Equipment and Calibration

Equipment history at Sherman Island

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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
2007-12-18	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Sherman Island to replace sn 0042 for calibration. Analog output 11-29
2009-12-03	0035	LI-7500A	Calibration	Lab	AGC = 58, Pressure = 100.8kPa, Temperature = 20.2C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Note: Scrubs on N2 tank causing error - removed. Last calibration Aug 26, 2009 Last CO2 zero = 0.9344, span = 1.0120 Last H2O zero = 0.7295, span = 0.9425 New CO2 zero = 0.9342, span = 1.0118 New H2O zero = 0.7335, span = 0.9722 Configuration downloaded and saved
2009-01-29	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Sherman tower for calibration.
2009-12-03	0035	LI-7500A	Calibration	Lab	AGC = 58, Pressure = 100.8kPa, Temperature = 20.2C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Note: Scrubs on N2 tank causing error - removed. Last calibration Aug 26, 2009 Last CO2 zero = 0.9344, span = 1.0120 Last H2O zero = 0.7295, span = 0.9425 New CO2 zero = 0.9342, span = 1.0118 New H2O zero = 0.7335, span = 0.9722 Configuration downloaded and saved
2012-08-09	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0418 for calibration.
2013-02-04	0035	LI-7500A	Calibration	Lab	Last calibration: 2012-08-07 AGC=48 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.2kPa, Tair=18.9C, Tdew=6.6C dry air at 1500psi, CO2 421.22 at 1700 Tdewspan=15.04 CO2 zero 0.9388 -> 0.9417 Offset: 12.82ppm CO2 span 1.0176 -> 1.0150 Offset: 0.56ppm H2O zero 0.8994 -> 0.8846 Offset: -1.77ppm H2O span 0.9957 -> Offset: 4.24ppm Notes: all coefficients were zero before calibration. Joe helped to reset them successfully.
2013-01-30	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. Replaced by sn 0041
2013-02-04	0035	LI-7500A	Calibration	Lab	Last calibration: 2012-08-07 AGC=48 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.2kPa, Tair=18.9C, Tdew=6.6C dry air at 1500psi, CO2 421.22 at 1700 Tdewspan=15.04 CO2 zero 0.9388 -> 0.9417 Offset: 12.82ppm CO2 span 1.0176 -> 1.0150 Offset: 0.56ppm H2O zero 0.8994 -> 0.8846 Offset: -1.77ppm H2O span 0.9957 -> Offset: 4.24ppm Notes: all coefficients were zero before calibration. Joe helped to reset them successfully.
2013-04-26	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to swap out sn 0041 for calibration
2013-11-06	0035	LI-7500A	Calibration	Lab	Last calibration: 2013-04-23 AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.35kPa, Tair=22.84C, Tdew=4.69C Zero Air at 1500psi, God CO2 421.22 at 1600 Tdewspan=15.16 CO2 zero 0.9386 -> 0.9393 Offset: 2.95ppm CO2 span 1.0156 -> 1.0154 Offset: 0.03ppm H2O zero 0.8981 -> 0.8904 Offset: -41.3ppm H2O span 0.9842 -> 0.9744 Offset: 0.17ppm Notes:
2013-08-21	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Swapped of the Sherman tower for calibration. Replaced by sn 1594
2013-11-06	0035	LI-7500A	Calibration	Lab	Last calibration: 2013-04-23 AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.35kPa, Tair=22.84C, Tdew=4.69C Zero Air at 1500psi, God CO2 421.22 at 1600 Tdewspan=15.16 CO2 zero 0.9386 -> 0.9393 Offset: 2.95ppm CO2 span 1.0156 -> 1.0154 Offset: 0.03ppm H2O zero 0.8981 -> 0.8904 Offset: -41.3ppm H2O span 0.9842 -> 0.9744 Offset: 0.17ppm Notes:
2010-05-28	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Sherman tower after fresh lab calibration.
