Calibration history for LI-7500 #0065

Calibration Date:2024-01-03
Last calibration: 2023-09-18
Calibrated by: Daphne Szutu
SS=100 SDM=0 DAC1=- DAC2=-
AIU sn AIU-1866 Pressure A0=58.31, A1=15.48
Ambient P=100.8kPa Tair=22.7C, Tdew=7.3C
Zero Air at 550psi, AMP CA04119 524.77ppm 700psi Tdewspan=20
CO2 zero 0.8919 -> 0.8918 Offset: -0.27ppm
CO2 span 1.024 -> 1.0255 Offset: -1.3ppm
H2O zero 0.7322 -> 0.7329 Offset: 4.9mmol/m3
H2O span 1.0226 -> 1.0238 Offset: -0.02C
Notes: Signal strength rest from 107 to 100 before calibration. Used CO2 span pt of 524.67

Calibration Date:2023-09-18
Last calibration: 2023-04-10
Calibrated by: Joe Verfaillie
SS=101 SDM=0 DAC1=- DAC2=-
AIU sn AIU-1569 Pressure A0=58.004, A1=15.479
Ambient P=100.6kPa Tair=22.4C, Tdew=14.9C
Zero Air at 1750psi, AMP CA04119 524.77ppm 1800psi Tdewspan=16
CO2 zero 0.8918 -> 0.8919 Offset: 0.2ppm
CO2 span 1.0217 -> 1.024 Offset: -1.47ppm
H2O zero 0.7295 -> 0.7322 Offset: 21.1mmol/m3
H2O span 1.0128 -> 1.0226 Offset: -0.2C
Notes: After calibration I painted some dings with white nail polish.

Calibration Date:2023-04-10
Last calibration: 2023-01-04
Calibrated by: Daphne
SS=102 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.6kPa Tair=23.7C, Tdew=10.5C
Zero Air at 1300psi, AMP CA04119 524.77ppm 1150psi Tdewspan=16
CO2 zero 0.8915 -> 0.8918 Offset: 1.72ppm
CO2 span 1.0227 -> 1.0217 Offset: 0.83ppm
H2O zero 0.7323 -> 0.7295 Offset: -20.4mmol/m3
H2O span 1.0226 -> 1.0128 Offset: 0.21C
Notes:

Calibration Date:2023-01-04
Last calibration: 2022-09-12
Calibrated by: Joe Verfaillie
SS=101 SDM=0 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.5kPa Tair=18.1C, Tdew=10.7C
Zero Air at 1650psi, AMP CA04119 524.77ppm 1250psi Tdewspan=15
CO2 zero 0.8918 -> 0.8915 Offset: -1.5ppm
CO2 span 1.0227 -> 1.0227 Offset: 0.03ppm
H2O zero 0.7316 -> 0.7323 Offset: 5.1mmol/m3
H2O span 1.0167 -> 1.0226 Offset: -0.12C
Notes:

Calibration Date:2022-09-12
Last calibration: 2022-04-08
Calibrated by: Joe Verfaillie
SS=101 SDM=0 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.4kPa Tair=22.8C, Tdew=15.2C
Zero Air at 1900psi, AMP CA04119 524.77ppm 1400psi Tdewspan=20
CO2 zero 0.8908 -> 0.8918 Offset: 4.5ppm
CO2 span 1.0198 -> 1.0227 Offset: -1.97ppm
H2O zero 0.7308 -> 0.7316 Offset: 6.7mmol/m3
H2O span 1.016 -> 1.0167 Offset: -0.01C
Notes:

Calibration Date:2022-04-08
Last calibration: 2022-01-11
Calibrated by: Daphne
SS=101 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.7kPa Tair=29.96C, Tdew=12C
Zero Air at 750psi, AMP CA04119 524.77ppm 1600psi Tdewspan=20
CO2 zero 0.8912 -> 0.8908 Offset: -1.86ppm
CO2 span 1.0205 -> 1.0198 Offset: 0.57ppm
H2O zero 0.7314 -> 0.7308 Offset: -4.2mmol/m3
H2O span 1.0259 -> 1.016 Offset: 0.22C
Notes: In the field, this sensor had a SS ~110. In the lab the SS was much more normal ~100. I'm not sure why there is a difference, as the config file should be the same.

