david.barker@LIGO.ORG - posted 08:53, Thursday 21 August 2025 (86492)
VACSTAT: increased HAM1 delta-trip to reduce false positives on sensor glitches
Following Tuesday night's false positive alarm for HAM1 PT100_MOD2 due to a sensor glitch (alog 86472) this morning I increased the delta-trip values for this gauge from 1.0e-07 to 3.0e-07 Torr for all three lookbacks.
The Tuesday alarm was due to the delta-p glitching up to 2.0e-07, the slope channels only reached 50% of their trip values.
VACSTAT was restarted at 08:37 with these new values.
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