Equipment and Calibration

Equipment history at Vaira

| ALL | | Anemometer || Battery Bank || Camera || CO2 Probe || Data Logger || Forced Diffusion || Gas Analyzer || Heat Flux Plate || Interface || LED sensor || Moisture Point || Multiplexer || Narrow Band || Net Radiometer || PAR Sensor || Precipitation || Pyranometer || Radio || RH & Temp || Soil Moisture Probe || Solar Controller || Solar Panel || Weather Station |

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) ORDER BY b.equip, a.eh_date, field(a.eh_title,'Calibration', 'Removed', 'Installed')

Date	Serial No.	Model	Action	Ref	Notes
Anemometer
2000-10-22	000019	WMP 1352	Installed	Anemometer	Installed on the Vaira Tower with the initial setup of the site.
2001-01-05	000019	WMP 1352	Removed	Anemometer	Removed from the Vaira Tower due to going off scale at midday. Replaced by sn 000024
2001-01-05	000024	WMP 1352	Installed	Anemometer	Installed on the Vaira Tower to replace sn 000019 that was going off scale at midday.
2002-04-11	000024	WMP 1352	Removed	Anemometer	Removed from Vaira for calibration. Replaced by sn 000028.
2002-04-11	000028	WMP 1352	Installed	Anemometer	Installed at Vaira to replace sn 000024 for calibration.
2002-04-18	000028	WMP 1352	Location	Anemometer	Location noted in fieldnotes
2005-01-27	000028	WMP 1352	Removed	Anemometer	Removed from Vaira to be replaced by another sonic - no reason given. Two headings given: 0 and 260 magnetic. Unclear which is new heading and which is old.
2005-01-27	000023	WMP 1352	Installed	Anemometer	Installed at Vaira to replace current sonic - no reason given. Two headings given: 0 and 260 magnetic. Unclear which is new heading and which is old.
2014-04-08	000028	WMP 1352	Location	Anemometer	Current location of this instrument and probably back to before 2008
2017-04-10	153805	WM 1590	Installed		Added to the Vaira eddy tower for the Ameriflux inter-comparison and the transition to newer LI-7500A eddy systems.
2017-05-11	153805	WM 1590	Removed		Removed from Vaira because the Ameriflux intercomparison finished and because we received new 7500A and sonics from Ameriflux. This sonic was replaced with brand new sonic from Ameriflux, sn 170524.
2017-05-11	170524	WM 1590	Installed		Installed at Vaira to replace sn 153805.
2017-05-24	000028	WMP 1352	Removed	Anemometer	Removed from the Vaira Tower. Replaced by the new Licor GHG system from Ameriflux.
2024-02-09	022365416	SONIC-ANEMO-SPE10	Installed	Weather Station B	Accessory for the Arable Mark 4 sn D006920.
Battery Bank
2003-02-13	BB-VR	BB-Fab	Upgrade	Battery Bank Main	Added four batteries removed from Tonzi-Tower. Now a total of eight batteries.
2003-12-19	BB-VR	BB-Fab	Upgrade	Battery Bank Main	Cleaned battery terminals and added four batteries from the Floor site for a total of 12 at Vaira.
2005-12-13	BB-VR	BB-Fab	Upgrade		Six old gel cell batteries were removed and will be added to Tonzi Tower. Eight new gel cell batteries installed. The new batteries are Maxrate Premium Plus MT12-350. Valve regulated lead acid battery 12v 93 ah @ 20 hr rate. Bought from Nor-Cal Battery for 5 ea.
2012-02-16	BB-VR_soilco2	BB-Fab	Installed	none	Initial installation of the VR_soilco2 battery bank. Two pairs of deep cycle batteries were installed for a 24V system. However the solar panels were only wired as 12V and bled the batteries dry.
2012-03-19	BB-VR_soilco2	BB-Fab	Removed		The four new batteries for the soil CO2 sensors were completely dead (~2V). The batteries were wired for 24V but the solar panels were wired for 12V. Batteries removed.
2012-03-21	BB-VR_soilco2	BB-Fab	Installed	none	I installed new batteries (borrowed from DWR) for the new soil co2 system. The original batteries were killed because they were wired for 24V and the solar for 12V.
2018-06-05	BB-VR_soilco2	BB-Fab	Replaced		The battery bank from Twitchell Alfalfa was installed to replace the original batteries here that had a catastrophic failure
2018-06-05	BB-TA	BB-Fab	Removed		The site was shut down and the battery bank with action packer was removed for use at Vaira soil co2.
2020-09-16	BB-VR_soilco2	BB-Fab	Maintenance	Battery Bank SoilCO2	I checked the water in the soil co2 battery bank. The water levels were low exposing the plates but these batteries didn’t take that much water – about a gallon to fill all of them.
2022-05-10	BB-VR	BB-Fab	Maintenance	Battery Bank Main	Fixed broken wire between the two banks of solar panels. Disconnected and load tested all the batteries. Two batteries, second from north in each box, tested bad. These were moved to the north most position and left disconnected. The other six tested good and were reconnected.
Camera
2011-10-13	0030F4D0A168	NULL	Installed		Installed on the Vaira radiation tower to cover the same area as the existing webcam. The camera is about 3m agl, pointed at about 290deg true and pointed down 10deg from horizontal. FOV is about 70deg.
CO2 Probe
2012-03-21	G0230061	GMT222	Installed	CO2 probe North Profile -0.02	Installed at Vaira in the north set at -2cm
2012-03-21	Y2030049	GMP222	Installed	CO2 probe East Profile -0.02	Installed at Vaira in the east set at -2cm
2012-03-21	G0230062	GMT222	Installed	CO2 probe West Profile -0.02	Installed at Vaira in the west set at -2cm
2012-03-21	Y1950005	GMP222	Installed	CO2 probe North Profile -0.04	Installed at Vaira in the north set at -4cm
2012-03-21	Z2720015	GMP222	Installed	CO2 probe East Profile -0.04	Installed at Vaira in the east set at -4cm
2012-03-21	Y0850004	GMP221	Installed	CO2 probe West Profile -0.04	Installed at Vaira in the west set at -4cm
2012-03-21	Y0710013	GMP221	Installed	CO2 probe North Profile -0.08	Installed at Vaira in the north set at -8cm
2012-03-21	Y2009100	GMP221	Installed	CO2 probe East Profile -0.08	Installed at Vaira in the east set at -8cm
2012-03-21	Y1720006	GMP221	Installed	CO2 probe West Profile -0.08	Installed at Vaira in the west set at -8cm
2014-01-24	G0230061	GMT222	Removed	CO2 probe North Profile -0.02	Removed from Vaira north plot at -2cm for lab calibration
2014-01-24	Y2030049	GMP222	Removed	CO2 probe East Profile -0.02	Removed from Vaira east plot at -2cm for lab calibration
2014-01-24	G0230062	GMT222	Removed	CO2 probe West Profile -0.02	Removed from Vaira west plot at -2cm for lab calibration
2014-01-24	Y1950005	GMP222	Removed	CO2 probe North Profile -0.04	Removed from Vaira north plot at -4cm for lab calibration
2014-01-24	Z2720015	GMP222	Removed	CO2 probe East Profile -0.04	Removed from Vaira east plot at -4cm for lab calibration
2014-01-24	Y0850004	GMP221	Removed	CO2 probe West Profile -0.04	Removed from Vaira west plot at -4cm for lab calibration
2014-01-24	Y0710013	GMP221	Removed	CO2 probe North Profile -0.08	Removed from Vaira north plot at -8cm for lab calibration
2014-01-24	Y2009100	GMP221	Removed	CO2 probe East Profile -0.08	Removed from Vaira east plot at -8cm for lab calibration
2014-01-24	Y1720006	GMP221	Removed	CO2 probe West Profile -0.08	Removed from Vaira west plot at -8cm for lab calibration
2014-01-29	G0230061	GMT222	Installed	CO2 probe North Profile -0.02	Installed at Vaira in the North profile as -2cm with new U-shaped tops on the PVC enclosures.
2014-01-29	Y1950005	GMP222	Installed	CO2 probe North Profile -0.04	Installed at Vaira in the North profile as -4cm with new U-shaped tops on the PVC enclosures.
2014-01-29	Y0710013	GMP221	Installed	CO2 probe North Profile -0.08	Installed at Vaira in the North profile as -8cm with new U-shaped tops on the PVC enclosures.
2014-01-29	Y2030049	GMP222	Installed	CO2 probe East Profile -0.02	Installed at Vaira in the East profile as -2cm with new U-shaped tops on the PVC enclosures.
2014-01-29	Z2720015	GMP222	Installed	CO2 probe East Profile -0.04	East profile as -4cm with new U-shaped tops on the PVC enclosures.
2014-01-29	Y2009100	GMP221	Installed	CO2 probe East Profile -0.08	East profile as -8cm with new U-shaped tops on the PVC enclosures.
2014-01-29	G0230062	GMT222	Installed	CO2 probe West Profile -0.02	West profile as -2cm with new U-shaped tops on the PVC enclosures.
2014-01-29	Y0850004	GMP221	Installed	CO2 probe West Profile -0.04	West profile as -4cm with new U-shaped tops on the PVC enclosures.
2014-01-29	Y1720006	GMP221	Installed	CO2 probe West Profile -0.08	West profile as -8cm with new U-shaped tops on the PVC enclosures.
2014-03-18	G0230062	GMT222	Moved	CO2 probe West Profile -0.04	At Vaira in the West profile this probe was moved from the -2cm location to -4cm
2014-03-18	Y0850004	GMP221	Moved	CO2 probe West Profile -0.08	At Vaira in the West profile this probe was moved from the -4cm location to -8cm
2014-03-18	Y1720006	GMP221	Moved	CO2 probe West Profile -0.02	At Vaira in the West profile this probe was moved from the -8cm location to -2cm
2014-03-18	Y2009100	GMP221	Removed	CO2 probe East Profile -0.08	Removed from Vaira in the East profile due to malfunction.
2014-04-22	G0230061	GMT222	Moved	CO2 probe North Profile -0.04	At Vaira North profile, moved from -2cm to -4cm.
2014-04-22	Y1950005	GMP222	Moved	CO2 probe North Profile -0.08	At Vaira North profile, moved from -4cm to -8cm.
2014-04-22	Y0850004	GMP221	Removed	CO2 probe West Profile -0.02	Removed from Vaira West profile at -2cm, replaced by sn K1310103
2014-04-22	Y1720006	GMP221	Removed	0	Removed from Vaira West profile at -4cm, replaced by sn K1310102
2014-04-22	G0230062	GMT222	Removed	CO2 probe West Profile -0.08	Removed from Vaira West profile at -8cm, replaced by sn K1350101
2014-04-22	Y0710013	GMP221	Removed	CO2 probe North Profile -0.08	Removed from Vaira North profile at -8cm
2014-04-22	K1310103	GMP222	Installed	CO2 probe West Profile -0.02	Installed in the Varia West profile at -2cm replacing sn Y0850004
2014-04-22	K1310102	GMP222	Installed	CO2 probe West Profile -0.04	Installed in the Varia West profile at -4cm replacing sn Y1720006
2014-04-22	K1350101	GMP222	Installed	CO2 probe West Profile -0.02	Installed in the Varia West profile at -2cm replacing sn G0230062
2014-12-09	K1350103	GMP222	Location	CO2 probe West Profile -0.02	Vaira West profile at -2cm
2014-12-09	K1350102	GMP222	Location	CO2 probe West Profile -0.04	Vaira West profile at -4cm
2014-12-09	K1350101	GMP222	Location	CO2 probe West Profile -0.08	Vaira West profile at -8cm
2014-12-09	Y1950005	GMP222	Location	CO2 probe North Profile -0.08	Vaira North profile at -8cm - may have been at -4cm
2014-12-09	G0230061	GMT222	Location	CO2 probe North Profile -0.04	Vaira North profile at -4cm - may have been at -2cm
2014-12-09	G0230062	GMT222	Location	CO2 probe North Profile -0.02	Vaira North profile at -2cm - may have been at -8cm
2014-12-09	Z2720015	GMP222	Location	CO2 probe East Profile -0.02	Vaira East profile at -2cm
2014-12-09	Y2030049	GMP222	Location	CO2 probe East Profile -0.04	Vaira East profile at -4cm
2014-12-09	Y2009109	GMP222	Location	CO2 probe East Profile -0.08	Vaira East profile at -8cm
2015-11-03	G0230061	GMT222	Removed	CO2 probe North Profile -0.04	Removed from Vaira North profile at -4cm due to bad readings. Replaced by sn L2010068
2015-11-03	Y1950005	GMP222	Removed	CO2 probe North Profile -0.08	Removed from Vaira North profile at -8cm due to bad readings. Replaced by sn L2010070
2015-11-03	L2010068	GMM222	Installed	CO2 probe North Profile -0.04	Installed in Vaira North profile at -4cm to replace sn G0230061
2015-11-03	L2010070	GMM222	Installed	CO2 probe North Profile -0.04	Installed in Vaira North profile at -4cm to replace sn Y1950005
2016-02-04	Z2720015	GMP222	Removed	CO2 probe East Profile -0.04	Removed from Vaira East profile at -4cm for calibration
2016-02-04	K1350103	GMP222	Removed	CO2 probe West Profile -0.02	Removed from Vaira West profile at -2cm for calibration
2016-02-04	K1350102	GMP222	Removed	CO2 probe West Profile -0.04	Removed from Vaira West profile at -4cm for calibration
2016-02-04	K1350101	GMP222	Removed	CO2 probe West Profile -0.08	Removed from Vaira West profile at -8cm for calibration
2016-02-04	G0230062	GMT222	Removed	CO2 probe North Profile -0.02	Removed from Vaira North profile at -2cm for calibration
2016-02-04	L2010068	GMM222	Removed	CO2 probe North Profile -0.04	Removed from Vaira North profile at -4cm for calibration
2016-02-04	L2010070	GMM222	Removed	CO2 probe North Profile -0.08	Removed from Vaira North profile at -8cm for calibration
2016-02-23	Y2009109	GMP222	Installed	CO2 probe East Profile -0.02	Installed in the Vaira East profile at -2cm after lab calibration.
2016-02-23	K1310103	GMP222	Installed	CO2 probe East Profile -0.04	Installed in the Vaira East profile at -4cm after lab calibration.
2016-02-23	Y2030049	GMP222	Installed	CO2 probe East Profile -0.08	Installed in the Vaira East profile at -8cm after lab calibration. Using a new cable.
2016-02-23	K1350103	GMP222	Installed	CO2 probe West Profile -0.02	Installed in the Vaira West profile at -2cm after lab calibration.
2016-02-23	K1350102	GMP222	Installed	CO2 probe West Profile -0.04	Installed in the Vaira West profile at -4cm after lab calibration.
2016-02-23	K1350101	GMP222	Installed	CO2 probe West Profile -0.08	Installed in the Vaira West profile at -8cm after lab calibration.
2016-02-23	G0230062	GMT222	Installed	CO2 probe North Profile -0.02	Installed in the Vaira North profile at -2cm after lab calibration.
2016-02-23	L2010068	GMM222	Installed	CO2 probe North Profile -0.04	Installed in the Vaira North profile at -4cm after lab calibration.
2016-02-23	L2010070	GMM222	Installed	CO2 probe North Profile -0.08	Installed in the Vaira North profile at -8cm after lab calibration.
