Products > Test Equipment

A look at the Uni-T UT210E

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RoGeorge:
Mine was almost never used, the switch is still OK, but the clamp doesn't measure any more.  :-//

I suspect I might have damaged the Hall sensor or its input stage because of a too bigger field during de-magnetizing the UT210E.  Didn't attempt to repair it yet, so I don't know for sure what happened.

Neutrion:
I would check the flex cables first.

I cleaned the grease properly with isopropyl alcohol. Not sure it was a grease meant to be
on the contact surfaces or whether it migrated down from the plastic mechanism.
But it seems that I solved the problem, now I can push the switch around in all the different modes
without causing contact problems. Hopefully it stays so.
Would be nice to know whether  new meters come with or without grease.

And by the way the main chip on this 2013 modell is marked both with the Hycon sign and the letters j200 and the Dreamtech logo and dtm0660l. This is the VC330 Version from Voltcraft.

Also would be nice to know if the new ones got fast protection diodes, becose these old ones don't seem to have it, so it might wouldnt survive the grillstarter. Not sure about the other generators though.


BillyO:
I've had no trouble with mine.  I only use it for non-contact current measurement and voltage detection.  Nothing else, but it has been exemplary at doing that (so far).  The sad thing is, you won't get any support from UNI-T.  You can certainly try asking them, but I don't personally know anyone that has gotten a response from them.  My policy with UNI-T, after buying a scope that had minor issues but no updates or fixes or support response, is don't buy anything over $50 from them.  This unit falls into that category.  It's too bad you got little use out of it.

Open it up to see if it's anything obvious.  Perhaps a wire or other component was badly soldered.  :-//

apelly:

--- Quote from: Neutrion on January 05, 2023, 06:48:45 pm ---Would be nice to know whether  new meters come with or without grease.

--- End quote ---
Just got one. I see some sort of grease. See pic.


--- Quote from: Neutrion on January 05, 2023, 06:48:45 pm ---Also would be nice to know if the new ones got fast protection diodes, becose these old ones don't seem to have it, so it might wouldnt survive the grillstarter. Not sure about the other generators though.

--- End quote ---
Ha! Hadn't read this far when I had mine open. Can't be arsed opening it again, sorry.

Neutrion:
Thanks for checking it! It seems to be deliberately greased, just like mine. My idea is,
that this grease looses some of its properties on the longer term and that is what causing the problems.
Because there is really hardly any wearmark visible on the traces if anything at all.
With mine it was like it started to drift around both in ac and dc amps mode, sometimes it was resetting
itself when pusing some buttons or turning the wheel, or not measuring anything at all.Luckily it's all gone now.

Other interesting note: In mine, the iron clamp core doesn't seems to be made of trafo plates. Is it the same with the new ones? Could that be the reason, why Joe was not able to get it to an even higher frequency? How is that made with higher bandwith current scope probes?

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