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E-cigarettes work with a resistance coil which heats liquid into vapor. Some e-cigs have a dry-tank protection, which senses when the coil does not have any liquid to heat, to avoid it getting too hot. My e-cig uses SAE 316L stainless steel resistance coils and is only tuned to protect for that specific type of coil.

How does the dry tank sensor work?

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  • \$\begingroup\$ Could be anything from capacitive/resistive sensing to temperature control. At least post a picture with some serious zoom. \$\endgroup\$ – Gregory Kornblum Nov 6 at 17:35
  • \$\begingroup\$ My guess would be the driver "senses" the lack of load as an increase in coil resistance (and thus temperature) beyond a "safe" limit. \$\endgroup\$ – rdtsc Nov 6 at 18:48

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