Ohms vary with use

[Zyed]

My coils seem to change by .01-.02 ohms after using the coil for awhile.
This change might seem minute, but for TC on my DNA250 chip and SS 316L coils in the iJoy Tornado Hero it means inaccurate temperature calculations and I have to crank the degrees way lower than what I should to get the smooth vape I want.

edit- this usually happens after about 5 ml of juice and it's the cold (room temperature ohms, base ohms, whatever you want to call it that's changing)

What could be causing this?

Is there any way to prevent it?

Do I just have to change my temperature with the ohm changes?

 

[zephyr]

My coils seem to change by .01-.02 ohms after using the coil for awhile.
This change might seem minute, but for TC on my DNA250 chip and SS 316L coils in the iJoy Tornado Hero it means inaccurate temperature calculations and I have to crank the degrees way lower than what I should to get the smooth vape I want.

edit- this usually happens after about 5 ml of juice and it's the cold (room temperature ohms, base ohms, whatever you want to call it that's changing)

What could be causing this?

Is there any way to prevent it?

Do I just have to change my temperature with the ohm changes?

Isn't there a lock resistance function on your mod? Are you using it?

Hold Fire and Up for 2 seconds while atomizer is room temperature

 

[AndriaD]

I can't really speak to anything about TC vaping as I've never been happy with it, so don't use it... but that tiny a change in resistance is not at all uncommon. One thing I do know about TC is that you have to set the temp you want when the coil is cool, at room temp, or the TC won't work right. Which makes me suspect that changing the temp "on the fly" after you're already vaping with that coil, will lead to wildly inaccurate TC.

Others that are more experienced with TC vaping may have much better info to contribute.

Andria

 

[Zyed]

I can't really speak to anything about TC vaping as I've never been happy with it, so don't use it... but that tiny a change in resistance is not at all uncommon. One thing I do know about TC is that you have to set the temp you want when the coil is cool, at room temp, or the TC won't work right. Which makes me suspect that changing the temp "on the fly" after you're already vaping with that coil, will lead to wildly inaccurate TC.

Others that are more experienced with TC vaping may have much better info to contribute.

Andria

So what you're saying is locking the ohms will prevent the "on the fly" resistance reading? I was under the impression locking ohms prevented the mod from reading the changes in resistance necessary for TC to work

edit-

Isn't there a lock resistance function on your mod? Are you using it?

Hold Fire and Up for 2 seconds while atomizer is room temperature

Sorry didn't see your post. Won't that prevent the mod from reading the resistance change for TC mode to work?

 

[zephyr]

So what you're saying is locking the ohms will prevent the "on the fly" resistance reading? I was under the impression locking ohms prevented the mod from reading the changes in resistance necessary for TC to work

edit-

Sorry didn't see your post. Won't that prevent the mod from reading the resistance change for TC mode to work?

Negatory it has the forumulas in its memory to predict the temperature curve correctly based on room temperature resistance



That's from Evolve's DNA 250 manual

 

[Zyed]

Negatory it has the forumulas in its memory to predict the temperature curve correctly based on room temperature resistance

View attachment 105252

That's from Evolve's DNA 250 manual

Wow! Great to know! guess i should read my paperwork for my equipment a little closer haha

Thanks a lot!