Reports until 15:35, Tuesday 23 May 2023
LHO FMCS
betsy.weaver@LIGO.ORG - posted 15:35, Tuesday 23 May 2023 - last comment - 13:01, Tuesday 30 May 2023(69855)
3IFO container plots

Looks like the 3IFO large Container  #3 needs to be checked for any purge line issues.  Although I'm not sure of the unit, this readout does not look like the others, at "160 H2O ppm" while the others are ~10-50 ish.  A trend shows this on a slight rise.

 

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betsy.weaver@LIGO.ORG - 13:01, Tuesday 30 May 2023 (70009)

While inspecting, Randy and I found that the guage ball on container unit #2 looked stuck (reading very low on the screen also) so he dialed down the pressure, and tapped it to unstick it, before resetting the pressure.  The trend of this container shows pretty flat line and hashy for the last 100 days and now it is back to trending something.  Hopefully it is showing flow now.

The #3 unit is still "higher" than the other when glancing at the medm values, but a longer year trend shows it goes up and down.  Likely all of these channels need some recalibration or something since the units and signs are not obvious.