2011-08-24	0041	LI-7500A	Calibration	Lab	Last calibration: 2011-02-24 AGC=53 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.29kPa, Tair=26.05C, Tdew=14.46C Zero Air at 900psi, CO2 in Air 405.85 at 1800 Tdewspan=19.4 CO2 zero 1.002 -> 1.0011 Offset: -2.9ppm CO2 span 1.0025 -> 1.006 Offset: -1.81ppm H2O zero 0.817 -> 0.8201 Offset: 18.3ppm H2O span 0.9984 -> 0.9714 Offset: 0.74ppm Notes: Performed by Joe and Sara
2010-08-17	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman Tower for calibration in the lab.
2011-08-24	0041	LI-7500A	Calibration	Lab	Last calibration: 2011-02-24 AGC=53 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.29kPa, Tair=26.05C, Tdew=14.46C Zero Air at 900psi, CO2 in Air 405.85 at 1800 Tdewspan=19.4 CO2 zero 1.002 -> 1.0011 Offset: -2.9ppm CO2 span 1.0025 -> 1.006 Offset: -1.81ppm H2O zero 0.817 -> 0.8201 Offset: 18.3ppm H2O span 0.9984 -> 0.9714 Offset: 0.74ppm Notes: Performed by Joe and Sara
2012-03-06	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed to replace the malfunctioning LI-7500 removed last week.
2012-07-24	0041	LI-7500A	Calibration	Lab	Last calibration: 2011-08-24 AGC=52 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 1.0011 -> 1.0008 Offset: 0.51ppm CO2 span 1.006 -> 1.0084 Offset: 0.3ppm H2O zero 0.8201 -> 0.8201 Offset: -0.33ppm H2O span 0.9714 -> 0.9947 Offset: 3.35ppm Notes: calibrated by Siyan
2012-06-07	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Swapped off the Sherman tower for calibration. Replaced by sn 0418.
2012-07-24	0041	LI-7500A	Calibration	Lab	Last calibration: 2011-08-24 AGC=52 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 1.0011 -> 1.0008 Offset: 0.51ppm CO2 span 1.006 -> 1.0084 Offset: 0.3ppm H2O zero 0.8201 -> 0.8201 Offset: -0.33ppm H2O span 0.9714 -> 0.9947 Offset: 3.35ppm Notes: calibrated by Siyan
2013-01-30	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0035 for calibration.
2013-07-09	0041	LI-7500A	Calibration	Lab	Last calibration: 2013-01-29 AGC=52 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.55kPa, Tair=21.92C, Tdew=11.81C Zero Air at 1650psi, God CO2 421.22 at 1600 Tdewspan=15.19 CO2 zero 1.0012 -> 1.0010 Offset: -0.55ppm CO2 span 1.008 -> 1.0086 Offset: -0.32ppm H2O zero 0.822 -> 0.8217 Offset: -1.5ppm H2O span 0.998 -> 1.0000 Offset: -0.04ppm Notes:
2013-04-26	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. Replaced by sn 0035
2013-07-09	0041	LI-7500A	Calibration	Lab	Last calibration: 2013-01-29 AGC=52 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.55kPa, Tair=21.92C, Tdew=11.81C Zero Air at 1650psi, God CO2 421.22 at 1600 Tdewspan=15.19 CO2 zero 1.0012 -> 1.0010 Offset: -0.55ppm CO2 span 1.008 -> 1.0086 Offset: -0.32ppm H2O zero 0.822 -> 0.8217 Offset: -1.5ppm H2O span 0.998 -> 1.0000 Offset: -0.04ppm Notes:
2007-04-05	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed with the initial setup of the site.
2009-12-08	0042	LI-7500A	Calibration	Lab	Embedded software updated to v3.0.1 Last calibration Sept 15 2009 AGC=67, Pressure=101.01kPa Temperature=17.3C CO2 span=597.4ppm, H2O span=14.5C Precal CO2 zero=0.9609, span=0.9818 Postcal CO2 zero=0.9615, span=0.9897 Precal H2O zero=0.7855, span=1.0086 Postcal H2O zero=0.7844, span=0.9773 CO2 zero off by 2.2ppm, span off by ~7ppm H2O span off by ~0.7C
2007-12-18	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Sherman Island for calibration. Replaced by sn 0035.