2017-08-25	L2010070	GMM222	Removed	CO2 probe North Profile -0.08	Removed from Vaira North profile, -8 position and brought back to the lab for calibration
2017-08-25	K1350103	GMP222	Removed	CO2 probe West Profile -0.02	Removed from Vaira from West profile -2 cm position for calibration
2017-08-25	K1350102	GMP222	Removed	CO2 probe West Profile -0.04	Removed from Vaira from West profile -4 cm position for calibration
2017-08-25	K1350101	GMP222	Removed	CO2 probe West Profile -0.08	Removed from Vaira from West profile -8 cm position for calibration
2017-08-25	G0230062	GMT222	Removed	CO2 probe North Profile -0.02	Removed from Vaira from North profile -2 cm position for calibration
2017-08-25	L2010068	GMM222	Removed	CO2 probe North Profile -0.04	Removed from Vaira from North profile -4 cm position for calibration
2017-08-25	Y2009109	GMP222	Removed	CO2 probe East Profile -0.02	Removed from Vaira from East profile -2 cm position for calibration. Probe labeled 4.
2017-08-25	K1310103	GMP222	Removed	CO2 probe East Profile -0.04	Removed from Vaira from East profile -4 cm position for calibration
2017-08-25	Y2030049	GMP222	Removed	CO2 probe East Profile -0.08	Removed from Vaira from East profile -8 cm position for calibration
2017-09-14	Y2009109	GMP222	Installed	CO2 probe East Profile -0.02	Reinstalled at Vaira in the East profile at -2cm after lab calibration.
2017-09-14	K1350102	GMP222	Installed	CO2 probe East Profile -0.04	Reinstalled at Vaira in the East profile at -4cm after lab calibration.
2017-09-14	Y2030049	GMP222	Installed	CO2 probe East Profile -0.08	Reinstalled at Vaira in the East profile at -8cm after lab calibration.
2017-09-14	G0230062	GMT222	Installed	CO2 probe North Profile -0.02	Reinstalled at Vaira in the North profile at -2cm after lab calibration.
2017-09-14	K1310103	GMP222	Installed	CO2 probe East Profile -0.04	Reinstalled at Vaira in the North profile at -4cm after lab calibration.
2017-09-14	L2010070	GMM222	Installed	CO2 probe North Profile -0.08	Reinstalled at Vaira in the North profile at -8cm after lab calibration.
2017-09-21	Y2030049	GMP222	Moved	CO2 probe North Profile -0.02	Moved from East profile at -8cm to North profile at -2cm
2017-09-21	G0230062	GMT222	Moved	CO2 probe North Profile -0.16	Moved from North profile at -2cm to North profile at -16cm
2017-09-21	K1310103	GMP222	Moved	CO2 probe East Profile -0.02	Moved from North profile at -4cm to East profile at -2cm
2017-09-21	Y2009109	GMP222	Moved	CO2 probe East Profile -0.08	Moved from East profile at -2cm to East profile at -8cm
2017-09-21	K1350102	GMP222	Moved	CO2 probe East Profile -0.16	Moved from East profile at -4cm to East profile at -16cm
2017-09-21	L2010070	GMM222	Location	CO2 probe North Profile -0.08	This probe did not change location
2017-09-21	GP20160042	GP-001	Installed	CO2 probe West Profile -0.02	Installed in the Vaira West profile at -2cm
2017-09-21	GP20170028	GP-001	Installed	CO2 probe West Profile -0.04	Installed in the Vaira West profile at -4cm
2017-09-21	GP20160117	GP-001	Installed	CO2 probe West Profile -0.08	Installed in the Vaira West profile at -8cm
2017-09-21	GP20160012	GP-001	Installed	CO2 probe West Profile -0.16	Installed in the Vaira West profile at -16cm
2017-10-05	K1310102	GMP222	Installed	CO2 probe East Profile -0.04	Installed at Vaira in the East profile at the -4cm location
2017-10-05	K1350101	GMP222	Installed	CO2 probe North Profile -0.04	Installed at Vaira in the North profile at the -4cm location
2017-11-29	K1310102	GMP222	Removed	CO2 probe East Profile -0.04	Removed from the 4cm location in the East profile at Vaira. This probe was giving erratic values
2017-11-29	L2010067	GMM222	Installed	CO2 probe East Profile -0.04	Installed in the 4cm location in the East profile at Vaira to replace a probe with erratic values.
2020-12-01	Y2030049	GMP222	Removed	CO2 probe North Profile -0.02	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-01	K1350101	GMP222	Removed	CO2 probe North Profile -0.04	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-01	L2010070	GMM222	Removed	CO2 probe North Profile -0.08	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-01	G0230062	GMT222	Removed	CO2 probe North Profile -0.16	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-01	K1310103	GMP222	Removed	CO2 probe East Profile -0.02	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-01	L2010067	GMM222	Removed	CO2 probe East Profile -0.04	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-01	Y2009109	GMP222	Removed	CO2 probe East Profile -0.08	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-01	K1350102	GMP222	Removed	CO2 probe East Profile -0.16	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2022-05-10	GP20170028	GP-001	Removed	CO2 probe West Profile -0.04	Removed with the last of the soil co2 system because data not good and to reduce power load.
2022-05-10	GP20160042	GP-001	Removed	CO2 probe West Profile -0.02	Removed with the last of the soil co2 system because data not good and to reduce power load.
2022-05-10	GP20160117	GP-001	Removed	CO2 probe West Profile -0.08	Removed with the last of the soil co2 system because data not good and to reduce power load.
2022-05-10	GP20160012	GP-001	Removed	CO2 probe West Profile -0.16	Removed with the last of the soil co2 system because data not good and to reduce power load.
Data Logger
2012-02-16	20139	CR10X	Installed		Installed at Vaira with the new soil CO2 system. The system is not running yet because we need longer cables for the Vaisala co2 probes.
2012-08-22	23865	CR1000	Installed		Installed with NL115 sn 6761 to collect flux data at the Vaira tower in parallel with winflux. This data logger is in the box with the sonic PSU.
2013-01-24	47108	CR1000	Installed		Installed the the computer box with NL115 sn 6761 to collect images from the Phenecam
2013-05-15	47108	CR1000	Removed		This CR1000 was removed from Vaira along with NL115 sn 6761 where they were used to collect images from the Starsot Phenocam. They were replaced by a Raspberry Pi
2015-01-21	23865	CR1000	Upgrade		I upgraded the OS from v24 to v27. OS v25 and above support CFM cards larger than 2GB.
2016-10-20	2113	CR6	Moved		Moved with radiometer test tripod from Twitchell Rice to Vaira Ranch to compare against Ione sensors.
2016-11-02	2113	CR6	Removed		Removed from Vaira with the radiometer inter-comparison system that was on a stand alone tripod.
2017-05-24	23865	CR1000	Removed		Removed from the Vaira Tower. Replaced by the new Licor GHG system from Ameriflux.
2017-08-17	2299	CR23X	Removed	Data Logger Met	Removed from Vaira where it was collecting met data. It was replaced by a CR1000.
2017-08-17	66250	CR1000	Installed	Data Logger Met	Installed at Vaira to collect the met data and replace the old CR23X.
2020-11-11	2299	CR23X	Installed	Data Logger Soil CO2	Installed at Vaira in the Soil CO2 system. The 0-5V range on the 23x avoids the problem of needing voltage dividers.
2020-12-01	20139	CR10X	Removed	Data Logger Soil CO2	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
2020-12-18	2299	CR23X	Location	Data Logger Soil CO2	Confirmed serial number and location
2022-05-10	2299	CR23X	Removed	Data Logger Soil CO2	Removed with the last of the soil co2 system because data not good and to reduce power load.
2023-08-29	4190	CR1000	Installed	none	Installed as part of the Arduino base RSB diffuse PAR mounted next to the BF3
Forced Diffusion
2017-10-18	20160005	eosFD	Installed	Forced Diffusion West	Installed at Vaira near the West soil CO2 profile. The chamber is on a collar, fastened down with cable ties and power with 12V from a DC-DC power converter.
2017-10-18	20160006	eosFD	Installed	Forced Diffusion East	Installed at Vaira near the East soil CO2 profile. The chamber is on a collar, fastened down with cable ties and power with 12V from a DC-DC power converter.
2017-10-25	20160004	eosFD	Installed	Forced Diffusion North	Installed near the North soil co2 profile at Vaira. This one wouldn't start because it got too hot in the sun last time.
2018-01-15	20160004	eosFD	Removed	Forced Diffusion North	Removed from near the North soil co2 profile for return to Eosense
2018-01-15	20160005	eosFD	Removed	Forced Diffusion West	Removed from near the West soil co2 profile for return to Eosense
2018-01-15	20160006	eosFD	Removed	Forced Diffusion East	Removed from near the East soil co2 profile for return to Eosense
2020-03-02	FD20200001	eosFD	Installed	Forced Diffusion West	Installed near the eosGP probe profile to the west. Power from the CR10X power plug.
2020-12-18	FD20200001	eosFD	Removed	Forced Diffusion West	Removed from Vaira West for testing to high temp reading in the lab. Replaced by sn FD20190028
2020-12-18	FD20190028	eosFD	Installed	Forced Diffusion West	Installed at Vaira West to replace sn FD20200001 for test of high temp readings in the lab.
2021-02-10	FD20200001	eosFD	Installed	Forced Diffusion North	Installed near the old north soil co2 profile. This unit has a homemade solar shield to try to keep it cooler. Could use a soil collar.
2021-03-17	FD20190028	eosFD	Removed	Forced Diffusion West	Removed from Vaira West for possible use at Hill Slough. Replaced by sn FD20180068.
2021-03-17	FD20180068	eosFD	Installed	Forced Diffusion West	Installed at Vaira to replace sn FD20190028 for possible use at Hill Slough.
2021-07-13	FD20200001	eosFD	Maintenance	Forced Diffusion North	Performance check done. Referenced to 400ppm. Average Flux: -0.1, 0.06 STDEV Average ATM: -58.5ppm, 40.5C Average Soil: -61.0ppm, 40.6C
2021-07-13	FD20180068	eosFD	Maintenance	Forced Diffusion West	Performance check done. Referenced to 400ppm. Average Flux: -0.0, 0.08 STDEV Average ATM: 610.7ppm, 49.6C Average Soil: 609.8ppm, 49.8C
2021-11-17	FD20180068	eosFD	Removed	Forced Diffusion West	Removed from Vaira West due to bad CO2 concentration readings
2021-12-02	FD20180047	eosFD	Installed	Forced Diffusion West	Installed at Varia soil co2 west to replace the chamber that was removed last time for bad data.
2023-12-13	FD20200001	eosFD	Moved	Forced Diffusion North	Moved from Vaira North location to the Tonzi Tree 1 location. waiting for one FD to be repaired by Eosense.
2024-03-26	FD20160001	eosFD	Installed	Forced Diffusion North	Installed in the north location at Vaira after factory repair.
2024-08-21	FD20180047	eosFD	Removed	Forced Diffusion West	Removed from Vaira West location due to bad CO2 readings
Gas Analyzer
2000-10-07	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed with the initial set up of the Vaira site. D/A settings: H2O 0-1000 mmol/m3, CO2 13-20 mmol/m3
2000-10-12	0042	LI-7500A	Calibration	Lab	Zero with N2 was 2.0, after running several weeks in the lab.Cal gas 402.25 read 411.1 ppm at P=101.31 kPa and T 23.17 C. Licor Dewpoint sensor read 14.57 Tdew. Vaisala standard read 13.9 C. We are using the Vaisala as the standard for the experiment. Rezeroed and spanned D/A #1, H2O mmol m-3 0v=0 5 v=1000 D/A #2, CO2 mmol m-3 0v=13 mmol m-3 5v=20 mmol m-3
2000-11-04	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0042 for calibration: H2O = 0-1000mmol/m3, CO2 = 10-25mmol/m3
2004-04-07	0035	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2000-11-04	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace existing 7500 sn 0042 for calibration: H2O = 0-1000mmol/m3, CO2 = 10-25mmol/m3
2004-04-07	0035	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2000-11-05	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed for calibration. Replaced by sn 0035
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2000-11-19	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace existing 7500 sn 0035 for calibration: H2O 0-1000 mmol/m3, CO2 13-20 mmol/m3
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2000-12-14	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0035 for calibration: H2O = 0-1000mmol/m3, CO2 = 13-20mmol/m3.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2001-03-22	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0041.
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2001-03-22	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration.
2009-04-02	0041	LI-7500A	Calibration	Lab	AGC = 56%, T = 24.1C, P = 100.0kPa N2 tank 1200psi, CO2 tank 1400psi 344.95ppm CO2 Last Calibration 1/7/2009 CO2 zero = 1.0024 -> 1.0026 CO2 span = 0.9868 -> 0.9872 H2O zero = 1.1031 -> 1.0377 H2O span = 0.7331 -> 0.7316
2001-11-10	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Tonzi-Tower for calibration. Replaced by sn 0042.
2009-04-02	0041	LI-7500A	Calibration	Lab	AGC = 56%, T = 24.1C, P = 100.0kPa N2 tank 1200psi, CO2 tank 1400psi 344.95ppm CO2 Last Calibration 1/7/2009 CO2 zero = 1.0024 -> 1.0026 CO2 span = 0.9868 -> 0.9872 H2O zero = 1.1031 -> 1.0377 H2O span = 0.7331 -> 0.7316
2001-11-10	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Tonzi to replace sn 0041 for calibration.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-02-28	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0035.
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2002-02-28	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration.
2004-04-07	0035	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-04-18	0042	LI-7500A	Location	Gas Analyzer CO2/H2O	Tried to swap out for calibration but replacement (sn 0073) was reading out of range. Left in place
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-05-09	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0065.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-05-09	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0042 for calibration.
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2002-06-20	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0073.
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2002-06-20	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration.
2010-03-18	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.46kPa, 17.08C, 58% AGC 12.8C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9587 -> 0.9576 offset -6.4ppm CO2 span 0.9973 -> 0.9960 offset +0.6ppm H2O zero 0.7325 -> 0.7346 offset +0.238g/m3 H2O span 0.9865 -> 1.0007 offset -0.2C SDM address 7
2002-07-19	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0042.
2010-03-18	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.46kPa, 17.08C, 58% AGC 12.8C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9587 -> 0.9576 offset -6.4ppm CO2 span 0.9973 -> 0.9960 offset +0.6ppm H2O zero 0.7325 -> 0.7346 offset +0.238g/m3 H2O span 0.9865 -> 1.0007 offset -0.2C SDM address 7
2002-07-19	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0073 for calibration.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-08-15	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0418.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-08-15	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0042 for calibration.
2010-03-18	0418	LI-7500A	Calibration	Lab	Calibrated in the lab 100.70kPa, 18.36C, 49% AGC 13.9C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9020 -> 0.9011 offset -3.18ppm CO2 span 1.0000 -> 1.0042 offset +3.5ppm H2O zero 0.8486 -> 0.8524 offset +0.410g/m3 H2O span 0.9807 -> 1.0097 offset 0.45C SDM address 3
2002-09-20	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0042.
2010-03-18	0418	LI-7500A	Calibration	Lab	Calibrated in the lab 100.70kPa, 18.36C, 49% AGC 13.9C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9020 -> 0.9011 offset -3.18ppm CO2 span 1.0000 -> 1.0042 offset +3.5ppm H2O zero 0.8486 -> 0.8524 offset +0.410g/m3 H2O span 0.9807 -> 1.0097 offset 0.45C SDM address 3
2002-09-20	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0418 for calibration.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-11-05	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0418.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2002-11-05	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0042 for calibration.
2010-03-18	0418	LI-7500A	Calibration	Lab	Calibrated in the lab 100.70kPa, 18.36C, 49% AGC 13.9C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9020 -> 0.9011 offset -3.18ppm CO2 span 1.0000 -> 1.0042 offset +3.5ppm H2O zero 0.8486 -> 0.8524 offset +0.410g/m3 H2O span 0.9807 -> 1.0097 offset 0.45C SDM address 3
2002-12-23	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0065.
