Equipment and Calibration History

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Ser No.DateLoc FromTitleLoc ToNotes
BB-Fab BB-TA 2016-04-01 Twitchell Alfalfa Upgrade Twitchell Alfalfa I put the battery bank in a new battery box, a Rubbermaid 35-gallon Action Packer. The four batteries fit with room to spare.
BF3 26/8 2016-04-05 Vaira PAR Sensor Diffuse Maintenance Vaira PAR Sensor Diffuse Replaced the desiccant, some condensation in the dome.
HP-127-1.0-1.3-71P P01 2016-04-05 Lab none Installed Vaira Reinstalled at Vaira in the Peltier SHF plate profile at -2cm after fixing broken wire in the lab.
LI-6400 PSC-0785 2016-04-04 Lab none Calibration Lab none Patty Oikawa

6400 was giving "IRGA's not ready" error in field
Discovered mirrors needed to be cleaned
AGC scores-- Before cleaning: CO2_S:4937 H2O_S:-1500
After cleaning: CO2_S=2652 H2O_S=399.7
*protocol for cleaning mirrors is in the cabinet in downstairs lab

Then I zeroed and spanned:
Zero:
Before: CO2_S:13.8 H2O_S:-0.997
After: CO2_S:0.0 H2O_S:0.003

Span with 421.22ppm cal gas:
Before: CO2_S: 425.4
After: CO2_S: 421.1 (setting 0.998)

Span with 11.08C dew point:
Before: H2O_S:12.18
After: H2O_S: 11.08 (setting 1.039)

AM25T 6767 2016-03-24 Twitchell Alfalfa Multiplexer Thermocouple Moved Twitchell Alfalfa Multiplexer Thermocouple Moved the AM25T from the data logger box at the tower to the soil CO2 data logger box. New SoilT TC profiles will go in out there.
HP-127-1.0-1.3-71P P01 2016-03-23 Vaira Removed Lab none Removed from Vaira at -2cm due to broken wire.
CR1000 4190 2008-11-25 Lab none Installed Sherman-2ndTower Installed on the Secondary tower at Sherman.
PS-30M 02431248 2016-03-08 Tonzi-Tower Removed Lab none This charge controller was at the Tonzi Tower. It could not read the battery bank voltage and had shutdown the load with a Low Voltage Disconnect message. I removed it and replaced it with the controller from the Tram system sn 0135002X
PS-30M 0135002X 2016-03-08 Tonzi Moved Tonzi-Tower I moved this charge controller from the Tram solar system to the main Tower power system. The existing charge controller at the tower sn 02431248 stopped reading the battery voltage.
BB-Fab BB-EE 2015-12-08 East End Battery Bank Upgrade East End Battery Bank A third solar panel was added to this solar system.
BB-Fab BB-EE 2015-11-20 East End Battery Bank Upgrade East End Battery Bank I added the two batteries recently removed from Alfalfa. These two batteries had Jan 2012 stickers and tested okay in the lab. I charged them up in the lab before taking them to the field. The other four batteries at East End also had Jan 2012 stickers and I think the two I added were originally at this tower or the Corn tower before.
BB-Fab BB-EE 2014-03-07 East End Battery Bank Moved East End Battery Bank The battery bank and solar panels were moved from the south side of the tower to a new scaffolding to the south of the tower.
BB-Fab BB-EE 2013-11-25 DWR Corn Battery Bank Installed East End Battery Bank This is the initial installation of this battery bank for the East End Tower. Four batteries were brought from the DWR Corn Construction tower and installed at this tower. The batteries are on a boardwalk on the ground next to the tower and will be moved to secondary scaffolding later.
ML2x 377/010 2016-03-02 Twitchell Alfalfa Removed Lab none Removed from -20cm at the Alfalfa tower due to cable damage from farm equipment and sheep.
ML2x 377/008 2016-03-02 Twitchell Alfalfa Removed Lab none Removed from -10cm at the Alfalfa tower due to cable damage from farm equipment and sheep.
HFP01 6491 2016-03-02 Twitchell Alfalfa Removed Lab none Removed from -2cm at the Alfalfa tower due to cable damage from farm equipment and sheep. There is a chip where the cable connects and scratch on the top surface.
HFP01 6342 2016-03-02 Twitchell Alfalfa Removed Lab none Removed from -2cm at the Alfalfa tower due to cable damage from farm equipment and sheep.
HFP01 6498 2016-03-02 Twitchell Alfalfa Removed Lab none Removed from -2cm at the Alfalfa tower due to cable damage from farm equipment and sheep. There are a couple of chips in the edge of the top surface.