2009-12-08	0042	LI-7500A	Calibration	Lab	Embedded software updated to v3.0.1 Last calibration Sept 15 2009 AGC=67, Pressure=101.01kPa Temperature=17.3C CO2 span=597.4ppm, H2O span=14.5C Precal CO2 zero=0.9609, span=0.9818 Postcal CO2 zero=0.9615, span=0.9897 Precal H2O zero=0.7855, span=1.0086 Postcal H2O zero=0.7844, span=0.9773 CO2 zero off by 2.2ppm, span off by ~7ppm H2O span off by ~0.7C
2009-01-29	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower after lab calibration.
2009-12-08	0042	LI-7500A	Calibration	Lab	Embedded software updated to v3.0.1 Last calibration Sept 15 2009 AGC=67, Pressure=101.01kPa Temperature=17.3C CO2 span=597.4ppm, H2O span=14.5C Precal CO2 zero=0.9609, span=0.9818 Postcal CO2 zero=0.9615, span=0.9897 Precal H2O zero=0.7855, span=1.0086 Postcal H2O zero=0.7844, span=0.9773 CO2 zero off by 2.2ppm, span off by ~7ppm H2O span off by ~0.7C
2009-12-04	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from permanent tower for calibration.
2009-12-08	0042	LI-7500A	Calibration	Lab	Embedded software updated to v3.0.1 Last calibration Sept 15 2009 AGC=67, Pressure=101.01kPa Temperature=17.3C CO2 span=597.4ppm, H2O span=14.5C Precal CO2 zero=0.9609, span=0.9818 Postcal CO2 zero=0.9615, span=0.9897 Precal H2O zero=0.7855, span=1.0086 Postcal H2O zero=0.7844, span=0.9773 CO2 zero off by 2.2ppm, span off by ~7ppm H2O span off by ~0.7C
2011-06-21	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Swapped onto the to tower to replace sn 0073 for calibration
2011-09-27	0042	LI-7500A	Calibration	Lab	Last calibration: 2011-06-15 AGC=75 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.8kPa Tair=25.14C, Tdew=11.46C zero air at 1000psi, CO2 in air 405.85ppm 1500psi Tdewspan=13.4 CO2 zero 0.9587 -> 0.9592 Offset: 1.72ppm CO2 span 0.9796 -> 0.9758 Offset: 2.1ppm H2O zero 0.7886 -> 0.7858 Offset: -20mmol/m3 H2O span 0.9667 -> 0.9532 Offset: 0.37C Notes: The AGC values seemed high at between 70 and 75%. The internal chemicals were changed and allowed to run overnight.
2011-08-25	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman Tower for calibration. Replaced with sn 0976.
2011-09-27	0042	LI-7500A	Calibration	Lab	Last calibration: 2011-06-15 AGC=75 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.8kPa Tair=25.14C, Tdew=11.46C zero air at 1000psi, CO2 in air 405.85ppm 1500psi Tdewspan=13.4 CO2 zero 0.9587 -> 0.9592 Offset: 1.72ppm CO2 span 0.9796 -> 0.9758 Offset: 2.1ppm H2O zero 0.7886 -> 0.7858 Offset: -20mmol/m3 H2O span 0.9667 -> 0.9532 Offset: 0.37C Notes: The AGC values seemed high at between 70 and 75%. The internal chemicals were changed and allowed to run overnight.
2011-12-14	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0976 for calibration.
2012-05-16	0042	LI-7500A	Calibration	Lab	Last calibration: 2011-12-13 AGC=54 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.19kPa, Tair=23.04C, Tdew=8.4C dry air at 16psi, CO2 436.53 at 1500 Tdewspan=13.7 CO2 zero 0.9597 -> 0.9512 Offset: ppm CO2 span 0.984 -> 0.8486 Offset: ppm H2O zero 0.7828 -> 1.0024 Offset: ppm H2O span 0.9341 -> 0.9990 Offset: ppm Notes: recently fixed by Li-cor double check in the lab conditions no calibration applied yet
2012-02-28	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	The LI-7500 sn 0042 was malfunctioning - CO2 values were 5.85, and water was above 40,000. We pulled it from the field, and it was not working in the lab either
2012-05-16	0042	LI-7500A	Calibration	Lab	Last calibration: 2011-12-13 AGC=54 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.19kPa, Tair=23.04C, Tdew=8.4C dry air at 16psi, CO2 436.53 at 1500 Tdewspan=13.7 CO2 zero 0.9597 -> 0.9512 Offset: ppm CO2 span 0.984 -> 0.8486 Offset: ppm H2O zero 0.7828 -> 1.0024 Offset: ppm H2O span 0.9341 -> 0.9990 Offset: ppm Notes: recently fixed by Li-cor double check in the lab conditions no calibration applied yet
2014-06-26	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0976 for calibration.
