Equipment and Calibration History

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View history entry 1764 for Licor LI-7500A sn: 0035

Date: 2015-04-06
From: Lab - none
To: Lab - none
Title: Calibration
Notes: Last calibration: 2014-09-09 AGC=49 SDM=7 DAC1=0-1000 DAC2=10-25 Ambient P=100.34kPa, Tair=18.40C, Tdew=4.37C Zero Air at 900psi, God CO2 421.22 at 1200 Tdewspan=15.97 CO2 zero 0.9386 -> 0.9389 Offset: 1.0ppm CO2 span 1.0181 -> 1.0257 Offset: -4.02ppm H2O zero 0.8957 -> 0.8939 Offset: -10.0ppm H2O span 0.9838 -> 0.9664 Offset: 0.33ppm Notes: The H2O span was unstable. Adding water to the dew point generator seemed to improve the situation but still variable.
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