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User name Fansl
Log entry time 13:49:01 on August 09, 2006
Entry number 178646
keyword=RQ1 N2 Level
RQ1 N2 level has been decreasing gradually for several days. In
controlled access, we observed heavy frost on the N2 return lines. The
liquid level meter read zero, but heavy frost and ice indicated the
magnet was overfilling. I cycled power on the liquid level meter. Upon
re-power the meter read 60% and slowly floated back to zero. I replaced
the meter and calibrated in place. The indications seem to be steady.
Limited time during the access prevented a wet calibration of the probe.
The in place calibration is accurate +/- 10%.
A copy of this log entry has been emailed to: fansler@jlab.org