2010-03-18	0418	LI-7500A	Calibration	Lab	Calibrated in the lab 100.70kPa, 18.36C, 49% AGC 13.9C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9020 -> 0.9011 offset -3.18ppm CO2 span 1.0000 -> 1.0042 offset +3.5ppm H2O zero 0.8486 -> 0.8524 offset +0.410g/m3 H2O span 0.9807 -> 1.0097 offset 0.45C SDM address 3
2002-12-23	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0418 for calibration.
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2003-04-06	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0042.
2010-03-18	0418	LI-7500A	Calibration	Lab	Calibrated in the lab 100.70kPa, 18.36C, 49% AGC 13.9C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9020 -> 0.9011 offset -3.18ppm CO2 span 1.0000 -> 1.0042 offset +3.5ppm H2O zero 0.8486 -> 0.8524 offset +0.410g/m3 H2O span 0.9807 -> 1.0097 offset 0.45C SDM address 3
2003-04-06	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0418 for calibration.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2003-05-09	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0073.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2003-05-09	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0042 for calibration.
2010-03-18	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.46kPa, 17.08C, 58% AGC 12.8C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9587 -> 0.9576 offset -6.4ppm CO2 span 0.9973 -> 0.9960 offset +0.6ppm H2O zero 0.7325 -> 0.7346 offset +0.238g/m3 H2O span 0.9865 -> 1.0007 offset -0.2C SDM address 7
2003-05-30	0065	LI-7500A	Moved	Gas Analyzer CO2/H2O	Moved from Tonzi-Floor to Vaira because the Floor sonic was dead and the Vaira 7500 box had a bad power connector
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2003-05-30	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira due to bad power connector on the box.
2010-03-18	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.46kPa, 17.08C, 58% AGC 12.8C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9587 -> 0.9576 offset -6.4ppm CO2 span 0.9973 -> 0.9960 offset +0.6ppm H2O zero 0.7325 -> 0.7346 offset +0.238g/m3 H2O span 0.9865 -> 1.0007 offset -0.2C SDM address 7
2003-06-20	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0042.
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2003-06-20	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration.
2004-04-07	0042	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2003-10-02	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0035.
2010-03-18	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.46kPa, 17.08C, 58% AGC 12.8C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9587 -> 0.9576 offset -6.4ppm CO2 span 0.9973 -> 0.9960 offset +0.6ppm H2O zero 0.7325 -> 0.7346 offset +0.238g/m3 H2O span 0.9865 -> 1.0007 offset -0.2C SDM address 7
2003-10-02	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0073 for calibration.
2004-04-07	0035	LI-7500A	Calibration	Lab	Calibrated in the lab after being recently returned from Licor. There is a change in the power wiring. Red/white is positive, green is negative. They also changed the delay to 240 ms.
2004-04-07	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0041
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2004-04-07	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration
2009-04-02	0041	LI-7500A	Calibration	Lab	AGC = 56%, T = 24.1C, P = 100.0kPa N2 tank 1200psi, CO2 tank 1400psi 344.95ppm CO2 Last Calibration 1/7/2009 CO2 zero = 1.0024 -> 1.0026 CO2 span = 0.9868 -> 0.9872 H2O zero = 1.1031 -> 1.0377 H2O span = 0.7331 -> 0.7316
2005-01-27	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira replacing current IRGA presumably for calibration
2009-12-03	0065	LI-7500A	Calibration	Lab	AGC = 62, Pressure = 99.73kPa, Temperature = 21.63C span CO2 = 594.7ppm, span H2O = 16.7C from dewpoint generator Last calibration Aug 26, 2009 Last CO2 zero = 0.8738, span = 0.9939 Last H2O zero = 0.6414, span = 1.0055 New CO2 zero = 0.8739, span = 0.9931 New H2O zero = 0.6378, span = 0.9992 Configuration downloaded and saved
2009-01-08	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibration. Replaced by sn 0041.
2010-03-18	0073	LI-7500A	Calibration	Lab	Calibrated in the lab 100.46kPa, 17.08C, 58% AGC 12.8C Td N2 tank 0.0 @ 700psi, CO2 tank 597.4ppm @ 200psi Last cal 11-4-2009 CO2 zero 0.9587 -> 0.9576 offset -6.4ppm CO2 span 0.9973 -> 0.9960 offset +0.6ppm H2O zero 0.7325 -> 0.7346 offset +0.238g/m3 H2O span 0.9865 -> 1.0007 offset -0.2C SDM address 7
2009-01-08	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0073 for calibration
2009-04-02	0041	LI-7500A	Calibration	Lab	AGC = 56%, T = 24.1C, P = 100.0kPa N2 tank 1200psi, CO2 tank 1400psi 344.95ppm CO2 Last Calibration 1/7/2009 CO2 zero = 1.0024 -> 1.0026 CO2 span = 0.9868 -> 0.9872 H2O zero = 1.1031 -> 1.0377 H2O span = 0.7331 -> 0.7316
2010-08-14	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Vaira tower by Siyan after lab calibration.
2010-11-16	0418	LI-7500A	Calibration	Lab	Last cal 2010-08-13, SMD 7 DAC1 H2O 0-1000 DAC2 CO2 10-25 AGC = 49%, T = 24.35C, P = 100.92kPa, Td = 12C Zero Air 1700psi, CO2 597.4ppm 200psi, Td = 9.6C CO2 zero = 0.9038-> 0.9017, offset -8.3ppm CO2 span = 1.0047-> 0.9983, offset +5.6ppm H2O zero = 0.8467-> 0.8479, offset +7.2mmol/m3 H2O span = 0.9841-> 0.9644, offset +0.43C
2010-10-07	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira Tower for calibration. sn 1594 swapped in.
2010-11-16	0418	LI-7500A	Calibration	Lab	Last cal 2010-08-13, SMD 7 DAC1 H2O 0-1000 DAC2 CO2 10-25 AGC = 49%, T = 24.35C, P = 100.92kPa, Td = 12C Zero Air 1700psi, CO2 597.4ppm 200psi, Td = 9.6C CO2 zero = 0.9038-> 0.9017, offset -8.3ppm CO2 span = 1.0047-> 0.9983, offset +5.6ppm H2O zero = 0.8467-> 0.8479, offset +7.2mmol/m3 H2O span = 0.9841-> 0.9644, offset +0.43C
2010-10-07	1594	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Vaira Tower so sn 0418 could be removed for calibration.
2011-01-19	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibrations.
2011-01-19	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	This sensor was installed on the Vaira tower after laboratory calibration. sn 1597 was removed.
2011-05-24	0065	LI-7500A	Calibration	Lab	Last calibration: 2011-04-21 AGC=62 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=99.67kPa, Tair=23.61C, Tdew=9.06C zero air at 1450psi, CO2 in air 597.4 at 0 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: -7.5ppm H2O span 0.9749 -> 1.014 Offset: -0.58ppm Notes:
2011-03-30	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Swapped off the Vaira tower for calibration. Replaced by sn 0418.
2011-05-24	0065	LI-7500A	Calibration	Lab	Last calibration: 2011-04-21 AGC=62 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=99.67kPa, Tair=23.61C, Tdew=9.06C zero air at 1450psi, CO2 in air 597.4 at 0 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: -7.5ppm H2O span 0.9749 -> 1.014 Offset: -0.58ppm Notes:
2011-03-30	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Swapped on to the Vaira tower to replace sn 0065 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
2011-07-06	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0073.
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
2011-07-06	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower after laboratory calibration. Replaced sn 0418.
2011-10-17	0073	LI-7500A	Calibration	Lab	Last calibration: 2011-10-17 AGC=56 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100kPa, Tair=21.8C, Tdew=5.6C dry air at 600psi, CO2 436.53 at 1900 Tdewspan=13.6 CO2 zero 0.9584 -> 0.9578 Offset: -2.00ppm CO2 span 1.0022 -> 1.0000 Offset: 1.09ppm H2O zero 0.7390 -> 0.7381 Offset: -0.12ppm H2O span 0.9873 -> 0.9940 Offset: 0.09ppm Notes: operated by Siyan Ma
2011-09-29	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration - replaced by sn 0042
2011-10-17	0073	LI-7500A	Calibration	Lab	Last calibration: 2011-10-17 AGC=56 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100kPa, Tair=21.8C, Tdew=5.6C dry air at 600psi, CO2 436.53 at 1900 Tdewspan=13.6 CO2 zero 0.9584 -> 0.9578 Offset: -2.00ppm CO2 span 1.0022 -> 1.0000 Offset: 1.09ppm H2O zero 0.7390 -> 0.7381 Offset: -0.12ppm H2O span 0.9873 -> 0.9940 Offset: 0.09ppm Notes: operated by Siyan Ma
2011-09-29	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Vaira tower to replave sn 0073 for calibration.
2011-12-13	0042	LI-7500A	Calibration	Lab	Last calibration: 2011-09-27 AGC=73 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.67kPa, Tair=23.42C, Tdew=4.10C Zero Air at 800psi, CO2 in Air 436.53 at 1900 Tdewspan=10.08 CO2 zero 0.9592 -> 0.9597 Offset: 2.0ppm CO2 span 0.9758 -> 0.9840 Offset: 5.23ppm H2O zero 0.7852 -> 0.7828 Offset: -6.0ppm H2O span 0.9532 -> 0.9341 Offset: 0.32ppm Notes: The signal from this IRGA seems noisey and the AGC is pretty high.
2011-10-13	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower due to no signal and reporting 100% AGC even with clean lenses.
2011-12-13	0042	LI-7500A	Calibration	Lab	Last calibration: 2011-09-27 AGC=73 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.67kPa, Tair=23.42C, Tdew=4.10C Zero Air at 800psi, CO2 in Air 436.53 at 1900 Tdewspan=10.08 CO2 zero 0.9592 -> 0.9597 Offset: 2.0ppm CO2 span 0.9758 -> 0.9840 Offset: 5.23ppm H2O zero 0.7852 -> 0.7828 Offset: -6.0ppm H2O span 0.9532 -> 0.9341 Offset: 0.32ppm Notes: The signal from this IRGA seems noisey and the AGC is pretty high.
2011-10-18	1594	LI-7500A	Installed	Gas Analyzer CO2/H2O	This IRGA was installed on the Vaira tower to replace Frank's IRGA that was installed temporarily.
2012-01-04	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	Swapped off of Vaira tower for calibration. Replaced with serial number ??.
2012-01-04	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to swap out sn 1594 for calibration.
2012-07-24	0073	LI-7500A	Calibration	Lab	Last calibration: 2012-01-03 AGC=60 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 0.9578 -> 0.9581 Offset: 1.01ppm CO2 span 1 -> 1.0042 Offset: 1.35ppm H2O zero 0.7381 -> 0.7305 Offset: -1.12ppm H2O span 0.994 -> 1.0154 Offset: 0.4ppm Notes: calibrated by Siyan
2012-05-18	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Swapped off the tower for calibration, replaced by sn 0042
2012-07-24	0073	LI-7500A	Calibration	Lab	Last calibration: 2012-01-03 AGC=60 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 0.9578 -> 0.9581 Offset: 1.01ppm CO2 span 1 -> 1.0042 Offset: 1.35ppm H2O zero 0.7381 -> 0.7305 Offset: -1.12ppm H2O span 0.994 -> 1.0154 Offset: 0.4ppm Notes: calibrated by Siyan
2012-05-18	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Swapped onto the to tower to replace sn 0073 for calibration
2012-08-02	0042	LI-7500A	Calibration	Lab	Last calibration: 2012-05-17 AGC=53 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.49kPa, Tair=21.28C, Tdew=11.87C Zero Air at 1900psi, CO2 in air 436.53 at 1400 Tdewspan=15.08 CO2 zero 0.9546 -> 0.9513 Offset: -12.72ppm CO2 span 1.0182 -> 1.0044 Offset: 7.97ppm H2O zero 0.8346 -> 0.8472 Offset: 72.5ppm H2O span 0.8284 -> 0.9696 Offset: -3.2ppm Notes: Relatively large offsets seem to counter similar large offsets seen at last calibration. H2O zero offset may be a typo.
2012-07-25	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0041.
2012-08-02	0042	LI-7500A	Calibration	Lab	Last calibration: 2012-05-17 AGC=53 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.49kPa, Tair=21.28C, Tdew=11.87C Zero Air at 1900psi, CO2 in air 436.53 at 1400 Tdewspan=15.08 CO2 zero 0.9546 -> 0.9513 Offset: -12.72ppm CO2 span 1.0182 -> 1.0044 Offset: 7.97ppm H2O zero 0.8346 -> 0.8472 Offset: 72.5ppm H2O span 0.8284 -> 0.9696 Offset: -3.2ppm Notes: Relatively large offsets seem to counter similar large offsets seen at last calibration. H2O zero offset may be a typo.
2012-07-25	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to replace sn 0042 for calibration.
2013-01-29	0041	LI-7500A	Calibration	Lab	Last calibration: 2012-07-24 AGC=52 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.65kPa, Tair=25.10C, Tdew=4.63C Zero air at 1700psi, CO2 in air 392.3 at 2000 Tdewspan=15.07 CO2 zero 1.0008 -> 1.0012 Offset: 1.35ppm CO2 span 1.0084 -> 1.0080 Offset: 0.3ppm H2O zero 0.8201 -> 0.8220 Offset: 10.8ppm H2O span 0.9947 -> 0.9980 Offset: 0.0ppm Notes: Very tight correspondence with last calibration
2012-10-24	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibration. Replaced by 0418
2013-01-29	0041	LI-7500A	Calibration	Lab	Last calibration: 2012-07-24 AGC=52 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.65kPa, Tair=25.10C, Tdew=4.63C Zero air at 1700psi, CO2 in air 392.3 at 2000 Tdewspan=15.07 CO2 zero 1.0008 -> 1.0012 Offset: 1.35ppm CO2 span 1.0084 -> 1.0080 Offset: 0.3ppm H2O zero 0.8201 -> 0.8220 Offset: 10.8ppm H2O span 0.9947 -> 0.9980 Offset: 0.0ppm Notes: Very tight correspondence with last calibration
2012-10-24	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to swap out 0041 for calibration.
2013-04-18	0418	LI-7500A	Calibration	Lab	Last calibration: 2012-10-23 AGC=43 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.71kPa, Tair=22.02C, Tdew=4.42C Zero air at 1700psi, CO2 in air 392.30 at 1700 Tdewspan=15.04 CO2 zero 0.9011 -> 0.9017 Offset: 2.26ppm CO2 span 1.0085 -> 1.0104 Offset: -0.9ppm H2O zero 0.8516 -> 0.8497 Offset: -10.7ppm H2O span 1 -> 0.9871 Offset: ppm Notes:
2013-02-27	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower by Siyan for calibration. Replaced by sn 0976.
2013-04-18	0418	LI-7500A	Calibration	Lab	Last calibration: 2012-10-23 AGC=43 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.71kPa, Tair=22.02C, Tdew=4.42C Zero air at 1700psi, CO2 in air 392.30 at 1700 Tdewspan=15.04 CO2 zero 0.9011 -> 0.9017 Offset: 2.26ppm CO2 span 1.0085 -> 1.0104 Offset: -0.9ppm H2O zero 0.8516 -> 0.8497 Offset: -10.7ppm H2O span 1 -> 0.9871 Offset: ppm Notes:
2013-02-27	0976	LI-7500	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower by Siyan to replace sn 0418 for calibration.
