Equipment and Calibration History

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View history entry 7225 for Licor LI-7500A sn: 75H-2514

Date: 2025-05-09
From: Lab -
To: Lab -
Title: Calibration
Notes: Last calibration: 2025-01-28 AGC=99.6 SDM=7 DAC1=- DAC2=- AIU sn AIU-2652, Presure A0=59.516, A1=15.503 Ambient P=100.8kPa, Tair=16.9C, Tdew=8.9C Zero Air at 100psi, AMP CA03923 488.75 at 1200 Tdewspan=13.0 CO2 zero 0.9083 -> 0.9091 Offset: 3.4ppm CO2 span 0.9983 -> 1.000 Offset: -0.95ppm H2O zero 0.8498 -> 0.8479 Offset: -12.7ppm H2O span 0.97 -> 0.9976 Offset: -0.57ppm Notes: The CO2 span was finicky. Tried a couple of small offsets from span gas value but there is anecdotal evidence that coefficient near 1.000 are difficult. Overall okay.
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