Ohm Meter - Hundredth or Thousandth

[Kemosabe]

i currently have an ohm meter that goes to the tenth of an ohm (0.0). for example if my coil is 0.71 it will read 0.7.

im looking for one that will read the true 0.71. or better yet- a meter that will read the thousandth of an ohm (third digit after the decimal).

anyone know who sells one of those?
im currently using my DMM to get the most accuracy, but id like it in the ohmmeter format for ease of use.

 

[MorpheusPA]

Fluke makes tons of incredibly accurate ohm meters. There's plenty on Amazon, but check the product manual to make sure the accuracy is up to your specs.

Ohm ratings do change by temperature (and half a thousand other things), so 1/100th accuracy may not be necessary. Our atomizers also tend to rise in resistance over time by a bit.

 

[suspectK]

Extech 380580 Milliohm Meter - TestEquity

Milliohmmeter - TestEquity

Kinda overkill if you ask me. I only have one because it's part of what I do for a living.

 

[TheAmazingDave]

Can't go wrong with a Fluke. Might be hard to justify the price if you don't work with electrical too much.

 

[Kemosabe]

great points everyone. much appreciated.

i remember seeing a youtube video where the guy had his typical ohm box programmed to read only sub ohms. the three digits on the box were all after the decimal.

i have to agree though, this is indeed overkill.

ive decided to just search for an ohm box with the hundreth. thats all i need. those are pretty common, right?
anyone know where i can get one of those?

 

[MorpheusPA]

great points everyone. much appreciated.

i remember seeing a youtube video where the guy had his typical ohm box programmed to read only sub ohms. the three digits on the box were all after the decimal.

i have to agree though, this is indeed overkill.

ive decided to just search for an ohm box with the hundreth. thats all i need. those are pretty common, right?
anyone know where i can get one of those?

Unless you're seriously sub-ohming it, tenths are all you really require. In my case, targeting 1.9 or so, a tenth measurement is just fine. Almost every device will do that.

If you are sub-ohming, the map may change...under half an ohm or so.

 

[Kemosabe]

Unless you're seriously sub-ohming it, tenths are all you really require. In my case, targeting 1.9 or so, a tenth measurement is just fine. Almost every device will do that.

If you are sub-ohming, the map may change...under half an ohm or so.

most of my attys are sub ohm. ive got a few supra ohm, but even those max out at about 1.3Ω.
i dont prefer under half an ohm though. i havent been able to get good flavor that low so far.

but anyway, am i mistaken that most ohm meters go to the hundreth? or at least some?
i was surprised when my ohm meter only went to the tenth. its got the hundreth digit, but it always displays a 0. never any value in that place.

 

[muzichead]

i currently have an ohm meter that goes to the tenth of an ohm (0.0). for example if my coil is 0.71 it will read 0.7.

im looking for one that will read the true 0.71. or better yet- a meter that will read the thousandth of an ohm (third digit after the decimal).

anyone know who sells one of those?
im currently using my DMM to get the most accuracy, but id like it in the ohmmeter format for ease of use.

Kemo, I got mine from FatDaddy a while back. It reads out to the tenth. It also has a blue lcd as well...

 

[Kemosabe]

thanks muzic

 

[dripdaze]

A good meter that reads to tenths of an ohm is sufficient.

 

[Kemosabe]

A good meter that reads to tenths of an ohm is sufficient.

great avatar!

 

[montara]

Kemo, I got mine from FatDaddy a while back. It reads out to the tenth. It also has a blue lcd as well...

+1 on the FatDaddy, great price and service. This meter also makes a nice atty holder while makin' coils.

 

[Kemosabe]

this is the ohm meter i have. built in rechargeable battery. i would like to know if it rounds up, down, or neither. i guess i can do some tests comparing the meter readings to the DMM and to the provari's results.

 

[dripdaze]

+1 on the FatDaddy, great price and service. This meter also makes a nice atty holder while makin' coils.

Yes but you can't measure battery voltage or troubleshoot connection issues with it. I've thought about getting one anyway because as you say, it's a nice base to build on but I'm afraid I would never use it because of the hassle of moving the atty. back and forth between the mech and meter.

 

[montara]

Yes but you can't measure battery voltage or troubleshoot connection issues with it. I've thought about getting one anyway because as you say, it's a nice base to build on but I'm afraid I would never use it because of the hassle of moving the atty. back and forth between the mech and meter.

For me the XTAR VP1 charger provides battery SOC and as far as troubleshooting connections the Fluke or basic common sense finds any issues. This unit was $10 when I bought it... but for even for $16 I'd buy again (and score a few more batts at the same time too)

 

[muzichead]

Yes but you can't measure battery voltage or troubleshoot connection issues with it. I've thought about getting one anyway because as you say, it's a nice base to build on but I'm afraid I would never use it because of the hassle of moving the atty. back and forth between the mech and meter.

That's where this becomes a handy tool to have in your re-build kit... You can also figure out voltage drop pretty easy with both of them...

 

[dripdaze]

For me the XTAR VP1 charger provides battery SOC and as far as troubleshooting connections the Fluke or basic common sense finds any issues. This unit was $10 when I bought it... but for even for $16 I'd buy again (and score a few more batts at the same time too)

If you have a fluke as well, you have all of the bases covered. I was pointing out the problems with someone new to mechs and RBA/RDAs buying a simple resistor checker instead of a multimeter.

 

[dripdaze]

That's where this becomes a handy tool to have in your re-build kit... You can also figure out voltage drop pretty easy with both of them...

You can do the job with a voltage meter and a resistance meter as well but I find a multimeter useful in all sorts of ways and would prefer to buy one of them rather than multiple meters that have less functionality.

 

[twgbonehead]

Bears repeating:

1. The resistance you measure is the cold resistance. It changes as the coil heats up, so to really know the power you're vaping at you would need to measure the resistance at the same current you normally vape at (with e-liquid in there, too)
2. There are some meters that display hundredths, but I'd be very surprised if they were accurate down that far.
3. It would be nice to find a PV that measures the resistance while you're vaping. Thought I read about one not too long ago?
4. In order to be really accurate, an ohmmeter needs 4 contacts; 2 which carry the test current, and 2 separate ones that measure the resulting voltage.

 

[MorpheusPA]

2. There are some meters that display hundredths, but I'd be very surprised if they were accurate down that far.

This. My cheapest meter only goes to tenths, and is accurate to around 0.1-0.2 depending on the contact made (this is after taking out the sensor's internal resistance). For the most part, it's good enough for my purposes.