| Date: |
2013-08-21 |
| From: |
Twitchell Rice - Gas Analyzer CH4 |
| To: |
Twitchell Rice - Gas Analyzer CH4 |
| Title: |
Calibration |
| Notes: |
Calibration Location: Twitchell
Last calibration: 2013-02-21
RSSI=64%, Optical RH=13%
Ambient P=101.2kPa, Tair=18.3C
Zero Air at 1750psi, CH4 in air 4.995 at 1300
CH4 Zero Offset: 0.01ppm
CH4 Span Offset: -0.025ppm
Notes: It was windy but seemed to have no effect. The concentration of the secondary ch4 standard has been reevaluated since last cal. Last time 4.982, now 4.995
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