inconsistent ohm readings

[errolng]

anyone experiencing very inconsistent readings of resistance?
my protank was showing 3.4 ohms when i first put it in.
restarted my evic and it showed 2.8.
later in the day when i turned it back on it showed 2.4, which is closer to the actual resistance of the head.

this happens quite often with my other clearos as well.
vamo seems a lot more accurate.

 

[Big Dazz]

How did u get ur Evic to read .ohms... All mines seems to read is whole numbers like 2.0

 

[crxess]

coils do fluctuate a little, however that is not your problem.
Turn evic off before switching devices.
eVic reads instantly - much faster than Vamo so your device is still loose at first contact and has a high reading.
Screwing the device on quickly also seems more accurate.

 

[Rickajho]

The key here is "...when I first put it on." If you are talking about a brand new coil - yeah that will happen. After a few vapes and the coil metal has a chance to actually break in you will start to get real readings.

 

[errolng]

no they are not new coils.
and i have tried turning it off and screwing it on but the readings are still pretty off.
it will read higher than the actual resistance.
could just be a problem with my device though.

 

[crxess]

Cool coil higher #
Warm coil - more resistance - lower #

I'd bet nothing is wrong with your eVic

 

[errolng]

no it adjusts after a while even if i do not fire it

 

[errolng]

only seems to happen with the kanger protanks.
just put it in and it stated 2.2 ohms.
after a while i notices it jumped to 3.1 ohms.
restarted my evic and it went back down to 2.4 ohms.

 

[Greg Brown]

only seems to happen with the kanger protanks.
just put it in and it stated 2.2 ohms.
after a while i notices it jumped to 3.1 ohms.
restarted my evic and it went back down to 2.4 ohms.

This happens on mine quite frequently when the battery get below 40%. I'm not sure why, but every time it happens the battery is 40% or lower. On mine, it doesn't really matter what kind of tank is on it. However, with that being said, mine is never off more than a few tenths of an Ohm. On the ProTank it will usually read somewhere between 2.2 -2.5 Ohms.

 

[e30ernest]

This happens to me with coils that aren't 100% good. Usually I replace my coil when that happens.

 

[tom_chang79]

only seems to happen with the kanger protanks.
just put it in and it stated 2.2 ohms.
after a while i notices it jumped to 3.1 ohms.
restarted my evic and it went back down to 2.4 ohms.

Did you screw the coil head down all the way into the PT base? Also, cleaning the contacts may help... I think many people clean the center contact but forget to clean out threading, since this is the return path for the current, it needs to be cleaned as well...

 

[errolng]

done it before doesn't work.
and i would think if its because of dirt or whatever, it would affect other tanks as well and not just the protank

 

[e30ernest]

So how accurate do you guys find the eVic in measuring resistance? I'm yet to buy a multimeter (still looking for a fairly cheap digital one locally) so I'm pretty much relying on the eVic to measure coil resistance.

I've got a mech on the way and just for kicks I want to experiment with sub ohm coils (even if I'm likely to stay around 1-1.2ohms). Does the eVic read below 1ohm?

Thanks!

 

[errolng]

if you're going sub then its safer to buy a multimeter

 

[Mrrochi]

This kept happening to me. Making sure the coil was all the way tight on the base solved the problem

 

[tom_chang79]

Just wanted to point something out from what I observed on my unit today...

I use a Protank with my eVic, and usually rebuild my Protank coil with cotton.

Out of quickness, I pulled out a stock, brand new, 1.8 Ohm head to replace the one that has the cotton rebuild.

I noticed after installing the fresh coil pack that the center positive post juts out more so tgan my rebuilt coils.

I never had a problem with my eVic reading ohms on my eVic if I used stock coils (fresh out of the foil pack) but it would give funny readings with my rebuilds (took two or three power cycling of the eVic to get the ohms right)

I think my problem after the rebuild, was that I was pushing the little center positive post/plunger piece in the coil pack too hard, so it sits more recessed into the 510 threading when assembled back...

For those that rebuild (or not) check your center positive post. It should *slighty* jut out beyond the outer threading of the 510 connection (negative connection) of the tank-side to make good contact with the positive nub on the eVic's side...

 

[Riffy]

The evic some times smokes crack when you're not looking. Mine does the new ohm setting all the time for no reason at all. SS or silica... it still finds the crack...

 

[PeteC2]

Actually, coil resistance does change both up and down throughout usage. Keep in mind that the amount of ejuice and sediment in it will affect the resistance at any point in time.

In usage, I find that darker ejuices which contain more particulate matter affect the resistance readings to a greater degree.

 

[Riffy]

Well... according to me evic it changes all the time to 1ohms from anything...

 

[Riffy]

I own 2 of them btw too.. they both do it. Drives me crazy! Screw it off and back on and it reads it again but since I use watts... totally annoying!