Calibration Date:2022-01-11
Last calibration: 2021-09-08
Calibrated by: Daphne
SS=102 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=101.7kPa Tair=28.1C, Tdew=7.9C
Zero Air at 1000psi, AMP CA04119 524.77ppm 1675psi Tdewspan=20
CO2 zero 0.8911 -> 0.8912 Offset: 0.48ppm
CO2 span 1.0211 -> 1.0205 Offset: 0.53ppm
H2O zero 0.7313 -> 0.7314 Offset: 0.8mmol/m3
H2O span 1.0143 -> 1.0259 Offset: -0.27C
Notes:

Calibration Date:2021-09-08
Last calibration: 2021-06-01
Calibrated by: Carlos and Daphne
SS=102 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.3kPa Tair=27.75C, Tdew=15.5C
Zero Air at 1875psi, AMP CA04119 524.77ppm 1700psi Tdewspan=20
CO2 zero 0.8913 -> 0.8911 Offset: -1.15ppm
CO2 span 1.0201 -> 1.0211 Offset: 0.7ppm
H2O zero 0.7305 -> 0.7313 Offset: 5.7mmol/m3
H2O span 1.0158 -> 1.0143 Offset: 0.03C
Notes: Showing Carlos how to calibrate 7500s

Calibration Date:2021-06-01
Last calibration: 2021-03-15
Calibrated by: Joe Verfaillie
SS=101 SDM=0 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.4kPa Tair=21.2C, Tdew=10.6C
Zero Air at 300psi, AMP CA04119 524.77ppm 1800psi Tdewspan=16
CO2 zero 0.8914 -> 0.8913 Offset: -0.2ppm
CO2 span 1.0153 -> 1.0201 Offset: -3.27ppm
H2O zero 0.7311 -> 0.7305 Offset: -4.1mmol/m3
H2O span 1.017 -> 1.0158 Offset: 0C
Notes:

Calibration Date:2021-03-15
Last calibration: 2020-12-08
Calibrated by: Daphne
SS=102 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.8kPa Tair=24C, Tdew=1.55C
Zero Air at 400psi, AMP CA3923 474.19ppm 550psi Tdewspan=20
CO2 zero 0.8916 -> 0.8914 Offset: -1.05ppm
CO2 span 1.0213 -> 1.0153 Offset: 0.74ppm
H2O zero 0.7303 -> 0.7311 Offset: 6.2mmol/m3
H2O span 1.0165 -> 1.017 Offset: -0.02C
Notes:

Calibration Date:2020-12-08
Last calibration: 2020-08-20
Calibrated by: Daphne
SS=101 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.8kPa Tair=23.1C, Tdew=2.5C
Zero Air at 550psi, AMP CA4396 408.97ppm 300psi Tdewspan=20
CO2 zero 0.8917 -> 0.8916 Offset: -0.35ppm
CO2 span 1.0217 -> 1.0213 Offset: 0.27ppm
H2O zero 0.7297 -> 0.7303 Offset: 4.5mmol/m3
H2O span 1.0186 -> 1.0165 Offset: 0.05C
Notes:

Calibration Date:2020-08-20
Last calibration: 2020-02-04
Calibrated by: Daphne
SS=99 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.9kPa Tair=28.6C, Tdew=14.7C
Zero Air at 700psi, AMP CA4396 408.97ppm 500psi Tdewspan=20
CO2 zero 0.8916 -> 0.8917 Offset: 0.11ppm
CO2 span 1.0209 -> 1.0217 Offset: -0.39ppm
H2O zero 0.7291 -> 0.7297 Offset: 4.8mmol/m3
H2O span 1.0182 -> 1.0186 Offset: -0.01C
Notes: Air quality bad inside from wildfire smoke leaking in through windows

Calibration Date:2020-02-04
Last calibration: 2019-08-21
Calibrated by: Joe Verfaillie
SS=100 SDM=0 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=101.4kPa Tair=25.8C, Tdew=-3.3C
Zero Air at 850psi, AMP CA04396 408.97ppm 550psi Tdewspan=16
CO2 zero 0.8916 -> 0.8916 Offset: 0.15ppm
CO2 span 1.0191 -> 1.0209 Offset: -0.97ppm
H2O zero 0.7278 -> 0.7291 Offset: 9.9mmol/m3
H2O span 1.0165 -> 1.0182 Offset: -0.03C
Notes:

