I've been thinking about the mechanics of silica gel bags inside a camera and wondering about the effort involved in checking and drying them.
It occurred to me that it should not be all that hard to keep the silica gel outside the camera and have it in the flow path for a positive pressure system. A small tube fed into the camera body could keep the internal pressure above atmospheric and the silica gel could be in the incoming airflow path. It then becomes easy to check the state of the silica gel and to dry it as needed. If power is not a restriction a largish peltier in the incoming airflow path might also be useful.
Bob
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