2014-10-02	0042	LI-7500A	Calibration	Lab	Last calibration: 2014-06-24 AGC=54 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.76kPa, Tair=23.23C, Tdew=14.05C Zero air at 1000psi, God CO2 421.22 at 1300 Tdewspan=15.81 CO2 zero 0.9506 -> 0.9500 Offset: -2.15ppm CO2 span 1.0074 -> 0.9989 Offset: 4.78ppm H2O zero 0.8506 -> 0.8505 Offset: -0.3ppm H2O span 0.996 -> 0.9819 Offset: 0.3ppm Notes: Exterior serial connector doesn't work. This calibration was done using the thermistor in the box and not on the calibration tube.
2014-09-25	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. Replaced by sn 0418.
2014-10-02	0042	LI-7500A	Calibration	Lab	Last calibration: 2014-06-24 AGC=54 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.76kPa, Tair=23.23C, Tdew=14.05C Zero air at 1000psi, God CO2 421.22 at 1300 Tdewspan=15.81 CO2 zero 0.9506 -> 0.9500 Offset: -2.15ppm CO2 span 1.0074 -> 0.9989 Offset: 4.78ppm H2O zero 0.8506 -> 0.8505 Offset: -0.3ppm H2O span 0.996 -> 0.9819 Offset: 0.3ppm Notes: Exterior serial connector doesn't work. This calibration was done using the thermistor in the box and not on the calibration tube.
2015-01-07	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman Tower to replace sn 0418 for calibration.
2015-07-15	0042	LI-7500A	Calibration	Lab	Last calibration: 2015-01-06 AGC=53 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.34kPa, Tair=21.50C, Tdew=14.82C Zero Air at 800psi, God CO2 421.22 at 850 Tdewspan=11.08 CO2 zero 0.9504 -> 0.9503 Offset: -0.50ppm CO2 span 1.0086 -> 1.0097 Offset: -0.62ppm H2O zero 0.851 -> 0.8526 Offset: 9.9ppm H2O span 1 -> 1.0010 Offset: -0.02ppm Notes: External serial port flakey
2015-05-12	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed with the decommissioning of the Sherman Cow Pasture site.
2015-07-15	0042	LI-7500A	Calibration	Lab	Last calibration: 2015-01-06 AGC=53 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.34kPa, Tair=21.50C, Tdew=14.82C Zero Air at 800psi, God CO2 421.22 at 850 Tdewspan=11.08 CO2 zero 0.9504 -> 0.9503 Offset: -0.50ppm CO2 span 1.0086 -> 1.0097 Offset: -0.62ppm H2O zero 0.851 -> 0.8526 Offset: 9.9ppm H2O span 1 -> 1.0010 Offset: -0.02ppm Notes: External serial port flakey
2009-12-04	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Freshly calibrated. Installed on permanent tower.
2011-01-18	0065	LI-7500A	Calibration	Lab	Last calibration: 0000-00-00 AGC=66 SDM=0 DAC1= DAC2= Ambient P=99.48kPa, Tair=28.8C, Tdew=0C zero air at 0psi, CO2 597.4 at 0 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: 0ppm H2O span 1 -> 1.0049 Offset: 0ppm Notes: performed by Siyan
2010-03-18	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	This was LI7500 was removed from the Sherman tower for calibartion.
2011-01-18	0065	LI-7500A	Calibration	Lab	Last calibration: 0000-00-00 AGC=66 SDM=0 DAC1= DAC2= Ambient P=99.48kPa, Tair=28.8C, Tdew=0C zero air at 0psi, CO2 597.4 at 0 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: 0ppm H2O span 1 -> 1.0049 Offset: 0ppm Notes: performed by Siyan
2010-03-18	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	This LI7500 was installed at Sherman. No problems.
