The plant air system has a large condensation tank for collecting moisture from several dryers that drain into it. Every few months, build-up in its drain line causes a blockage. Sometimes, the weight of the condensate will flush this out, sometimes it won’t. When it won’t, the condensate backs up into the dryers and causes big problems.
The plant engineer wants to minimize the need to manually unplug the line, but wants an alarm to sound “before the level gets too