Author Topic: Looking for a multimeter with these functions  (Read 2911 times)

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Offline tonycstechTopic starter

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Looking for a multimeter with these functions
« on: September 28, 2024, 04:33:16 am »
Hi gang, does anybody have come across a mutimeter for electronics thats not industrial like Fluke etc but something like chinese clones but not a complete trash that has the following functionality.
live(or slightly delayed) data graph for voltage and resistances
Uses 3v to measure diode
uses 2v to measure resistance
can read as low as 0.01 ohm
and is decent overall ?

I work on laptops and computer graphics cards. my cheap chinese multimeter works great but it cannot measure low resistances and it does not have any graph data at all.

Any recommendations ?

I currently own fluke 289 and i dont like it. it gives me strange resistances in specific areas and it does not have live graph, only recording and playback.

Thanks
 

Online tautech

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Re: Looking for a multimeter with these functions
« Reply #1 on: September 28, 2024, 07:55:43 am »
Bench meter or HH DMM ?
Budget ?
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Offline Paul T

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Re: Looking for a multimeter with these functions
« Reply #2 on: September 29, 2024, 10:06:39 pm »
ANENG AN870, AN8009 and Zoyi ZT-Y go down to 0.01 ohms very accurately, and use 3.2V for the voltage output.  All of these are around $20-$30 at AE.

The ZT-5566 is a slightly better ZT-Y.  It's a benchtop with bluetooth speaker, so you'll pay a few times more than the others.

Not sure why you need to consider the resistance voltage?  The meters I mentioned are roughly 0.4 mA output current (when tested using another multimeter in its mA current range).  If this is something you really need to know, say something and I will test them using your sample resistor size.

What are you expecting for graphing exactly?  An oscilloscope?  Historical Tracking?  Just a bar graph on the display?

BTW do you need a thermal camera for your troubleshooting?  The Tooltop ET13s IR+DMM does voltage graphing historically on screen in the multimeter mode. However this meter has poor low resistance performance.  Not to be trusted under 10 ohms (that bad).  On the good side, the diode output voltage is nearly 4V.
« Last Edit: September 29, 2024, 11:03:10 pm by Paul T »
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Offline 2N3055

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Re: Looking for a multimeter with these functions
« Reply #3 on: September 29, 2024, 10:38:13 pm »
MTX3293B

You won't like the price.
"Just hard work is not enough - it must be applied sensibly."
Dr. Richard W. Hamming
 

Offline coromonadalix

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Re: Looking for a multimeter with these functions
« Reply #4 on: September 29, 2024, 11:05:59 pm »
mmm   the EEVblog meters ??  121gw  or the 786 ?? no ?
 

Offline BILLPOD

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Re: Looking for a multimeter with these functions
« Reply #5 on: September 30, 2024, 01:39:15 pm »
Good Morning Tonycstech,   My vote is for the EEVBLOG 121GW.   It can meet your requirements and has features you won't find in most DMMs.   Some claim the readings are slow, but it's an easy work around.   My favorite feature is the 'reverse continuity' mode,
which is great for finding intermittent breaks in continuity, as it beeps on break.   You will never regret having this DMM in your arsenal. :-DMM
 
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Offline 2N3055

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Re: Looking for a multimeter with these functions
« Reply #6 on: September 30, 2024, 02:14:26 pm »
He wants graphical multimeter..
"Just hard work is not enough - it must be applied sensibly."
Dr. Richard W. Hamming
 
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Offline nctnico

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Re: Looking for a multimeter with these functions
« Reply #7 on: September 30, 2024, 03:06:03 pm »
Measuring low resistances like 0.01 Ohm is difficult for most multimeters (even with a 4-wire connection). A specialised resistance meter is a more suitable instrument.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 
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Offline Paul T

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Re: Looking for a multimeter with these functions
« Reply #8 on: September 30, 2024, 03:22:08 pm »
 If I was looking for accurate values below 10 ohms, I would go with a milliohmmeter as well. However, of you are looking for a multimeter which has a resolution to 0.01 for identification purposes only, the ones I suggested are fine. However you may need to activate the REL feature to remove the test lead resistance. The ZT-Y has a REL that covers most of the features the multimeter does.
Electronics always a core hobby. Sometimes I blog at KeepOnTesting.
 

Offline nctnico

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Re: Looking for a multimeter with these functions
« Reply #9 on: September 30, 2024, 03:32:01 pm »
If I was looking for accurate values below 10 ohms, I would go with a milliohmmeter as well. However, of you are looking for a multimeter which has a resolution to 0.01 for identification purposes only, the ones I suggested are fine. However you may need to activate the REL feature to remove the test lead resistance. The ZT-Y has a REL that covers most of the features the multimeter does.
I don't think that is good enough as the probe tips also have a contact resistance which can vary wildly depending on how you hold them and the amount of pressure applied.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline The Soulman

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Re: Looking for a multimeter with these functions
« Reply #10 on: September 30, 2024, 03:42:17 pm »
In case anyone missed these threads also by the same op:

https://www.eevblog.com/forum/testgear/lower-voltage-for-resistance-measurement-for-fluke-289/
https://www.eevblog.com/forum/testgear/fluke-289-no-live-trend/msg5657541/#msg5657541

Quote
Uses 3v to measure diode
uses 2v to measure resistance

Would be maximum open circuit voltage, he wants to measure in circuit.  :-X

Good luck.
 

