Equipment and Calibration History

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Ser No.DateLoc FromTitleLoc ToNotes
ML2x 139/052 2014-04-10 Sherman Island Removed Lab none Removed from Sherman due to bad readings. This probe was only in a very short time to replace and older probe whose tines had rotted off, but this one doesn't seem to work either.
ML2x 139/052 2014-03-13 Lab none Installed Sherman Island Installed to replace probe with rotted tines previously removed.
ML2x 70/020 2013-12-06 Sherman Island Removed Lab none Removed from Sherman due to bad readings. The probe was buried at 23cm below the surface. All but one tine had rotted off. I doubt this probe is fixable.
AM416 14048 2014-08-07 Sherman Island Removed Lab none Removed with the rest of the soil CO2 system from the Sherman site to be redeployed at the Alfalfa site on Twitchell
FMA RMT-200 08-0114 2014-01-10 Lab none Installed Sherman Island Installed in the box at Sherman to replace sn 05-0010 that had low pressure.
FMA RMT-200 05-0010 2014-01-10 Sherman Island Removed Lab none Removed from the box at Sherman due to low pressure readings. Replaced by sn 08-0114
GMP222 H1630066 2014-08-07 Sherman Island Removed Lab none Removed with the rest of the soil CO2 system from the Sherman site to be redeployed at the Alfalfa site on Twitchell
PS-30M 11400072 2014-08-07 Sherman Island Removed Lab none Removed from the box at Sherman with the rest on the soil CO2 system.
GVSP30 DG002 2013-04-05 Sherman Island Removed Lab none Removed from the box at Sherman. This pump has not been run in the field in a long time and probably needs a check up before it is run again.
GMT221 F4960020 2014-08-07 Sherman Island Removed Lab none Removed with the rest of the soil CO2 system from the Sherman site to be redeployed at the Alfalfa site on Twitchell
GMT221 G0150035 2014-08-07 Sherman Island Removed Lab none Removed with the rest of the soil CO2 system from the Sherman site to be redeployed at the Alfalfa site on Twitchell
GMT221 G0150036 2014-08-07 Sherman Island Removed Lab none Removed with the rest of the soil CO2 system from the Sherman site to be redeployed at the Alfalfa site on Twitchell
LI-7500A 75H-2176 2015-05-07 Lab none Installed West Pond Gas Analyzer CO2/H2O Installed on the West Pond tower to replace sn 75H-2182 for calibration.
LI-7500A 75H-2182 2015-05-07 West Pond Gas Analyzer CO2/H2O Removed Lab none Removed from the West Pond tower for calibration. Replaced by sn 75H-2176
LI-7500A 75H-2514 2015-05-07 Lab none Installed Twitchell Rice Gas Analyzer CO2/H2O Installed on the Twitchell Rice tower to replace sn 75H-2150 for calibration.
LI-7500A 75H-2150 2015-05-07 Twitchell Rice Gas Analyzer CO2/H2O Removed Lab none Removed from the Twitchell Rice tower for calibration. Replaced by sn 75H-2514
CR1000 66249 2015-05-06 Lab none Installed Tonzi Data Logger IRT Installed at Tonzi to the east just north of the road. This data logger is collecting data from the two IRT sensors
SI-121 1964 2015-05-06 Lab none Installed Tonzi Infrared Temperature Grass A Installed at Tonzi to the east just north of the road. This sensor is point down on a patch of ground cleared of grass.
SI-121 1965 2015-05-06 Lab none Installed Tonzi Infrared Temperature Tree Crown Installed at Tonzi to the east just north of the road. This sensor is point down on top of a small tree.
LI-800 AKC-0479 2015-05-04 Loaned Returned Lab none Returned by Pawel Misztal who said it work well for his microbial cultures.
425A 0860 2015-04-29 Tonzi Removed Lab none Removed from the 3.89m location on the wind profile due to bad data. This is the sonic the was banged previously.
CNR1 020476 2015-04-29 Lab none Installed Tonzi-Tower Installed on the Tonzi Tower to replace NR01 sn 1720 that has spike problems.
NR01 1720 2015-04-29 Tonzi-Tower Removed Lab none Removed from the Tonzi Tower due to SWin spikes and dawn spikes in all channels. Replaced by CNR1 sn 020476. There are scratches on both SW domes from contact with the tower structure.
WMP 1352 000019 2015-04-29 Lab none Installed Tonzi-Tower Installed on the Tonzi Tower to replace sn 000021 that has been having trouble with the serial stream dropping out.
