Equipment and Calibration History

History for Vaisala GMT222 G0230062

Rec No.DateLoc FromTitleLoc ToNotes
5005 2020-12-01 Vaira CO2 probe North Profile -0.16 Removed Lab none 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.
3125 2017-09-21 Vaira CO2 probe North Profile -0.02 Moved Vaira CO2 probe North Profile -0.16 Moved from North profile at -2cm to North profile at -16cm
3069 2017-09-14 Lab none Installed Vaira CO2 probe North Profile -0.02 Reinstalled at Vaira in the North profile at -2cm after lab calibration.
3025 2017-08-25 Vaira CO2 probe North Profile -0.02 Removed Lab none Removed from Vaira from North profile -2 cm position for calibration
2180 2016-02-23 Lab none Installed Vaira CO2 probe North Profile -0.02 Installed in the Vaira North profile at -2cm after lab calibration.
2154 2016-02-04 Vaira CO2 probe North Profile -0.02 Removed Lab none Removed from Vaira North profile at -2cm for calibration
2066 2014-12-09 Vaira CO2 probe North Profile -0.02 Location Vaira CO2 probe North Profile -0.02 Vaira North profile at -2cm - may have been at -8cm
2010 2014-04-22 Vaira CO2 probe West Profile -0.08 Removed Lab none Removed from Vaira West profile at -8cm, replaced by sn K1350101
2018 2014-03-18 Vaira CO2 probe West Profile -0.02 Moved Vaira CO2 probe West Profile -0.04 At Vaira in the West profile this probe was moved from the -2cm location to -4cm
2002 2014-01-29 Lab none Installed Vaira CO2 probe West Profile -0.02 West profile as -2cm with new U-shaped tops on the PVC enclosures.
1442 2014-01-27 Lab none Calibration Lab none Trueppm = Probeppm*1.004 + 19.27; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 3056ppm, and 10000ppm. Ta=22.7C, P=102.1kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Patty.
1189 2014-01-24 Vaira CO2 probe West Profile -0.02 Removed Lab none Removed from Vaira west plot at -2cm for lab calibration
1123 2012-03-21 Lab none Installed Vaira CO2 probe West Profile -0.02 Installed at Vaira in the west set at -2cm
1398 2012-01-30 Lab none Calibration Lab none Trueppm = Probeppm*1.017 + 4.211; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 436ppm, 2238ppm, and 10000ppm (N2 bal). Ta=27.4C, P=101.9kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Siyan.
1377 2011-02-07 Lab none Calibration Lab none Trueppm = Probeppm*1.075 + 6.9; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 597ppm, 2238ppm, and 10000ppm (N2 bal). Ta=25.8C, P=102.5kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Melanie.