2010-10-13	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.64kPa, 25.68C, 60% AGC 11.48C Td Zero Air 0.0 @ 1750psi, CO2 tank 597.4ppm @ 200psi Last cal 8/13/2010 CO2 zero 0.9580 -> 0.9588 offset +2.7ppm CO2 span 0.9976 -> 0.9974 offset +0.0ppm H2O zero 0.7271 -> 0.7319 offset +30.2mmol/m3 H2O span 0.9860 -> 0.9821 offset SDM address: 7, DAC 1: 0-1000, DAC 2: 10-25 Note: Again, using scrubs on the zero air seemed to introduce more H2O to the system than running without the scrubs. I did not scrub the zero air for this calibration
2010-05-28	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	This analyzer was removed from the Sherman tower for calibration.
2010-10-13	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.64kPa, 25.68C, 60% AGC 11.48C Td Zero Air 0.0 @ 1750psi, CO2 tank 597.4ppm @ 200psi Last cal 8/13/2010 CO2 zero 0.9580 -> 0.9588 offset +2.7ppm CO2 span 0.9976 -> 0.9974 offset +0.0ppm H2O zero 0.7271 -> 0.7319 offset +30.2mmol/m3 H2O span 0.9860 -> 0.9821 offset SDM address: 7, DAC 1: 0-1000, DAC 2: 10-25 Note: Again, using scrubs on the zero air seemed to introduce more H2O to the system than running without the scrubs. I did not scrub the zero air for this calibration
2011-02-08	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	This LI7500 was installed on the Sherman Island tower. sn 0418 was removed for calibration.
2011-07-05	0073	LI-7500A	Calibration	Lab	Last calibration: 2011-02-08 AGC=60 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=99.96kPa, Tair=24.79C, Tdew=15.45C zeri aur at 1320psi, CO2 597.4 at 40 Tdewspan=16.8 CO2 zero 0.9581 -> 0.9588 Offset: 2.29ppm CO2 span 0.9979 -> 1 Offset: 1.51ppm H2O zero 0.7303 -> 0.74 Offset: 1.62ppm H2O span 1.0362 -> 1.0033 Offset: 0.7ppm Notes: performed by Siyan, installed at Vaira on July 6, 2011
2011-06-21	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Swapped off of the tower for calibration, replaced by sn 1594
2011-07-05	0073	LI-7500A	Calibration	Lab	Last calibration: 2011-02-08 AGC=60 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=99.96kPa, Tair=24.79C, Tdew=15.45C zeri aur at 1320psi, CO2 597.4 at 40 Tdewspan=16.8 CO2 zero 0.9581 -> 0.9588 Offset: 2.29ppm CO2 span 0.9979 -> 1 Offset: 1.51ppm H2O zero 0.7303 -> 0.74 Offset: 1.62ppm H2O span 1.0362 -> 1.0033 Offset: 0.7ppm Notes: performed by Siyan, installed at Vaira on July 6, 2011
2010-11-18	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	This IRGA was installed at Sherman Island to replace sn 0976 for calibration.
2011-10-17	0418	LI-7500A	Calibration	Lab	Last calibration: 2011-07-05 AGC=61 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.48kPa, Tair=30.7C, Tdew=16.56C dry air at 700psi, CO2 2000 at 2000 Tdewspan=18.3 CO2 zero 0.9588 -> 0.9584 Offset: -1.13ppm CO2 span 1 -> 1.0022 Offset: 1.08ppm H2O zero 0.74 -> 0.7390 Offset: -0.07ppm H2O span 1.0033 -> 0.9873 Offset: 0.4ppm Notes: calibrated by Siyan
2011-02-08	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	This LI7500 was removed from the Sherman Island tower for calibration. sn 0073 was installed.