2013-04-26	0976	LI-7500	Calibration	Lab	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:
2013-04-24	0976	LI-7500	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0042
2013-04-26	0976	LI-7500	Calibration	Lab	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:
2013-04-24	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to swap out sn 0976 for calibration
2013-08-20	0042	LI-7500A	Calibration	Lab	Last calibration: 2013-04-23 AGC=54 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.28kPa, Tair=24.51C, Tdew=13.40C Zero Air at 1700psi, God CO2 421.22 at 1600 Tdewspan=15.19 CO2 zero 0.9504 -> 0.9503 Offset: -0.16ppm CO2 span 1.0033 -> 1.0 Offset: 1.23ppm H2O zero 0.8499 -> 0.8499 Offset: -0.06ppm H2O span 0.9779 -> 0.9929 Offset: -0.33ppm Notes:
2013-08-13	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn0418
2013-08-20	0042	LI-7500A	Calibration	Lab	Last calibration: 2013-04-23 AGC=54 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.28kPa, Tair=24.51C, Tdew=13.40C Zero Air at 1700psi, God CO2 421.22 at 1600 Tdewspan=15.19 CO2 zero 0.9504 -> 0.9503 Offset: -0.16ppm CO2 span 1.0033 -> 1.0 Offset: 1.23ppm H2O zero 0.8499 -> 0.8499 Offset: -0.06ppm H2O span 0.9779 -> 0.9929 Offset: -0.33ppm Notes:
2013-08-13	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn0042 for calibration
2013-12-05	0418	LI-7500A	Calibration	Lab	Last calibration: 2013-08-12 AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.09kPa, Tair=22.90C, Tdew=-7.14C Zero air at 1500psi, God CO2 421.22 at 1500 Tdewspan=15.17 CO2 zero 0.9014 -> 0.9014 Offset: -0.3ppm CO2 span 1.0027 -> 1.0016 Offset: 0.48ppm H2O zero 0.8522 -> 0.8521 Offset: -0.3ppm H2O span 0.9825 -> 0.9806 Offset: 0.02ppm Notes: The serial connector on the bottom of the box had a broken pin. I replaced it with one from the old sn 0065 box.
2013-11-27	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibration. Replaced by sn 0041
2013-12-05	0418	LI-7500A	Calibration	Lab	Last calibration: 2013-08-12 AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=101.09kPa, Tair=22.90C, Tdew=-7.14C Zero air at 1500psi, God CO2 421.22 at 1500 Tdewspan=15.17 CO2 zero 0.9014 -> 0.9014 Offset: -0.3ppm CO2 span 1.0027 -> 1.0016 Offset: 0.48ppm H2O zero 0.8522 -> 0.8521 Offset: -0.3ppm H2O span 0.9825 -> 0.9806 Offset: 0.02ppm Notes: The serial connector on the bottom of the box had a broken pin. I replaced it with one from the old sn 0065 box.
2013-11-27	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0418 for calibration
2014-06-04	0041	LI-7500A	Calibration	Lab	Last calibration: 2013-11-20 AGC=51 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.11kPa, Tair=21.17C, Tdew=11.50C Zero Air at 1250psi, God CO2 421.22 at 1500 Tdewspan=15.27 CO2 zero 0.9984 -> 1.0009 Offset: 8.18ppm CO2 span 1.0139 -> 1.0101 Offset: 2.03ppm H2O zero 0.8224 -> 0.8235 Offset: 6.5ppm H2O span 0.9991 -> 1.0013 Offset: -0.05ppm Notes: Both the CO2 and H2O span seemed a little less stable that usual - CO2 +-0.2ppm, H2O +-0.5C
2014-03-18	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0035.
2014-06-04	0041	LI-7500A	Calibration	Lab	Last calibration: 2013-11-20 AGC=51 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.11kPa, Tair=21.17C, Tdew=11.50C Zero Air at 1250psi, God CO2 421.22 at 1500 Tdewspan=15.27 CO2 zero 0.9984 -> 1.0009 Offset: 8.18ppm CO2 span 1.0139 -> 1.0101 Offset: 2.03ppm H2O zero 0.8224 -> 0.8235 Offset: 6.5ppm H2O span 0.9991 -> 1.0013 Offset: -0.05ppm Notes: Both the CO2 and H2O span seemed a little less stable that usual - CO2 +-0.2ppm, H2O +-0.5C
2014-03-18	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0041 for calibration.
2014-09-09	0035	LI-7500A	Calibration	Lab	Last calibration: 2014-03-17 AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.49kPa, Tair=23.33C, Tdew=13.88C Zero Air at 1000psi, God CO2 421.22 at 1300 Tdewspan=15.25 CO2 zero 0.9389 -> 0.9386 Offset: -1.05ppm CO2 span 1.0139 -> 1.0181 Offset: -3.02ppm H2O zero 0.8932 -> 0.8957 Offset: 20ppm H2O span 0.9462 -> 0.9838 Offset: -0.79ppm Notes: The signal seems a little noisy: +-1ppm CO2 and +-20mmol/m3 H2O
2014-06-25	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0073.
2014-09-09	0035	LI-7500A	Calibration	Lab	Last calibration: 2014-03-17 AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.49kPa, Tair=23.33C, Tdew=13.88C Zero Air at 1000psi, God CO2 421.22 at 1300 Tdewspan=15.25 CO2 zero 0.9389 -> 0.9386 Offset: -1.05ppm CO2 span 1.0139 -> 1.0181 Offset: -3.02ppm H2O zero 0.8932 -> 0.8957 Offset: 20ppm H2O span 0.9462 -> 0.9838 Offset: -0.79ppm Notes: The signal seems a little noisy: +-1ppm CO2 and +-20mmol/m3 H2O
2014-06-25	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0035 for calibration.
2014-09-23	0073	LI-7500A	Calibration	Lab	Last calibration: 2014-06-24 AGC=59 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.46kPa, Tair=25.61C, Tdew=17.80C Zero Air at 1050psi, God CO2 421.22 at 1350 Tdewspan=15.80 CO2 zero 0.958 -> 0.9586 Offset: 2.05ppm CO2 span 1.0018 -> 1.0023 Offset: -0.37ppm H2O zero 0.7389 -> 0.7382 Offset: -3.9ppm H2O span 1.0138 -> 1.0109 Offset: 0.06ppm Notes:
2014-09-11	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0035.
2014-09-23	0073	LI-7500A	Calibration	Lab	Last calibration: 2014-06-24 AGC=59 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.46kPa, Tair=25.61C, Tdew=17.80C Zero Air at 1050psi, God CO2 421.22 at 1350 Tdewspan=15.80 CO2 zero 0.958 -> 0.9586 Offset: 2.05ppm CO2 span 1.0018 -> 1.0023 Offset: -0.37ppm H2O zero 0.7389 -> 0.7382 Offset: -3.9ppm H2O span 1.0138 -> 1.0109 Offset: 0.06ppm Notes:
2014-09-11	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0073 for calibration.
2015-04-06	0035	LI-7500A	Calibration	Lab	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.
2015-01-07	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removes from the Vaira Tower for calibration. Replaced by sn 0976
2015-04-06	0035	LI-7500A	Calibration	Lab	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.
2015-01-07	0976	LI-7500	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to replace 0035 for calibration.
2015-07-15	0976	LI-7500	Calibration	Lab	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:
2015-04-21	0976	LI-7500	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0041
2015-07-15	0976	LI-7500	Calibration	Lab	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:
2015-04-21	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0976 for calibration.
2015-10-28	0041	LI-7500A	Calibration	Lab	Last calibration: 2015-04-20 AGC=51 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.68kPa, Tair=21.33C, Tdew=13.66C Zero Air at 750psi, God CO2 421.22 at 750 Tdewspan=11.08 CO2 zero 1.0002 -> 1.0004 Offset: 0.68ppm CO2 span 1.0115 -> 1.0107 Offset: 0.38ppm H2O zero 0.8243 -> 0.8247 Offset: 2.3ppm H2O span 0.9991 -> 0.8836 Offset: 1.96ppm Notes:
2015-07-20	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0976
2015-10-28	0041	LI-7500A	Calibration	Lab	Last calibration: 2015-04-20 AGC=51 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.68kPa, Tair=21.33C, Tdew=13.66C Zero Air at 750psi, God CO2 421.22 at 750 Tdewspan=11.08 CO2 zero 1.0002 -> 1.0004 Offset: 0.68ppm CO2 span 1.0115 -> 1.0107 Offset: 0.38ppm H2O zero 0.8243 -> 0.8247 Offset: 2.3ppm H2O span 0.9991 -> 0.8836 Offset: 1.96ppm Notes:
2015-07-20	0976	LI-7500	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to replace sn 0041 for calibration
2016-02-22	0976	LI-7500	Calibration	Lab	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:
2015-11-03	0976	LI-7500	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibration. Replaced by sn 0041.
2016-02-22	0976	LI-7500	Calibration	Lab	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:
2015-11-03	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to replace sn 0976 for calibration.
2016-05-05	0041	LI-7500A	Calibration	Lab	Last calibration: 2015-10-28 AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.03kPa, Tair=19.99C, Tdew=9.10C Zero Air at 600psi, God CO2 421.22 at 500 Tdewspan=11.09 CO2 zero 1.0004 -> 1.0002 Offset: -0.7ppm CO2 span 1.0107 -> 1.0128 Offset: -1.12ppm H2O zero 0.8247 -> 0.8257 Offset: 5.0ppm H2O span 0.8836 -> 1.0037 Offset: -2.5ppm Notes: Large offset in H2O span. I think a mistake was made last time when the dew point was set to the H2O mmol/mol value.
2016-02-23	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0976.
2016-05-05	0041	LI-7500A	Calibration	Lab	Last calibration: 2015-10-28 AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.03kPa, Tair=19.99C, Tdew=9.10C Zero Air at 600psi, God CO2 421.22 at 500 Tdewspan=11.09 CO2 zero 1.0004 -> 1.0002 Offset: -0.7ppm CO2 span 1.0107 -> 1.0128 Offset: -1.12ppm H2O zero 0.8247 -> 0.8257 Offset: 5.0ppm H2O span 0.8836 -> 1.0037 Offset: -2.5ppm Notes: Large offset in H2O span. I think a mistake was made last time when the dew point was set to the H2O mmol/mol value.
2016-02-23	0976	LI-7500	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0041 for calibration.
2016-08-15	0976	LI-7500	Calibration	Lab	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
2016-05-10	0976	LI-7500	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0073.
2016-08-15	0976	LI-7500	Calibration	Lab	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
2016-05-10	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0976 for calibration.
2016-12-05	0073	LI-7500A	Calibration	Lab	Last calibration: 2016-05-05 AGC=59 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.65kPa, Tair=20.82C, Tdew=8.53C Zero Air at 400psi, God CO2 421.22 at 450 Tdewspan=16.00 CO2 zero 0.9579 -> 0.9576 Offset: ppm CO2 span 1.0029 -> 1.0707 Offset: -0.30ppm H2O zero 0.7385 -> 0.7391 Offset: 0.09ppm H2O span 1.0159 -> 1.0255 Offset: -0.02ppm Notes:
2016-08-23	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration, replaced by sn 0042
2016-12-05	0073	LI-7500A	Calibration	Lab	Last calibration: 2016-05-05 AGC=59 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.65kPa, Tair=20.82C, Tdew=8.53C Zero Air at 400psi, God CO2 421.22 at 450 Tdewspan=16.00 CO2 zero 0.9579 -> 0.9576 Offset: ppm CO2 span 1.0029 -> 1.0707 Offset: -0.30ppm H2O zero 0.7385 -> 0.7391 Offset: 0.09ppm H2O span 1.0159 -> 1.0255 Offset: -0.02ppm Notes:
2016-08-23	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0073 for calibration.
2017-05-05	0042	LI-7500A	Calibration	Lab	Last calibration: 2016-08-15 AGC=99.9 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=25.5C, Tdew=7.8C Zero Air at 1600psi, LBL Air 513.22 at 350 Tdewspan=16.00 CO2 zero 0.9504 -> .9847 Offset: -6.7ppm CO2 span 1.001 -> 1.0244 Offset: -15.52ppm H2O zero 0.8519 -> .8434 Offset: -54.8ppm H2O span 1.003 -> 1.1404 Offset: -2.72ppm Notes: First calibration since upgrade from LI-7500 to LI-7500A
2016-12-07	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibration. Replaced by sn 0041.
2017-05-05	0042	LI-7500A	Calibration	Lab	Last calibration: 2016-08-15 AGC=99.9 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=25.5C, Tdew=7.8C Zero Air at 1600psi, LBL Air 513.22 at 350 Tdewspan=16.00 CO2 zero 0.9504 -> .9847 Offset: -6.7ppm CO2 span 1.001 -> 1.0244 Offset: -15.52ppm H2O zero 0.8519 -> .8434 Offset: -54.8ppm H2O span 1.003 -> 1.1404 Offset: -2.72ppm Notes: First calibration since upgrade from LI-7500 to LI-7500A
2016-12-07	0041	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to replace sn 0042 for calibration.
2017-05-05	0041	LI-7500A	Calibration	Lab	Last calibration: 2016-12-05 AGC=99.9 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=22.7C, Tdew=9.22C Zero Air at 1600psi, LBL Air 513.22 at 400 Tdewspan=16.00 CO2 zero 1.0004 -> .9969 Offset: -11.7ppm CO2 span 1.0124 -> 1.0177 Offset: -3.72ppm H2O zero 0.8255 -> .8210 Offset: -25.0ppm H2O span 1 -> 1.0320 Offset: -.69ppm Notes: First calibration since upgrade from LI-7500 to LI-7500A
2017-04-10	0041	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0073.
2017-05-05	0041	LI-7500A	Calibration	Lab	Last calibration: 2016-12-05 AGC=99.9 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=22.7C, Tdew=9.22C Zero Air at 1600psi, LBL Air 513.22 at 400 Tdewspan=16.00 CO2 zero 1.0004 -> .9969 Offset: -11.7ppm CO2 span 1.0124 -> 1.0177 Offset: -3.72ppm H2O zero 0.8255 -> .8210 Offset: -25.0ppm H2O span 1 -> 1.0320 Offset: -.69ppm Notes: First calibration since upgrade from LI-7500 to LI-7500A
2017-04-10	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0041 for calibration.
2017-06-13	0073	LI-7500A	Calibration	Lab	Last calibration: 2017-04-07 AGC=100.3 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=21.9C, Tdew=11.2C Zero Air at 1500psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.9578 -> .9567 Offset: -3.62ppm CO2 span 1.0036 -> 1.0065 Offset: -1.63ppm H2O zero 0.7388 -> .7342 Offset: -26.9ppm H2O span 1.0096 -> 1.0251 Offset: -0.36ppm Notes: First calibration since upgrade from 7500 to 7500A. Copied coefficients for CO2 (A, B, C, D, E, XS, Z) and H2O (A, B, C, XS, Z) from sn0073_20170118post.l75 before calibration. Took about 9-10 minutes for H2O to go down to 0, took about 1-2 minutes for CO2 to reach span, and took ~9 minutes for H2O to reach span. Set span T to 15.99 in software for a 16.00 Span Dew Point.
2017-04-10	75H-2150	LI-7500A	Installed	Gas Analyzer CO2/H2O	Added to the Vaira eddy tower for the Ameriflux inter-comparison and the transition to newer LI-7500A eddy systems.
