david.barker@LIGO.ORG - posted 21:37, Tuesday 19 August 2025 - last comment - 21:38, Tuesday 19 August 2025(86472)
HAM1 Gauge PT100 VACSTAT alarm 20:17:24 PDT due to sensor glitch
We had a 2 second square wave sensor glitch in PT100. Its pressure jumped from 1.7e-07 to 3.7e-07 Torr for 2 seconds and then jumped back.
VACSTAT sent cell phone texts to team-VAC due to this single gauge event, because HAM1 is separated from the rest of the vertex and is therefore exempt from the 2-gauges-in-alarm filter.
VACSTAT was restarted at 21:26 and I took the opportunity to bring MY's PT124B back into the system.
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VACSTAT all green again.
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