Products > Test Equipment

Multimeters with (Color) Graphic Display - Summary & Comparison

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joeqsmith:

--- Quote from: Markus2801A on April 20, 2019, 07:13:32 pm ---I sorry, but I don't understand why do "we" ant to destroy those devices with extrem torture testing, which will never occur in real life.
A technician, who spends so much money for a DMM like the Metrix MTX 329x-Series or other high end Meter like Fluke, Gossen etc. will take care of his equipment!

I indeed do understand, that good input protection and rigid construction, high quality Materials and electrical parts should be present in higher priced meters. But aren't some of these exaggerated stress tests a little bit absurd. Sorry if I say directly what im thinking, but I'am a very careful person as I know how long I have to work to be able to buy such a high priced meter!

--- End quote ---

I personally won't take offense to your question. 


--- Quote ---Also - as I am a teacher - I consider take them into school to show some basic measurements to my students (its because unfortunately you don't get state of the art equipment from school, what a pity!)
--- End quote ---

As someone teaching though, I would have expected you to do your homework first before attempting to teach us.  If you are curious about the IEC standards, I would start by doing a search on the 61010.   If you are curious about the little tests that I run, there is a FAQ and a few videos that go over it.    Anything I show is a far cry from what the IEC standards call for.   

Now if this particular Metrix meter would survive the basic tests I run, it's a pure guess on my part based on my experience running other meters.   I do offer all the data I have collected free of charge.  You can look through it and see that there is a trend for certain brands to be much more robust than others.  I would expect the highest cost meter to be one of the most robust. 

Markus2801A:

--- Quote from: joeqsmith on April 20, 2019, 07:46:53 pm ---I would expect the highest cost meter to be one of the most robust.

--- End quote ---

I totally agree with you ;-) As you pay more for the device it should be well designed and made!
Its very annoying if it isnt, since the "law" of economy says, you get what you pay for! But unfortunately in our money driven World to many players try to optimize their profits instead of their products.

2N3055:

--- Quote from: Markus2801A on April 21, 2019, 05:25:45 am ---
--- Quote from: joeqsmith on April 20, 2019, 07:46:53 pm ---I would expect the highest cost meter to be one of the most robust.

--- End quote ---

I totally agree with you ;-) As you pay more for the device it should be well designed and made!
Its very annoying if it isnt, since the "law" of economy says, you get what you pay for! But unfortunately in our money driven World to many players try to optimize their profits instead of their products.

--- End quote ---
Not necesarily. Long scale benchtop meter are not robust at all. They have other priorities. I believe same is here. MTX 3293 is for electronics, in the lab. It's robust enough for that.  Also, no, I don't hit it with a hammer or play football with it. So it will last.

Markus2801A:

--- Quote from: 2N3055 on April 21, 2019, 06:53:25 am ---Not necesarily. Long scale benchtop meter are not robust at all. They have other priorities. I believe same is here. MTX 3293 is for electronics, in the lab. It's robust enough for that.  Also, no, I don't hit it with a hammer or play football with it. So it will last.

--- End quote ---

Totally agree! :-) High End Benchtop cost multiple of even the highest priced Handheld available Because of their usage is in Lab so u have to be careful with them :-)

H, thinking of buying the C.E.M. DT-9987, because it seems to take some time until the new C.A. 5293-BT is released. What du you think? Or the Uni-T? or other, I dunno  |O

joeqsmith:

--- Quote from: 2N3055 on April 21, 2019, 06:53:25 am ---Not necesarily. Long scale benchtop meter are not robust at all. They have other priorities. I believe same is here. MTX 3293 is for electronics, in the lab. It's robust enough for that.  Also, no, I don't hit it with a hammer or play football with it. So it will last.

--- End quote ---

Handheld meters have a specific safety standard just for them.  I doubt you would find too many people (I won't use electricians) who would use a bench meter in a CAT III environment.   It is possible that the Metrix 3293 really isn't very robust and  designed for a nice clean indoor lab low voltage bench use.  Let's see how they market it.  The following quotes are from their user's manual and sales literature:

"IP67 protection against water projections and dust, ideal for outdoor conditions" 
If I look in the user's manual, it states:
"This instrument is been designed to be used as follows: -indoors"   
"IP67, according to NFEN60529"
Even at the company where the meter is designed, I guess they can't agree so we can't expect potential customers to have a clear understanding.
 
"The ASYC IV multimeters are ideal for many applications in industry, telecommunications and defense. Their multiple functions make them easy to use for electrical and electronics maintenance, as well as machine maintenance."

"Safety as per IEC 61010-1 1,000 V-CAT III /600 V CAT IV Safety as per IEC 61010-2-03"

"No time-wasting: the instrument operates while charging "
I wonder how they get that one through certification.

"Fuse 1,000V 11A >20kA 10x38mm"

"This instrument is designed in conformity with the EMC standards in force and its compatibility has been tested in accordance with the following standards: Emissions (cl. A) and Immunity NF EN61326-1"

I spent some time trying to find the certs for it.  No luck.  It could be like UNI-T.  Wait, I think UNI-T actually has some of their products certified. 

So far the closest handheld meter I have found to my HP34401A bench meter is the Gossen Ultra.  It has some problems but it's certainly robust electrically.   
It survived all the basic ESD and line voltage test and made it's way to 6KV 100us FWHH on the low voltage generator.   I stopped testing with the original generator at 12KV 50us FWHH.    It's rare I see meters do this well.  It's a shame that Gossen half ass'ed it with their added fluff and lack of adequate shielding.     

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