WMP 1352 000021 2015-04-29 Tonzi-Tower Removed Lab none Removed from the Tonzi Tower due to repeated serial stream outages. Replaced by sn 000019.
LI-7500 0976 2015-04-21 Vaira Gas Analyzer CO2/H2O Removed Lab none Removed from the Vaira tower for calibration. Replaced by sn 0041
LI-7500A 0041 2015-04-21 Lab none Installed Vaira Gas Analyzer CO2/H2O Installed on the Vaira tower to replace sn 0976 for calibration.
LI-7500A 0418 2015-04-23 East End Gas Analyzer CO2/H2O Removed Lab none Removed from the East End tower for calibration. Replaced by sn 1594.
LI-7500A 1594 2015-04-23 Lab none Installed East End Gas Analyzer CO2/H2O Installed on the Eat End tower to replace sn 0418 for calibration.
LI-7500A 0065 2015-04-23 Lab none Installed Twitchell Alfalfa Gas Analyzer CO2/H2O Installed on the Alfalfa tower to replace sn 75H-2176 for calibration.
LI-7500A 75H-2176 2015-04-23 Twitchell Alfalfa Gas Analyzer CO2/H2O Removed Lab none Removed from the Alfalfa tower for calibration. Replaced by sn 0065.
LI-7500A 75H-2180 2015-04-23 Lab none Installed Mayberry Gas Analyzer CO2/H2O Installed on the Mayberry tower to replace sn 75H-2514 for calibration.
LI-7500A 75H-2514 2015-04-23 Mayberry Gas Analyzer CO2/H2O Removed Lab none Removed from the Mayberry tower for calibration. It was replaced by sn 75H-2180.
SI-121 1281 2015-04-13 Lab none Shipped Factory A laboratory check on the senor showed it reading about 10C low. Sent to Apogee on RMA 21085
SI-121 1281 2015-04-20 Factory Disposed Disposed Apogee says: Upon inspection it appears that the thermopile detector has some marks on the FOV glass. This is most likely what is causing the sensors to read so far off from your reference point. I can attempt to calibrate out those marks on the sensor but I am unsure if the uncertainty will be within the 0.1°C specification. The other option is for you to trade in these units for new one’s at a substantial 40% discount, bringing the price to 3 per sensor.

We decided to trade the sensor in for a new one.
SI-121 1282 2015-04-20 Factory Disposed Disposed Apogee says: Upon inspection it appears that the thermopile detector has some marks on the FOV glass. This is most likely what is causing the sensors to read so far off from your reference point. I can attempt to calibrate out those marks on the sensor but I am unsure if the uncertainty will be within the 0.1°C specification. The other option is for you to trade in these units for new one’s at a substantial 40% discount, bringing the price to 3 per sensor.

We decided to trade the sensor in for a new one.
SI-121 1282 2015-04-13 Lab none Shipped Factory A laboratory check showed bad readings from the target thermopile. The readings fluctuated wildly and sometimes out of range. Sent to Apogee on RMA 21085
CNR1 020476 2013-06-28 Lab none Calibration Lab none Using the data from the recent deployment at the Alfalfa site new calibrations factors were determined. (document available)
SWin = 10.0uV/(W/m2)
SWout = 9.6 uV/(W/m2)
LWin = 11.15 uV/(W/m2)
LWout = 8.6 uV/(W/m2)
LI-7500A 1594 2015-04-20 Lab none Calibration Lab none Last calibration: 2014-12-22
AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25
Ambient P=100.28kPa, Tair=20.38C, Tdew=12.81C
Zero Air at 900psi, God CO2 421.22 at 1200 Tdewspan=15.96
CO2 zero 0.8649 -> 0.8648 Offset: -0.44ppm
CO2 span 1.0175 -> 1.0178 Offset: -0.22ppm
H2O zero 0.8981 -> 0.8985 Offset: 2.2ppm
H2O span 1.1398 -> 1.0087 Offset: 2.68ppm
Notes: Relatively large offsets in H2O span, similar to other 7500s calibrated at this time - dew point generator and Vaisala probe agreed with in 0.5C
LI-7500A 0041 2015-04-20 Lab none Calibration Lab none Last calibration: 2014-12-22
AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25
Ambient P=100.14kPa, Tair=20.41C, Tdew=14.44C
Zero Air at 900psi, God CO2 421.22 at 1200 Tdewspan=15.96
CO2 zero 1.0008 -> 1.0002 Offset: -2.0ppm
CO2 span 1.0116 -> 1.0115 Offset: -0.02ppm
H2O zero 0.8242 -> 0.8243 Offset: 0.8ppm
H2O span 1.1234 -> 0.9991 Offset: 2.62ppm
Notes: External serial port not working. Relatively large offset in H2O span, similar to other 7500s calibrated at this time - dew point generator and Vaisala probe agreed with in 0.5C
LI-7500A 75H-2180 2015-04-20 Lab none Calibration Lab none Last calibration: 2014-09-02
AGC=98.0 SDM=1 DAC1=- DAC2=-
Ambient P=99.87kPa, Tair=20.88C, Tdew=11.21C
Zero Air at 850psi, God CO2 421.22 at 1100 Tdewspan=15.96
CO2 zero 0.9143 -> 0.9146 Offset: 1.39ppm
CO2 span 1.0134 -> 1.0232 Offset: -5.12ppm
H2O zero 0.8812 -> 0.8819 Offset: 4.6ppm
H2O span 1.0193 -> 1.0154 Offset: 0.08ppm
Notes: Pressure coefficients might not have been reset.
