Equipment and Calibration History

History for Vaisala GMP222 K1350103

Rec No.	Date	Loc From	Title	Loc To	Notes
5412	2021-08-11	Tonzi-SoilCO2 CO2 Probe Tree2 Profile -0.04	Removed	Lab none	Removed from -4cm in the soil co2 profile near LiuKang's tree. This profile has not been running for a while due to a break in the power line. This style of measurements are being replaced by forced diffusion chambers.
3063	2017-09-14	Lab none	Installed	Tonzi CO2 Probe Tree2 Profile -0.04	Installed at Tonzi in the Tree 2 profile at -4cm after lab calibration. This is a new installation with new holes dug.
3022	2017-08-25	Vaira CO2 probe West Profile -0.02	Removed	Lab none	Removed from Vaira from West profile -2 cm position for calibration
2177	2016-02-23	Lab none	Installed	Vaira CO2 probe West Profile -0.02	Installed in the Vaira West profile at -2cm after lab calibration.
2151	2016-02-04	Vaira CO2 probe West Profile -0.02	Removed	Lab none	Removed from Vaira West profile at -2cm for calibration
2061	2014-12-09	Vaira CO2 probe West Profile -0.02	Location	Vaira CO2 probe West Profile -0.02	Vaira West profile at -2cm
1450	2014-04-07	Lab none	Calibration	Lab none	Trueppm = Probeppm*1.022 + 63.48; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 2238ppm, 3056ppm, and 10000ppm. Ta=25.8C, P=101.9kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Joe.