2017-05-30	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2017-03-14 AGC=97.2 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=19.9C, Tdew=12.2C Zero Air at 1050psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.9014 -> .9024 Offset: 4.23ppm CO2 span 1 -> 1.0194 Offset: -9.8ppm H2O zero 0.8651 -> .8664 Offset: 9.3ppm H2O span 1.0094 -> .9975 Offset: .26ppm Notes:
2017-05-11	75H-2150	LI-7500A	Removed		Removed from Vaira because the Ameriflux intercomparison finished and because we received new 7500A and sonics from Ameriflux. This head was replaced with sn 0035 that has been freshly upgraded from 7500 to 7500A.
2017-05-30	75H-2150	LI-7500A	Calibration	Lab	Last calibration: 2017-03-14 AGC=97.2 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=19.9C, Tdew=12.2C Zero Air at 1050psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.9014 -> .9024 Offset: 4.23ppm CO2 span 1 -> 1.0194 Offset: -9.8ppm H2O zero 0.8651 -> .8664 Offset: 9.3ppm H2O span 1.0094 -> .9975 Offset: .26ppm Notes:
2017-05-11	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2150.
2017-09-05	0035	LI-7500A	Calibration	Lab	Last calibration: 2017-05-08 AGC=99.8 SDM=0 DAC1=0 DAC2=0 Ambient P=100.4kPa, Tair=29.1C, Tdew=18.4C Zero Air at 1000psi, AMP Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9381 -> .9373 Offset: -3.34ppm CO2 span 1.023 -> 1.0084 Offset: 7.67ppm H2O zero 0.8974 -> .8976 Offset: .8ppm H2O span 1.0261 -> 1.0141 Offset: .25ppm Notes:
2017-05-24	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower. Replaced by the new Licor GHG system from Ameriflux.
2017-06-13	0073	LI-7500A	Calibration	Lab	Last calibration: 2017-04-07 AGC=100.3 SDM= DAC1= DAC2= Ambient P=100.2kPa, Tair=21.9C, Tdew=11.2C Zero Air at 1500psi, NOAA Air 402.69 at 1600 Tdewspan=16.00 CO2 zero 0.9578 -> .9567 Offset: -3.62ppm CO2 span 1.0036 -> 1.0065 Offset: -1.63ppm H2O zero 0.7388 -> .7342 Offset: -26.9ppm H2O span 1.0096 -> 1.0251 Offset: -0.36ppm Notes: First calibration since upgrade from 7500 to 7500A. Copied coefficients for CO2 (A, B, C, D, E, XS, Z) and H2O (A, B, C, XS, Z) from sn0073_20170118post.l75 before calibration. Took about 9-10 minutes for H2O to go down to 0, took about 1-2 minutes for CO2 to reach span, and took ~9 minutes for H2O to reach span. Set span T to 15.99 in software for a 16.00 Span Dew Point.
2017-08-17	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibration. Replaced by sn 75H-2514.
2017-09-05	0035	LI-7500A	Calibration	Lab	Last calibration: 2017-05-08 AGC=99.8 SDM=0 DAC1=0 DAC2=0 Ambient P=100.4kPa, Tair=29.1C, Tdew=18.4C Zero Air at 1000psi, AMP Air 408.97 at 2100 Tdewspan=16.00 CO2 zero 0.9381 -> .9373 Offset: -3.34ppm CO2 span 1.023 -> 1.0084 Offset: 7.67ppm H2O zero 0.8974 -> .8976 Offset: .8ppm H2O span 1.0261 -> 1.0141 Offset: .25ppm Notes:
2017-08-17	75H-2514	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to replace sn 0035 for calibration
2017-12-15	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2017-08-14 AGC=102.8 SDM=0 DAC1=0 DAC2=0 Ambient P=100.7kPa, Tair=22.1C, Tdew=7.9C Zero Air at 250psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.905 -> .9052 Offset: .8ppm CO2 span 1.0107 -> 1.0118 Offset: -.5ppm H2O zero 0.8378 -> .8385 Offset: 4.3ppm H2O span 1.0094 -> 1.0103 Offset: -.01ppm Notes:
2017-11-29	75H-2514	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 0065
2017-12-15	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2017-08-14 AGC=102.8 SDM=0 DAC1=0 DAC2=0 Ambient P=100.7kPa, Tair=22.1C, Tdew=7.9C Zero Air at 250psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.905 -> .9052 Offset: .8ppm CO2 span 1.0107 -> 1.0118 Offset: -.5ppm H2O zero 0.8378 -> .8385 Offset: 4.3ppm H2O span 1.0094 -> 1.0103 Offset: -.01ppm Notes:
2017-11-29	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 75H-2514 for calibration.
2018-04-04	0065	LI-7500A	Calibration	Lab	Last calibration: 2017-11-28 AGC=100.4 SDM=0 DAC1=0 DAC2=0 Ambient P=100.8kPa, Tair=22.5C, Tdew=9.3C Zero Air at 100psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.8906 -> .8905 Offset: -.52ppm CO2 span 1.0163 -> 1.0231 Offset: -3.35ppm H2O zero 0.7083 -> .7082 Offset: -.7ppm H2O span 1.0126 -> 1.0185 Offset: -.13ppm Notes: Calibrated on LI-7550 sn 674 with 8.5.0 embedded software version
2018-03-06	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed for calibration and replaced by sn 75H-2182.
2018-04-04	0065	LI-7500A	Calibration	Lab	Last calibration: 2017-11-28 AGC=100.4 SDM=0 DAC1=0 DAC2=0 Ambient P=100.8kPa, Tair=22.5C, Tdew=9.3C Zero Air at 100psi, LBL Air 408.97 at 1700 Tdewspan=16.00 CO2 zero 0.8906 -> .8905 Offset: -.52ppm CO2 span 1.0163 -> 1.0231 Offset: -3.35ppm H2O zero 0.7083 -> .7082 Offset: -.7ppm H2O span 1.0126 -> 1.0185 Offset: -.13ppm Notes: Calibrated on LI-7550 sn 674 with 8.5.0 embedded software version
2018-03-06	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065.
2018-07-10	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2018-03-05 AGC=87 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=26.3C, Tdew=13.00C Zero Air at 200psi, LBL Air 408.97 at 1400 Tdewspan=16.00 CO2 zero 0.8844 -> .8841 Offset: -.91ppm CO2 span 1.0217 -> 1.0168 Offset: 2.33ppm H2O zero 0.8453 -> .845 Offset: -1.7ppm H2O span 1.0169 -> 1.0202 Offset: -.08ppm Notes:
2018-06-26	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 1594
2018-07-10	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2018-03-05 AGC=87 SDM= DAC1= DAC2= Ambient P=100.6kPa, Tair=26.3C, Tdew=13.00C Zero Air at 200psi, LBL Air 408.97 at 1400 Tdewspan=16.00 CO2 zero 0.8844 -> .8841 Offset: -.91ppm CO2 span 1.0217 -> 1.0168 Offset: 2.33ppm H2O zero 0.8453 -> .845 Offset: -1.7ppm H2O span 1.0169 -> 1.0202 Offset: -.08ppm Notes:
2018-06-26	1594	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace en 75H-2182 for calibration
2018-09-27	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira Tower for calibration. Replaced by sn 0065.
2018-09-27	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira Tower to replace sn 1594 for calibration.
2019-02-11	0065	LI-7500A	Calibration	Lab	Last calibration: 2018-09-26 AGC= SDM= DAC1= DAC2= Ambient P=kPa, Tair=C, Tdew=C at psi, at Tdewspan=12.00 CO2 zero 0.8903 -> .8920 Offset: ppm CO2 span 1.0184 -> 1.0073 Offset: ppm H2O zero 0.7086 -> 07263 Offset: ppm H2O span 1.0155 -> 1.0104 Offset: ppm Notes: CX=34338.1, WX=34091.7. Calibrated at Licor factory after source/chopper replacement.
2018-10-17	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira due to no CO2, H2O or Signal Strength - maybe bad source or detector. Replaced by sn 0418
2019-02-11	0065	LI-7500A	Calibration	Lab	Last calibration: 2018-09-26 AGC= SDM= DAC1= DAC2= Ambient P=kPa, Tair=C, Tdew=C at psi, at Tdewspan=12.00 CO2 zero 0.8903 -> .8920 Offset: ppm CO2 span 1.0184 -> 1.0073 Offset: ppm H2O zero 0.7086 -> 07263 Offset: ppm H2O span 1.0155 -> 1.0104 Offset: ppm Notes: CX=34338.1, WX=34091.7. Calibrated at Licor factory after source/chopper replacement.
2018-10-17	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Vaira to replace sn 0065 that had no CO2, H2O or signal strength.
2019-01-07	0418	LI-7500A	Calibration	Lab	Last calibration: 2018-10-10 AGC=97.2 SDM=0 DAC1=0 DAC2=0 Ambient P=100.9kPa, Tair=17.9C, Tdew=9.7C Zero Air at 1200psi, AMP Air 408.97 at 900 Tdewspan=16.00 CO2 zero 0.8982 -> .8992 Offset: 3.69ppm CO2 span 0.9965 -> 1.0033 Offset: -3.58ppm H2O zero 0.8454 -> .8465 Offset: 6.1ppm H2O span 0.9813 -> .9832 Offset: -.03ppm Notes:
2019-01-04	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from the Vaira tower for calibration. Replaced by sn 75H-2176.
2019-01-07	0418	LI-7500A	Calibration	Lab	Last calibration: 2018-10-10 AGC=97.2 SDM=0 DAC1=0 DAC2=0 Ambient P=100.9kPa, Tair=17.9C, Tdew=9.7C Zero Air at 1200psi, AMP Air 408.97 at 900 Tdewspan=16.00 CO2 zero 0.8982 -> .8992 Offset: 3.69ppm CO2 span 0.9965 -> 1.0033 Offset: -3.58ppm H2O zero 0.8454 -> .8465 Offset: 6.1ppm H2O span 0.9813 -> .9832 Offset: -.03ppm Notes:
2019-01-04	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 0418 for calibration.
2019-07-24	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2019-01-02 AGC=102.0 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=26.1C, Tdew=14.5C Zero Air at 1000psi, AMP CA4396 408.97 at 800 Tdewspan=20.00 CO2 zero 0.8676 -> .8672 Offset: -2.14ppm CO2 span 1.0114 -> 1.0061 Offset: 2.7ppm H2O zero 0.8525 -> .8521 Offset: -2.4ppm H2O span 0.8206 -> .9182 Offset: .05ppm Notes: When SS was 102.0, I reset it to 100.
2019-04-30	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2668.
2019-07-24	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2019-01-02 AGC=102.0 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=26.1C, Tdew=14.5C Zero Air at 1000psi, AMP CA4396 408.97 at 800 Tdewspan=20.00 CO2 zero 0.8676 -> .8672 Offset: -2.14ppm CO2 span 1.0114 -> 1.0061 Offset: 2.7ppm H2O zero 0.8525 -> .8521 Offset: -2.4ppm H2O span 0.8206 -> .9182 Offset: .05ppm Notes: When SS was 102.0, I reset it to 100.
2019-04-30	75H-2668	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on the Vaira tower to replace sn 74H-2176 for calibration.
2019-10-30	75H-2668	LI-7500A	Calibration	Lab	Last calibration: 2019-04-26 AGC=100.3 SDM=0 DAC1=- DAC2=- Ambient P=101.0kPa, Tair=26.9C, Tdew=-10.7C Zero Air at 900psi, AMP CA04396 408.97 at 800 Tdewspan=20.0 CO2 zero 0.9391 -> 0.9393 Offset: 1.05ppm CO2 span 1.0169 -> 1.0160 Offset: 0.53ppm H2O zero 0.9069 -> 0.9096 Offset: -0.9ppm H2O span 1.0139 -> 1.0143 Offset: 0ppm Notes: Ambient air was very dry. Joe
2019-08-22	75H-2668	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0418.
2019-10-30	75H-2668	LI-7500A	Calibration	Lab	Last calibration: 2019-04-26 AGC=100.3 SDM=0 DAC1=- DAC2=- Ambient P=101.0kPa, Tair=26.9C, Tdew=-10.7C Zero Air at 900psi, AMP CA04396 408.97 at 800 Tdewspan=20.0 CO2 zero 0.9391 -> 0.9393 Offset: 1.05ppm CO2 span 1.0169 -> 1.0160 Offset: 0.53ppm H2O zero 0.9069 -> 0.9096 Offset: -0.9ppm H2O span 1.0139 -> 1.0143 Offset: 0ppm Notes: Ambient air was very dry. Joe
2019-08-22	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Vaira to replace sn 75H-2668 for calibration.
2019-11-18	0418	LI-7500A	Calibration	Lab	Last calibration: 2019-08-21 AGC=94.4 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=25.2C, Tdew=8.5C Zero Air at 950psi, AMP CA04396 408.97 at 600 Tdewspan=20.0 CO2 zero 0.899 -> 0.8991 Offset: 0.35ppm CO2 span 0.9976 -> 0.9988 Offset: -0.72ppm H2O zero 0.8466 -> 0.8482 Offset: 9.4ppm H2O span 0.9818 -> 0.9812 Offset: 0.03ppm Notes: Removed from Vaira due to no readings but has test fine in the lab - no missing data in about a week.
2019-11-07	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Tonzi Floor for use at Vaira where the 7500 head had died probably with a bad source or detector.
2020-02-03	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2019-08-21 AGC=98.8 SDM=0 DAC1=- DAC2=- Ambient P=100.9kPa, Tair=22.9C, Tdew=-7.4C Zero Air at 850psi, AMP CA04396 408.97 at 575 Tdewspan=16.0 CO2 zero 0.9137 -> 0.9137 Offset: -0.22ppm CO2 span 1.0266 -> 1.0319 Offset: -2.61ppm H2O zero 0.8884 -> 0.8884 Offset: -0.1ppm H2O span 1.0282 -> 1.0125 Offset: 0.32ppm Notes: Very dry ambient air
2019-11-07	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira due to failure - probably bad source or detector. Replaced by sn 75H-2180 from Tonzi Floor.
2019-11-18	0418	LI-7500A	Calibration	Lab	Last calibration: 2019-08-21 AGC=94.4 SDM=0 DAC1=- DAC2=- Ambient P=100.4kPa, Tair=25.2C, Tdew=8.5C Zero Air at 950psi, AMP CA04396 408.97 at 600 Tdewspan=20.0 CO2 zero 0.899 -> 0.8991 Offset: 0.35ppm CO2 span 0.9976 -> 0.9988 Offset: -0.72ppm H2O zero 0.8466 -> 0.8482 Offset: 9.4ppm H2O span 0.9818 -> 0.9812 Offset: 0.03ppm Notes: Removed from Vaira due to no readings but has test fine in the lab - no missing data in about a week.
2019-11-07	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed on Vaira to replace sn 0418 that failed probably due to bad source or detector.
2020-02-03	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2019-08-21 AGC=98.8 SDM=0 DAC1=- DAC2=- Ambient P=100.9kPa, Tair=22.9C, Tdew=-7.4C Zero Air at 850psi, AMP CA04396 408.97 at 575 Tdewspan=16.0 CO2 zero 0.9137 -> 0.9137 Offset: -0.22ppm CO2 span 1.0266 -> 1.0319 Offset: -2.61ppm H2O zero 0.8884 -> 0.8884 Offset: -0.1ppm H2O span 1.0282 -> 1.0125 Offset: 0.32ppm Notes: Very dry ambient air
2019-11-19	75H-2180	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0035.