Calibration Date:2019-08-21
Last calibration: 2019-04-15
Calibrated by:
SS=100 SDM= DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.3kPa Tair=27.6C, Tdew=15C
Zero Air at 1000psi, AMP CO2 408.97ppm 800psi Tdewspan=20
CO2 zero 0.8911 -> 0.8916 Offset: 2.25ppm
CO2 span 1.0171 -> 1.0191 Offset: -0.97ppm
H2O zero 0.726 -> 0.7278 Offset: 14.2mmol/m3
H2O span 1.0118 -> 1.0165 Offset: -0.1C
Notes: Water zero offset a little large - maybe still acclimating from factory service and new internal chemicals. Signal Strength reset from 101.1 to 100.0

Calibration Date:2019-04-15
Last calibration: 2019-02-11
Calibrated by:
SS=99 SDM= DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.16kPa Tair=27.11C, Tdew=6.82C
Zero Air 369068 at 1100psi, AMP CA04396 408.97ppm 750psi Tdewspan=15.99
CO2 zero 0.892 -> 0.8911 Offset: -4.4ppm
CO2 span 1.0073 -> 1.0171 Offset: -5.12ppm
H2O zero 0.7263 -> 0.726 Offset: -2.4mmol/m3
H2O span 1.0104 -> 1.0118 Offset: -0.02C
Notes: First lab calibration since factory calibration. I manually typed in the new coefficients and zero/span values. I saved a config file then opened it in a text editor and changed the calibration dates, standard gas values and WX coefficient. I saved and uploaded this config. This IRGA now has the SD* temperature coefficients and its signal strength was reset at the factory. Our zeros were lower than the factory calibration so I calibrated and saved a new lab calibration config file.

Calibration Date:2019-02-11
Last calibration: 2018-09-26
Calibrated by:
SS= SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=kPa Tair=C, Tdew=C
at psi, ppm psi Tdewspan=12
CO2 zero 0.8903 -> 0.892 Offset: ppm
CO2 span 1.0184 -> 1.0073 Offset: ppm
H2O zero 0.7086 -> 0.7263 Offset: mmol/m3
H2O span 1.0155 -> 1.0104 Offset: C
Notes: CX=34338.1, WX=34091.7. Calibrated at Licor factory after source/chopper replacement.

Calibration Date:2018-09-26
Last calibration: 2018-04-04
Calibrated by:
SS=100 SDM= DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.4kPa Tair=26.6C, Tdew=13.8C
Zero Air at 1600psi, AMP Air 408.97ppm 1200psi Tdewspan=16
CO2 zero 0.8905 -> 0.8903 Offset: -1.09ppm
CO2 span 1.0231 -> 1.0184 Offset: 2.48ppm
H2O zero 0.7082 -> 0.7086 Offset: 2.7mmol/m3
H2O span 1.0185 -> 1.0155 Offset: 0.07C
Notes:

Calibration Date:2018-04-04
Last calibration: 2017-11-28
Calibrated by:
SS=100 SDM=0 DAC1=0 DAC2=0
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.8kPa Tair=22.5C, Tdew=9.3C
Zero Air at 100psi, LBL Air 408.97ppm 1700psi Tdewspan=16
CO2 zero 0.8906 -> 0.8905 Offset: -0.52ppm
CO2 span 1.0163 -> 1.0231 Offset: -3.35ppm
H2O zero 0.7083 -> 0.7082 Offset: -0.7mmol/m3
H2O span 1.0126 -> 1.0185 Offset: -0.13C
Notes: Calibrated on LI-7550 sn 674 with 8.5.0 embedded software version

Calibration Date:2017-11-28
Last calibration: 2017-05-30
Calibrated by:
SS=100 SDM=0 DAC1=0 DAC2=0
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.5kPa Tair=23C, Tdew=8.7C
Zero Air at 300psi, LBL Air 408.97ppm 1700psi Tdewspan=16
CO2 zero 0.8901 -> 0.8906 Offset: 2.12ppm
CO2 span 1.013 -> 1.0163 Offset: -1.35ppm
H2O zero 0.7087 -> 0.7083 Offset: -3mmol/m3
H2O span 1.0166 -> 1.0126 Offset: 0.08C
Notes: Calibrated on 7550 software version 8.7.5