Offline KungFuJosh

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Re: Looking for a multimeter with these functions
« Reply #11 on: September 30, 2024, 03:48:26 pm »
Sounds like OP needs a good Bench DMM, and to be sure he knows how to use it.
"Right now I’m having amnesia and déjà vu at the same time. I think I’ve forgotten this before." - Steven Wright
 

Offline Paul T

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Re: Looking for a multimeter with these functions
« Reply #12 on: September 30, 2024, 04:05:15 pm »
And a good set of test leads with sharp gold plated tips for consistent probing.

@OP: Budget?
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Offline KungFuJosh

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Re: Looking for a multimeter with these functions
« Reply #13 on: September 30, 2024, 04:16:45 pm »
Sounds like ProbeMaster probes to me. 😉
"Right now I’m having amnesia and déjà vu at the same time. I think I’ve forgotten this before." - Steven Wright
 

Offline Fungus

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« Last Edit: September 30, 2024, 04:23:22 pm by Fungus »
 
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Offline tonycstechTopic starter

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Re: Looking for a multimeter with these functions
« Reply #15 on: September 30, 2024, 04:42:40 pm »
Sounds like OP needs a good Bench DMM, and to be sure he knows how to use it.
i already had siglent and some chinese brand bench meter. Same problem
Returned both.
 

Offline TimFox

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Re: Looking for a multimeter with these functions
« Reply #16 on: September 30, 2024, 05:13:32 pm »
I am reminded of a past tragedy involving the cult "Heaven's Gate", who were waiting for an alien spacecraft following comet Hale-Bopp in 1997.
In one account I read then, members of the cult had gone to a high-end astronomical store in the Bay Area to buy a good telescope to see the spacecraft.
They returned it as useless, because the craft they could see clearly in their binoculars was not visible in the expensive telescope.
 

Online Zoli

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Re: Looking for a multimeter with these functions
« Reply #17 on: September 30, 2024, 05:44:39 pm »
Tektronix DMM870 - ~3.2V diodes, ~1V standard Ω, ~.4V LV Ω, bargraph update 20Hz. Good luck finding one.
 

Offline nctnico

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Re: Looking for a multimeter with these functions
« Reply #18 on: September 30, 2024, 05:45:04 pm »
Sounds like OP needs a good Bench DMM, and to be sure he knows how to use it.
i already had siglent and some chinese brand bench meter. Same problem
Which problem exactly?
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 
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Offline tooki

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Re: Looking for a multimeter with these functions
« Reply #19 on: September 30, 2024, 05:47:21 pm »
Sounds like OP needs a good Bench DMM, and to be sure he knows how to use it.
i already had siglent and some chinese brand bench meter. Same problem
Returned both.
This isn’t a flaw in the test equipment, it’s an issue of incorrect expectations. You’re trying to use the tool for something it’s not meant for. Or rather, the measurement you want is nonsensical.
 
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Offline KungFuJosh

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Re: Looking for a multimeter with these functions
« Reply #20 on: September 30, 2024, 06:02:12 pm »
Sounds like OP needs a good Bench DMM, and to be sure he knows how to use it.
i already had siglent and some chinese brand bench meter. Same problem
Returned both.
This isn’t a flaw in the test equipment, it’s an issue of incorrect expectations. You’re trying to use the tool for something it’s not meant for. Or rather, the measurement you want is nonsensical.

Or at least outside the specs of a bench DMM under $1000. What he wants sounds more like the combination of a $2000 DMM and a separate $5k to $11k LCR, and not testing in circuit.
"Right now I’m having amnesia and déjà vu at the same time. I think I’ve forgotten this before." - Steven Wright
 
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Offline tonycstechTopic starter

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Re: Looking for a multimeter with these functions
« Reply #21 on: September 30, 2024, 07:18:24 pm »
The issues is all the same across premium or bench top meters.
Too much current/voltage measuring resistance.
Need less. Need to be able to adjust that with the firmware.
That will fix the "none existent" problem.

While many of you engineers can argue about my lack of knowledge how electronics work (which i will not deny i have no clue how they work) it all comes down to one problem which is:
99.9% of all meters on this planet will measure 1.2K while 0.1% will measure 300ohms or if leads are reversed, 2.5k but no where near 1.2k.

With that said, it is absolutely pointless to argue with 0.1% of earths population who are engineers because they are simply too smart to understand stupid problems that idiots like me bring up from time to time.
Case closed.
Solution: None
Conclusion: Junk equipment is much more reliable when it comes to fixing high end electronics than high tech/high price equipment cant. I have nearly 100% success rate behind this statement.
 

Online J-R

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Re: Looking for a multimeter with these functions
« Reply #22 on: September 30, 2024, 07:24:04 pm »
As I mentioned in the other thread, you can just use a bench power supply and set the voltage and current limits to whatever you want.  No need to hunt excessively for a special DMM.

I've also proven previously that even the cheapest power supply and DMM can very precisely measure low resistances using the Kelvin sensing method.

Test Controller can perform math functions on multiple inputs, so you could have an Ohms display based on V/I: https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/
 

Online tautech

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Re: Looking for a multimeter with these functions
« Reply #23 on: September 30, 2024, 07:24:32 pm »
The issues is all the same across premium or bench top meters.
Too much current/voltage measuring resistance.
Need less. Need to be able to adjust that with the firmware.
That will fix the "none existent" problem.

While many of you engineers can argue about my lack of knowledge how electronics work (which i will not deny i have no clue how they work) it all comes down to one problem which is:
99.9% of all meters on this planet will measure 1.2K while 0.1% will measure 300ohms or if leads are reversed, 2.5k but no where near 1.2k.
Please explain.
What are you trying to measure and in what modes ?
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Offline BeBuLamar

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Re: Looking for a multimeter with these functions
« Reply #24 on: September 30, 2024, 07:25:09 pm »
How about a Uni-T 181?
 


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