Equipment and Calibration History

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View history entry 1344 for Licor LI-7500A sn: 1594

Date: 2014-06-10
From: Lab - none
To: Lab - none
Title: Calibration
Notes: Last calibration: 2014-02-25 AGC=51 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=99.99kPa, Tair=22.71C, Tdew=13.19C Zero Air at 1200psi, God CO2 421.22 at 1500 Tdewspan=15.26 CO2 zero 0.8671 -> 0.8648 Offset: -9.57ppm CO2 span 1.0153 -> 1.0165 Offset: -0.72ppm H2O zero 0.894 -> 0.8979 Offset: 22.5ppm H2O span 0.994 -> 1.0501 Offset: -0.72ppm Notes: CO2 and H2O zero offsets unusually large. Water span kept creeping down - change chemicals next time?
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