Calibration Date:2017-05-30
Last calibration: 2016-12-06
Calibrated by:
SS=100 SDM=0 DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.7kPa Tair=19.8C, Tdew=10.1C
Zero Air at 1050psi, NOAA Air 402.69ppm 1600psi Tdewspan=16
CO2 zero 0.8899 -> 0.8901 Offset: 1.08ppm
CO2 span 1.0142 -> 1.013 Offset: -0.84ppm
H2O zero 0.7086 -> 0.7087 Offset: 0.6mmol/m3
H2O span 1.0127 -> 1.0166 Offset: -0.08C
Notes: Signal strength was 73.9 after thorough cleaning of lenses, so I reset the Signal Strength to 100%.

Calibration Date:2016-12-06
Last calibration: 2016-05-13
Calibrated by:
SS=75 SDM=6 DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.29kPa Tair=16.04C, Tdew=0.6C
Zero Air at 350psi, God CO2 421.22ppm 400psi Tdewspan=16.02
CO2 zero 0.8898 -> 0.8899 Offset: 0.36ppm
CO2 span 1.0149 -> 1.0142 Offset: 0.43ppm
H2O zero 0.7086 -> 0.7086 Offset: 0.2mmol/m3
H2O span 1.0139 -> 1.0127 Offset: 0.01C
Notes: H2O span done later in the day.

Calibration Date:2016-05-13
Last calibration: 2015-12-07
Calibrated by:
SS=75 SDM=0 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.14kPa Tair=20.14C, Tdew=8.2C
Zero Air at 600psi, God CO2 421.22ppm 500psi 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: -7.4mmol/m3
H2O span 1.0231 -> 1.0139 Offset: 0.19C
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.

Calibration Date:2015-12-07
Last calibration: 2015-04-20
Calibrated by:
SS=77 SDM=1 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.92kPa Tair=19.81C, Tdew=14.18C
Zero Air at 650psi, God CO2 421.22ppm 700psi Tdewspan=11.09
CO2 zero 0.8897 -> 0.89 Offset: 1.2ppm
CO2 span 1.0074 -> 1.0164 Offset: -4.88ppm
H2O zero 0.7055 -> 0.7097 Offset: 31.2mmol/m3
H2O span 1.0071 -> 1.0231 Offset: -0.32C
Notes:

Calibration Date:2015-04-20
Last calibration: 2014-12-22
Calibrated by:
SS=73 SDM=1 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100kPa Tair=20.13C, Tdew=12.49C
Zero Air at 850psi, God CO2 421.22ppm 1100psi Tdewspan=15.96
CO2 zero 0.8909 -> 0.8897 Offset: -5.4ppm
CO2 span 0.9835 -> 1.0074 Offset: -13.02ppm
H2O zero 0.705 -> 0.7055 Offset: 4mmol/m3
H2O span 1.1245 -> 1.0071 Offset: 2.34C
Notes: The internal chemicals were changes a few weeks ago - the old ones still looked good though. Relatively large offsets in span, H2O span offset similar to other 7500s calibrated at this time - dew point generator and Vaisala probe agreed with in 0.5C

Calibration Date:2014-12-22
Last calibration: 2014-09-09
Calibrated by:
SS=73 SDM=6 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=101.19kPa Tair=23.76C, Tdew=14.5C
Zero Air at 1000psi, God CO2 421.22ppm 1300psi Tdewspan=15.95
CO2 zero 0.8899 -> 0.8909 Offset: 4.46ppm
CO2 span 1.007 -> 0.9835 Offset: 13.26ppm
H2O zero 0.7053 -> 0.705 Offset: -2mmol/m3
H2O span 1.0101 -> 1.1245 Offset: -2.24C
Notes: Started calibration on sn AIU-0397 box. It suddenly restarted and then quit. No power light. Same cables worked on sn AIU-614 and the calibration was completed - however the large offsets are unusual and weren't seen on the 0397 box.

