peter.king@LIGO.ORG - posted 07:22, Friday 19 August 2016 - last comment - 07:58, Friday 19 August 2016(29190)
turbine water flow sensor output
Attached is a plot of the cooling water flow rate for the 4 laser heads after replacement of the
burst hose (over head 3) and replacement of the head 4 flow sensor. Also attached is a 30-day
trend plot of the same signals. The large jump in flow rates about 6 days into the plot coincides
with replacement of the water manifold located under the table.
At this stage it is too early to tell if replacing the head 4 flow sensor fixes the problem
with the all over the place signal seen in the 30-day trend plot.
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Also attached, similar trends for the water pressure, power meter circuit flow and front end laser flow.
Humidity sensor output at the time of the water leak. This gives a rough idea in the future as to
what to watch out for.
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