TCR/TFR With Prebuilt Heads? Calculation, usefulness.

[TooMuchOrangeTang]

When using a prebuilt head and coil with a TCR/TFR capable mod, is there any reason to use a custom curve instead of the mod's inbuilt TC mode for the appropriate wire type?

If it can offer a greater degree of accuracy, how can I get the parameters for the curve calculation given that I didn't built the thing myself (and I'm not quite at the point where I want to start doing that.)

Thanks folks!

 

[Jim_ MDP]

When using a prebuilt head and coil with a TCR/TFR capable mod, is there any reason to use a custom curve instead of the mod's inbuilt TC mode for the appropriate wire type?

Sure. In a perfect world it wouldn't be the case, but where we live there are differences in performance between the various makers' TC mods.

It could be their set-up/design, the inner construction, the way their firmware handles the TCR algorithm, the clock rate of the chip's sensing hardware... who knows what.

The result is that some mods run cool, some run hot... while DNA/SX owners laugh.

Our "coil resistance as thermometer" method is a balancing act. And a dodgy one at that.
But there are a lot of ways to adjust the vape to your preference.
Read, ask questions, learn... play with it.

And by the way... what is "TFR"? Can't say I've seen that acronym used before.

 

[TooMuchOrangeTang]

Sure. In a perfect world it wouldn't be the case, but where we live there are differences in performance between the various makers' TC mods.

It could be their set-up/design, the inner construction, the way their firmware handles the TCR algorithm, the clock rate of the chip's sensing hardware... who knows what.

The result is that some mods run cool, some run hot... while DNA/SX owners laugh.

Our "coil resistance as thermometer" method is a balancing act.
There are a lot of ways to adjust the vape to your preference.
Read, ask questions, learn... play with it.

And by the way... what is "TFR"? Can't say I've seen that acronym before.

So do we just have to gather TCR data from a prebuilt head experimentally? Hrf.

TFR - Temperature Factor of Resistance: From what I understand (and I may well be wrong) the TCR is essentially a multiplier of sorts that predicts a linear temperature:resistance relationship, while the TFR is a more precise curve derived from data gathered at various temp/resistance points.

 

[Jim_ MDP]

TFR - Temperature Factor of Resistance: From what I understand (and I may well be wrong) the TCR is essentially a multiplier of sorts that predicts a linear temperature:resistance relationship, while the TFR is a more precise curve derived from data gathered at various temp/resistance points.

The TCR value (Temperature Coefficient of Resistance) plugs into a variable in the equation. It is a linear result.
Evolv's DNA mods use a CSV file to allow eight (?) custom points for a curve.

TFR is simply not used in our conversations... in my experience.

And you can gather data, as we all do casually... yes, we're experimenting.

 

[David247]

If go to Wire wizard there is TFR values thats all I no about them.

 

[Jim_ MDP]

Thanks David.

I have a full complement of acronyms at the moment.
I won't be adding that one to the rotation without a compelling reason.