Equipment and Calibration History

History for Vaisala GMP222 X3830001

Rec No.	Date	Loc From	Title	Loc To	Notes
592	2012-05-02	Factory	Disposed	Disposed	Filter was cracked, probe completely replace - new probe is serial number H0630070
575	2012-03-28	Lab none	Shipped	Factory	Sent to Vaisala for repair. Reporting errors 10, 11 and 12 readings unreasonable.
1367	2010-03-02	Lab none	Calibration	Lab none	Trueppm = Probeppm*1.065 + -1.94; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 383ppm, 597ppm, and 2238ppm. Ta=22.2C, P=101.5kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Jaclyn.
4631	2010-01-08	Tonzi CO2 Probe Tree1 Profile -0.02	Location	Tonzi CO2 Probe Tree1 Profile -0.02	Pulled out for ambient air reading and put back.
4541	2008-03-06	Lab none	Installed	Tonzi CO2 Probe Open Profile -0.02	Installed in the East open grass profile at -2cm. mV and ppm readings in air were recorded before installation.