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Join Date: Aug 2017
I am no expert on big humidors like you discribe, and am surprise someone with a big humidor has not chimed in with help & advice. So I will make an observation about air & heat movement.
I am not sure how big your humidor is in actual size. Height, width, and last depth. But say you have a room that is want to be at a constant 78 degrees, and you have a heat pump for making it hot, and cold. The heat pump in most case is control by a devise that reads tempeture, and turns on the heat or cooling until desired tempetures is reached.
So if like in my house the laundry room is the greatest distance from the thermometer. It is never at optimal tempetures. So your humidor has different point, and variation of RH. I am sure if you has six perfectly calibrated RH gauges, set at six different points in your humidor there would be variation in readings.
JMHO and a little common sense reasoning. Even a B & M shop with big walk in humidor, tens of thousands of dollar in equptment to provided perfect RH & Tempeture store age, are effected by people coming and going in and out of the humidor. People body heat, and clothing effect RH & Tempeture. Yes some clothing item suck up RH. All they can do is try and make their storage environment as good as possible.