Dedicated Ohm reader vs APV for measuring ohms?

[djironic]

I am currently in possession of two vv v3s and a sigelei 20w, all of which have a built in Ohms reader.

Is it really necessary to buy the little black plastic Ohm reader box for checking builds to be used on my new mech, or can I use one/all of the APVs to confirm the resistance before throwing it on my mech?

It seems to me that the chip in the sigelei 20w has to be at least as accurate as a $10-15 little box.

I also have two POS little DMMs from Harbor Freight, but reading Ohms with those is a huge PITA (it's hard enough just to get the leads to short, let alone check resistance!). They *are* pretty good at checking battery voltage, though, which is a relief, lol…didn't want to have to buy something else just to check my batteries! I'm already going broke with this as it is…

 

[jpcwon]

I am currently in possession of two vv v3s and a Sigelei 20w, all of which have a built in Ohms reader.

Is it really necessary to buy the little black plastic Ohm reader box for checking builds to be used on my new mech, or can I use one/all of the APVs to confirm the resistance before throwing it on my mech?

It seems to me that the chip in the Sigelei 20w has to be at least as accurate as a $10-15 little box.

I also have two POS little DMMs from Harbor Freight, but reading Ohms with those is a huge PITA (it's hard enough just to get the leads to short, let alone check resistance!). They *are* pretty good at checking battery voltage, though, which is a relief, lol…didn't want to have to buy something else just to check my batteries! I'm already going broke with this as it is…

I think you'll be OK with your existing devices....My experience has been that those little black boxes aren't always accurate themselves. I went through 2 of them before I found a 3rd that I could trust....The first one drifted like crazy, and the second ALWAYS read .6-.7 Ohms Low....the third is rock solid though....I compared all 3 to a Fluke DMM I use for work....

Do all 3 of your devices read the same just out of curiosity?

 

[djironic]

Well, haven't had a chance to try the Sigelei out yet, but the two vv v3s both show the same resistance readings consistently...

 

[lopenator]

I use my Vamo to read it. I find it more accurate than the volt meter I sometimes use. I guess because the volt meter has in internal resistance too.

 

[Ripshod]

Just occured to me, I'll post here because I think it's relevant.
Does anyone make a resistance box for checking the accuracy on these meters? To have a calibrated box as a reference to check accuracy would be a massive benefit, for vape shops especially. Maybe a project for me later on when I have the time.

Personally I use my AVO, which itself is calibrated yearly for my work, and reads down to 0.001 ohms. After all, safety comes first!!

 

[Xaviour]

Just occured to me, I'll post here because I think it's relevant.
Does anyone make a resistance box for checking the accuracy on these meters? To have a calibrated box as a reference to check accuracy would be a massive benefit, for vape shops especially. Maybe a project for me later on when I have the time.

Personally I use my AVO, which itself is calibrated yearly for my work, and reads down to 0.001 ohms. After all, safety comes first!!

That could be a cool project. Board and resistors at radio shack.

Sent from my slow sprint phone...

 

[DetraMental]

I basically use the black box as a work platform for my RBA's and then I'll check the ohms on it. I always double check the ohms on another device just to see though.

 

[boomhower1820]

I mainly use my MVP 2 as it's what I use as a platform for assembling. Also used my VV 3 to double check. Recently bought a volt meter for my batteries and will be using it as well.

 

[anumber1]

My little FT black box is pretty accurate at -.01 ohms off compared to my Fluke.

I was surprised! Since my little black box sample rate is exactly one, I cannot speak for the overall consistency of those cheap black box ohm readers.

Sent from my XT907 using Tapatalk

 

[suspectK]

^what fluke do you have that reads in miliohms? I know they exist, but not a typical meter for most people to have/spend $500+on.

I don't recommend tightening contacts tight on atomizers while they're on those cheap black boxes. I would also recommend having a multimeter to double check.. especially after having the cheap box meter for a while.

 

[anumber1]

^what fluke do you have that reads in miliohms? I know they exist, but not a typical meter for most people to have/spend $500+on.

I don't recommend tightening contacts tight on atomizers while they're on those cheap black boxes. I would also recommend having a multimeter to double check.. especially after having the cheap box meter for a while.

Well, I am something of an electronics geek with HiFi and R/C hobbies as well as a former industrial logic tech.

So I have a Fluke 289, (Fluke 289 True-rms Industrial Logging Multimeter with TrendCapture) a higher end Avo, plus a bevy of lesser Velleman and cheaper Chinese meters around.

One of the best cheap meters to be had is the Uni-T, ut33c. It is a really good meter for less than $100. Seriously good specs for crappy, junk meter price.
(Uni-Trend Group Limited)

 

[Ed_C]

I just ordered a UT33A. I was thinking it was better, because it has a 4000 count and auto-ranging which the C doesn't have, but now that I look, the C has bit better accuracy. Do you think the C is better? It was cheap, like $17 shipped. I've also read good things about the UT61E for about $50.

 

[anumber1]

I just ordered a UT33A. I was thinking it was better, because it has a 4000 count and auto-ranging which the C doesn't have, but now that I look, the C has bit better accuracy. Do you think the C is better? It was cheap, like $17 shipped. I've also read good things about the UT61E for about $50.

The Uni-t ut33a is a good meter. It will work for you just fine and is so much better than anything harbor freight or rat shack has to offer for the price.

Good Choice.

 

[suspectK]

Well, I am something of an electronics geek with HiFi and R/C hobbies as well as a former industrial logic tech.

So I have a Fluke 289, (Fluke 289 True-rms Industrial Logging Multimeter with TrendCapture) a higher end Avo, plus a bevy of lesser Velleman and cheaper Chinese meters around.

Oooo..nice..I think that I may be able to find a reason to have the company get one of those.

Sending a pm to not derail this thread completely.

 

[havok333]

I like to first check resistance on a small black box just to make sure there's no shaft that I missed, and to get an idea of resistance before I put it on top of any device. I figure better safe than sorry.

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