LI-7500A 0065 2015-04-20 Lab none Calibration Lab none Last calibration: 2014-12-22
AGC=72.8 SDM=1 DAC1=- DAC2=-
Ambient P=100.0kPa, Tair=20.13C, Tdew=12.49C
Zero Air at 850psi, God CO2 421.22 at 1100 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: 4.0ppm
H2O span 1.1245 -> 1.0071 Offset: 2.34ppm
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
HFP01 10822 2015-04-09 Lab none Installed Twitchell Rice Heat Flux Plate B installed at rice as SHF2 in mux channel 17
HFP01 10809 2015-04-09 Lab none Installed Twitchell Rice Heat Flux Plate A Installed at rice as SHF1 in mux channel 16
PAR-LITE 060868 2015-04-15 Lab none Installed Tonzi-Tower Installed on the Tonzi Tower with rotating shadow band to measure diffuse PAR.
PRB-K Type #8 00000128B8072 2015-04-08 Lab none Installed Tonzi Installed in a location near the main tower ground sensors to replace sn 000007931AFE that has a broken pin.
PRB-K Type #8 000007931AFE 2015-04-08 Tonzi Removed Lab none Removed from a location near the main tower ground sensors due to a broken pin (2nd from bottom). Replaced by sn 00000128B8072
LI-7500A 0035 2015-04-08 Lab none Installed Tonzi-Tower Installed on the Tower site to replace sn 1594 for calibration.
LI-7500A 1594 2015-04-08 Tonzi-Tower Removed Lab none Removed from the Tower site for calibration. Replaced by sn 0035
LI-7500A 0073 2015-04-08 Lab none Installed Tonzi-Floor Installed on the Floor site to replace sn 0041 for calibration.
LI-7500A 0041 2015-04-08 Tonzi-Floor Removed Lab none Removed from the Floor site for calibration. Replaced by sn 0073
425A 0854 2015-04-08 Lab none Installed Tonzi Installed at ~0.1m agl in a wind profile near the Floor tower.
425A 0852 2015-04-08 Lab none Installed Tonzi Installed at ~1.2m agl in a wind profile near the Floor tower.
425A 0839 2015-04-08 Lab none Installed Tonzi Installed at ~2.0m agl in a wind profile near the Floor tower.
425A 0860 2015-04-08 Lab none Installed Tonzi Installed at 3.89m agl in a wind profile near the Floor tower.
425A 0843 2015-04-08 Lab none Installed Tonzi Installed at 5.42m agl in a wind profile near the Floor tower.
425A 0846 2015-04-08 Lab none Installed Tonzi Installed at 7.56m agl in a wind profile near the Floor tower.
NL115 13053 2015-04-08 Lab none Installed Tonzi Installed with the Handar wind profile near the Floor tower.
CR1000 66250 2015-04-08 Lab none Installed Tonzi Installed with the Handar wind profile near the Floor tower.
LI-7500A 0073 2015-04-06 Lab none Calibration Lab none Last calibration: 2014-09-23
AGC=58 SDM=7 DAC1=0-1000 DAC2=10-25
Ambient P=100.36kPa, Tair=18.6C, Tdew=4.76C
Zero Air at 900psi, God CO2 421.22 at 1200 Tdewspan=15.97
CO2 zero 0.9586 -> 0.9578 Offset: -2.8ppm
CO2 span 1.0023 -> 1.0031 Offset: -0.22ppm
H2O zero 0.7382 -> 0.7355 Offset: -17ppm
H2O span 1.0109 -> 1.0253 Offset: -0.27ppm
Notes: The H2O span was unstable. Adding water to the dew point generator seemed to improve the situation but still variable.