2011-10-17	0418	LI-7500A	Calibration	Lab	Last calibration: 2011-07-05 AGC=61 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.48kPa, Tair=30.7C, Tdew=16.56C dry air at 700psi, CO2 2000 at 2000 Tdewspan=18.3 CO2 zero 0.9588 -> 0.9584 Offset: -1.13ppm CO2 span 1 -> 1.0022 Offset: 1.08ppm H2O zero 0.74 -> 0.7390 Offset: -0.07ppm H2O span 1.0033 -> 0.9873 Offset: 0.4ppm Notes: calibrated by Siyan
2012-06-07	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0041 for calibration.
2012-10-23	0418	LI-7500A	Calibration	Lab	Last calibration: 2012-06-06 AGC=48 SDM=0 DAC1=0-1000 DAC2=10-25 Ambient P=100.79kPa, Tair=22.2C, Tdew=0C dry air at 1800psi, CO2 398.79 at 1600 Tdewspan=15.07 CO2 zero 0.9011 -> 0.9011 Offset: -0.16ppm CO2 span 1.0032 -> 1.0085 Offset: -2.3ppm H2O zero 0.8456 -> 0.8516 Offset: 0.03ppm H2O span 0.9835 -> 1 Offset: 0.27ppm Notes: operated by Siyan Ma
2012-08-09	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. Replaced by sn 0035.
2012-10-23	0418	LI-7500A	Calibration	Lab	Last calibration: 2012-06-06 AGC=48 SDM=0 DAC1=0-1000 DAC2=10-25 Ambient P=100.79kPa, Tair=22.2C, Tdew=0C dry air at 1800psi, CO2 398.79 at 1600 Tdewspan=15.07 CO2 zero 0.9011 -> 0.9011 Offset: -0.16ppm CO2 span 1.0032 -> 1.0085 Offset: -2.3ppm H2O zero 0.8456 -> 0.8516 Offset: 0.03ppm H2O span 0.9835 -> 1 Offset: 0.27ppm Notes: operated by Siyan Ma
2013-12-06	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 1594 for calibration.
2014-06-10	0418	LI-7500A	Calibration	Lab	Last calibration: 2013-12-05 AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.10kPa, Tair=22.66C, Tdew=12.27C Zero Air at 1200psi, God CO2 421.22 at 1500 Tdewspan=15.26 CO2 zero 0.9014 -> 0.9015 Offset: 0.6ppm CO2 span 1.0016 -> 1.0058 Offset: -2.42ppm H2O zero 0.8521 -> 0.8533 Offset: 6.8ppm H2O span 0.9806 -> Offset: -0.37ppm Notes:
2014-03-13	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. Replaced by sn 0976.
2014-06-10	0418	LI-7500A	Calibration	Lab	Last calibration: 2013-12-05 AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.10kPa, Tair=22.66C, Tdew=12.27C Zero Air at 1200psi, God CO2 421.22 at 1500 Tdewspan=15.26 CO2 zero 0.9014 -> 0.9015 Offset: 0.6ppm CO2 span 1.0016 -> 1.0058 Offset: -2.42ppm H2O zero 0.8521 -> 0.8533 Offset: 6.8ppm H2O span 0.9806 -> Offset: -0.37ppm Notes:
2014-09-25	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0042 for calibration.
2015-01-13	0418	LI-7500A	Calibration	Lab	Last calibration: 2014-09-23 AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.42kPa, Tair=25.54C, Tdew=10.08C Zero Air at 900psi, God CO2 421.22 at 1300 Tdewspan=15.95 CO2 zero 0.9013 -> 0.9011 Offset: -.63ppm CO2 span 0.9992 -> 1.0015 Offset: -1.32ppm H2O zero 0.851 -> 0.8534 Offset: 14.5ppm H2O span 0.9823 -> 0.9867 Offset: -0.1ppm Notes:
2015-01-07	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman Tower for calibration. Replaced by sn 0042.
2015-01-13	0418	LI-7500A	Calibration	Lab	Last calibration: 2014-09-23 AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.42kPa, Tair=25.54C, Tdew=10.08C Zero Air at 900psi, God CO2 421.22 at 1300 Tdewspan=15.95 CO2 zero 0.9013 -> 0.9011 Offset: -.63ppm CO2 span 0.9992 -> 1.0015 Offset: -1.32ppm H2O zero 0.851 -> 0.8534 Offset: 14.5ppm H2O span 0.9823 -> 0.9867 Offset: -0.1ppm Notes:
2009-03-11	05-0010	FMA RMT-200	Removed		Removed from the Sherman tower for mirror cleaning.
