Equipment and Calibration History

History for Vaisala GMP222 K1350102

Rec No.	Date	Loc From	Title	Loc To	Notes
5009	2020-12-01	Vaira CO2 probe East 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.
3128	2017-09-21	Vaira CO2 probe East Profile -0.04	Moved	Vaira CO2 probe East Profile -0.16	Moved from East profile at -4cm to East profile at -16cm
3067	2017-09-14	Lab none	Installed	Vaira CO2 probe East Profile -0.04	Reinstalled at Vaira in the East profile at -4cm after lab calibration.
3023	2017-08-25	Vaira CO2 probe West Profile -0.04	Removed	Lab none	Removed from Vaira from West profile -4 cm position for calibration
2178	2016-02-23	Lab none	Installed	Vaira CO2 probe West Profile -0.04	Installed in the Vaira West profile at -4cm after lab calibration.
2152	2016-02-04	Vaira CO2 probe West Profile -0.04	Removed	Lab none	Removed from Vaira West profile at -4cm for calibration
2062	2014-12-09	Vaira CO2 probe West Profile -0.04	Location	Vaira CO2 probe West Profile -0.04	Vaira West profile at -4cm
1449	2014-04-07	Lab none	Calibration	Lab none	Trueppm = Probeppm*1.02 + 41.22; 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.