multimeter help

[wood]

k so i dont know if its just me using the meter wrong but almost every atty i have atm the ohms is not as advertised
ive been checking for a while now and its always way off
Buy Mastercraft Digital Multimeter in Canada - Yahoo! Canada Shopping heres my multimeter
can someone help me test my atties correctly i have 1.5s reading 2.0 i have other 1.5s reading 2.4 -2.8 and i tested before use

 

[Nodnerb]

If you have the meter set to 200 ohms, that's about all there is to it. The temperature in your house, moisture etc. will play a factor but not much. I'm not an experienced vaper by any means but I am an electonic technologist so the meter part I can help with, what to expect for tolerances in different attys, not so much. But that does seem waaaaaay off.

 

[wood]

i expect them to be off by a small amount but not that much

 

[wood]

i set to 200 stick the red in the center hole of the atty and the black on the thread

 

[chaseman]

Also, remember to have the red and black making contact BEFORE you push the button to turn the multimeter on.

 

[wood]

what u mean

 

[Sublym1]

He means that you should have the red and black leads connected to your multi-meter before turning it on.


Sent using Tapatalk Pro.

 

[Can_supplier]

There are many factors as to why your readings are off.

1st, all atomizers fall in a very small range. Resistance can be from 0 ohms to infinity. Atomizers fall in a very small range of 1 ohm difference. Its a bit like trying to measure a hair with a ruler, its hard to be accurate.

2nd not all atomizers are exactly the ohms, there is a degree of error. The material itself and the amount of material will change the ohms. If one wire is a few thousands of a inch longer than another one they will have different resistances.

3rd, use of the atomizer will change its electrical properties. When an old atomizer gets weak, that is because its resistance has increased. If you think of a string held over a flame, as the string burns it gets smaller and smaller. The smaller a string, or wire in this case, the greater the resistance.

Also your meter may not be that good. Take the two leads and hold them together. You should get a reading of 0 or 1, as there should be no resistance. You will see that isn't the case as your meter will bounce around slightly. That is error in your meter.

 

[Denich]

Try a different meter as well.

I had a clamp that was about 20% off when compared with two others. I do a lot of work with commercial HVAC equipment and 20% can turn into a huge headache.

 

[wood]

the meter is fine no jumping or anything its basically new , it measures volts perfectly they are probes no clamps
i realize error can be present but then y am i given options if your saying they cant be met if i order 1.5 i can see a .2 difference but for a 1.5 to be 2.6 is not really a small error , when im given options as acurate as 1.5 1.8 2.0
i even have an ikv thats stamped 1.5 on the side , 2.4 day i got it and thats a higher quality product
dont mean to complain but thats not right all my joyes are off too , same with my i06 ordered 1.5 it reads 2

 

[Denich]

not to be a brand ..... but its a sub-$50 Mastercraft.....

Go to your local home improvement store, they might have a quality multimeter that you can buy/test/return. Hell go to crappy tire and get another identical tester to see if they read the same.

 

[teabagger]

make sure your multimeter batteries are fresh...

 

[Can_supplier]

not to be a brand ..... but its a sub-$50 Mastercraft.....

Go to your local home improvement store, they might have a quality multimeter that you can buy/test/return. Hell go to crappy tire and get another identical tester to see if they read the same.

That's about it... It doesn't seem like much, but asking a multimeter to accurate read the difference between 1.5 and 2.5 is alot, and would be one of the reasons for the drastic price difference in meters that on the surface do the same functions.

How do those atomizers vape? There should be a really noticeable difference between the ones that are testing 1.5 and 2.5 if the readings are accurate.

 

[HzG8rGrl]

After you turn on the meter, touch the 2 probes together and hold for a couple seconds. If it reads .4 you subtract that from the actual reading you get when you check the atomizer. If it reads anything other than zero-you subtract that number from the reading of the atomizer.
Say the shipped atomizer is supposed to be 2.0 and when you meter it reads 2.4 then subtract the .4 and you have a 2.0 atomizer.

 

[BubbaNubba]

Here's a picture of how you measure the resistance of an atty.

Hope this helps

 

[wood]

ya i just wanted to make sure i had it set right , like to 200

 

[dieselguy]

I have a $300 BluePoint meter, and a $30 Mastercraft meter. The Bluepoint meter leads have .02 ohms resistance, and the mastercraft meter has .6 ohms resistance................I tested one of my attys with both meters, and exactly what HzG8rGr was saying the resistance difference was because of the leads........after taking the .6 ohms into consideration both came out with the same reading..........I don't know what the resistance is supposed to be, but mine came out at 1.8 ohms. When testing electronic components, Always have to take the leads into consideration.

 

[wood]

Thanks ill try

Sent from my Nexus S using Tapatalk

 

[Can_supplier]

The Bluepoint meter leads have .02 ohms resistance, and the mastercraft meter has .6 ohms resistance................

The problem with the cheap meters I had was repeatability. You would find the leads to have a resistance of .X ohms then when you try again and get .Y ohms.

Higher end meters should self zero as the bluepoint did.. Not sure if mastercraft do the same, but it doesn't seem to work well. In the old days with dial readouts there was always a rotary switch on them, higher end at least, so you could zero the resistance of the leads.

 

[teabagger]

I have a bach simpson ts-111, that is my bread winner for work... the old days are still here, in some fields, heck i have hundreds of relay's in service today, that date from the 40's to 60's.