2009-06-09	05-0010	FMA RMT-200	Calibration		Notes from 7-9-2010 say that the LGR reports its last calibration was June 9th.
2009-07-09	05-0010	FMA RMT-200	Calibration		Calibrated with 1.976ppm CH4 secondary standard in the field. Pre-cal LGR read 1.994ppm.
2009-08-06	05-0010	FMA RMT-200	Removed		Removed from the box at Sherman Island for mirror cleaning because the ring time was 10.8usec.
2009-09-17	05-0010	FMA RMT-200	Installed		Installed. Calibrated in field with 1.976ppm CH4 secondary standard. Pre-cal LGR read 1.933ppm at 19.58C, 156.38Torr, 18.178usec.
2009-11-19	05-0010	FMA RMT-200	Calibration		Calibrated with 1.976ppm CH4 secondary standard in the field. Pre-cal LGR read 2.014ppm. Last calibration was 9-17-2009
2009-12-28	05-0010	FMA RMT-200	Calibration		Calibration checked with 1.976ppm CH4 secondary standard in the field. LGR read 1.976ppm at 17.79C and 58.5Torr. No calibration necessary.
2010-01-14	05-0010	FMA RMT-200	Calibration		Calibrated with 1.976ppm CH4 secondary standard in the field. Pre-cal the LGR read 1.981ppm at 19.67C, 59.08Torr, 14.747usec.
2010-03-04	05-0010	FMA RMT-200	Removed		This analyzer was removed from Sherman for maintenance - low pressure on internal pump. It is now in the lab.
2010-04-21	05-0010	FMA RMT-200	Installed		This analyzer is fresh from factory service. I installed it to replace sn 08-0114 suffering from low pressure.
2012-08-23	05-0010	FMA RMT-200	Installed		Installed in the box at Sherman by Cove. This is to replace sn 08-0114 that has had low pressure when running on the internal pump.
2013-03-14	05-0010	FMA RMT-200	Removed		Removed from the Sherman Island box by Cove due to low pressure in the low flow mode. Replaced by sn 08-0114.
2013-06-18	05-0010	FMA RMT-200	Installed		Installed at Sherman by Cove to replace sn 08-0114 that was refusing to boot.
2014-01-10	05-0010	FMA RMT-200	Removed		Removed from the box at Sherman due to low pressure readings. Replaced by sn 08-0114
2009-03-11	08-0114	FMA RMT-200	Installed		Installed at Sherman tower to replace other LGR for mirror cleaning.
2009-08-06	08-0114	FMA RMT-200	Calibration		Calibrated in the field with 1.976ppm CH4 secondary standard. Ring time was 15.5usec.
2009-08-06	08-0114	FMA RMT-200	Moved	Gas Analyzer CH4 Closed-path	Removed from Rice and replaced with Frank's FGGA analyzer (sn 09-0012). Installed to replace LGR sn 05-0010 for maintenance.
2009-08-20	08-0114	FMA RMT-200	Removed		Removed from Sherman Island because seized scroll pump blew fuse in the AC power socket on the back on the LGR.
2009-08-25	08-0114	FMA RMT-200	Installed		Installed at Sherman Island after the LGR was removed to check problems caused by a blown fues. The scroll pump blew the system main fuse but I didn't know that and removed the LGR to check in the lab.
2009-08-25	08-0114	FMA RMT-200	Calibration		calibrated in the field with 1.976ppm CH4 secondary standard. Pre-cal LGR read 1.990ppm at 23.46C and 15.22usec. Last cal was 8-6-2009
2009-09-17	08-0114	FMA RMT-200	Removed		LGR #2 had low pressure (128Torr) in slow flow and dirty mirrors (10usec ring time). Removed for maintenance. Replaced by LGR #1 sn 05-0010
2010-03-04	08-0114	FMA RMT-200	Installed		This analyzer was installed at Sherman so that the existing analyzer could be returned to the lab for maintenance. No problems on install.