LI-7500A 0035 2015-04-06 Lab none Calibration Lab none Last calibration: 2014-09-09
AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25
Ambient P=100.34kPa, Tair=18.40C, Tdew=4.37C
Zero Air at 900psi, God CO2 421.22 at 1200 Tdewspan=15.97
CO2 zero 0.9386 -> 0.9389 Offset: 1.0ppm
CO2 span 1.0181 -> 1.0257 Offset: -4.02ppm
H2O zero 0.8957 -> 0.8939 Offset: -10.0ppm
H2O span 0.9838 -> 0.9664 Offset: 0.33ppm
Notes: The H2O span was unstable. Adding water to the dew point generator seemed to improve the situation but still variable.
LI-7700 TG1-0223 2015-03-24 West Pond Gas Analyzer CH4 Calibration West Pond Gas Analyzer CH4 Calibration Location: West Pond
Last calibration: 2014-09-10
RSSI=80%, Optical RH=19%
Ambient P=102.3kPa, Tair=20.8C
Zero air at 1200psi, 2nd CH4 4.995 at 600
CH4 Zero Offset: -0.001ppm
CH4 Span Offset: 0.08ppm
Notes:
LI-7700 TG1-0211 2015-03-24 Twitchell Rice Gas Analyzer CH4 Calibration Twitchell Rice Gas Analyzer CH4 Calibration Location: Twitchell
Last calibration: 2014-09-10
RSSI=56%, Optical RH=25%
Ambient P=102.5kPa, Tair=18.8C
Zero air at 1200psi, 2nd CH4 4.995 at 600
CH4 Zero Offset: -0.05ppm
CH4 Span Offset: 0.065ppm
Notes: Very windy
CR10X 31308 2014-02-05 Lab none Installed Sherman Island Installed in the empty enclosure at Sherman to collect data from the reinstalled diffuse PAR sensor. The new shadow band revolves faster so the data collection had to be removed from the main CR10x
PRB-K Type #8 00000AB5408F 2013-09-18 Sherman Island Removed Lab none Removed from the west location at Sherman because it wasn't working. The bottom-most pin is broken.
SI-121 1281 2015-03-24 Mayberry Infrared Temperature Vegetation Removed Lab none Removed from the Mayberry tower for use by Ana at Tonzi. This sensor was pointed at the tules.
SI-121 1282 2015-03-24 Mayberry Infrared Temperature Water Removed Lab none Removed from the Mayberry tower for use by Ana at Tonzi. This sensor was pointing at the water.
PRB-K Type #8 00000128B8072 2015-03-24 Sherman Island Removed Lab none Removed from the North location for use at Tonzi and in preparation of decommissioning of the Sherman site.
PRB-K Type #8 00000FEDDAA1 2015-03-24 Sherman Island Removed Lab none Removed from the East location for use at Tonzi and in preparation of decommissioning of the Sherman site.
WMP 1352 000019 2011-04-26 Lab none Installed Mayberry Anemometer Installed on the Mayberry tower to replaced sn 000022 that had stopped sending data.
PDCR 1830-8388 2421703 2007-03-27 Lab none Installed Sherman Island Installed by Ted at the Sherman cow pasture site
PAR-LITE 010164 2007-04-20 Lab none Installed Sherman Island PAR Sensor Diffuse Installed to measure diffuse PAR with rotating shadow band
ML2x 64/068 2007-04-05 Lab none Installed Sherman Island Soil Moisture Probe C Installed by Ted at the Sherman cow pasture site at -10cm
ML2x 70/020 2007-04-05 Lab none Installed Sherman Island Soil Moisture Probe B Installed by Ted at the Sherman cow pasture site at -30cm
ML2x 70/002 2007-04-04 Lab none Installed Sherman Island Soil Moisture Probe A Installed by Ted at the Sherman cow pasture site at -20cm
CNR1 020476 2007-03-27 Lab none Installed Sherman Island Net Radiometer 4-way Installed on the radiation boom
PAR-LITE 040412 2007-03-27 Lab none Installed Sherman Island PAR Sensor Reflected Installed on radiation boom in the downward position to measure reflected PAR
PAR-LITE 040411 2007-03-27 Lab none Installed Sherman Island PAR Sensor Incoming Installed on radiation boom in the upward position to measure incoming PAR
GP-001 GP20140011 2014-06-26 Lab none Installed East End CO2 probe Installed at the East End tower.