2020-02-03	75H-2180	LI-7500A	Calibration	Lab	Last calibration: 2019-08-21 AGC=98.8 SDM=0 DAC1=- DAC2=- Ambient P=100.9kPa, Tair=22.9C, Tdew=-7.4C Zero Air at 850psi, AMP CA04396 408.97 at 575 Tdewspan=16.0 CO2 zero 0.9137 -> 0.9137 Offset: -0.22ppm CO2 span 1.0266 -> 1.0319 Offset: -2.61ppm H2O zero 0.8884 -> 0.8884 Offset: -0.1ppm H2O span 1.0282 -> 1.0125 Offset: 0.32ppm Notes: Very dry ambient air
2019-11-19	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2180 for calibration.
2020-02-19	0035	LI-7500A	Calibration	Lab	Last calibration: 2019-11-18 AGC=100 SDM= DAC1= DAC2= Ambient P=100.95kPa, Tair=25.6C, Tdew=8.3C Zero Air at 800psi, AMP CA4396 408.97 at 550 Tdewspan=16.00 CO2 zero 0.9374 -> .9373 Offset: -.29ppm CO2 span 1.017 -> 1.0158 Offset: .43ppm H2O zero 0.898 -> .8981 Offset: .4ppm H2O span 1.0314 -> 1.0246 Offset: .14ppm Notes:
2020-02-12	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0073.
2020-02-19	0035	LI-7500A	Calibration	Lab	Last calibration: 2019-11-18 AGC=100 SDM= DAC1= DAC2= Ambient P=100.95kPa, Tair=25.6C, Tdew=8.3C Zero Air at 800psi, AMP CA4396 408.97 at 550 Tdewspan=16.00 CO2 zero 0.9374 -> .9373 Offset: -.29ppm CO2 span 1.017 -> 1.0158 Offset: .43ppm H2O zero 0.898 -> .8981 Offset: .4ppm H2O span 1.0314 -> 1.0246 Offset: .14ppm Notes:
2020-02-12	0073	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0035 for calibration.
2020-08-20	0073	LI-7500A	Calibration	Lab	Last calibration: 2020-02-11 AGC=100.8 SDM= DAC1= DAC2= Ambient P=100.0kPa, Tair=28.7C, Tdew=13.9C Zero Air at 700psi, AMP CA4396 408.97 at 500 Tdewspan=20.00 CO2 zero 0.9572 -> 0.9575 Offset: 0.96ppm CO2 span 1.0096 -> 1.0092 Offset: -0.11ppm H2O zero 0.7313 -> .7312 Offset: -0.3ppm H2O span 1.0091 -> 1.0118 Offset: -0.07ppm Notes: Air quality bad inside from wildfire smoke leaking in through windows
2020-05-23	0073	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2669.
2020-08-20	0073	LI-7500A	Calibration	Lab	Last calibration: 2020-02-11 AGC=100.8 SDM= DAC1= DAC2= Ambient P=100.0kPa, Tair=28.7C, Tdew=13.9C Zero Air at 700psi, AMP CA4396 408.97 at 500 Tdewspan=20.00 CO2 zero 0.9572 -> 0.9575 Offset: 0.96ppm CO2 span 1.0096 -> 1.0092 Offset: -0.11ppm H2O zero 0.7313 -> .7312 Offset: -0.3ppm H2O span 1.0091 -> 1.0118 Offset: -0.07ppm Notes: Air quality bad inside from wildfire smoke leaking in through windows
2020-05-23	75H-2669	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0073 for calibration.
2020-08-27	75H-2669	LI-7500A	Calibration	Lab	Last calibration: 2020-05-22 AGC=100.9 SDM= DAC1= DAC2= Ambient P=99.9kPa, Tair=23.7C, Tdew=12.4C Zero Air at 600psi, AMP CA4396 408.97 at 425 Tdewspan=20.00 CO2 zero 0.9185 -> .9184 Offset: -.32ppm CO2 span 1.0124 -> 1.0118 Offset: .52ppm H2O zero 0.8999 -> .9012 Offset: 8.3ppm H2O span 1.0094 -> 1.0121 Offset: -.06ppm Notes:
2020-08-26	75H-2669	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2176.
2020-08-27	75H-2669	LI-7500A	Calibration	Lab	Last calibration: 2020-05-22 AGC=100.9 SDM= DAC1= DAC2= Ambient P=99.9kPa, Tair=23.7C, Tdew=12.4C Zero Air at 600psi, AMP CA4396 408.97 at 425 Tdewspan=20.00 CO2 zero 0.9185 -> .9184 Offset: -.32ppm CO2 span 1.0124 -> 1.0118 Offset: .52ppm H2O zero 0.8999 -> .9012 Offset: 8.3ppm H2O span 1.0094 -> 1.0121 Offset: -.06ppm Notes:
2020-08-26	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2669 for calibration.
2020-12-02	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2020-08-25 AGC=101 SDM= DAC1= DAC2= Ambient P=100.8kPa, Tair=25.1C, Tdew=3.3C Zero Air at 450psi, AMP CA4396 408.97 at 300 Tdewspan=20.00 CO2 zero 0.8671 -> .8673 Offset: .59ppm CO2 span 1.0055 -> 1.009 Offset: -1.94ppm H2O zero 0.8526 -> .8531 Offset: 3.0ppm H2O span 0.9246 -> .9238 Offset: .02ppm Notes:
2020-12-01	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0418.
2020-12-02	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2020-08-25 AGC=101 SDM= DAC1= DAC2= Ambient P=100.8kPa, Tair=25.1C, Tdew=3.3C Zero Air at 450psi, AMP CA4396 408.97 at 300 Tdewspan=20.00 CO2 zero 0.8671 -> .8673 Offset: .59ppm CO2 span 1.0055 -> 1.009 Offset: -1.94ppm H2O zero 0.8526 -> .8531 Offset: 3.0ppm H2O span 0.9246 -> .9238 Offset: .02ppm Notes:
2020-12-01	0418	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2176 for calibration.
2021-03-03	0418	LI-7500A	Calibration	Lab	Last calibration: 2020-11-24 AGC=97.7 SDM= DAC1= DAC2= Ambient P=99.3kPa, Tair=25.7C, Tdew=8.2C Zero Air at 450psi, AMP CA3923 474.19 at 550 Tdewspan=20.00 CO2 zero 0.8995 -> .9003 Offset: 3.01ppm CO2 span 1.0034 -> .9978 Offset: 3.49ppm H2O zero 0.8465 -> .8461 Offset: -2.0ppm H2O span 0.9847 -> .9906 Offset: -.14ppm Notes: I had to add more water the dewpt generator to get it to stay at the set dewpoint, otherwise it would just slowly decline forever. Calibrated earlier in the day, but I had forgotten to update the pressure coefficients in the config file for LI-7550 sn AIU-614. With the incorrect coefficients, offsets were (CO2 zero = 0.78, CO2 span = 0.23, H2O zero = -4.6, H2O span = 0.04).
2021-03-02	0418	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2667.
2021-03-03	0418	LI-7500A	Calibration	Lab	Last calibration: 2020-11-24 AGC=97.7 SDM= DAC1= DAC2= Ambient P=99.3kPa, Tair=25.7C, Tdew=8.2C Zero Air at 450psi, AMP CA3923 474.19 at 550 Tdewspan=20.00 CO2 zero 0.8995 -> .9003 Offset: 3.01ppm CO2 span 1.0034 -> .9978 Offset: 3.49ppm H2O zero 0.8465 -> .8461 Offset: -2.0ppm H2O span 0.9847 -> .9906 Offset: -.14ppm Notes: I had to add more water the dewpt generator to get it to stay at the set dewpoint, otherwise it would just slowly decline forever. Calibrated earlier in the day, but I had forgotten to update the pressure coefficients in the config file for LI-7550 sn AIU-614. With the incorrect coefficients, offsets were (CO2 zero = 0.78, CO2 span = 0.23, H2O zero = -4.6, H2O span = 0.04).
2021-03-02	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0418 for calibration.
2021-06-07	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2021-03-01 AGC=102 SDM= DAC1= DAC2= Ambient P=99.5kPa, Tair=20.8C, Tdew=9.2C Zero Air at 250psi, AMP CA04119 524.77 at 1750 Tdewspan=16.00 CO2 zero 0.9423 -> .9422 Offset: -.43ppm CO2 span 1.0092 -> 1.0122 Offset: -2.23ppm H2O zero 0.8385 -> .8404 Offset: 11.8ppm H2O span 1.0147 -> 1.0198 Offset: -.1ppm Notes:
2021-06-02	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0065.
2021-06-07	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2021-03-01 AGC=102 SDM= DAC1= DAC2= Ambient P=99.5kPa, Tair=20.8C, Tdew=9.2C Zero Air at 250psi, AMP CA04119 524.77 at 1750 Tdewspan=16.00 CO2 zero 0.9423 -> .9422 Offset: -.43ppm CO2 span 1.0092 -> 1.0122 Offset: -2.23ppm H2O zero 0.8385 -> .8404 Offset: 11.8ppm H2O span 1.0147 -> 1.0198 Offset: -.1ppm Notes:
2021-06-02	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2667 for calibration.
2021-09-08	0065	LI-7500A	Calibration	Lab	Last calibration: 2021-06-01 AGC=102 SDM= DAC1= DAC2= Ambient P=100.3kPa, Tair=27.75C, Tdew=15.5C Zero Air at 1875psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.8913 -> .8911 Offset: -1.15ppm CO2 span 1.0201 -> 1.0211 Offset: .7ppm H2O zero 0.7305 -> .7313 Offset: 5.7ppm H2O span 1.0158 -> 1.0143 Offset: .03ppm Notes: Showing Carlos how to calibrate 7500s
2021-09-01	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0042.
2021-09-08	0065	LI-7500A	Calibration	Lab	Last calibration: 2021-06-01 AGC=102 SDM= DAC1= DAC2= Ambient P=100.3kPa, Tair=27.75C, Tdew=15.5C Zero Air at 1875psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.8913 -> .8911 Offset: -1.15ppm CO2 span 1.0201 -> 1.0211 Offset: .7ppm H2O zero 0.7305 -> .7313 Offset: 5.7ppm H2O span 1.0158 -> 1.0143 Offset: .03ppm Notes: Showing Carlos how to calibrate 7500s
2021-09-01	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration.
2021-12-09	0042	LI-7500A	Calibration	Lab	Last calibration: 2021-08-31 AGC=100.7 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=25.9C, Tdew=5.9C Zero Air at 100psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.9479 -> .9481 Offset: .73ppm CO2 span 1.0063 -> 1.0091 Offset: -1.82ppm H2O zero 0.8448 -> .8452 Offset: 2.4ppm H2O span 1.0163 -> 1.0123 Offset: -.11ppm Notes: <100psi of air left in the zero air tank, but the zero was stable for 2+ min after setting the zeros, so I feel comfortable the calibration was good.
2021-12-02	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2182.
2021-12-09	0042	LI-7500A	Calibration	Lab	Last calibration: 2021-08-31 AGC=100.7 SDM= DAC1= DAC2= Ambient P=100.4kPa, Tair=25.9C, Tdew=5.9C Zero Air at 100psi, AMP CA04119 524.77 at 1700 Tdewspan=20.00 CO2 zero 0.9479 -> .9481 Offset: .73ppm CO2 span 1.0063 -> 1.0091 Offset: -1.82ppm H2O zero 0.8448 -> .8452 Offset: 2.4ppm H2O span 1.0163 -> 1.0123 Offset: -.11ppm Notes: <100psi of air left in the zero air tank, but the zero was stable for 2+ min after setting the zeros, so I feel comfortable the calibration was good.
2021-12-02	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0042 for calibration.
2022-03-22	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2021-11-30 AGC=99.4 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=29.6C, Tdew=10.7C Zero Air at 900psi, AMP CA04119 524.77 at 1650 Tdewspan=20.0 CO2 zero 0.885 -> 0.8849 Offset: -0.6ppm CO2 span 1.0219 -> 1.0222 Offset: -0.07ppm H2O zero 0.847 -> 0.8483 Offset: 7.9ppm H2O span 1.0264 -> 1.0312 Offset: -0.1ppm Notes:
2022-03-10	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2667.
2022-03-22	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2021-11-30 AGC=99.4 SDM=0 DAC1=- DAC2=- Ambient P=100.8kPa, Tair=29.6C, Tdew=10.7C Zero Air at 900psi, AMP CA04119 524.77 at 1650 Tdewspan=20.0 CO2 zero 0.885 -> 0.8849 Offset: -0.6ppm CO2 span 1.0219 -> 1.0222 Offset: -0.07ppm H2O zero 0.847 -> 0.8483 Offset: 7.9ppm H2O span 1.0264 -> 1.0312 Offset: -0.1ppm Notes:
2022-03-10	75H-2667	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2182 for calibration.
2022-09-15	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2022-03-02 AGC=100.4 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=20.6C, Tdew=13.4C Zero Air at 1875psi, AMP CA04119 524.77 at 1350 Tdewspan=20.00 CO2 zero 0.9412 -> .9413 Offset: .3ppm CO2 span 1.0171 -> 1.0204 Offset: -2.27ppm H2O zero 0.841 -> .8407 Offset: -1.7ppm H2O span 1.018 -> 1.0338 Offset: .01ppm Notes: Calibrated with AMP 7550 sn AIU-1039. At first, large H2O span offset (-0.32) than usual. The condenser water tube in the back was low on water. I opened the cap to let water level rise again. Afterwards, H2O span was right on (offset 0.01).
2022-09-14	75H-2667	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0065.
2022-09-15	75H-2667	LI-7500A	Calibration	Lab	Last calibration: 2022-03-02 AGC=100.4 SDM= DAC1= DAC2= Ambient P=100.5kPa, Tair=20.6C, Tdew=13.4C Zero Air at 1875psi, AMP CA04119 524.77 at 1350 Tdewspan=20.00 CO2 zero 0.9412 -> .9413 Offset: .3ppm CO2 span 1.0171 -> 1.0204 Offset: -2.27ppm H2O zero 0.841 -> .8407 Offset: -1.7ppm H2O span 1.018 -> 1.0338 Offset: .01ppm Notes: Calibrated with AMP 7550 sn AIU-1039. At first, large H2O span offset (-0.32) than usual. The condenser water tube in the back was low on water. I opened the cap to let water level rise again. Afterwards, H2O span was right on (offset 0.01).
2022-09-14	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2667 for calibration.
2023-01-04	0065	LI-7500A	Calibration	Lab	Last calibration: 2022-09-12 AGC=101.1 SDM=0 DAC1=- DAC2=- Ambient P=99.5kPa, Tair=18.1C, Tdew=10.7C Zero Air at 1650psi, AMP CA04119 524.77 at 1250 Tdewspan=15.0 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: 5.1ppm H2O span 1.0167 -> 1.0226 Offset: -0.12ppm Notes:
2022-12-06	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2176.
2023-01-04	0065	LI-7500A	Calibration	Lab	Last calibration: 2022-09-12 AGC=101.1 SDM=0 DAC1=- DAC2=- Ambient P=99.5kPa, Tair=18.1C, Tdew=10.7C Zero Air at 1650psi, AMP CA04119 524.77 at 1250 Tdewspan=15.0 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: 5.1ppm H2O span 1.0167 -> 1.0226 Offset: -0.12ppm Notes:
2022-12-06	75H-2176	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration.
2023-03-29	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2022-12-05 AGC=100.1 SDM= DAC1= DAC2= Ambient P=99.8kPa, Tair=19.16C, Tdew=7.7C Zero Air at 1300psi, AMP CA04119 524.77 at 1150 Tdewspan=16.00 CO2 zero 0.8678 -> .8679 Offset: .37ppm CO2 span 1.0144 -> 1.0130 Offset: .93ppm H2O zero 0.8553 -> .8562 Offset: 5.2ppm H2O span 0.9281 -> .9316 Offset: -.08ppm Notes:
2023-03-16	75H-2176	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2514.
