Equipment and Calibration History

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View history entry 6574 for Licor LI-7500A sn: 75H-2150

Date: 2024-02-26
From: Lab -
To: Lab -
Title: Calibration
Notes: Last calibration: 2023-11-09 AGC=102.8 SDM= DAC1= DAC2= AIU sn AIU-1866, Presure A0=58.31, A1=15.48 Ambient P=100.4kPa, Tair=24.1C, Tdew=10.96C Zero Air at 350psi, AMP CA04119 575 at 524.77 Tdewspan=20.00 CO2 zero 0.9041 -> .9030 Offset: -5.59ppm CO2 span 1.018 -> 1.0175 Offset: .48ppm H2O zero 0.8731 -> .8737 Offset: 3.5ppm H2O span 1.0265 -> 1.0382 Offset: -.25ppm Notes: BWW tower sensor. One of the mount screws wouldn't come out initially; Joe got it out pulsing with vice grips + WD-40. He cleaned out the white dust inside the bolt holes with a thread cutter. He sprayed the bolts and bolt holes with a anti-corrosion spray before I installed it again. The 7550 temperature sensor was bad. I replaced with a repaired homemade temperature sensor. The HMP fan was not spinning, but it seemed to work fine after I removed a bit of fluff.
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