Nomad

This is mainly an issue for SANE, from time to time, the high pressure compressor releases pressure, and in that case one has to manually restart the experiment (if it is not too late). But as this happens due to Murphy's law typically just after midnight, we typically learn about this only the next morning after having lost already 8 hours unnecessarily.
Basically, this is an encouragement for a setting controller which contains several local contact-defined error conditions (like, here, high pressure drops below a defined value, or below a certain percentage of the set-point)