GP-001 GP20150111 2016-02-23 Factory Calibration Factory Initial factory calibration.
LI-7500A 75H-2176 2016-02-25 Lab none Installed Twitchell Rice Gas Analyzer CO2/H2O Installed on the Twitchell Rice tower to replace sn 75H-2182 for calibration.
LI-7500A 75H-2182 2016-02-25 Twitchell Rice Gas Analyzer CO2/H2O Removed Lab none Removed from the Twitchell Rice tower for calibration. Replaced by sn 75H-2176
LI-7500A 1594 2016-02-25 Lab none Installed West Pond Gas Analyzer CO2/H2O Installed on the West Pond tower to replace sn 0065 for calibration
LI-7500A 0065 2016-02-25 West Pond Gas Analyzer CO2/H2O Removed Lab none Removed from the West Pond tower for calibration. Replaced by sn 1594.
LI-820 CGA-556 2016-02-09 Lab none Calibration Lab none Last calibration was 09-17-2015
Cleaned cell before calibration
Cell T = 52.2, Pressure = 100.9
Zero Air offset = -20.0 railed
Span God CO2 421.22ppm offset = 11.28ppm
Zero 0.9477 -> 0.9423
Span 0.8394 -> 0.8220
LI-7500 0976 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:
LI-7500A 0418 2016-02-22 Lab none Calibration Lab none Last calibration: 2015-07-15
AGC=48 SDM=7 DAC1=0-1000 DAC2=10-25
Ambient P=101.62kPa, Tair=18.94C, Tdew=8.87C
Zero Air at 650psi, God CO2 421.22 at 650 Tdewspan=11.09
CO2 zero 0.9016 -> 0.9013 Offset: -0.92ppm
CO2 span 1.0064 -> 1.0076 Offset: -0.62ppm
H2O zero 0.855 -> 0.8564 Offset: 0.21ppm
H2O span 0.9897 -> 1.0070 Offset: -0.34ppm
Notes:
LI-7500A 0042 2016-02-22 Lab none Calibration Lab none Last calibration: 2015-07-15
AGC=53 SDM=7 DAC1=0-1000 DAC2=10-25
Ambient P=101.33kPa, Tair=21.07C, Tdew=9.49C
Zero Air at 650psi, God CO2 421.22 at 650 Tdewspan=11.09
CO2 zero 0.9503 -> 0.9505 Offset: 0.98ppm
CO2 span 1.0097 -> 1.0107 Offset: -0.62ppm
H2O zero 0.8526 -> 0.8522 Offset: -0.06ppm
H2O span 1.001 -> 0.9990 Offset: 0.02ppm
Notes:
LI-7500A 1594 2016-02-22 Lab none Calibration Lab none Last calibration: 2015-11-16
AGC=102.0 SDM=6 DAC1=- DAC2=-
Ambient P=100.90kPa, Tair=21.52C, Tdew=9.88C
Zero Air at 650psi, God CO2 421.22 at 700 Tdewspan=11.09
CO2 zero 0.8662 -> 0.8650 Offset: -4.98ppm
CO2 span 1.0243 -> 1.0196 Offset: 2.58ppm
H2O zero 0.8821 -> 0.8863 Offset: 24.5ppm
H2O span 1.0212 -> 1.0139 Offset: 0.15ppm
Notes: Offsets a little larger than usual - new chemicals last time may have settle more.
LI-7500A 75H-2176 2016-02-22 Lab none Calibration Lab none Last calibration: 2015-10-28
AGC=91.38 SDM=6 DAC1=- DAC2=-
Ambient P=100.94kPa, Tair=23.4C, Tdew=8.96C
Zero Air at 650psi, God CO2 421.22 at 700 Tdewspan=11.09
CO2 zero 0.8691 -> 0.8692 Offset: 0.55ppm
CO2 span 1.0177 -> 1.0205 Offset: -1.47ppm
H2O zero 0.8565 -> 0.8564 Offset: -0.6ppm
H2O span 1.0086 -> 1.0136 Offset: -0.1ppm
Notes:
LI-7500A 75H-2514 2016-02-09 Lab none Calibration Lab none Last calibration: 2015-08-18
AGC=102.19 SDM=6 DAC1=- DAC2=-
Ambient P=100.57kPa, Tair=27.18C, Tdew=9.94C
Zero Air at 700psi, God CO2 421.22 at 700 Tdewspan=11.08
CO2 zero 0.9053 -> 0.9050 Offset: -1.23ppm
CO2 span 1.0154 -> 1.0028 Offset: 2.22ppm
H2O zero 0.837 -> 0.8364 Offset: -4.4ppm
H2O span 1.0154 -> 1.0226 Offset: -0.13ppm
Notes:
LI-7500A 75H-2180 2016-02-09 Lab none Calibration Lab none Last calibration: 2015-08-25
AGC=99.2 SDM=6 DAC1=- DAC2=-
Ambient P=100.61kPa, Tair=26.61C, Tdew=8.90C
Zero Air at 700psi, God CO2 421.22 at 700 Tdewspan=11.08
CO2 zero 0.9145 -> 0.9145 Offset: -0.21ppm
CO2 span 1.0275 -> 1.0203 Offset: 3.88ppm
H2O zero 0.8865 -> 0.8847 Offset: -10.6ppm
H2O span 1.0123 -> 1.0241 Offset: -0.22ppm
Notes:
GMT221 F4960020 2016-02-23 Lab none Installed Tonzi CO2 Probe Tree2 Profile -0.08 Installed in the Tonzi Tree 2 profile at -8cm after lab calibration.
