I did some research on this a long time ago but never implemented it so can only give you pointers. You need to install a small heater inside the enclosure to keep the temperature just above the dew point. Search on Google for a small heater, similar to a fish tank heater, that you can install inside the enclosure. There is a name for it but I can't remember what it is. Also, don't seal the unit completely. Add a small hole at the bottom of the enclosure.
See below:https://www.automationdirect.com/static/specs/ptcenclosureheaters.pdf
Last edited on Monday Oct 24th, 2016 08:32 am by Ingo
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