What basically happens is if I put in a new coil like the ones I have say on the package 0.30 ohms and when I put it in my RDA it says new coil detected and sets my ohm to 0.17ohm but every now and again it says new coil detected and says for the same coil 0.21 ohm, I recently figured out that if I press my fire key 3 times it locks the firekey and If I keep holding it in it allows me to change the ohm. So I don't know it I Should change it back 0.17 or leave it.
Yeah but I want to vape safe. Hearing too much about mods exploding in people's faces.
A tegulated mod should keep amp draw on the battery at a safe level. What goes to the atty is not what is taken from the battery, there is electronic trickery inbetween.
It's normal and nothing to worry about all that's happening is as the coil gets hotter the resistance goes higher. All you need to do is do a safe build which 0.17ohms is comfortably safe and to be honest like @Raindance says a regulated device's safety features would kick in if not. If you are using 2 25 continuous amp batteries then that's 50amps you can pull before being unsafe. for example vaping at 50W with 0.17ohm build only pulls 17amp and 50W with 0.21ohm only pulls 15amps. Tweeking resistance and locking resistance which you would do with the coil at room temperature so you would lock it at 0.17ohms and it would keep reading that even when the coil gets hotter is more for temp control vapers which i'm not but i believe it makes it a smoother vape in temp control.
As resistance do fluctuate that feature allows you to set your resistance for a more consistent vape. Of course you will set it around the resistance as measured and not some mad number. As others said, it will not override your device's safety features, but in case everything fails it would be wise to set it as close to measured as possible.
I am not sure that is correct @Timwis. Most devices are wired in series, which does not double the amperage with dual batteries as is the case with devices wired in parallel. The latter are few and far between.
But it does illustrate the principle of a parallel wired device, be it mech or not.
Ohms law is only valid if temperature remains constant, as per your quote above.
Ohms law is only valid if temperature remains constant, as per your quote above.
The resistance change due to temperature fluctuations in the heating material is known as the temperature coefficient of resistance of the particular heating material.
