ipv help?

[zacclague95]

Built a 24g 5 wrap of kanthal on my xv3 on my ohm meter the coils reads .07 solid. No jumping around but when I put my Atty on my ipv it reads .23? I got the update today also to 165watts. I heard that you can make lower builds with it but I was curious what the cap was why it won't read at .07 on my box.

[Michael]

I don't know for sure about that particular  mod  since I  don't have one, but  I  know that my box mods don't always read the atties correctly all the time. My Sigelei currently has a .16 ohm build on it but it reads as .2 ohms. The same build reads as .19 on my God Mod. I think there's just a bit of margin for error on the built-in ohm readers. 

[zacclague95]

(30-03-2015 06:13 AM)Michael Wrote:  I don't know for sure about that particular  mod  since I  don't have one, but  I  know that my box mods don't always read the atties correctly all the time. My Sigelei currently has a .16 ohm build on it but it reads as .2 ohms. The same build reads as .19 on my God Mod. I think there's just a bit of margin for error on the built-in ohm readers. 

That's what I was kinda leaning towards if they weren't totally accurate. Ipv's gotta be way off than lol. Appreciate the feedback!

[Michael]

I wouldn't say that means the ipv is way off. The readers get less accurate the lower it goes,so most readers are going to be wrong at that low of a resistance. More than likely the ipv is reasonably accurate  at higher resistance, but being that low would make the difference more noticeable.

[Don]

It costs a lot to measure small resistances with any accuracy. Below about 0.3 ohms most devices are essentially guessing.

[Nihilum]

The IPV 3 can fire down to .08 ohms if you have the 165 watt upgrade.  If you are .01 below that...it will not read it.  It's not that it's not accurate enough...it's a fail safe to keep you from venting your batteries or frying your board.

[Michael]

(01-04-2015 02:05 AM)Nihilum Wrote:  The IPV 3 can fire down to .08 ohms if you have the 165 watt upgrade.  If you are .01 below that...it will not read it.  It's not that it's not accurate enough...it's a fail safe to keep you from venting your batteries or frying your board.

If I understood the OP correctly, the mod will still fire, it's just reading it at a higher resistance than the ohm reader. So the coil can't really be .07, because if it was then the mod wouldn't fire at all. Maybe I'm way off though. 

[Nihilum]

Is the mod firing?  If yes, then I'd do another build on another RDA at .25 or higher just to see if it's off.  If it's not firing, it's because it's not reading the resistance, since it's below .08.

If you are using an ohm meter that an RDA screws into, they are not very reliable and are often way off.  Personally I use a multimeter that's accurate down to the ten-thousandth. (.0001).