GMP222 K1310104 2016-02-23 Lab none Installed Tonzi CO2 Probe Tree2 Profile -0.04 Installed in the Tonzi Tree 2 profile at -4cm after lab calibration.
GMP222 Z2720012 2016-02-23 Lab none Installed Tonzi CO2 Probe Tree2 Profile -0.02 Installed in the Tonzi Tree 2 profile at -2cm after lab calibration.
GMT221 G0150036 2016-02-23 Lab none Installed Tonzi CO2 Probe Tree1 Profile -0.08 Installed in the Tonzi Tree 1 profile at -8cm after lab calibration.
GMT221 G0150035 2016-02-23 Lab none Installed Tonzi CO2 Probe Tree1 Profile -0.04 Installed in the Tonzi Tree 1 profile at -4cm after lab calibration.
GMM222 L2010069 2016-02-23 Lab none Installed Tonzi CO2 Probe Tree1 Profile -0.02 Installed in the Tonzi Tree 1 profile at -2cm after lab calibration.
GMP221 K1340006 2016-02-23 Lab none Installed Tonzi CO2 Probe Open Profile -0.08 Installed in the Tonzi Open profile at -8cm after lab calibration.
GMP222 Z2720015 2016-02-23 Lab none Installed Tonzi CO2 Probe Open Profile -0.04 Installed in the Tonzi Open profile at -4cm after lab calibration.
GMP222 K1310102 2016-02-23 Lab none Installed Tonzi CO2 Probe Open Profile -0.02 Installed in the Tonzi Open profile at -2cm after lab calibration.
LI-7500A 0042 2016-02-23 Lab none Installed Tonzi-Floor Installed on the Tonzi Floor to replace sn 0073 for calibration.
LI-7500A 0073 2016-02-23 Tonzi-Floor Removed Lab none Removed from the Tonzi Floor for calibration. Replaced by sn 0042.
LI-7500A 0418 2016-02-23 Lab none Installed Tonzi-Tower Installed on the Tonzi Tower to replace sn 0035 for calibration.
LI-7500A 0035 2016-02-23 Tonzi-Tower Removed Lab none Removed from the Tonzi Tower for calibration. Replaced by sn 0418.
LI-820 CGA-556 2016-02-23 Lab none Installed Tonzi-Tower Reinstalled in the Tower CO2 profiles system, but the pump was not working and was removed. The IRGA was left unpowered.
GMM222 L2010070 2016-02-23 Lab none Installed Vaira CO2 probe North Profile -0.08 Installed in the Vaira North profile at -8cm after lab calibration.
GMM222 L2010068 2016-02-23 Lab none Installed Vaira CO2 probe North Profile -0.04 Installed in the Vaira North profile at -4cm after lab calibration.
GMT222 G0230062 2016-02-23 Lab none Installed Vaira CO2 probe North Profile -0.02 Installed in the Vaira North profile at -2cm after lab calibration.
GMP222 K1350101 2016-02-23 Lab none Installed Vaira CO2 probe West Profile -0.08 Installed in the Vaira West profile at -8cm after lab calibration.
GMP222 K1350102 2016-02-23 Lab none Installed Vaira CO2 probe West Profile -0.04 Installed in the Vaira West profile at -4cm after lab calibration.
GMP222 K1350103 2016-02-23 Lab none Installed Vaira CO2 probe West Profile -0.02 Installed in the Vaira West profile at -2cm after lab calibration.
GMP222 Y2030049 2016-02-23 Lab none Installed Vaira CO2 probe East Profile -0.08 Installed in the Vaira East profile at -8cm after lab calibration. Using a new cable.
