| Date: |
2015-04-20 |
| From: |
Lab - none |
| To: |
Lab - none |
| Title: |
Calibration |
| Notes: |
Last calibration: 2014-12-22
AGC=50 SDM=7 DAC1=0-1000 DAC2=10-25
Ambient P=100.14kPa, Tair=20.41C, Tdew=14.44C
Zero Air at 900psi, God CO2 421.22 at 1200 Tdewspan=15.96
CO2 zero 1.0008 -> 1.0002 Offset: -2.0ppm
CO2 span 1.0116 -> 1.0115 Offset: -0.02ppm
H2O zero 0.8242 -> 0.8243 Offset: 0.8ppm
H2O span 1.1234 -> 0.9991 Offset: 2.62ppm
Notes: External serial port not working. Relatively large offset in H2O span, similar to other 7500s calibrated at this time - dew point generator and Vaisala probe agreed with in 0.5C
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