| 摘要 |
The present invention relates to an immersion heater usable in an explosive atmosphere for heating liquid or gaseous media. Immersion heater characterised in that the connection box 2% is made of A35 steel or alloyed steel of at least equivalent grade and is produced by mechanised welding, and it is provided with a device for preventing the transmission of an internal explosion to the surrounding explosive atmosphere in the region of its cover 8% in the form of a flat seal 13 resistant to an explosion inside the box 2% and of an O-ring 14 made of neoprene, or another material usable in an explosive medium, which is fluid-proof. <IMAGE>
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