MATERIAL DETECTION

摘要

An emanation device comprises an emanation material container, an emanation section (20) and emanation material level indication means; wherein, the emanation material level indication means comprises control means and a temperature sensor (22), which is adapted to sense a temperature of a wick (18) of the emanation device, which wick (18) is adapted to transport emanation material from the emanation material container to the emanation section (20).