| Date: |
2021-03-03 |
| From: |
Lab - |
| To: |
Lab - |
| Title: |
Calibration |
| Notes: |
Last calibration: 2020-11-24
AGC=97.7 SDM= DAC1= DAC2=
Ambient P=99.3kPa, Tair=25.7C, Tdew=8.2C
Zero Air at 450psi, AMP CA3923 474.19 at 550 Tdewspan=20.00
CO2 zero 0.8995 -> .9003 Offset: 3.01ppm
CO2 span 1.0034 -> .9978 Offset: 3.49ppm
H2O zero 0.8465 -> .8461 Offset: -2.0ppm
H2O span 0.9847 -> .9906 Offset: -.14ppm
Notes: I had to add more water the dewpt generator to get it to stay at the set dewpoint, otherwise it would just slowly decline forever. Calibrated earlier in the day, but I had forgotten to update the pressure coefficients in the config file for LI-7550 sn AIU-614. With the incorrect coefficients, offsets were (CO2 zero = 0.78, CO2 span = 0.23, H2O zero = -4.6, H2O span = 0.04).
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