TC and multi material wires

[EyeOhmEye]

I'm considering purchasing a DNA device and would like to know if the DNA can do tc on a build with one ss wire and two kanthal? I know that the tcr will be significantly lower, but am hoping that the DNA is precise enough to measure the resistance change.

[Wayneo]

For TC, the core wire(s) need to be TC capable for it to work ..... with any wrap. I believe you described kanthal cores which will not work.

[EyeOhmEye]

I was thinking ss and kanthal in parallel, should have made that more clear. On steam engine the tcr was estimated at about 40.

[Hoggy]

I know this is old, but I wanted to post this for future searchers..

I've always found on any TC mod, DNA75/75C included, that the tcr is mostly determined by the lowest resistance wire.  I do multi-core wires all the time and that has been my experience here.

So yes, using SS 316 (for example) and kanthal in parallel for the core wires will work under the TCR settings on various mods, as SS 316.  Since the same-gauge kanthal wire's resistance is greater than that of the SS 316.

I do this 100% of the time when I use Ni-200 wire for the TC element.