4-Wire Milliohm-meter. Something that was missing from my tool collection!

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4-Wire Milliohm-meter. Something that was missing from my tool collection!

Рет қаралды 2,172

Roland W

Күн бұрын

Пікірлер: 24

@frankdearr2772 Ай бұрын

Great topic, thanks 👍

@Matthew_Australia 6 ай бұрын

Interesting. Thanks for sharing Roland.

@ivolol 6 ай бұрын

TBF a meter with REL might be nice for such measurements. Zoyi also make a ZT303 which as 20,000 counts and REL. There are many projects on youtube that make a current source. If you supply 10mA or 100mA with leads, you can use any multimeter in millivolts mode to also read the resistance value, by ohm's law. If you want to do things very cheap. But a self contained unit such that you demonstrate is nice to have.

@guateque1718 6 ай бұрын

Zt303 is very good for diy milliohm tests.

@Steveuploads 6 ай бұрын

Something ‘ that ‘ was missing from my ‘tool’ collection’ to be correct.

@technomad900 2 ай бұрын

Have you tried making finer tip probes .. The probe clips are too thick for smd

@RolandW_DIYEnergyandMore 2 ай бұрын

well, I didn't change anything as those clips worked for me. I don't clip onto the components, just touch them with the edge of the clip. But I think it would be possible to even maybe solder a very short tip between the 2 fingers. Just keep the injector side and probe side near to the point of measurement.

@technomad900 2 ай бұрын

@@RolandW_DIYEnergyandMore I found some 'four-wire' probes typically sold for the YR1035 (aliexpress part 1005007203133289). They have dual tips that are 1mm apart .. I will buy these and terminate to a green block

@RolandW_DIYEnergyandMore 2 ай бұрын

@@technomad900 yes, for the YR1035 there are the normal probes wich are used for battery terminals and also component probes. I have the meter but only the normal probes which are not suitable to work on a PCB.

@technomad900 Ай бұрын

@@RolandW_DIYEnergyandMore good idea .. I will try this

@thomass7877 6 ай бұрын

Is it possible to zero the instrument? thx...

@guateque1718 6 ай бұрын

I want to know too.

@RolandW_DIYEnergyandMore 6 ай бұрын

not that I know...

@thomass7877 6 ай бұрын

thank you.... @@RolandW_DIYEnergyandMore

@topeye4202 6 ай бұрын

I have the YR1030+ to measure internal resistance of batteries and other low resistances (cost me 550Baht) I thought you have it too? Is there any difference?

@RolandW_DIYEnergyandMore 6 ай бұрын

Sorry. I have just tried out the battery meter and it works as well. I have failed to do it before, as it is very tricky with those spring loaded probes to work on components or PCB pins as the tips are to far apart. I just saw that there are offers with other probes included as well which I don't have. So yeah, you are correct :)

@ivolol 6 ай бұрын

That device is using AC signal to measure devices I suspect, whereas this one uses DC current. Both methods can work for single resistors

@manuelmozzali-ie2xe 6 ай бұрын

My 9.99 euro multimeter has capability to measure max 2ohms in 1milkiohms resolution... Is it bad? It can change resolution to 100 milliohms and then the max is also 20 ohms I always have a feeling my cheap multimeter lies and is not precise, too many function for such low price, this new way with 4 wires is cool cause it removes the probe noise\error

@RolandW_DIYEnergyandMore 6 ай бұрын

measuring values well below 1 ohm with 2 wire methode will return inevitable faulse measurements. For the 10 euros you have most certainly got the "all in one - wonder" Meter. Nothing wrong with a cheap meters, its just some features might be just out of the marketing booklet only so you should always double check. find a low value shunt resistor on a board, read the value which is written on it and make a measurement. Then just see what the meter claims ;)

@manuelmozzali-ie2xe 6 ай бұрын

@@RolandW_DIYEnergyandMore the manual it came with is telling about +\- 1% but I always disliked the probes margin of error, your ohm meter looks way better xD I'll see if I can get one cause I often have to mess with r005 resistors

@RolandW_DIYEnergyandMore 6 ай бұрын

@@manuelmozzali-ie2xe yes. If you need to measure such components, then you should definitely get a specialized 4 wire meter

@deang5622 6 ай бұрын

You used the word precise saying it is not precise. Don't confuse precision with accuracy. Your meter may have precision but not be accurate. And I would suggest this is the case. What use is a meter that has high precision but have low accuracy?

@manuelmozzali-ie2xe 6 ай бұрын

@@deang5622 that's what I meant yes, accurate xD my bad I'm italian