Author Topic: Würth mini multimeter  (Read 17138 times)

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Offline hamdi.tn

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Re: Würth mini multimeter
« Reply #25 on: March 27, 2015, 08:52:02 pm »
am shocked ... didn't expect company like wurth to give such low price multimeter to their engineer.   :--
 

Offline meeder

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Re: Würth mini multimeter
« Reply #26 on: March 29, 2015, 09:57:02 pm »
am shocked ... didn't expect company like wurth to give such low price multimeter to their engineer.   :--
no, Würth isn't doing it.
 

Offline max666

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Re: Würth mini multimeter
« Reply #27 on: March 29, 2015, 10:34:49 pm »
I don't mind some Würth rebadging
 

Online blueskull

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Re: Würth mini multimeter
« Reply #28 on: March 30, 2015, 02:11:36 pm »
The meter this guy used is a 87, he is measuring using ACV, that means NO HRC FUSE, and that is what happened.

AFAICS a HRC fuse is not what's needed to make a meter safe for this kind of voltage on ACV/DCV. With 10 MOhm input resistance 2.3 kV puts a measly half Watt into the meter ... hardly worth sacrificing a fuse for.

The problem is a voltage spike broke down the 10M input divider, and without any further protection, it arced over.
 

Offline fubar.gr

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Re: Würth mini multimeter
« Reply #29 on: March 30, 2015, 06:07:44 pm »
I have a similar Wurth meter. It is almost identical to that, but has no current measurement capability, only voltage.

I'll post some teardown photos tomorrow

Well I managed to get my hands on one and I found a way to take it apart in a non-destructive way. There was single hidden screw which held everything together.

Where's that screw?
« Last Edit: March 30, 2015, 06:21:47 pm by fubar.gr »
 

Offline meeder

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Re: Würth mini multimeter
« Reply #30 on: April 01, 2015, 09:04:07 am »
I have a similar Wurth meter. It is almost identical to that, but has no current measurement capability, only voltage.

I'll post some teardown photos tomorrow

Well I managed to get my hands on one and I found a way to take it apart in a non-destructive way. There was single hidden screw which held everything together.

Where's that screw?

On the backside there is the black plastic insert where you can store the probes. If you get that piece out (at first I though it was glued but it wasn't) you get to the screw.
You have to remove the sticker on the front because it keeps the two halves together (I lifted it up to just below the seam and I could stick it back without damage).
 

Offline fubar.gr

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Re: Würth mini multimeter
« Reply #31 on: April 01, 2015, 09:17:40 am »
Thanks!

BTW, since it is rated as CATIII 1000V, why does it say 600V max on its side?

Offline meeder

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Re: Würth mini multimeter
« Reply #32 on: April 01, 2015, 10:43:24 am »
Thanks!

BTW, since it is rated as CATIII 1000V, why does it say 600V max on its side?

Because the "fuse" is rated 600V. The same as the UNI-T's which only have 250V fuses (ceramic if you are lucky, glass if not).
I wouldn't go near mains voltages with both though ;)
 


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