Average Puff Temperature statistic

Discuss global usage statistics.
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James
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Posts: 22
Joined: February 6th, 2016, 7:31 pm

Average Puff Temperature statistic

Post by James » December 3rd, 2016, 12:51 pm

The second peak around 167 F is likely Stainless Steel coils being vaped with the material set to Nickel.
A reading of 167 F in Nickel corresponds to a 23% resistance rise, which is about 540F in Stainless Steel 316. (This small rise is also very sensitive to mod resistance, so that temperature is give or take... a lot...)

If someone is using Stainless Steel in this manner they are effectively vaping power-controlled, without temperature protection, just as if the coil were Kanthal. For DNAs with 1.2 SP3 and up, the threshold to consider a coil temperature-sensing is rising quickly above 185F. This is a 27% resistance rise, which is 637 F for Stainless-as-Nickel. As a result, with newer firmware, these coils will likely not be considered temperature-sensing any. (They aren't, after all, and nobody vapes up at 637 F.) So, I expect this peak to shrink substantially as newer firmware become more common.

Folks below 100 F or over 600 F may be using some hack involving dubious material curves, like the folks who trick DNAs into preheating their Kanthal coils. 1.2 SP3 and up will cut off firing a coil that goes 40 F above its setpoint, so the high number isn't even possible with newer firmware. I don't know the exact reason.

When I get around to breaking down the data by coil material and firmware version, I'll have a lot more certainty on this. It's on my To-Do list.

James
Site Admin
Posts: 22
Joined: February 6th, 2016, 7:31 pm

Re: Average Puff Temperature statistic

Post by James » January 23rd, 2017, 3:25 pm

The Temperature and Peak Temperature statistics now use puffs from people who use temperature protection nearly exclusively (more than 97.5% of the time).

You can see from the % Puffs Temperature-Protected statistic that most people use temperature protection either nearly exclusively or nearly not at all. The extremely odd (well below boiling point) temperatures we were seeing before were not from people using it nearly exclusively, so they were likely people experiencing connection issues.

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