Equipment and Calibration

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Equipment Entry

Instrument:CO2 Probe
Manufacture:Vaisala
Model No:GMP221
Serial No:K1340005
Tag No:
Acquisition Date:2014-04-03
Project:DOE
Location on 2018-06-13:Lab,
Notes: 0-3% range

Documents

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History

Rec No.DateLoc FromTitleLoc ToNotes
3510 2018-06-13 Twitchell Alfalfa Removed Lab none Removed with Twitchell Alfalfa site decommissioning.
1873 2015-06-09 Twitchell Alfalfa Removed Lab none Removed from Set A at -2cm with upgrade of soil CO2 system
1861 2014-08-13 Lab none Installed Twitchell Alfalfa Installed near the radiometers at Alfalfa in Set A to the south at -2cm
2088 2014-04-10 Lab none Installed Sherman Island Installed in Sherman profile A at -2cm to replace sn H1630066
1451 2014-04-07 Lab none Calibration Lab none Trueppm = Probeppm*0.9908 + -5.527; 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.