2023-03-29	75H-2176	LI-7500A	Calibration	Lab	Last calibration: 2022-12-05 AGC=100.1 SDM= DAC1= DAC2= Ambient P=99.8kPa, Tair=19.16C, Tdew=7.7C Zero Air at 1300psi, AMP CA04119 524.77 at 1150 Tdewspan=16.00 CO2 zero 0.8678 -> .8679 Offset: .37ppm CO2 span 1.0144 -> 1.0130 Offset: .93ppm H2O zero 0.8553 -> .8562 Offset: 5.2ppm H2O span 0.9281 -> .9316 Offset: -.08ppm Notes:
2023-03-16	75H-2514	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2176 for calibration.
2023-07-10	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2023-03-14 AGC=100.4 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.9kPa, Tair=21.7C, Tdew=12.2C Zero Air at 1000psi, AMP CA04119 524.77 at 950 Tdewspan=16.00 CO2 zero 0.9053 -> .9049 Offset: -1.85ppm CO2 span 1.0169 -> 1.0199 Offset: -2.16ppm H2O zero 0.8408 -> .8426 Offset: 13.0ppm H2O span 1.0243 -> 1.0244 Offset: 0.0ppm Notes: Slightly larger H2O zero than usual but span was right no. Calibrated in vertical orientation
2023-06-16	75H-2514	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 1594.
2023-07-10	75H-2514	LI-7500A	Calibration	Lab	Last calibration: 2023-03-14 AGC=100.4 SDM= DAC1= DAC2= AIU sn AIU-1569, Presure A0=58.004, A1=15.479 Ambient P=100.9kPa, Tair=21.7C, Tdew=12.2C Zero Air at 1000psi, AMP CA04119 524.77 at 950 Tdewspan=16.00 CO2 zero 0.9053 -> .9049 Offset: -1.85ppm CO2 span 1.0169 -> 1.0199 Offset: -2.16ppm H2O zero 0.8408 -> .8426 Offset: 13.0ppm H2O span 1.0243 -> 1.0244 Offset: 0.0ppm Notes: Slightly larger H2O zero than usual but span was right no. Calibrated in vertical orientation
2023-06-16	1594	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2514 for calibration.
2023-09-19	1594	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0065.
2023-09-19	0065	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 1594 for calibration.
2024-01-03	0065	LI-7500A	Calibration	Lab	Last calibration: 2023-09-18 AGC=100 SDM=0 DAC1=- DAC2=- AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.8kPa, Tair=22.7C, Tdew=7.3C Zero Air at 550psi, AMP CA04119 524.77 at 700 Tdewspan=20.0 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: 4.9ppm H2O span 1.0226 -> 1.0238 Offset: -0.02ppm Notes: Signal strength rest from 107 to 100 before calibration. Used CO2 span pt of 524.67
2024-01-02	0065	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0035.
2024-01-03	0065	LI-7500A	Calibration	Lab	Last calibration: 2023-09-18 AGC=100 SDM=0 DAC1=- DAC2=- AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.8kPa, Tair=22.7C, Tdew=7.3C Zero Air at 550psi, AMP CA04119 524.77 at 700 Tdewspan=20.0 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: 4.9ppm H2O span 1.0226 -> 1.0238 Offset: -0.02ppm Notes: Signal strength rest from 107 to 100 before calibration. Used CO2 span pt of 524.67
2024-01-02	0035	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0065 for calibration
2024-04-15	0035	LI-7500A	Calibration	Lab	Last calibration: 2024-01-02 AGC=100.7 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.96kPa, Tair=22.82C, Tdew=9.50C Zero Air at 300psi, AMP CA04119 524.77 at 550 Tdewspan=20.00 CO2 zero 0.9372 -> .9377 Offset: -.4ppm CO2 span 1.0267 -> 1.0226 Offset: .98ppm H2O zero 0.9006 -> .8987 Offset: -11.1ppm H2O span 1.04 -> 1.0279 Offset: -.16ppm Notes: H2O zero was drifting up after stabilizing, but CO2 zero ok. Maybe we need to change the internal chemicals next time? I redid the H2O zero point after finishing the rest of the calibration. The offset changed from 0.8969 to 0.8987 (tiny change). Used 524.65 as span point in the software for post-span CO2 value to be around 524.77.
2024-03-26	0035	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 0042.
2024-04-15	0035	LI-7500A	Calibration	Lab	Last calibration: 2024-01-02 AGC=100.7 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.96kPa, Tair=22.82C, Tdew=9.50C Zero Air at 300psi, AMP CA04119 524.77 at 550 Tdewspan=20.00 CO2 zero 0.9372 -> .9377 Offset: -.4ppm CO2 span 1.0267 -> 1.0226 Offset: .98ppm H2O zero 0.9006 -> .8987 Offset: -11.1ppm H2O span 1.04 -> 1.0279 Offset: -.16ppm Notes: H2O zero was drifting up after stabilizing, but CO2 zero ok. Maybe we need to change the internal chemicals next time? I redid the H2O zero point after finishing the rest of the calibration. The offset changed from 0.8969 to 0.8987 (tiny change). Used 524.65 as span point in the software for post-span CO2 value to be around 524.77.
2024-03-26	0042	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0035 for calibration.
2024-07-12	0042	LI-7500A	Calibration	Lab	Last calibration: 2024-03-23 AGC=101.5 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=99.9kPa, Tair=23.17C, Tdew=13.9C Zero Air at 1750psi, AMP CA04119 524.77 at 350 Tdewspan=20.00 CO2 zero 0.9483 -> .9482 Offset: -.53ppm CO2 span 1.0098 -> 1.0114 Offset: -1.07ppm H2O zero 0.8451 -> .8455 Offset: 2.1ppm H2O span 1.02 -> 1.0264 Offset: -.14ppm Notes:
2024-06-19	0042	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2182.
2024-07-12	0042	LI-7500A	Calibration	Lab	Last calibration: 2024-03-23 AGC=101.5 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=99.9kPa, Tair=23.17C, Tdew=13.9C Zero Air at 1750psi, AMP CA04119 524.77 at 350 Tdewspan=20.00 CO2 zero 0.9483 -> .9482 Offset: -.53ppm CO2 span 1.0098 -> 1.0114 Offset: -1.07ppm H2O zero 0.8451 -> .8455 Offset: 2.1ppm H2O span 1.02 -> 1.0264 Offset: -.14ppm Notes:
2024-06-19	75H-2182	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 0042 for calibration.
2024-10-22	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2024-06-17 AGC=100.8 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.7kPa, Tair=26.3C, Tdew=10.7C Zero Air at 1050psi, AMP FB04319 514.07 at 825 Tdewspan=20.00 CO2 zero 0.885 -> .8849 Offset: -.42ppm CO2 span 1.0141 -> 1.0136 Offset: .43ppm H2O zero 0.8332 -> .8326 Offset: -4.3ppm H2O span 1.0365 -> 1.0334 Offset: .07ppm Notes:
2024-09-27	75H-2182	LI-7500A	Removed	Gas Analyzer CO2/H2O	Removed from Vaira for calibration. Replaced by sn 75H-2180.
2024-10-22	75H-2182	LI-7500A	Calibration	Lab	Last calibration: 2024-06-17 AGC=100.8 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.7kPa, Tair=26.3C, Tdew=10.7C Zero Air at 1050psi, AMP FB04319 514.07 at 825 Tdewspan=20.00 CO2 zero 0.885 -> .8849 Offset: -.42ppm CO2 span 1.0141 -> 1.0136 Offset: .43ppm H2O zero 0.8332 -> .8326 Offset: -4.3ppm H2O span 1.0365 -> 1.0334 Offset: .07ppm Notes:
2024-09-27	75H-2180	LI-7500A	Installed	Gas Analyzer CO2/H2O	Installed at Vaira to replace sn 75H-2182 for calibration.
Heat Flux Plate
2000-10-07	000137	HFP01	Installed	Heat Flux Plate A	Installed with the initial set up of the Vaira site.
2000-10-07	000141	HFP01	Installed	Heat Flux Plate B	Installed with the initial set up of the Vaira site.
2000-10-07	000143	HFP01	Installed	Heat Flux Plate C	Installed with the initial set up of the Vaira site.
2006-10-28	001605	HFP01	Installed	Heat Flux Plate B	Installed to replace existing plate that had failed months before. This entry was pieced together from notes and examination of the data.
2006-10-28	001603	HFP01	Installed	Heat Flux Plate A	Installed to replace existing plate that had failed months before. This entry was pieced together from notes and examination of the data.
2012-09-05	001603	HFP01	Removed		Removed from the Vaira tower for calibration. This sensors was burried under the end of the PVC conduit and under a gopher mound at about 10cm below the surface. This was the first of the heat flux plates.
2012-11-07	001603	HFP01	Installed		Reinstalled after calibration by Sebastian in BC Canada. The original calibration factor was found to be still correct. It was reinstalled in a different location near another SHF plate to the north and cleared the litter from the new location.
2013-02-06	P01	HP-127-1.0-1.3-71P	Installed		Installed in a profile at -2cm to the east of the Vaira radiation tower
2013-02-06	P02	HP-127-1.0-1.3-71P	Installed		Installed in a profile at -4cm to the east of the Vaira radiation tower
2013-02-06	P03	HP-127-1.0-1.3-71P	Installed		Installed in a profile at -8cm to the east of the Vaira radiation tower
2013-02-06	P04	HP-127-1.0-1.3-71P	Installed		Installed in a profile at -16cm to the east of the Vaira radiation tower
2013-02-06	P05	HP-127-1.0-1.3-71P	Installed		Installed in a profile at -25cm to the east of the Vaira radiation tower
2015-11-20	P03	HP-127-1.0-1.3-71P	Removed		Removed from Vaira at -8cm. A gopher had chewed its wire.
2015-11-20	P04	HP-127-1.0-1.3-71P	Removed		Removed from Vaira at -16cm. Looks like the insulation had cracked and the wire rotted.
2015-12-02	P01	HP-127-1.0-1.3-71P	Removed		Removed from Vaira at -2cm. The red wire was broken not clear whether corrosion or animal (or shovel) damage
2015-12-02	P03	HP-127-1.0-1.3-71P	Installed		Reinstalled at Vaira at -8cm. This was spliced onto the existing cable in the field.
2015-12-02	P04	HP-127-1.0-1.3-71P	Installed		Reinstalled at Vaira at -16cm. This was spliced onto the existing cable in the field.
2016-03-23	P01	HP-127-1.0-1.3-71P	Removed		Removed from Vaira at -2cm due to broken wire.
2016-04-05	P01	HP-127-1.0-1.3-71P	Installed		Reinstalled at Vaira in the Peltier SHF plate profile at -2cm after fixing broken wire in the lab.
2022-02-09	001603	HFP01	Location	Heat Flux Plate A	Wired as SHF #1
2022-02-09	001605	HFP01	Location	Heat Flux Plate B	Wired as SHF #2
2022-02-09	000143	HFP01	Location	Heat Flux Plate C	Wired as SHF #3
Interface
2012-08-22	4994	CFM100	Installed		Installed with CR1000 sn 23865 to collect flux data at the Vaira tower in parallel with winflux. This data logger is in the box with the sonic PSU.
2013-01-24	6761	NL115	Installed		Installed the the computer box with CR1000 sn 47108 to collect images from the Phenecam
2013-05-15	6761	NL115	Removed		This NL115 was removed from Vaira along with CR1000 sn 47108 where they were used to collect images from the Starsot Phenocam. They were replaced by a Raspberry Pi
2017-04-10	AIU-0650	LI-7550	Installed	Interface LI-7500	Added to the Vaira eddy tower for the Ameriflux inter-comparison and the transition to newer LI-7500A eddy systems.
2017-05-11	AIU-0650	LI-7550	Removed		Removed from Vaira because the Ameriflux intercomparison finished and because we received new 7500A and sonics from Ameriflux. This interface was replaced by interface AIU-1870.
2017-05-11	AIU-1870	LI-7550	Installed	Interface LI-7550	Installed at Vaira to replace interface interface AIU-650.
2017-05-24	000192	1189PC	Removed		Removed from the Vaira Tower. Replaced by the new Licor GHG system from Ameriflux.
2017-05-24	4994	CFM100	Removed		Removed from the Vaira Tower. Replaced by the new Licor GHG system from Ameriflux.
2017-08-17	AIU-1870	LI-7550	Upgrade	Interface LI-7550	We upgrade the firmware from v8.5.0 to v8.75
2018-03-06	AIU-1870	LI-7550	Upgrade	Interface LI-7550	Downgraded from embedded software version 8.7.5 to version 8.5.0 so that the interface version is consistent across the lab. We had to downgrade other interfaces to 8.5.0 to solve the data-header mismatch we had with version 8.7.5.
2021-06-02	AIU-1870	LI-7550	Upgrade	Interface LI-7550	The firmware was upgraded from v8.5.0 to v8.8.32 for standardization with the Delta Licor systems
2023-07-10	AIU-1870	LI-7550	Notes	none	Pressure coefficients found in a calibration file. A0=58.383 A1=15.574
LED sensor
2004-07-24	LED-01	LED-NDVI	Installed	LED sensor	Approximate date of installation based on the first data in the database.
Moisture Point
2001-11-10	000000573FAA	PRB-K Type #8	Installed	Moisture Point Solar	Installed at Vaira near the solar panels by Dennis and Liukang
2001-11-10	000007933FDE	PRB-K Type #8	Installed	Moisture Point Tower	Installed at Vaira near the eddy tower by Dennis and Liukang
2010-06-24	000000573FAA	PRB-K Type #8	Removed	Moisture Point Solar	Removed from Vaira between the solar panels and the diffuse radiation tripod. The top pin in the connector is broken.
2010-11-12	00000128B8072	PRB-K Type #8	Removed	Moisture Point Gate	The bottom measurement location was not working so it was removed and brough back to the lab for testing/repair. The pilot rod was left in the hole.
2010-11-12	00000128BDDE8	PRB-K Type #8	Installed	Moisture Point Biomass	Installed in the west corner of Bill Frost's biomass sampling enclosure at Vaira.
2010-11-12	00000128B8072	PRB-K Type #8	Installed	Moisture Point Gate	Installed inside the cow fence at Vaira near the gate on the south side of the enclosure.
2010-11-12	00000128B97F3	PRB-K Type #8	Installed	Moisture Point Gate	Installed inside the cow fence at Vaira on the east side of the enclosure where a broken probes was previously removed.
2010-12-09	00000128B7B90	PRB-K Type #8	Installed	Moisture Point Gate	This probe was intalled at Vaira inside the cow fense to the right of the gate and fence charger.
2019-03-29	00000128B7B90	PRB-K Type #8	Removed	Moisture Point Gate	Removed from the location near the gate. This probe has two broken pins top and bottom and is no longer making readings.
2022-03-24	000007933FDE	PRB-K Type #8	Removed	Moisture Point Tower	Removed from near the eddy tower, top and bottom pin broken. Not working for many months
2022-03-24	00000128B97F3	PRB-K Type #8	Removed	Moisture Point Solar	Removed from near the solar panels, top and bottom pin broken. Not working for many months
2022-03-24	00000128BDDE8	PRB-K Type #8	Removed	Moisture Point Biomass	Removed from the At biomass fence, one pin broken. Not working for many months
Multiplexer
2012-02-16	5609	AM16/32	Installed		Installed at Vaira with the new soil CO2 system. The system is not running yet because we need longer cables for the Vaisala co2 probes.
2016-10-20	1238	AM16-32A	Moved		Moved with radiometer test tripod from Twitchell Rice to Vaira Ranch to compare against Ione sensors.
