| Date: |
2020-12-02 |
| From: |
Lab - |
| To: |
Lab - |
| Title: |
Calibration |
| Notes: |
Last calibration: 2020-08-25
AGC=101 SDM= DAC1= DAC2=
Ambient P=100.7kPa, Tair=24.3C, Tdew=2.2C
Zero Air at 450psi, AMP CA4396 408.97 at 300 Tdewspan=20.00
CO2 zero 0.9479 -> .9482 Offset: 1.16ppm
CO2 span 1.0073 -> 1.0111 Offset: -2.03ppm
H2O zero 0.8441 -> .8436 Offset: -3.1ppm
H2O span 1.0268 -> 1.0264 Offset: .01ppm
Notes: 2nd time doing calibration today. The first calibration had large offsets, so I decided to redo it (CO2 zero offset 3.93, CO2 span offset -3.77, H2O zero offset -13.5, H2O span offset 0.39). The 2nd time looks much better with expected range of offsets, but I'm not sure why it was different.
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