Calibration Date:2014-09-09
Last calibration: 2014-04-02
Calibrated by:
SS=74 SDM=1 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.35kPa Tair=22.06C, Tdew=12.61C
Zero Air at 1000psi, God CO2 421.22ppm 1300psi Tdewspan=15.25
CO2 zero 0.8899 -> 0.8899 Offset: 0ppm
CO2 span 1.0062 -> 1.007 Offset: -0.52ppm
H2O zero 0.704 -> 0.7053 Offset: 8.6mmol/m3
H2O span 0.9932 -> 1.0101 Offset: -0.34C
Notes:

Calibration Date:2014-04-02
Last calibration: 2013-09-11
Calibrated by: Joe Verfaillie
SS=73 SDM=1 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.27kPa Tair=19.36C, Tdew=6.05C
Zero Air at 1400psi, God CO2 421.22ppm 1500psi Tdewspan=15.27
CO2 zero 0.8897 -> 0.8899 Offset: 0.82ppm
CO2 span 1.0041 -> 1.0062 Offset: -0.68ppm
H2O zero 0.704 -> 0.704 Offset: 0.2mmol/m3
H2O span 0.9959 -> 0.9932 Offset: 0.06C
Notes: Calibrated by Joe

Calibration Date:2013-09-11
Last calibration: 2013-05-08
Calibrated by:
SS=72 SDM=1 DAC1=- DAC2=-
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.08kPa Tair=23.13C, Tdew=14.04C
Zero air at 1650psi, God CO2 421.22ppm 1600psi Tdewspan=15.8
CO2 zero 0.8904 -> 0.8897 Offset: -2.78ppm
CO2 span 1.0198 -> 1.0041 Offset: 8.53ppm
H2O zero 0.7022 -> 0.704 Offset: 12.5mmol/m3
H2O span 0.9726 -> 0.9959 Offset: -1.1C
Notes:

Calibration Date:2013-05-08
Last calibration: 2012-12-13
Calibrated by:
SS=16 SDM=1 DAC1=none DAC2=none
AIU sn AIU- Pressure A0=, A1=
Ambient P=101.55kPa Tair=23.16C, Tdew=10.26C
Zero air at 1700psi, God bottle 421.22ppm 1700psi Tdewspan=15.03
CO2 zero 0.8901 -> 0.8904 Offset: 0.9ppm
CO2 span 1.001 -> 1.0198 Offset: -10.07ppm
H2O zero 0.7016 -> 0.7022 Offset: 4.2mmol/m3
H2O span 0.9935 -> 0.9726 Offset: 0.44C
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.

Calibration Date:2012-12-13
Last calibration: 2012-08-09
Calibrated by:
SS=0 SDM=0 DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=0kPa Tair=0C, Tdew=0C
at 0psi, 0ppm 0psi Tdewspan=0
CO2 zero 0.8715 -> 0.8901 Offset: 0ppm
CO2 span 1.0183 -> 1.001 Offset: 0ppm
H2O zero 0.6361 -> 0.7016 Offset: 0mmol/m3
H2O span 1.0392 -> 0.9935 Offset: 0C
Notes: Factory calibration

Calibration Date:2012-08-09
Last calibration: 2012-08-07
Calibrated by:
SS=44 SDM=10 DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.25kPa Tair=22.21C, Tdew=5.88C
Zero air at 1800psi, CO2 in air 436.53ppm 450psi Tdewspan=15.08
CO2 zero 0.9473 -> 0.8715 Offset: -576ppm
CO2 span 1.3749 -> 1.0183 Offset: 225.47ppm
H2O zero 0.6596 -> 0.6361 Offset: -151mmol/m3
H2O span 1.2399 -> 1.0392 Offset: 4.02C
Notes: This was a second calibration after upgrading to a LI75000A head interface and letting new internal chemicals settle for two days. There are large offsets but the new zero/span numbers match the calibration of 8-6 before the upgrade. A second check of zeros CO2 0.8714 0.5 ppm offset, H2O 0.6364 2.3 mmol/m3 offset.

Calibration Date:2012-08-07
Last calibration: 2012-08-06
Calibrated by:
SS=38 SDM=10 DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.68kPa Tair=22.52C, Tdew=0C
Zero air at 1700psi, Co2 in air 436.53ppm 1450psi Tdewspan=15.08
CO2 zero 0.874 -> 0.9473 Offset: 294.5ppm
CO2 span 0.9973 -> 1.3749 Offset: -146.53ppm
H2O zero 0.6387 -> 0.6596 Offset: 187.9mmol/m3
H2O span 1.0898 -> 1.2399 Offset: -2.67C
Notes: Initial calibration after upgrading to a 7500A head. Calibration coefficients and zero/span values were entered by hand into the LI-7550. New internal chemicals will need to settle for at least a day.