GMP222 K1310103 2016-02-23 Lab none Installed Vaira CO2 probe East Profile -0.04 Installed in the Vaira East profile at -4cm after lab calibration.
GMP222 Y2009109 2016-02-23 Lab none Installed Vaira CO2 probe East Profile -0.02 Installed in the Vaira East profile at -2cm after lab calibration.
LI-7500 0976 2016-02-23 Lab none Installed Vaira Gas Analyzer CO2/H2O Installed on the Vaira tower to replace sn 0041 for calibration.
LI-7500A 0041 2016-02-23 Vaira Gas Analyzer CO2/H2O Removed Lab none Removed from the Vaira tower for calibration. Replaced by sn 0976.
LI-7500A 75H-2514 2016-02-11 Lab none Installed East End Gas Analyzer CO2/H2O Installed on the East End tower to replace sn 75H-2176 for calibration
LI-7500A 75H-2176 2016-02-11 East End Gas Analyzer CO2/H2O Removed Lab none Removed from the East End tower for calibration. Replaced by sn 75H-2514
LI-7500A 75H-2180 2016-02-11 Lab none Installed Twitchell Alfalfa Gas Analyzer CO2/H2O Installed on the Alfalfa Tower to replace sn 1594 for calibration.
LI-7500A 1594 2016-02-11 Twitchell Alfalfa Gas Analyzer CO2/H2O Removed Lab none Removed from the Alfalfa Tower for calibration. Replaced by sn 75H-2180.
GMT221 F4960018 2016-02-11 Lab none Installed Twitchell Alfalfa Installed at Alfalfa Profile A at 8cm. The existing probe sn Y0710013 was removed due to low readings.
GMP221 Y0710013 2016-02-11 Twitchell Alfalfa Removed Lab none Removed from Alfalfa Profile A at 8cm due to low readings. Replaced by sn F4960018
GMT221 F4960020 2016-02-04 Tonzi CO2 Probe Tree2 Profile -0.08 Removed Lab none Removed from Tonzi Tree 2 profile at -8cm for calibration
GMP222 Z2720012 2016-02-04 Tonzi CO2 Probe Tree2 Profile -0.04 Removed Lab none Removed from Tonzi Tree 2 profile at -4cm for calibration
GMP222 Z2720014 2016-02-04 Tonzi CO2 Probe Tree2 Profile -0.02 Removed Lab none Removed from Tonzi Tree 2 profile at -2cm for calibration
GMT221 G0150036 2016-02-04 Tonzi CO2 Probe Tree1 Profile -0.08 Removed Lab none Removed from Tonzi Tree profile at -8cm for calibration
GMP222 Z2720013 2016-02-04 Tonzi CO2 Probe Tree1 Profile -0.04 Removed Lab none Removed from Tonzi Tree profile at -4cm for calibration
GMM222 L2010069 2016-02-04 Tonzi CO2 Probe Tree1 Profile -0.02 Removed Lab none Removed from Tonzi Tree profile at -2cm for calibration
GMP222 K1310104 2016-02-04 Tonzi CO2 Probe Open Profile -0.08 Removed Lab none Removed from Tonzi Open profile at -8cm for calibration
GMP222 K1310103 2016-02-04 Tonzi CO2 Probe Open Profile -0.04 Removed Lab none Removed from Tonzi Open profile at -4cm for calibration
GMP222 K1310102 2016-02-04 Tonzi CO2 Probe Open Profile -0.02 Removed Lab none Removed from Tonzi Open profile at -2cm for calibration
GMM222 L2010070 2016-02-04 Vaira CO2 probe North Profile -0.08 Removed Lab none Removed from Vaira North profile at -8cm for calibration
GMM222 L2010068 2016-02-04 Vaira CO2 probe North Profile -0.04 Removed Lab none Removed from Vaira North profile at -4cm for calibration
GMT222 G0230062 2016-02-04 Vaira CO2 probe North Profile -0.02 Removed Lab none Removed from Vaira North profile at -2cm for calibration
GMP222 K1350101 2016-02-04 Vaira CO2 probe West Profile -0.08 Removed Lab none Removed from Vaira West profile at -8cm for calibration
GMP222 K1350102 2016-02-04 Vaira CO2 probe West Profile -0.04 Removed Lab none Removed from Vaira West profile at -4cm for calibration
GMP222 K1350103 2016-02-04 Vaira CO2 probe West Profile -0.02 Removed Lab none Removed from Vaira West profile at -2cm for calibration
GMP222 Z2720015 2016-02-04 Vaira CO2 probe East Profile -0.04 Removed Lab none Removed from Vaira East profile at -4cm for calibration
GMP221 L2058003 2016-01-21 Twitchell Alfalfa Removed Lab none Removed from Alfalfa set A at 8cm due to maxed out readings.
