Equipment and Calibration

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Equipment Entry

Instrument: CO2 Probe Manufacture: Vaisala Model No: GMT221 Serial No: G0150034 Tag No: Acquisition Date: 2011-01-19 Project: NSF-Methane Location on 2014-01-23: Sherman, Notes: 0-1% range

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History

Rec No.	Date	Loc From	Title	Loc To	Notes
2082	2014-01-23	Sherman Island	Location	Sherman Island	Sherman Profile A -8cm
1390	2011-10-06	Lab none	Calibration	Lab none	Trueppm = Probeppm*1.014 + 23.21; 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.
1381	2011-02-10	Lab none	Calibration	Lab none	Trueppm = Probeppm*1.055 + 27.37; 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=25.5C, P=102.4kPa. Because the lab conditions were close to factory conditions, no temperature or pressure corrections were applied. Done by: Melanie.