I'm designing a hall effect sensor & comparator circuit and it will end up in an intermittently steamy environment as part of an espresso machine. Space restrictions make potting essentially impossible. We'll probably plan on conformal coating, but I know that is no guarantee of complete protection. Are there things I can do with layout (trace size or routing, etc) that will help protect it from moisture induced malfunctions?
The circuit will be in a roughly 6" dome shaped area, typically around 130F. Periodically, near-boiling water will flow about 8" below or bursts of steam will blow by just under the dome and I imagine some of that steam gets trapped in the dome and possibly condenses on the cooler (but still warm, around 130F) surfaces.
The circuit will be in a roughly 6" dome shaped area, typically around 130F. Periodically, near-boiling water will flow about 8" below or bursts of steam will blow by just under the dome and I imagine some of that steam gets trapped in the dome and possibly condenses on the cooler (but still warm, around 130F) surfaces.