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UNI-T UT61E Multimeter teardown photos.

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Hydrawerk:
Is it normal that I get 312pF when nothing is connected?? I found these UT-61E at a school lab

Hydrawerk:
I got much better results on some old multimeters. UT70A from 2009, DT-890G from early 2000s and the M-3650D is more old, probably from mid 1990s.
(I do not know if this was discussed earlier in this thread...)

mariush:
The capacitance is a bit on the high side.

Mine shows 84 pF with the leads connected, about 58 pF without any leads.  The manual specifies 50pF as normal/acceptable, and that you should use the REL button to zero it out.

Still, i wouldn't worry very much about it, though i would test the capacitance function with several known capacitors.

RobertoLG:

--- Quote from: Hydrawerk on April 09, 2016, 12:29:15 am ---Is it normal that I get 312pF when nothing is connected?? I found these UT-61E at a school lab

--- End quote ---

just press the Rel mode

Hydrawerk:
Thank you for the advice. My thoughts on the meter:
The two buttons (blue and yellow) are confusing.
Why no LCD backlight? Strange on a 22000 counts DMM.
The autoranging is quite fast.
Beeper is fast.
I like the OFF position of the rotary switch. Now the DMM cannot turn on when carried in a backpack.
Well, i prefer Brymen (not owning one yet) but this UT61E is probably an OK multimeter for most needs, especially if you do not work with high energy circuits.

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