Testing Ohms and very high reading..

[Ictinike]

Hey there..

Have a AltSmoke LR atty and been working like a champ after 6 weeks but the other day it was giving weak vapor and squealing a bit so figured she was gone. Decided to check it tonight with a voltmeter and after checking my Vivi Nova's @ 2.4 ohms (both read 3.0 so a bit of buildup) I decided to read this blow atty.

First, it still has continuity which I found odd since I was using it the other night and hitting it like a champ for 10-20 mins and then it all a sudden went to nothing; not a gradual loss. Noticing this I felt it more than likely popped completely so I was shocked it had continuity but it's reading 51 ohms. Yeah, what I thought.

Is this typical of an atomizer? I had done a reading some time ago and it was I think 1.(something) very early on but to gain enough crude to go to 51 ohms? I'm sure it's not that and just wanted to find out what the consensus was? It's still fires but of course not really anything at all.

It's bridged and I'm trying to find out a diagram of how they are built but thought someone here would know and be able to inform me.

Thanks!

 

[Kemosabe]

perhaps the volt meter / multimeter is inaccurate. i know that happens with mine sometimes. i bought the cheapie harbor freight one for $5. sometimes its readings will be incorrect. for example, a charged 14500 battery was coming in at 20+ volts one day LOL. if your meter is like mine, it will benefit from a "round robin" of the dial. spin your dial completely around at least 1 full revoultion. this might "reset" it and begin giving accurate readings. or perhaps its the atomizer. maybe the thing is just fried.

 

[Ictinike]

Could be but I tend to trust my Fluke meter and it's if it is it's not worth the cost

I'm sure it's gone but just wondering why it turned so stark.. Oh well thought I would ask..

 

[Zaratoughda]

Uh, the crude that accumulates around the coil is NOT what makes the resistance go up.

What DOES make the resistance go up, is the coil starting to burn up. If you are getting 51 ohms, then part of the coil has burned but it has not burned enough to make it go open.

Yeah, this is what I tend to see. Once a coil starts going the resistance starts going up. I got some 1.8 ohm attys that have gone up over 3 ohms and, with that, they are as good as dead.

What tends to happen is the crud accumulates around the coil and then the heat from the coil cannot escape and things come to the point where the coil starts burning. When using low resistance atties people tend to say to 'keep them wet' and that is so the heat will dissipate better once the crud starts to accumulate.

Hope this helps.

Z

 

[Zaratoughda]

Oh... one thing about meters... there is some internal resistance that you need to suptract from your readings.

With my WalMart digitial multimeter, when on the ohms scale, there is .3 ohm resistance. So, if I read a atty at 2.7 ohms, I need to subtract that .3 to get the real reading, which in this case would be 2.4 ohms.

You can see the internal resistance simplay by crossing the leads and seeing how low it goes. That is the internal resistance that needs to be subtracted from any readings.

Yeah, on my WalMart multimeter I started getting some high readings and checked the internal resistance by crossing the leads and it was reading like .7 or something. What was happening was the switch connection was getting a bit worn and that was causing the difference. So now, whenever I used the multimeter, I always cross the leads and adjust the switch so I am getting that .3 ohms... and THEN I check whatever I am checking.

Z