2010-04-21	08-0114	FMA RMT-200	Removed		Removed from Sherman becuase of low pressure in slow flow mode.
2010-07-29	08-0114	FMA RMT-200	Installed		Installed in the box at Sherman Island to replace the other FMA for mirror cleaning.
2010-08-06	08-0114	FMA RMT-200	Calibration		Last calibrated June 2, 2010. Calibrated with 1.8978ppm CH4 God bottle. Before calibration: 1.908+-0.002ppm. After calibration: 1.898+-0.001ppm.
2012-05-02	08-0114	FMA RMT-200	Installed		Installed in the box at sherman to replace the LI7700. Running on the diaphragm pump.
2012-08-23	08-0114	FMA RMT-200	Removed		Removed from the box at Sherman by Cove. This analyzer has had low pressure in slow flow mode. It was replace by LGR FMA sn 05-0010.
2013-03-14	08-0114	FMA RMT-200	Installed		Installed in the Sherman Island box by Cove to replace sn 05-0010. 05-0010 was removed due to low pressure in low flow mode.
2013-06-18	08-0114	FMA RMT-200	Removed		Removed from Sherman Island by Cove. The external pump was off and the LGR refused to boot. It was replaced by sn 05-0010
2014-01-10	08-0114	FMA RMT-200	Installed		Installed in the box at Sherman to replace sn 05-0010 that had low pressure.
2015-05-12	08-0114	FMA RMT-200	Removed		Removed with the decommissioning of the Sherman Cow Pasture site.
2010-08-17	0976	LI-7500	Installed	Gas Analyzer CO2/H2O	Installed of the Sherman tower so that sn 0041 could be removed for calibration.
2011-01-03	0976	LI-7500	Calibration	Lab	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
2010-11-18	0976	LI-7500	Removed	Gas Analyzer CO2/H2O	This IRGA was removed from the Sherman Tower for calibration.
2011-01-03	0976	LI-7500	Calibration	Lab	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
2011-08-25	0976	LI-7500	Installed	Gas Analyzer CO2/H2O	Installed on Sherman Tower to replace sn 0042 for calibration.
2011-12-15	0976	LI-7500	Calibration	Lab	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
2011-12-14	0976	LI-7500	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. Replaced by sn 0042,
2011-12-15	0976	LI-7500	Calibration	Lab	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
2014-03-13	0976	LI-7500	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0418 for calibration.
2014-09-09	0976	LI-7500	Calibration	Lab	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:
2014-06-26	0976	LI-7500	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. Replaced by sn 0042.
2014-09-09	0976	LI-7500	Calibration	Lab	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:
2009-12-04	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O 2ndTower	This analyzer was removed for calibration from the secondary tower for the LGR trailer.
2013-08-21	1594	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Sherman tower to replace sn 0035 for calibration.
2013-12-06	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Sherman tower for calibration. replaced by sn 418.
2010-05-28	TG1-0100	LI-7700	Removed	Gas Analyzer CH4 Open-path	Removed from the Sherman Levee tower for installation on the Sherman Tower at the cow pasture.
2010-06-16	TG1-0100	LI-7700	Removed	Gas Analyzer CH4 Open-path	The Li7700 was removed from the Sherman Island cow pasture tower and brought to Twitchell Rice for calibration.
2010-07-08	TG1-0100	LI-7700	Installed	Gas Analyzer CH4 Open-path	Moved from Frank's tower in the middle of East pond to Sherman Island.
2010-07-28	TG1-0100	LI-7700	Removed	Gas Analyzer CH4 Open-path	I removed the LI7700 from the Sherman tower for installation at Twitchell.
2012-02-15	TG1-0223	LI-7700	Installed		Installed on the Sherman tower and connected directly to the CR1000 by ethernet. Auto washer also installed.
2012-05-02	TG1-0223	LI-7700	Removed	Gas Analyzer CH4	Removed from the Sherman tower for use at West pond. Replaced by LGR (sn 08-114).
2012-05-02	TG1-0223	LI-7700	Installed	Gas Analyzer CH4	Installed at West Pond on the folding boom at the top of the tower.

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