Equipment and Calibration History

History for Vaisala GMP222 H1630066

Rec No.	Date	Loc From	Title	Loc To	Notes
1887	2015-06-09	Twitchell Alfalfa	Removed	Lab none	Removed from forced diffusion soil cell with upgrade of soil CO2 system
1869	2014-08-13	Lab none	Installed	Twitchell Alfalfa	Installed near the radiometers at Alfalfa in the forced diffusion soil cell
1818	2014-08-07	Sherman Island	Removed	Lab none	Removed with the rest of the soil CO2 system from the Sherman site to be redeployed at the Alfalfa site on Twitchell
1457	2014-05-27	Lab none	Calibration	Lab none	Trueppm = Probeppm*1.746 + -27.77; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 2238ppm, and 3056ppm. Ta=20.19C, P=101.3kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Madeleine.
2087	2014-04-10	Sherman Island	Removed	Lab none	Removed from Sherman profile A at -2cm, replaced with sn K1340005
1353	2014-03-19	Lab none	Installed	Sherman Island	This 0-1% probes was installed at Sherman in Set A at 2cm depth.
1437	2014-01-27	Lab none	Calibration	Lab none	Trueppm = Probeppm*1.753 + -29.94; 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.
958	2013-04-04	Lab none	Maintenance	Lab none
957	2013-03-28	Mayberry CO2 Probe B	Removed	Lab none	We removed the probe since it was reading 5000mV even we were put the sensor in the air.
907	2013-01-17	Lab none	Installed	Mayberry CO2 Probe B	Installed in a teflon sock in the water in the tule patch
1419	2013-01-08	Lab none	Calibration	Lab none	Trueppm = Probeppm*0.9828 + 15.78; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 421ppm, 3056ppm, and 10000ppm. Ta=22.3C, P=102.5kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Sara.