Products > Test Equipment

New ESR meter - MESR-100 V2 by 'Jingyan'

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con-f-use:

--- Quote from: KARADENIZ on August 21, 2013, 03:36:48 pm ---I'm new here and I want to buy a ESR Meter but I won't pay for it >50$ because I will use it only one time to test the capacitors.
Has anyone tried these ESR Testers from china for ~25$  ?
I want to test capacitors from 4,7uF - 1000uF
http://goo.gl/KqXlSS

--- End quote ---

See the Threand on these ESR Testers. Bottom Line: They're a well proven design from a German micro controller board. Open source hardware and so some are manufactured in China. If you don't need much accuracy or fanciness they're worth their twenty odd bucks. But as always with Chinese sellers: Watch the build quality and apply common sense.

_ar_:
Hi, Just recently purchased one device, mine came with V2.3. There's one thing I'm interested in though. When I short the included clips and zero the device, if I move the clips around with the clips still shorted, the zero (-0.000) changes. Mostly to -0.013 or -0.026 (I move the clips towards the unit). Is this normal or I have a defective unit? It seems odd to me that basically bending the test wire (which I'm sure will do when trying to test caps in circuit) would change the zero this significantly.

Lanaki:
I have the same thing happen. When I zero the unit (v 2) sometimes it will zero sometimes not. Just depends where the clips on the leads are. After it has been on zero for a few seconds the reading will change (after button is pushed and if you do not separate leads right away). Does not seem to affect reading of caps however and I always use my own look up table to check the condition of the caps. My table lists voltages  and sizes not listed on the small list on the case such as for 50 volt caps etc. I do not believe there is a fault with the meter because it does not exactly zero. Or am I totally wrong? Aloha

Miti:

--- Quote from: _ar_ on June 05, 2018, 10:25:55 pm ---Hi, Just recently purchased one device, mine came with V2.3. There's one thing I'm interested in though. When I short the included clips and zero the device, if I move the clips around with the clips still shorted, the zero (-0.000) changes. Mostly to -0.013 or -0.026 (I move the clips towards the unit). Is this normal or I have a defective unit? It seems odd to me that basically bending the test wire (which I'm sure will do when trying to test caps in circuit) would change the zero this significantly.

--- End quote ---

What you see there, is a change in resistance of 13 - 26 mOhm between the two banana jacks, so basically in the clips somewhere. I have the meter, the clips are not the best, they are pretty loose so a variation of few tens of mOhms is normal when you wiggle/ move them.

Vicarious:
I'm  looking for test leads for the mesr-100 meter.
it seems that all my test leads have high resistance  so the meter is impossible to zero them.
any recommendations?

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