO2 span 1.0022 -> 1.01 Offset: -4.35ppm H2O zero 0.6287 -> 0.6276 Offset: -7.5ppm H2O span 1.0061 -> 0.9824 Offset: 0.65ppm Notes: |
| 633 | 2011-03-30 | Tonzi-Tower | Removed | Lab none | Swapped off on the Tonzi Tower for calibration. Replaced by sn 0041. |
| 271 | 2011-01-05 | Lab none | Installed | Tonzi-Tower | This sensor was installed on the Tonzi Tower after laboratory calibration. sn 0065 was swapped off. |
| 672 | 2011-01-03 | Lab none | Calibration | Lab none | Last calibration: 0000-00-00 AGC=57 SDM=0 DAC1=0-1000 DAC2=10-25 Ambient P=100.6kPa, Tair=20.3C, Tdew=0C zero air at 0psi, CO2 597.4 at 0 Tdewspan=11.2 CO2 zero 0 -> 0.8594 Offset: 5.6ppm CO2 span 0 -> 1.0077 Offset: 3.9ppm H2O zero 0 -> 0.6298 Offset: -0.53ppm H2O span 0 -> 1.0139 Offset: 2.04ppm Notes: performed by Siyan |
| 254 | 2010-11-18 | Sherman Island Gas Analyzer CO2/H2O | Removed | Lab none | This IRGA was removed from the Sherman Tower for calibration. |
| 184 | 2010-08-17 | Lab none | Installed | Sherman Island Gas Analyzer CO2/H2O | Installed of the Sherman tower so that sn 0041 could be removed for calibration. |
| 178 | 2010-08-16 | Lab none | Calibration | Lab none | Last cal 2010-05-12, SMD 7 DAC1 H2O 0-1000 DAC2 CO2 10-25
AGC = 59%, T = 23.06C, P = 100.09kPa, Td = 14.32C Zero Air = 0.0 1800psi CO2 = 597.4ppm <20psi, Td = 10.9C CO2 zero = 0.8588-> 0.8585, offset +1.30ppm CO2 span = 1.0061-> 1.0025, offset +3.0ppm H2O zero = 0.6326-> 0.6306, offset -0.37mmol/mol H2O span = 1.1505-> 1.0136, offset +2.7C |
| 114 | 2010-05-13 | Tonzi-Tower | Removed | Lab none | Swapped off Tonzi tower for calibration. |
| 4011 | 2009-01-08 | Lab none | Installed | Tonzi-Floor | Installed on the Tonzi Floor to replace sn 0042 for calibration |