TE525MM 49187-109 2009-05-20 Lab none Installed Twitchell Rice Precipitaion Installed at Twitchell Rice on a stake south east of the tower.
CR23X 2303 2009-04-03 Lab none Installed Twitchell Rice Data Logger Met Installed with the initial set up of the Twitchell Rice tower
CS511 DO-8 2015-03-05 Twitchell Rice DO Sensor Removed Lab none Removed from Twitchell Rice because the field is dry and we moved the tower for plowing
HFP01SC 00244 2009-04-03 Lab none Installed Twitchell Rice Heat Flux Plate A Installed with the initial set up of the Twitchell Rice tower.
HFP01SC 00246 2009-04-03 Lab none Installed Twitchell Rice Heat Flux Plate C Installed with the initial set up of the Twitchell Rice tower.
HFP01 002211 2009-04-03 Lab none Installed Twitchell Rice Heat Flux Plate D Installed with the initial set up of the Twitchell Rice tower.
NR-LITE 990352 2009-04-03 Lab none Installed Twitchell Rice Net Radiometer Installed with the initial set up of the Twitchell Rice tower.
PAR-LITE 050597 2009-04-03 Lab none Installed Twitchell Rice PAR Sensor Incoming Installed with the initial set up of the Twitchell Rice tower. This sensor is pointing up.
PAR-LITE 050596 2009-04-03 Lab none Installed Twitchell Rice PAR Sensor Reflected Installed with the initial set up of the Twitchell Rice tower. This sensor is pointing down collecting reflected PAR.
CM11 996985 2009-04-03 Lab none Installed Twitchell Rice Pyranometer Installed with the initial set up of the Twitchell Rice tower.
LI-820 CGA-556 2015-03-02 Tonzi-Tower Calibration Tonzi-Tower Calibrated on tower. 52.1C, 93.7kPa, last cal 2015-02-04. N2 1200psi, CO2 405ppm 1750psi.
zero 0.6ppm, 0.9040
span -0.8ppm, 0.8395
LI-6400 PSC-0785 2015-03-03 Lab none Calibration Lab none Patty calibrated the LI6400, zero and span.
Zero
CO2: -22uml (after calibration: 0.0uml )
H2O: -1.04mml (after calibration: 0.003mml)

Span
Gas = 421.11ppm
CO2: 427.8uml (after calibration: 421.0uml)
Dew point gen=15.95 degrees
H2O: 16.27 (after calibration: 15.95)
LI-800 AKC-0479 2015-02-11 Lab none Maintenance Lab none Installed the cell from the LI-820. This cell might have a bad spot on its wall, but it seemed to clean up okay and was giving stable readings.
LI-800 AKC-0479 2015-02-27 Lab none Loaned Loaned Loaned to Pawel Misztal in Allen Goldstein's lab for three weeks. Power/data connector, cleaning kit, null modem and tube fittings included.
LI-800 AKC-0479 2015-02-27 Lab none Calibration Lab none Calibrated with zero air and 421.22ppm CO2 God bottle. Zero offset = 53.2ppm, span offset 0.4ppm
1189PC 000195 2015-02-12 Tonzi-Tower Removed Lab none Removed from the Tonzi Tower due to a number of lockups that were probably related to power losses. Replaced with a RS422 to RS232 converter.
LI-7700 TG1-0155 2015-02-05 Lab none Installed East End Gas Analyzer CH4 Installed on the East End tower to replace sn TG1-0224 that has the pump control problem
LI-7700 TG1-0224 2015-02-05 East End Gas Analyzer CH4 Removed Lab none Removed from East End for testing in the lab due to the pump control problem. Replaced by sn TG1-0155
278 4505052 2015-02-05 Mayberry Barrometer Removed Lab none Removed from Mayberry for testing because it was reading 109kPa.
GP-001 GP20140026 2015-02-05 Lab none Installed Mayberry CO2 Probe B Installed in the middle position of the stringer at Mayberry. This sensor has copper mesh over the filter and replaces sn GO20140024
GP-001 GP20140023 2015-02-05 Lab none Installed Mayberry CO2 Probe C Installed in the bottom position of the stringer at Mayberry. This sensor has copper mesh over the filter and replaces sn GO20140025