Multimeter Question

[guitargodd6]

When I get the resistance that's in my multimeter for the coils, does getting the multimeters resistance only apply with checking the coils Ohms or does it also apply when measuring Voltage of battery?

 

[bacc.vap]

You only need to subtract the meter's resistance when measuring ohms.

 

[guitargodd6]

Alright thank you very much! And with dual coils I can just measure the positive and negative and subtract half of that?

 

[bacc.vap]

If you measure the ohms of a dual coil setup the two individual coils will each be twice the measurement.

Example: A dual coil setup measured at 2 ohms has two 4 ohm coils in it.

 

[guitargodd6]

So if the resistance of my multimeter is 1.2 and the Ohms of my coil is 1.6 and I subtract those two and get 0.4 ohms does that mean my total ohms is 0.8?

 

[eyerhere]

no that means with 2 coils at .4 you will be vapeing at .2 ohms

 

[bacc.vap]

So if the resistance of my multimeter is 1.2 and the Ohms of my coil is 1.6 and I subtract those two and get 0.4 ohms does that mean my total ohms is 0.8?

If you're measuring a dual coil setup and get 1.6 ohms then subtract the 1.2 ohms of meter resistance, the final resistance of your setup is 0.4 ohms, end of story. If you want to know what both of the coils resistance are then double the 0.4 ohms for each coil. You would have two coils, each being 0.8 ohms.

I've never had a meter with an internal resistance higher than 0.3 ohms, yours seems to be a bit high in my experience.

 

[guitargodd6]

Yea it was the only multimeter I had around and it has a broken lead lol Idk if that affects it or not

 

[edyle]

Alright thank you very much! And with dual coils I can just measure the positive and negative and subtract half of that?

No.

You just measure it.

 

[edyle]

So if the resistance of my multimeter is 1.2 and the Ohms of my coil is 1.6 and I subtract those two and get 0.4 ohms does that mean my total ohms is 0.8?

No.

It means your coil is 0.4 ohms.

(it consists of two 0.8 ohms coils, but do you really want to know that?)

 

[twgbonehead]

Alright thank you very much! And with dual coils I can just measure the positive and negative and subtract half of that?

Guitargod,

You need to phrase your questions more clearly.

If you are measuring the resistance of a head with 2 coils installed, then what you measure is what the head resistance is.
If you are measuring individual coils (before mounting them in the head) and you have 2 identical coils, the final resistance will be one-half of the resistance of a single coil.
Once you have 2 coils mounted on the head, you cannot measure the resistance of a single coil, they are already connected in parallel.

And there's no way you can get an accurate 0.2 ohm reading from a meter with a baseline resistance of 1.2 ohms. In truth you have no idea what your coil resistance is.