| Date: |
2010-09-08 |
| From: |
Twitchell Rice - |
| To: |
Twitchell Rice - |
| Title: |
Calibration |
| Notes: |
I adjusted the bypass valve. When Frank arrived we did a calibration. Last cal was done on Aug 6, 2010. The field tank is 3.276ppm CH4
Precal: 9:52PST, 25.54C, 111.2Torr, 16.112usec, 1Hz, 3.377ppm
Low flow pressure seems low here too but I did not check the filters. Being 100ppb off seems a lot, last cal uses a standard closer to 1.8ppm though. Post cal CH4 read 3.276ppm.
When we left the LGR read:
10:02PST, 25.49C, 144.34Torr, 16.080usec, 10Hz, 1.840ppm |
| Entered by: |
Sara Knox |
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