Equipment and Calibration History

History for Vaisala GMT221 F4960019

Rec No.DateLoc FromTitleLoc ToNotes
1526 2014-08-27 Twitchell Alfalfa Removed Lab none Removed from profile B at 2cm due to reading zero. Replaced by sn Y2009100.
1864 2014-08-13 Lab none Installed Twitchell Alfalfa Installed near the radiometers at Alfalfa in Set B to the north at -2cm
1303 2014-05-13 Lab none Installed Sherman Island Installed in Sherman Set B at -2cm to replace 1% probe sn Z2720011. This swap was to make all probes 3%.
2089 2014-04-10 Sherman Island Removed Lab none Removed from Sherman profile A at -8cm, replaced with sn K1340007
1241 2014-01-29 Lab none Installed Sherman Island Reinstalled after lab calibration Set A at -8cm
1429 2014-01-27 Lab none Calibration Lab none Trueppm = Probeppm*1.067 + -469.7; 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.
1184 2014-01-24 Tonzi CO2 Probe Tree2 Profile -0.02 Removed Lab none Removed from Tonzi tree #2 at -2cm for lab calibration
1177 2012-03-02 Lab none Installed Tonzi CO2 Probe Tree2 Profile -0.02 Installed at Tonzi in the Tree2 set at -2cm
1414 2012-02-15 Lab none Calibration Lab none Trueppm = Probeppm*1.08 + -386.4; 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=26.7C, P=101.9kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Siyan.
1392 2011-10-06 Lab none Calibration Lab none Trueppm = Probeppm*1.02 + -56.65; linear relationship between the ppm reported by the probe and the known ppm of the calibration tanks. Tanks: zero air (0ppm), 406ppm, 2238ppm, and 10000ppm (N2 bal). Ta=26.2C, P=101.4kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Sara.
1386 2011-03-17 Lab none Calibration Lab none Trueppm = Probeppm*1.034 + 102.5; 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=25.6C, P=102.6kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Melanie.
1379 2011-02-07 Lab none Calibration Lab none Trueppm = Probeppm*1.048 + 150; 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.