2016-11-02	1238	AM16-32A	Removed		Removed from Vaira with the radiometer inter-comparison system that was on a stand alone tripod.
2020-12-01	5609	AM16/32	Removed	Multiplexer Soil CO2	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
Narrow Band
2017-08-17	2046503368	SRS-Ni NDVI	Installed	Narrow Band Incoming	Installed on the Vaira Tower in the incoming position.
2017-08-17	2046503402	SRS-Ni NDVI	Installed	Narrow Band Reflected	Installed on the Vaira Tower in the outgoing position
2018-04-25	2046503402	SRS-Ni NDVI	Removed	Narrow Band Reflected	Removed from outgoing position on the Vaira after comparing with LED sensor
2018-04-25	2046503368	SRS-Ni NDVI	Removed	Narrow Band Incoming	Removed from the incoming postion on the Vaira after comparing with LED sensor
2019-02-20	1334903221	SRS-Ni NDVI	Installed	Narrow Band Incoming	Installed on the Vaira Tower in the incoming position
2019-02-20	1234903795	SRS-Ni NDVI	Installed	Narrow Band Reflected	Installed on the Vaira Tower in the reflected position.
2024-02-27	1334903221	SRS-Ni NDVI	Removed	Narrow Band Incoming	Removed from the incoming location at Vaira. These sensors drift randomly and can be replace with broad band NDVI from SW-PAR.
2024-02-27	1234903795	SRS-Ni NDVI	Removed	Narrow Band Reflected	Removed from the refleced location at Vaira. These sensors drift randomly and can be replace with broad band NDVI from SW-PAR.
Net Radiometer
2000-10-07	990353	NR-LITE	Installed	Net Radiometer	Installed with the initial set up of the Vaira site.
2001-05-20	990181	CNR1	Installed	Net Radiometer 4-way	Installed on the Vaira tower
2010-01-08	071421	CNR1	Location	Net Radiometer 4-way	This instrument is installed on the Vaira Tower. Calibration factor on instrument is 10.15E-5 V/W.m2
2016-10-20	1720	NR01	Moved		Moved with radiometer test tripod from Twitchell Rice to Vaira Ranch to compare against Ione sensors.
2016-10-20	2420	NR01	Moved		Moved with radiometer test tripod from Twitchell Rice to Vaira Ranch to compare against Ione sensors.
2016-11-02	1720	NR01	Removed		Removed from Vaira with the radiometer inter-comparison system that was on a stand alone tripod.
2016-11-02	2420	NR01	Removed		Removed from Vaira with the radiometer inter-comparison system that was on a stand alone tripod.
2017-08-17	990353	NR-LITE	Removed	Net Radiometer	Removed from the Vaira tower with the upgrade on the data logger. This sensor is redundant with the 4-way CNR1 and is very old.
PAR Sensor
2000-10-07	990031	PAR-LITE	Installed	PAR Sensor Reflected	Installed facing down with the initial set up of the Vaira site.
2000-11-04	LQ1570	Line Quantum	Installed		Installed at Vaira with the initial setup of the site.
2001-05-07	LQ1570	Line Quantum	Moved		Moved from Vaira to Tonzi
2004-07-24	26/8	BF3	Installed	PAR Sensor Diffuse	This looks like a likely install date - major data logger rewiring, first data in the data base.
2010-01-08	990031	PAR-LITE	Location	PAR Sensor Reflected	This instrument is installed in the downward diretion collecting PAR reflected from the surface. Calibration factor on instrument is 5.08 µV/µmol/s.m2
2010-01-08	990025	PAR-LITE	Location	PAR Sensor Incoming	This instrument is installed in the upward diretion collecting incoming PAR. Calibration factor on instrument is 5.03 µV/µmol/s.m2
2016-04-05	26/8	BF3	Maintenance	PAR Sensor Diffuse	Replaced the desiccant, some condensation in the dome.
2016-10-20	140457	PQS 1	Moved	PAR Sensor Incoming Cal	Moved with radiometer test tripod from Twitchell Rice to Vaira Ranch to compare against Ione sensors.
2016-11-02	140457	PQS 1	Removed	PAR Sensor Incoming Cal	Removed from Vaira with the radiometer inter-comparison system that was on a stand alone tripod.
2020-06-12	140455	PQS 1	Installed	PAR Sensor Incoming Cal	Installed on the Vaira Tower mounted in the incoming position for cross comparison and eventual swap of the old sensor on the tower for cable repair.
2020-06-12	161073	PQS 1	Installed	PAR Sensor Reflected Cal	Installed on the Vaira Tower mounted in the reflected position for cross comparison and eventual swap of the old sensor on the tower for cable repair.
2020-07-28	161073	PQS 1	Moved	PAR Sensor Incoming Cal	Moved from the reflected position to the incoming position to continue inter-comparison
2020-07-28	140455	PQS 1	Moved	PAR Sensor Reflected Cal	Moved from the incoming position to the reflected position to continue inter-comparison
2020-08-26	161073	PQS 1	Removed	PAR Sensor Incoming Cal	Removed from Vaira incoming after inter-comparison.
2020-08-26	140455	PQS 1	Removed	PAR Sensor Reflected Cal	Removed from Vaira reflected after inter-comparison.
2020-08-26	040412	PAR-LITE	Installed	PAR Sensor Incoming Cal	Installed at Vaira in the incoming position for inter-comparison. This sensor will likely replace the old sensor.
2020-08-26	030381	PAR-LITE	Installed	PAR Sensor Reflected Cal	Installed at Vaira in the reflected position for inter-comparison. This sensor will likely replace the old sensor.
2020-09-16	030381	PAR-LITE	Moved	PAR Sensor Reflected	Moved from the reflected cal position to the main reflected position.
2020-09-16	990031	PAR-LITE	Moved	PAR Sensor Reflected Cal	Moved from the main reflected position to the reflected cal position in preparation to being removed.
2020-09-16	040412	PAR-LITE	Moved	PAR Sensor Incoming	Moved from the incoming cal position to the main incoming position.
2020-09-16	990025	PAR-LITE	Moved	PAR Sensor Incoming Cal	Moved from the main incoming position to the incoming cal position in preparation to being removed.
2020-09-29	990025	PAR-LITE	Removed	PAR Sensor Incoming Cal	Removed from the tower (incoming cal) for repair - the cable is all rotted
2020-09-29	990031	PAR-LITE	Removed	PAR Sensor Reflected Cal	Removed from the tower (reflected cal) for repair - the cable is all rotted
2021-03-17	26/8	BF3	Maintenance	PAR Sensor Diffuse	Replaced two packs of internal desiccant - a little bit of condensation in the dome.
2023-08-29	010164	PAR-LITE	Installed	none	Installed as part of the Arduino base RSB diffuse PAR mounted next to the BF3
Precipitation
2010-09-02	24875-999	TR-525I-R1	Removed	Precipitation	This tipping bucket was removed from the Vaira tower to troubleshoot a problem that was causing the total number of tips not to be saved in the final storage location.
2010-09-10	24875-999	TR-525I-R1	Installed	Precipitation	Reinstalled on the Vaira tower after testing in the lab. The testing revealed that the problem was a bug in the data logger program that was recording instantaneous values instead of 30min averages.
2018-10-17	24875-999	TR-525I-R1	Calibration	Precipitation	Got 78 of 100 tips - adjusted screws 3 turns CW
2019-10-24	24875-999	TR-525I-R1	Calibration	Precipitation	I connected the tipping bucket to a CR23x and dripped 475ml of water through the bucket which should result in 100tips. We got 103 tips. I did not adjust it.
2021-10-06	24875-999	TR-525I-R1	Calibration	Precipitation	Tested using our new method with the peristaltic pump and 237ml of water which should result in 50 tips. I got 54 tips. I adjusted the screws two full turns CCW which should decrease the number of tips by 8-12% (4-6 tips).
Pyranometer
2000-10-07	996980	CMP 11	Installed		Installed with the initial set up of the Vaira site
2012-07-10	996980	CMP 11	Removed		Removed for the Vaira tower due to condensation and water inside the domes. The cable is also cracked and brittle from sun exposure.
Radio
2019-01-04	21520	RF400	Removed		Remove from the met data logger box for testing in the lab. The radio has not been used in the field for a long while.
2019-01-04	21519	RF400	Removed		Remove from the pond data logger box for testing in the lab. The antenna cable was broken. The radio has not been used in the field for a long while.
RH & Temp
2002-06-06	U3030046	HMP45AC	Removed	RH & Temp	Removed from Vaira for calibration. Replaced by sn W0730037.
2002-06-06	W0730037	HMP45AC	Installed	RH & Temp	Installed at Vaira to replace sn U3030046 for calibration.
2024-02-27	E5761	HygroVUE10	Installed	RH & Temp	Installed at Vaira in the RH/T location. Will cross compare with old HMP45 before removing the old sensor.
2024-03-26	W0730037	HMP45AC		RH & Temp	Removed from Vaira. A Hygrovue was installed a few weeks ago for cross comparison. This HMP45 will probably not be used again.
Soil Moisture Probe
2000-10-07	54/015	ML2x	Installed	Soil Moisture Probe A	Installed at -20cm with the intial set up of the Vaira site. Moved on 11-04
2000-10-07	54/016	ML2x	Installed	Soil Moisture Probe B	Installed at -10cm with the intial set up of the Vaira. Moved on 11-04
2000-10-07	54/017	ML2x	Installed	Soil Moisture Probe C	Installed at -10cm with the intial set up of the Vaira site. Moved on 11-04
2000-10-07	54/019	ML2x	Installed	Soil Moisture Probe D	Installed with the setup of the site, initially at the soil surface - moved on 11-04
2000-10-07	54/020	ML2x	Installed	Soil Moisture Probe E	Installed with the setup of the site, initially at the soil surface - moved on 11-04
2000-11-04	54/020	ML2x	Moved	Soil Moisture Probe E	Moved from the surface to -20cm
2000-11-04	54/016	ML2x	Moved	Soil Moisture Probe B	Moved from testing location. New location is at -10cm
2000-11-04	54/017	ML2x	Moved	Soil Moisture Probe C	Moved from testing location. New location is at -10cm
2000-11-04	54/015	ML2x	Moved	Soil Moisture Probe A	Moved from testing location. New location is at -20cm
2000-11-04	54/019	ML2x	Moved	Soil Moisture Probe D	Moved from testing location. New location is at 0cm
2000-12-03	54/020	ML2x	Repair	Soil Moisture Probe E	Found with cable chewed by cows. Cable spliced and seems to be working.
2002-08-01	54/007	ML2x	Location	Soil Moisture Probe E	From a field note by Liu Kang, this sensor is in the fifth location at Vaira. It is noted that sn 54/020 was listed in this location previously but it is unknown when the swap was made.
2002-08-01	54/015	ML2x	Location	Soil Moisture Probe A	From a field note by Liu Kang.
2002-08-01	54/011	ML2x	Location	Soil Moisture Probe B	From a field note by Liu Kang.
2002-08-01	54/017	ML2x	Location	Soil Moisture Probe C	From a field note by Liu Kang.
2002-08-01	54/019	ML2x	Location	Soil Moisture Probe D	From a field note by Liu Kang.
2004-10-22	54/007	ML2x	Removed	Soil Moisture Probe E	Removed from Vaira due to low readings. Replaced by sn 64/072
2004-10-22	64/072	ML2x	Installed	Soil Moisture Probe E	Installed at Vaira to replace sn 54/007 that was reading low.
2022-02-09	54/015	ML2x	Location	Soil Moisture Probe A	Wired as Theta soil moisture #1
2022-02-09	54/017	ML2x	Location	Soil Moisture Probe C	Wired as Theta soil moisture #3
2022-02-09	54/019	ML2x	Location	Soil Moisture Probe D	Wired as Theta soil moisture #4
2022-02-09	64/072	ML2x	Location	Soil Moisture Probe E	Wired as Theta soil moisture #5
2022-02-09	54/011	ML2x	Location	Soil Moisture Probe B	Wired as Theta soil moisture #2
2022-05-26	2690	SoilVUE10	Installed	Soil Moisture Probe F Profile	Installed at 5.4m at heading 345deg from the met box about halfway between the eddy tower and radiation tower
2022-05-26	2679	SoilVUE10	Installed	Soil Moisture Probe H Profile	Installed 7.7m at heading 26deg from the met box near the solar panels and the old Moisture Point probe location
2022-05-26	2677	SoilVUE10	Installed	Soil Moisture Probe I Profile	Installed 5.3m at heading 220deg from the met box about a meter outside the fence near the gate.
Solar Controller
2012-02-16	03220377	PS-15	Installed	none	Installed with the solar system for the new soil CO2 profile.
2018-05-23		PS-30M	Location		This controller is running the main solar system at Vaira. It has been here for probably since the site was set up.
2020-12-01	03220377	PS-15	Removed	Solar Controller Soil CO2	The battery bank has died and it has been decided to focus on the forced diffusion soil CO2 and Eosense GP profile. The rest of the soil co2 equipment will be removed.
Solar Panel
2012-02-16	020854E-6-03-02-06905	SP75	Installed	Solar Panel SoilCO2-A	Installed to provide 24V power for soil CO2 system but mistakenly wired for 12V - fixed on 3/19
2012-02-16	020854E-6-03-02-06862	SP75	Installed	Solar Panel SoilCO2-B	Installed to provide 24V power for soil CO2 system but mistakenly wired for 12V - fixed on 3/19
2021-10-26	020854E-6-03-02-06905	SP75	Removed	Solar Panel SoilCO2-A	Removed from Vaira - not in use, was for old soil co2 system.
2021-10-26	020854E-6-03-02-06862	SP75	Removed	Solar Panel SoilCO2-B	Removed from Vaira - not in use, was for old soil co2 system.
Weather Station
2019-04-30	A001353	Mark I	Installed	Weather Station A	Arable Mark I installed for CalVal inter-comparison
2019-05-14	C002471	Mark II	Installed	Weather Station B	Installed on the Vaira radiation boom on a new extension to the west. This unit is side by side with the existing Mark I unit for inter-comparison.
2019-11-19	C002471	Mark II	Removed	Weather Station B	This prototype Mark II unit was removed from the Vaira radiation boom to be replaced with a production unit of the Mark II.
2019-11-19	C002714	Mark II	Installed	Weather Station B	Installed on the Vaira Radiation boom to replace the existing prototype Mark II unit.
2020-04-18	C002714	Mark II	Removed	Weather Station B	Removed from Vaira for to be replaced by sn C003231 on request by Arable. No know problems.
2020-04-18	C003231	Mark II	Installed	Weather Station B	Installed at Vaira to replace sn C002714 on request by Arable. No known problems.
2021-01-21	A001353	Mark I	Removed	Weather Station A	Removed from Vaira as Mark I's are being phased out. Replaced by Mark II sn C006160.
2021-01-21	C006160	Mark II	Installed	Weather Station A	Installed at Vaira to replace Mark I sn A001353 which is being phased out.
2022-04-27	C003231	Mark II	Removed	Weather Station B	Removed from Vaira because it has not been working. I connected the wind set to the remaining Mark II unit.
2022-11-17	B301042	Mark 3	Installed	Weather Station B	Installed at Vaira to replace prototype sn B30086 as part of the Arable calval project
2024-02-09	B301042	Mark 3	Removed	Weather Station B	Removed from Vaira. Replaced by sn D006920 at Arable's request. I believe the older B unit was a prototype and the newer D unit is production grade
2024-02-09	D006920	Mark 3	Installed	Weather Station B	Installed at Vaira to replace sn B301042. I believe the older B unit was a prototype and the newer D unit is production grade

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