Calibration Date:2012-08-06
Last calibration: 2012-05-18
Calibrated by:
SS=65 SDM=7 DAC1=0-1000 DAC2=10-25
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.63kPa Tair=22.07C, Tdew=8.9C
Zero air at 1700psi, CO2 in air 436.53ppm 1450psi Tdewspan=15.08
CO2 zero 0.8741 -> 0.874 Offset: -0.36ppm
CO2 span 0.9958 -> 0.9973 Offset: -0.93ppm
H2O zero 0.6415 -> 0.6387 Offset: -19.3mmol/m3
H2O span 1.0009 -> 1.0898 Offset: -1.76C
Notes: Calibration in preparation to be upgraded to a LI-7500A head.

Calibration Date:2012-06-06
Last calibration: 2012-01-16
Calibrated by:
SS=65 SDM=7 DAC1=0-1000 DAC2=10-25
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.03kPa Tair=23.26C, Tdew=10.24C
zero air at 100psi, 436.53ppm 1500psi Tdewspan=14.56
CO2 zero 0.8738 -> 0.8741 Offset: 1.2ppm
CO2 span 0.9941 -> 0.9958 Offset: -0.85ppm
H2O zero 0.6393 -> 0.6415 Offset: 0.4mmol/m3
H2O span 1.0174 -> 1.0009 Offset: -0.41C
Notes:

Calibration Date:2012-01-16
Last calibration: 2011-09-27
Calibrated by:
SS=65 SDM=7 DAC1=0-1000 DAC2=12-25
AIU sn AIU- Pressure A0=, A1=
Ambient P=100.22kPa Tair=26.28C, Tdew=-0.53C
zero air at 500psi, CO2 in air 436.53ppm 1750psi Tdewspan=14.15
CO2 zero 0.8741 -> 0.8738 Offset: -1.15ppm
CO2 span 0.9936 -> 0.9941 Offset: -0.53ppm
H2O zero 0.6341 -> 0.6393 Offset: 0mmol/m3
H2O span 0.9914 -> 1.0174 Offset: 0.49C
Notes: 5Hz band width. Internal chemicals changed on 01-12-2012.

Calibration Date:2011-09-27
Last calibration: 2011-05-24
Calibrated by:
SS=65 SDM=7 DAC1=0-1000 DAC2=10-25
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.28kPa Tair=26.94C, Tdew=10.69C
zero air at 1000psi, co2 in air 405.85ppm 1500psi Tdewspan=13.4
CO2 zero 0.8748 -> 0.8741 Offset: -2.5ppm
CO2 span 0.9939 -> 0.9936 Offset: 0.05ppm
H2O zero 0.6408 -> 0.6341 Offset: -44.6mmol/m3
H2O span 1.014 -> 0.9914 Offset: 0.55C
Notes:

Calibration Date:2011-05-24
Last calibration: 2011-04-21
Calibrated by:
SS=62 SDM=7 DAC1=0-1000 DAC2=10-25
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.67kPa Tair=23.61C, Tdew=9.06C
zero air at 1450psi, CO2 in air 597.4ppm 0psi Tdewspan=14.2
CO2 zero 0.8741 -> 0.8748 Offset: 2.56ppm
CO2 span 1.0093 -> 0.9939 Offset: 13.41ppm
H2O zero 0.7366 -> 0.6408 Offset: -7.5mmol/m3
H2O span 0.9749 -> 1.014 Offset: -0.58C
Notes:

Calibration Date:2011-01-18
Last calibration: 0000-00-00
Calibrated by: Siyan Ma
SS=66 SDM=0 DAC1= DAC2=
AIU sn AIU- Pressure A0=, A1=
Ambient P=99.48kPa Tair=28.8C, Tdew=0C
zero air at 0psi, CO2 597.4ppm 0psi Tdewspan=15.9
CO2 zero 0.6397 -> 0.6399 Offset: 0ppm
CO2 span 0.8741 -> 0.8744 Offset: 0ppm
H2O zero 0.9917 -> 0.9919 Offset: 0mmol/m3
H2O span 1 -> 1.0049 Offset: 0C
Notes: performed by Siyan