Equipment and Calibration History

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View history entry 5611 for Licor LI-7700 sn: TG1-0424

Date: 2021-11-30
From: Gilbert Tract - Gas Analyzer CH4
To: Gilbert Tract - Gas Analyzer CH4
Title: Calibration
Notes: Calibration Location: Gilbert Tract Last calibration: 2021-06-01 RSSI=85%, Optical RH=22% Ambient P=102.1kPa, Tair=15.2C Zero Air at 100psi, AMP CA04396 1.9317 at 1800 CH4 Zero Offset: .032ppm CH4 Span Offset: -.0197ppm Notes: Relatively still day with a lot of visitors to the site. The zero air tank pressure may have been >100psi, but the regulator was wonky. Zero was stable for 2min after applying zero. Swapped out the desiccant one for one with new drierite after calibration. I didn't flush out the headspace because I wanted to preserve the zero air for more calibrations that day.
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