WM 1590 153805 2016-01-12 Lab none Installed Twitchell Alfalfa Anemometer Installed to replace old sonic--brand new
WM 1590 120908 2016-01-12 Twitchell Alfalfa Anemometer Removed Lab none Removed from field for calibration
WM 1590 153804 2016-01-12 Lab none Installed East End Anemometer Installed at East End, brand new
WM 1590 124215 2016-01-12 East End Anemometer Removed Lab none Removed from tower for calibration. The SOS was reading unexpectedly low.
LI-7500A 75H-2150 2015-12-28 Lab none Installed Mayberry Gas Analyzer CO2/H2O Installed on the Mayberry Tower to replace sn 75H-2514 for calibration.
LI-7500A 75H-2514 2015-12-28 Mayberry Gas Analyzer CO2/H2O Removed Lab none Removed from the Mayberry tower for calibration. Replaced by sn 75H-2150
FGGA 09-0010 2010-04-08 Twitchell Rice Calibration Twitchell Rice Last calibration: 2010-03-11
Cell Pressure=134.99Torr, Cell Temperature=26.64C, Ring Time=14.014usec
2nd Standard at 1900psi CH4 Span=3.276ppm, CO2 Span=433.0ppm
CH4 = 3.302 -> 3.305 Offset: -0.026ppm
CO2 = 436 -> 439 Offset: -3ppm
Notes: Seems to have made it worse?
FGGA 09-0010 2010-03-03 Lab none Calibration Lab none Last calibration: 2010-01-14
Cell Pressure=138.16Torr, Cell Temperature=20.17C, Ring Time=13.987usec
God CH4 at psi CH4 Span=1.8978ppm, CO2 Span=382.50ppm
CH4 = 1.834 -> 1.903 Offset: 0.064ppm
CO2 = 354 -> 383 Offset: 28.5ppm
Notes: Testing with CH4 standard 4.978ppm CH4 and 3ppm CO2 LGR reading: 4.785ppm +- 9ppb CH4 CO2 reading -1.00 Maybe out of range Testing with CO2 standard 597.4ppm CO2 ??ppm CH4 LGR reading: 2.701ppm +- 9ppb CH4 LGR reading: 582ppm +-4ppm CO2 This analyzer seems noisier than the single channel. Will check other FGGA analyzer after swap.
LI-7500A 75H-2669 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.
LI-7700 TG1-0424 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.
LI-7550 AIU-1570 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. This box had a significant amount of water inside. There was some corrosion on the power connectors but it looks like it was running up until I turned it off. I blew out all the connectors and stuffed it full of desiccant in the lab.
425A 0843 2015-12-23 Tonzi Removed Lab none Removed from the 2nd from top location of the wind profile near the Floor tower.
NL115 13053 2015-12-23 Tonzi Removed Lab none Removed from the box for the wind profile near the Floor tower.
CR1000 66250 2015-12-23 Tonzi Removed Lab none Removed from the box for the wind profile near the Floor tower.
425A 0846 2015-12-23 Tonzi Removed Lab none Removed from the top location of the wind profile near the Floor tower.
425A 0839 2015-12-23 Tonzi Removed Lab none Removed from the 3rd from bottom location of the wind profile near the Floor tower.
425A 0852 2015-12-23 Tonzi Removed Lab none Removed from the bottom location of the wind profile near the Floor tower.
SATI-3K 000603 2012-09-21 Borrowed Borrowed Lab none Borrowed from Robin in Allen Goldstein's lab for an inter-comparison
PAR-LITE 010163 2015-03-05 Lab none Installed Mayberry PAR Sensor Reflected Veg Installed on the Mayberry tower (over tules) but it was reading high when it was connected to the multiplexor. The mux channel was even read high when jumped - so may be bad channel on mux. The PAR sensor was left on the tower and the mux or program will be changed to deal with the bad channel.
HP-127-1.0-1.3-71P P01 2015-12-21 Lab none Repair Lab none The red lead looked chewed and was broken at its junction to the plate. I soldered a new red wire directly to the junction and a new black wire about 3cm from the plate. Both wires were covered with heat shrink and the junctions to the plate were painted with black Rustoleum paint.
BB-Fab BB-TW 2014-09-10 Twitchell Rice Upgrade Twitchell Rice We moved the three old group 8D out of the way and installed the four group 27 batteries. I had two older batteries in the lab and bought two more. We also installed a new solar charger under the solar panels.