RX Chip Resistance Rise After Tank Filling, How To Force New Resistance?

[Vapomizer]

So i am using the iStick TC100W with the RX Chip, same chip as in the Cuboid, RX200 etc..

Currently using the Griffin RTA with it but this also happens with other tanks.

When i top fill my tank with new juice resistance rise by 0.02, for my current SS316L build it rises from 0.33 Ohm to 0.35 Ohm briefly after filling, and then after an hour or two it comes back down to 0.33 Ohm

Before filling the tank i was vaping in SS316 TC with proper settings for the 0.33 Ohm resistance in place. once tank is filled and resistance rise to 0.35 Ohm it messes up my TC settings/performance

Two problems/questions i have here:

1- Why does resistance rise after filling the tank? i have everything built perfectly, posts' screws tightened all the way, coils not touching the chimney metal as i test resistance with and without the tank screwed in and it does not change a bit, tank screwed flush all the way, positive pin of the tank screwed tightly and perfectly, so there is no reason for the resistance rise when it come to conductivity of the components, it only happens once i fill the tank with new juice, why do you think this is happening?

2- Once resistance changes, i have no way of forcing the RX chip to update to the new resistance even when it is not locked, the 0.02 Ohms change from 0.33 Ohms to 0.35 Ohms is not wide enough for the chip to ask if it is a new coil but is enough to mess up my TC performance, so resistance is stuck at 0.33 Ohms when the actual resistance is 0.35 Ohms, i change modes, turn off and on the mod, lock and unlock the resistance, whatever i do the mod keeps using the old 0.33 Ohm resistance as a base which messes up my TC settings, is there a way to force the RX chip to update the resistance in TC to reflect that minor change?

Thanks in advance for all your thoughts.

 

[DED420]

The resistance change after filling is probably due to the temperature change from the juice (room temp in the juice bottle and room temp in the tank can vary slightly) so it will need to time to resettle to a new temp in the tank.

I have yet to run into this particular problem, but sometimes, after I've used the particular coil for a long time, it may read slightly higher/lower when left to rest, but once I fire it up again it goes back to it's original resistance reading. You will want the resistance to stay at the same one the coil started at on first install. Even if the resistance wants to change, it shouldn't be allowed too. If the resistance is constantly changing that much, as in your scenario, it may be time to change out the coils. As wire ages and wears, the resistance will change (just like Kanthal), so a constantly shifting resistance is a good sign the coil isn't secured properly (which you stated you checked) or the coil has worn out.

If all these problems were happening on brand new coils, then the issue would probably be with the mod, but since the coils were performing fine before, it's probably due to usage, so it may be time to swap out coils.

 

[Vapomizer]

The resistance change after filling is probably due to the temperature change from the juice (room temp in the juice bottle and room temp in the tank can vary slightly) so it will need to time to resettle to a new temp in the tank.

Makes perfect sense, i usually top fill directly after having vaped on it for a while, so hot coil and cool juice is indeed responsible for that 0.02 Ohms change in resistance, i tested now, made a new 0.26 Ohms build, let the coil cool down to room temp, checked resistance, 0.26 Ohms, filled the tank, resistance did not change a bit, so your explanation seems accurate

I have yet to run into this particular problem, but sometimes, after I've used the particular coil for a long time, it may read slightly higher/lower when left to rest, but once I fire it up again it goes back to it's original resistance reading. You will want the resistance to stay at the same one the coil started at on first install. Even if the resistance wants to change, it shouldn't be allowed too. If the resistance is constantly changing that much, as in your scenario, it may be time to change out the coils. As wire ages and wears, the resistance will change (just like Kanthal), so a constantly shifting resistance is a good sign the coil isn't secured properly (which you stated you checked) or the coil has worn out.

This issue used to happen with new builds with a brand new wire, i do not let my builds age that much, but anyways since i now know why this is happening there is no need to constantly re-calibrate the resistance reading because it is now consistent, and like you said the way the chip works is good, because it does not reflect the slight resistance rise due to cool juice being added which tends to come back to actual resistance shortly after some use.

If all these problems were happening on brand new coils, then the issue would probably be with the mod, but since the coils were performing fine before, it's probably due to usage, so it may be time to swap out coils.

Mod is working well, and the build is perfectly secured in place so there is no chance of a bad connection anywhere in the build, your explanation of the new juice changing temperature and thus resistance is accurate.

Thank you so much

 

[DED420]

Not a problem at all, glad I could help