| Date: |
2010-06-22 |
| From: |
Twitchell Rice - |
| To: |
Twitchell Rice - |
| Title: |
Calibration |
| Notes: |
Initial readings from the LGR were:
9:57, 29.18C, 129.50Torr, 13.902usec, 10Hz, 1.865ppm, 14819ppm, 385.91ppm
I tried calibrating and notice very low pressure in low flow mode � 74.89Torr. I completed the calibration, but did not like it. I checked the exterior 2um filter and it seemed okay. I also checked the internal 2um filter and it seemed good as well. In checking the interior I noticed a loose connection. The connector that has to be disconnected to clean the mirror was left disconnected last time I cleaned the mirrors. I�m asking LGR what this connection does. It doesn�t look significant but after connecting it the pressure improved somewhat. And I did a second calibration.
Precal: last cal June 3, 3.276ppm CH4, 433.0ppm CO2, 1800psi
10:54, 134.32Torr, 3.217+-0.003ppm CH4, 416+-2ppm CO2
Post cal: 10:57, 130.0Torr, 3.276+-0.002ppm CH4, 433+-1ppm CO2
Last readings from LGR:
11:02, 28.57C, 144.47Torr, 13.86usec, 10Hz, 1.888ppm, 15195ppm, 400.44ppm |
| Entered by: |
Sara Knox |
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